Phase shifter, phase shifting module, antenna feeder system, radio frequency system and communication equipment

Abstract

A phase shifter, a phase shifting module, an antenna feeder system, a radio frequency system and a communication device aim to solve the problem of large insertion loss, one end of a first phase shifting device of the phase shifter is connected with a first interface, and a first switching device is used for controlling on or off of a first branch; one end of the second phase shift device is connected with the first interface, the second switching device is connected with the other end of the second phase shift device and the second impedance matching device, and the second switching device is used for controlling on or off of the second branch; when the first branch is conducted, the first interface and the second interface transmit signals through the first phase shift device and the first switching device, and when the second branch is conducted, the first interface and the second interface transmit signals through the second phase shift device and the second switching device; the number of devices between the first interface and the second interface is small, and the insertion loss of the phase shifter is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and specifically to a phase shifter, a phase shift module, an antenna feed system, a radio frequency system, and communication equipment. Background Art

[0002] During the transmission of communication signals, a phase shifter is generally used to change the phase shift of the signal. The phase shifter includes a first interface, a second interface, a first phase shift branch, and a second phase shift branch. One end of the first phase shift branch is connected to the first interface via a first switch, and the other end of the first phase shift branch is connected to the second interface via a second switch. One end of the second phase shift branch is connected to the first interface via a third switch, and the other end of the second phase shift branch is connected to the second interface via a fourth switch. The first phase shift branch and the second phase shift branch have different phase shifts for the signal. Through the coordination between the switches, the first interface and the second interface are connected via the first phase shift branch or via the second phase shift branch, so that the signals at the first interface and the second interface have different phase shifts. However, the number of devices that the signal passes through from the first interface to the second interface in the phase shifter is large, resulting in large insertion loss. Summary of the Invention

[0003] Embodiments of the present application provide a phase shifter, a phase shift module, an antenna feed system, a radio frequency system, and a communication device, which can reduce the number of components that a signal passes through from a first interface to a second interface in a phase shifter, shorten the signal link, and reduce insertion loss.

[0004] In a first aspect, an embodiment of the present application provides a phase shifter, comprising: a first interface, a second interface, a first branch, and a second branch, the first branch comprising a first phase shifter, a first impedance matching device, and a first switching device, one end of the first phase shifter being connected to the first interface, the first switching device being connected to the other end of the first phase shifter and the first impedance matching device, and the first switching device being used to control the first branch to be turned on or off; the second branch comprising a second phase shifter, a second impedance matching device, and a second switching device, one end of the second phase shifter being connected to the first interface, the second switching device being connected to the other end of the second phase shifter and the second impedance matching device, and the second switching device being used to control the second branch to be turned on or off; the phase shift amounts of the first phase shifter and the second phase shifter are different; the first impedance matching device and the second impedance matching device are used to reflect signals to the first interface so that the signals enter the conductive branch.

[0005] With the above arrangement, when the first branch is turned on, the first interface and the second interface transmit signals via the first phase shift device. Simultaneously, the second phase shift device, the second switch device, and the second impedance matching device reflect the signal from the first interface toward the first interface, so that the signal enters the shut-off branch. When the second branch is turned on, the first interface and the second interface transmit signals via the second phase shift device. Simultaneously, the first phase shift device, the first switch device, and the first impedance matching device reflect the signal from the first interface toward the first interface, so that the signal enters the shut-off branch. The number of devices between the first interface and the second interface is small, which shortens the signal link and reduces the insertion loss of the phase shifter.

[0006] Furthermore, when the first branch is closed, the signal from the first interface is reflected back toward the first interface after passing through the first impedance matching device, allowing the signal to enter the conductive branch, thereby reducing signal leakage. When the second branch is closed, the signal from the first interface is reflected back toward the first interface after passing through the second impedance matching device, allowing the signal to enter the conductive branch, thereby reducing signal leakage.

[0007] In some embodiments that may include the above embodiments, the other end of the first phase shift device is further connected to the second interface, and the other end of the second phase shift device is further connected to the second interface. In this arrangement, the first and second phase shift devices are directly connected to the second interface, which can further reduce the number of components between the first and second interfaces, shorten the signal chain, and further reduce the insertion loss of the phase shifter.

[0008] In some embodiments that may include the above embodiments, the first switching device is further connected to the second interface, the first switching device being configured to connect the first phase shift device to the first impedance matching device or the second interface; the second switching device is further connected to the second interface, the second switching device being configured to connect the second phase shift device to the second impedance matching device or the second interface. With this arrangement, the first phase shift device is connected to the second interface via the first switching device, and the second phase shift device is connected to the second interface via the second switching device. This arrangement can prevent signals from being transmitted from the second interface to the first phase shift device when the first branch is off, and prevent signals from being transmitted from the second interface to the second phase shift device when the second branch is off, thereby preventing signal leakage and improving phase shifter performance.

[0009] In some embodiments that may include the above embodiments, the first phase shift device and the second phase shift device include at least one of a first transmission line and a first reactive element. This configuration can simplify the structures of the first phase shift device and the second phase shift device.

[0010] In some embodiments, which may include the above embodiments, the first reactive element includes a first inductor and / or a first capacitor.

[0011] In some implementations, the first reactive element includes only a first inductor, one end of the first inductor is connected to the first interface, and the other end of the first inductor is connected to the first switching device. In some implementations, the first reactive element includes only a first capacitor, one end of the first capacitor is connected to the first interface, and the other end of the first capacitor is connected to the first switching device.

[0012] In other implementations, the first reactive element includes a first inductor and a first capacitor; illustratively, one end of the first capacitor is connected to the first interface, the other end of the first capacitor is connected to the first switching device, one end of the first inductor is connected to one end of the first capacitor connected to the first switching device, and the other end of the first inductor is grounded; wherein there can be two first capacitors, one end of a first capacitor is connected to the first interface, the other end of the first capacitor is connected to one end of the second capacitor, the other end of the other first capacitor is connected to the first switching device, one end of the first inductor is connected to one end of the first capacitor connected to the other first capacitor, and the other end of the first inductor is grounded.

[0013] Alternatively, one end of the first inductor is connected to the first interface, the other end of the first inductor is connected to the first switching device, one end of the first capacitor is connected to one end of the first inductor, and the other end of the first capacitor is grounded; wherein, there can be two first capacitors, one end of the first inductor is grounded through one first capacitor, and the other end of the first inductor is grounded through another first capacitor.

[0014] In each of the above implementations, by reasonably setting the number and parameters of the first inductor and / or the first capacitor, the impedance of the first reactive element can be changed, thereby enabling the first branch to have different phase shift amounts.

[0015] In some embodiments that may include the above embodiments, the first impedance matching device is configured to equalize the phase of a first reflected signal reflected from the first impedance matching device to the active branch with the phase of a signal from the first interface; and the second impedance matching device is configured to equalize the phase of a second reflected signal reflected from the first impedance matching device to the active branch with the phase of a signal from the first interface. This allows the branch formed by the first impedance matching device, the first switch device, and the first phase shift device to be equivalent to an open circuit, i.e., there is no significant phase difference between the signal reflected from this branch to the active branch and the original signal (the phase difference is approximately an integer multiple of 360°±30°). With this arrangement, when the first branch is off, signal leakage is reduced while preventing interference from the signal reflected from the branch formed by the first impedance matching device, the first switch device, and the first phase shift device on the signal from the active branch. When the second branch is off, signal leakage is reduced while preventing interference from the signal reflected from the branch formed by the second impedance matching device, the second switch device, and the second phase shift device on the signal from the active branch, thereby improving the performance of the phase shifter.

[0016] In some embodiments that may include the above embodiments, one end of the first impedance matching device is connected to the first switching device, the other end of the first impedance matching device is grounded, and the sum of the phase shifts of the first impedance matching device, the first switching device, and the first phase shift device is 90°±30° or 270°±30°. Similarly, one end of the second impedance matching device is connected to the second switching device, the other end of the second impedance matching device is grounded, and the sum of the phase shifts of the second impedance matching device, the second switching device, and the second phase shift device is 90°±30° or 270°±30°. When the branch is closed, this ensures that there is no significant phase difference between the signal reflected to the second branch and the original signal. The other ends of the first impedance matching device and the second impedance matching device are grounded, which can simplify the circuit structure of the phase shifter and reduce the difficulty of manufacturing the phase shifter.

[0017] In some embodiments that may include the above embodiments, one end of a first impedance matching device is connected to a first switching device, the other end of the first impedance matching device is open, and the sum of the phase shifts of the first impedance matching device, the first switching device, and the first phase shift device is 0°±30° or 180°±30°; one end of a second impedance matching device is connected to a second switching device, the other end of the second impedance matching device is open, and the sum of the phase shifts of the second impedance matching device, the second switching device, and the second phase shift device is 0°±30° or 180°±30°, to ensure that there is no significant phase difference between the signal reflected back to the closed branch and the original signal. In this configuration, with the other ends of the first impedance matching device and the second impedance matching device open, the circuit structure of the phase shifter can be simplified, reducing the difficulty of manufacturing the phase shifter.

[0018] In some embodiments that may include the above embodiments, the first impedance matching device and the second impedance matching device include at least one of a second transmission line, a conductor, and a second reactive element. With this arrangement, the first impedance matching device and the second impedance matching device have simple structures and are easy to manufacture.

[0019] In an implementation in which the first impedance matching device includes a second transmission line, one end of the second transmission line is connected to the first switching device, and the other end of the second transmission line may be grounded or open. In an implementation in which the second impedance matching device includes a second transmission line, one end of the second transmission line is connected to the second switching device, and the other end of the second transmission line may be grounded or open.

[0020] In an implementation where the first impedance matching device includes a wire, one end of the wire is connected to the first switching device, and the other end of the wire may be grounded or open. In an implementation where the second impedance matching device includes a wire, one end of the wire is connected to the second switching device, and the other end of the wire may be grounded or open.

[0021] In some embodiments, which may include the above embodiments, the second reactive element includes a second inductor and / or a second capacitor.

[0022] In some implementations, the second reactive element includes a second inductor, one end of the second inductor is connected to the first switching device, and the other end of the second inductor is a ground end or an open end.

[0023] In some implementations, the second reactive element includes a second capacitor, one end of the second capacitor is connected to the first switching device, and the other end of the second capacitor is a ground end or an open end.

[0024] In some implementations, the second reactive element includes a second inductor and a second capacitor. The second inductor and the second capacitor may be connected in series. Accordingly, one end of the second capacitor is connected to the first switching device, and the other end of the second capacitor is connected to one end of the second inductor. The other end of the second inductor may be grounded or open. Of course, the second inductor and the second capacitor may also be connected in parallel. Accordingly, one end of the second capacitor and the second inductor are both connected to the first switching device, and the other end of the second capacitor and the other end of the second inductor are both open or grounded.

[0025] It is understood that by properly setting the structure and / or parameters of the first impedance matching device, the impedance of the first impedance matching device can be adjusted, thereby changing the phase shift of the first impedance matching device. Properly setting the structure and / or parameters of the second impedance matching device can also adjust the impedance of the second impedance matching device, thereby changing the phase shift of the second impedance matching device.

[0026] In some embodiments that may include the above embodiments, the first switching device includes a first transistor and a second transistor, the first transistor includes a first electrode, a first gate, and a second electrode, the first electrode is connected to the first phase shift device, and the second electrode is connected to the second interface; the second transistor includes a third electrode, a second gate, and a fourth electrode, the third electrode is connected to the first phase shift device, and the fourth electrode is connected to the first impedance matching device.

[0027] The first gate can control the conduction of the first transistor, and the second gate can control the conduction of the second transistor. The control signals received by the first and second gates are isolated from the communication signal transmitted by the first branch, thereby preventing interference with the control signals and improving the performance of the phase shifter. Exemplarily, the first and second transistors may include gallium nitride high electron mobility transistors (GaN HEMTs), gallium arsenide high electron mobility transistors (GaAs HEMTs), silicon metal oxide on insulator field effect transistors (Si SOI MOSFETs), etc.

[0028] It can be understood that, at the same time, only one of the first triode and the second triode is turned on; illustratively, when the first triode is turned on, the signal can be transmitted between the first electrode and the second electrode, at this time the second triode is turned off, the signal cannot be transmitted between the third electrode and the fourth electrode, and at this time the first branch is turned on; when the first triode is turned off, the signal cannot be transmitted between the first electrode and the second electrode, at this time the second triode is turned on, the signal can be transmitted between the third electrode and the fourth electrode, and at this time the first branch is turned off.

[0029] In some embodiments including the above embodiments, there are multiple first transistors, and the multiple first transistors are connected in parallel. In this configuration, all first transistors need to be turned on at the same time to achieve the connection between the first phase shift device and the second interface.

[0030] Alternatively, multiple first transistors may be connected in parallel, and the first gates of the corresponding first transistors may be connected so that the same control signal can control whether each first transistor is conductive or not. Of course, the first gates of the first transistors may receive different control signals, which is not limited in this embodiment of the present application. Multiple first transistors may be connected in parallel, that is, any of the multiple first transistors may be conductive, to achieve a connection between the first phase shift device and the second interface. This prevents the operation of the phase shifter from being affected by a failure of a single first transistor.

[0031] In some embodiments including the above embodiments, there are multiple second transistors, which are connected in series. In this configuration, all second transistors need to be turned on at the same time to achieve connection between the first phase shift device and the first impedance matching device.

[0032] Alternatively, multiple second transistors may be connected in parallel, and the second gates of the corresponding second transistors may be connected so that the same control signal can control whether each second transistor is conductive or not. Of course, the second gates of each second transistor may receive different control signals, which is not limited in this embodiment of the present application. Multiple second transistors may be connected in parallel, that is, any of the multiple second transistors may be conductive, to achieve connection between the first phase shifting device and the first impedance matching device. This prevents the operation of the phase shifter from being affected by a failure of a single second transistor.

[0033] In some embodiments that may include the above embodiments, the first switching device includes a first diode device and a second diode device, the first diode device includes a first diode, a first DC blocking capacitor, a second DC blocking capacitor, a first control line, and a second control line, the anode of the first diode is connected to the second interface via the first DC blocking capacitor, the cathode of the first diode is connected to the first phase shift device via the second DC blocking capacitor, the first control line is connected to the anode of the first diode, and the second control line is connected to the cathode of the first diode. The voltages at the anode and cathode of the first diode can be controlled by the first control line and the second control line. When the voltage provided to the anode by the first control line is higher than the voltage provided to the cathode by the second control line, the first diode is turned on, thereby enabling signal transmission between the first phase shift device and the second interface; when the voltage provided to the anode by the first control line is lower than the voltage provided to the cathode by the second control line, the first diode is turned off, and signal transmission between the first phase shift device and the second interface cannot be performed.

[0034] It can be understood that in order to keep the first diode turned on or off, the first control line and the second control line provide a DC control signal (DC power). The first DC blocking capacitor can prevent the DC control signal from the first control line and the second control line from being transmitted to the first phase shift device, and the second DC blocking capacitor can prevent the DC control signal from the first control line and the second control line from being transmitted to the second interface to avoid the influence caused by the DC control signal.

[0035] Similarly, the second diode device includes a second diode, a third DC blocking capacitor, a fourth DC blocking capacitor, a third control line, and a fourth control line. The anode of the second diode is connected to the first phase-shift device via the third DC blocking capacitor, the cathode of the second diode is connected to the first impedance matching device via the fourth DC blocking capacitor, the third control line is connected to the anode of the second diode, and the fourth control line is connected to the cathode of the second diode. The voltages at the anode and cathode of the second diode can be controlled by the third and fourth control lines. When the voltage provided to the anode by the third control line is higher than the voltage provided to the cathode by the fourth control line, the second diode conducts, enabling signal transmission between the first phase-shift device and the first impedance matching device. When the voltage provided to the anode by the third control line is lower than the voltage provided to the cathode by the fourth control line, the second diode is cut off, and signal transmission between the first phase-shift device and the first impedance matching device is prevented.

[0036] It can be understood that in order to keep the second diode turned on or off, the third control line and the fourth control line provide a DC control signal (DC power). The third DC blocking capacitor can prevent the DC control signal from the third control line and the fourth control line from being transmitted to the first phase shift device, and the fourth DC blocking capacitor can prevent the DC control signal from the third control line and the fourth control line from being transmitted to the first impedance matching device to avoid the influence caused by the DC control signal.

[0037] In the above implementation, at the same time, only one of the first diode device and the second diode device is turned on. When the first diode device and the second diode device are turned off, the first branch is turned on; when the first diode device is turned off and the second diode device is turned on, the first branch is turned off.

[0038] In some embodiments that may include the above embodiments, the first switching device may include a single-pole double-throw (SPDT) switch. The SPDT switch in the embodiments of the present application may also be a device with SPDT switch functionality. Exemplarily, the first switching device may be a semiconductor device, including a first sub-switch and a second sub-switch, one end of the first sub-switch being connected to the second interface and the first phase-shifting device, and one end of the second sub-switch being connected to the first phase-shifting device and the first impedance-matching device. When the first sub-switch is closed and the second sub-switch is open, the first branch is conductive, and when the first sub-switch is open and the second sub-switch is closed, the first branch is closed. Of course, the first switching device may also be a mechanical switch, including a handle, a fixed end, a first contact, and a second contact, the first contact being connected to the first impedance-matching device, the second contact being connected to the second interface, and the fixed end being connected to the first phase-shifting device, with the handle being hinged to the fixed end. When the handle rotates to contact the second contact, the first branch is conductive, and when the handle rotates to contact the first contact, the first branch is closed.

[0039] In some embodiments that may include the above embodiments, the phase shifter includes a first phase shifter and a second phase shifter, wherein the first phase shifter and the second phase shifter are connected in series. When one branch of the first phase shifter is turned on, a different branch of the second phase shifter is turned on, and the phase shifter can output signals with different phases, so that the phase shifter can output multiple signals with different phases.

[0040] In some embodiments that may include the above embodiments, the first phase shifter includes two branches, a first branch and a second branch, the second phase shifter includes two branches, a first branch and a second branch, and the second interface of the first phase shifter can be connected to the first interface of the second phase shifter to achieve a series connection between the first phase shifter and the second phase shifter. The phase shift amount of the first branch in the first phase shifter can be The phase shift of the second branch can be The phase shift of the first branch in the second phase shifter can be The phase shift of the second branch can be When the first branch in the first phase shifter is turned on and the first branch in the second phase shifter is turned on, the phase shift of the phase shifter is When the first branch in the first phase shifter is turned on and the second branch in the second phase shifter is turned on, the phase shift of the phase shifter is When the second branch in the first phase shifter is turned on and the first branch in the second phase shifter is turned on, the phase shift of the phase shifter is When the second branch in the first phase shifter is turned on and the second branch in the second phase shifter is turned on, the phase shift of the phase shifter is That is, the phase shifter can output four signals with different phases.

[0041] In some embodiments that may include the above embodiments, the first phase shifter and the second phase shifter may be connected via a second impedance matching element to adjust the signal phase of the signal transmitted to the second phase shifter and achieve impedance matching between the first phase shifter and the second phase shifter.

[0042] In some embodiments that may include the above embodiments, the first interface of the first phase shifter may be connected to the first interface of the second phase shifter to implement a series connection between the first phase shifter and the second phase shifter. In other embodiments, the second interface of the first phase shifter may be connected to the second interface of the second phase shifter to implement a series connection between the first phase shifter and the second phase shifter.

[0043] In a second aspect, an embodiment of the present application further provides a phase shifter module, comprising: a substrate and the above phase shifter, wherein the phase shifter is disposed on the substrate.

[0044] The phase shifter module provided by the embodiment of the present application has the following characteristics: when the first branch is turned on, the first interface and the second interface transmit signals through the first phase shift device. At the same time, the second phase shift device, the second switch device, and the second impedance matching device reflect the signal from the first interface to the first interface so that the signal enters the turned-on branch; when the second branch is turned on, the first interface and the second interface transmit signals through the second phase shift device. At the same time, the first phase shift device, the first switch device, and the first impedance matching device reflect the signal from the first interface to the first interface so that the signal enters the turned-on branch; the number of devices between the first interface and the second interface is small, which shortens the signal link and reduces the insertion loss of the phase shifter. In addition, the reduction in the number of devices between the first interface and the second interface can reduce the area of ​​the substrate (for example, the area of ​​the chip), thereby reducing the production cost of the phase shifter module.

[0045] In some embodiments that may include the above embodiments, the first and second phase shifting devices are integrated into the phase shifting device, and the first and second impedance matching devices are integrated into the impedance matching device. This arrangement can improve the integration of the phase shifter module. Exemplarily, both the phase shifting device and the impedance matching device are disposed on a substrate to secure the phase shifting device and the impedance matching device.

[0046] In some embodiments that may include the above embodiments, the phase shifter module further includes a control device disposed on the substrate and connected to the first switching device and the second switching device. The control device is configured to control the first switching device and the second switching device to achieve conduction between the first branch and the second branch.

[0047] In some embodiments including the above embodiments, the first switching device and the second switching device are integrated into the switching device. Such an arrangement can further improve the integration of the phase shift module.

[0048] In some embodiments, including the aforementioned embodiments, the switching device and the control device are integrated into an integrated chip. This arrangement further improves the integration of the phase shifter module and eliminates the need for wiring connecting the switching device and the control device on a substrate, simplifying the structure of the phase shifter module.

[0049] In some embodiments, including those described above, the phase shifter and the impedance matching device are integrated into an integrated chip. This arrangement further improves the integration of the phase shifter module and eliminates the need for wiring on the substrate connecting the control device to the phase shifter and the impedance matching device 104, simplifying the structure of the phase shifter module.

[0050] In a third aspect, an embodiment of the present application further provides an antenna feed system, which includes an antenna and the phase shifter or the phase shifter module as described above, and the antenna is connected to the first interface or the second interface.

[0051] The antenna feed system provided in the embodiment of the present application includes the phase shifter in the above embodiment, and thus can achieve the same technical effects and solve the same technical problems.

[0052] In a fourth aspect, an embodiment of the present application further provides a radio frequency system, which includes a radio frequency device and the phase shifter as described above or the phase shifter module as described above, and the radio frequency device is connected to the first interface or the second interface.

[0053] The radio frequency system provided in the embodiment of the present application includes the phase shifter in the above embodiment, and thus can achieve the same technical effects and solve the same technical problems.

[0054] In a fifth aspect, an embodiment of the present application also provides a communication device, comprising: a baseband device, a radio frequency device, an antenna, and the phase shifter as described above or the phase shifter module as described above, one end of the radio frequency device is connected to the baseband device, the other end of the radio frequency device is connected to the first interface, and the antenna is connected to the second interface; or, one end of the radio frequency device is connected to the baseband device, the other end of the radio frequency device is connected to the second interface, and the antenna is connected to the first interface.

[0055] The communication device provided in the embodiment of the present application includes the phase shifter in the above embodiment, and can therefore achieve the same technical effects and solve the same technical problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0057] Figure 2 A schematic diagram of the structure of the antenna feeder system provided in an embodiment of the present application;

[0058] Figure 3 A schematic diagram of the structure of the radio frequency system provided in an embodiment of the present application;

[0059] Figure 4a Schematic diagram of the structure in which the first phase shift device in the phase shifter provided in the embodiment of the present application is directly connected to the first interface Figure 1 ;

[0060] Figure 4b Schematic diagram of the structure in which the first phase shift device in the phase shifter provided in the embodiment of the present application is directly connected to the first interface Figure 2 ;

[0061] Figure 4c Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 1 ;

[0062] Figure 5 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 2 ;

[0063] Figure 6 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 3 ;

[0064] Figure 7 A schematic structural diagram of a plurality of first transistors connected in series in a phase shifter provided in an embodiment of the present application;

[0065] Figure 8 A schematic diagram of the structure of multiple first transistors connected in parallel in the phase shifter provided in an embodiment of the present application;

[0066] Figure 9 Schematic diagram 4 of the structure of the phase shifter provided in an embodiment of the present application;

[0067] Figure 10 for Figure 9 A schematic structural diagram of the first diode device;

[0068] Figure 11 A schematic diagram of the structure in which the impedance matching device in the phase shifter provided in an embodiment of the present application is a wire;

[0069] Figure 12 Schematic diagram of the structure of the first reactance element in the phase shifter provided in the embodiment of the present application Figure 1 ;

[0070] Figure 13 Schematic diagram of the structure of the first reactance element in the phase shifter provided in the embodiment of the present application Figure 2 ;

[0071] Figure 14 Schematic diagram of the structure of the first reactance element in the phase shifter provided in the embodiment of the present application Figure 3 ;

[0072] Figure 15 Schematic diagram 4 of the structure in which the impedance matching device in the phase shifter provided in an embodiment of the present application is a first reactive element;

[0073] Figure 16 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 5 ;

[0074] Figure 17 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 6 ;

[0075] Figure 18 for Figure 17 Schematic diagram of phase shift difference of the phase shifter shown;

[0076] Figure 19 for Figure 17 Insertion loss diagram of the phase shifter shown;

[0077] Figure 20 for Figure 17 Schematic diagram of return loss of the phase shifter shown;

[0078] Figure 21 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 7 ;

[0079] Figure 22 for Figure 21 Schematic diagram of phase shift difference of the phase shifter shown;

[0080] Figure 23 for Figure 21 Insertion loss diagram of the phase shifter shown;

[0081] Figure 24 for Figure 21 Schematic diagram of return loss of the phase shifter shown;

[0082] Figure 25 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 8 ;

[0083] Figure 26 for Figure 25 Schematic diagram of phase shift difference of the phase shifter shown;

[0084] Figure 27 for Figure 25 Insertion loss diagram of the phase shifter shown;

[0085] Figure 28 for Figure 25 Schematic diagram of return loss of the phase shifter shown;

[0086] Figure 29 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 9 ;

[0087] Figure 30 for Figure 29 Schematic diagram of phase shift difference of the phase shifter shown;

[0088] Figure 31 for Figure 29 Insertion loss diagram of the phase shifter shown;

[0089] Figure 32 for Figure 29 Schematic diagram of return loss of the phase shifter shown;

[0090] Figure 33a Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 10 ;

[0091] Figure 33b A schematic structural diagram of a phase shifter provided in an embodiment of the present application in which the other end of the first impedance matching device is an open end and the other end of the second impedance matching device is a ground end;

[0092] Figure 34 for Figure 33a Schematic diagram of phase shift difference of the phase shifter shown;

[0093] Figure 35 for Figure 33a Insertion loss diagram of the phase shifter shown;

[0094] Figure 36 for Figure 33a Schematic diagram of return loss of the phase shifter shown;

[0095] Figure 37 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 11 ;

[0096] Figure 38 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 12 ;

[0097] Figure 39 for Figure 38 Schematic diagram of the phase shift of the phase shifter shown;

[0098] Figure 40 for Figure 38 Insertion loss diagram of the phase shifter shown;

[0099] Figure 41 for Figure 38 Schematic diagram of return loss of the phase shifter shown;

[0100] Figure 42 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 13 ;

[0101] Figure 43 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 14 ;

[0102] Figure 44 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 15 ;

[0103] Figure 45 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 16 ;

[0104] Figure 46 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 17 ;

[0105] Figure 47 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 18 ;

[0106] Figure 48 for Figure 47 Schematic diagram of the phase shift of the phase shifter shown;

[0107] Figure 49 for Figure 47 Insertion loss diagram of the phase shifter shown;

[0108] Figure 50 for Figure 47 The return loss of the phase shifter shown is shown in Figure 2. Figure 1 ;

[0109] Figure 51 for Figure 47 The return loss of the phase shifter shown is shown in Figure 2. Figure 2 ;

[0110] Figure 52 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 19 ;

[0111] Figure 53 Schematic diagram of the structure of the phase shifter provided in the embodiment of the present application Figure 20 ;

[0112] Figure 54 Schematic diagram of the structure of the phase shifter module provided in the embodiment of the present application Figure 1 ;

[0113] Figure 55 Schematic diagram of the structure of the phase shifter module provided in the embodiment of the present application Figure 2 ;

[0114] Figure 56 Schematic diagram of the structure of the phase shifter module provided in the embodiment of the present application Figure 3 ;

[0115] Figure 57 Schematic diagram 4 of the structure of the phase shifter module provided in an embodiment of the present application;

[0116] Figure 58 Schematic diagram of the structure of the phase shifter module provided in the embodiment of the present application Figure 5 .

[0117] Description of reference numerals:

[0118] 10: Phase shifter; 11: Baseband device; 12: Radio frequency device; 13: Antenna; 14: Radio frequency link; 16: Antenna feed system; 17: Radio frequency system; 20: First phase shifter; 30: Second phase shifter; 100: First branch; 101: First impedance matching element; 102: Substrate; 103: Phase shift device; 104: Impedance matching element; 105: Control device; 106: Switch device; 107: Integrated chip; 108: Second impedance matching element; 110: First phase shift device; 111: Microstrip line; 112: First reactive element; 113: First inductor; 114: First capacitor; 120: First impedance matching element; 121: Microstrip line; 122: Conductor; 123: Second reactive element; 124: Second inductor; 125: Second capacitor; 130: First switching device; 131: First transistor; 132: Second transistor; 134: First diode device; 135: First diode; 136: First DC blocking capacitor; 137: Second DC blocking capacitor; 138: First control line; 139: Second control line; 140: Second diode device; 200: Second branch; 210: Second phase-shift device; 220: Second impedance matching device; 230: Second switching device; 231: Third transistor; 232: Fourth transistor; 300: Third branch; 310: Third phase-shift device; 320: Third impedance matching device; 330: Third switching device; 400: Fourth branch; 410: Fourth phase-shift device; 420: Fourth impedance matching device; 430: Fourth switching device, R: Isolation resistor. DETAILED DESCRIPTION

[0119] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0120] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0121] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0122] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, an electrical connection, a coupled connection, or a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium. Among them, coupling can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which is understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be referred to as capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitor through coupling between the gap between two conductive parts.

[0123] The following is an introduction to the terms that may be used in the embodiments of this application:

[0124] Grounding refers to coupling with the ground / floor via a grounding structure and / or grounding circuit. In one embodiment, grounding can be achieved through physical grounding, such as achieving physical grounding at a specific location on the frame through a portion of the middle frame's structural components (or referred to as a physical ground). In one embodiment, grounding can be achieved through device grounding, such as grounding through a capacitor, inductor, resistor, or other device connected in series or parallel (or referred to as a device ground).

[0125] Electrical length: Electrical length can refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0126]

[0127] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0128] Open end, ground end: In some embodiments, the terms "open end" and "ground end" are relative to each other, such that a ground end is grounded, while an open end is not. In some embodiments, an open end is not electrically connected to another conductor. In one embodiment, an open end may also be referred to as a floating end, a free end, an open end, or an open end.

[0129] Impedance: Impedance is a measure of the resistance to an electrical signal. Generally speaking, impedance is a complex number, with the real part called input resistance, denoted by Ri, and the imaginary part called input reactance, denoted by Xi.

[0130] Phase shift: The phase change of the same signal before and after passing through a certain device, branch, etc. For example, the phase of a signal at the input end of a branch is The phase at the output of this branch is , accordingly, the phase shift of this branch is

[0131] Phase shift difference: The phase difference of the same signal after passing through the phase shifter under different gating states. For example, when the phase shifter is in the first gating state, the phase of the signal after passing through the phase shifter is The phase shifter is in the second selection state, and the phase of the same signal after passing through the phase shifter is Correspondingly, the phase shift difference of the phase shifter is

[0132] The present application provides a communication device, which may include a communication base station, a router, a mobile hotspot (Wi-Fi), and other devices capable of wired or wireless signal transmission. Figure 1 As shown, in an implementation where the communication device includes a communication base station, the communication base station may include a baseband device 11, a radio frequency device 12, an antenna 13, and a phase shifter 10. The baseband device 11 is connected to one end of the radio frequency device 12, and the other end of the radio frequency device 12 is connected to the phase shifter 10. The phase shifter 10 is also connected to the antenna 13. The baseband device 11 is used to process baseband signals and may include mobile access network equipment. The radio frequency device 12 is used to receive and transmit baseband signals, modulate and demodulate radio frequency signals, process data, and perform power amplification. When transmitting a signal, the baseband device 11 sends the baseband signal to the radio frequency device 12. The radio frequency device 12 forms a radio frequency signal based on the baseband signal and sends the radio frequency signal to the phase shifter 10. After passing through the phase shifter 10, the signal is transmitted to the antenna 13, so that the antenna 13 can transmit a wireless signal outward.

[0133] Continue to refer to Figure 1 In some implementations, the communication base station may be a hybrid beamforming (HBF) base station system. Accordingly, the baseband device 11 may form multiple signal streams, and the RF device 12 may include multiple RF chains 14. Each RF chain 14 is used to receive one signal stream. Each RF chain 14 is connected to multiple phase shifters 10, and each phase shifter 10 is connected to an antenna 13. The phase shifter 10 can adjust the signal phase shift of the corresponding antenna 13. The phase shifters 10 connected to each RF chain 14 can form a specific phase distribution. The output waves of the corresponding antennas 13 are superimposed, thereby forming a wireless signal with a specific transmission direction.

[0134] Please refer to Figure 2 The present embodiment further provides an antenna feed system 16, which includes an antenna 13 and a phase shifter 10. Phase shifter 10 can adjust the phase of a radio frequency signal received by antenna 13. Exemplarily, antenna feed system 16 can include multiple antennas 13 and multiple phase shifters 10, with each antenna 13 connected to a phase shifter 10 to form an antenna array. Alternatively, antenna feed system 16 can include multiple antenna arrays.

[0135] In the implementation of the antenna feed system 16 applied to the above-mentioned communication base station, each RF chain 14 can be connected to an antenna array 13, that is, each phase shifter 10 in an antenna array 13 is connected to the same RF chain 14 to receive the same RF signal.

[0136] Please refer to Figure 3 The present application also provides a radio frequency system 17, which includes a radio frequency device 12 and a phase shifter 10. The radio frequency device 12 is connected to the phase shifter 10 and is configured to send radio frequency signals to the phase shifter 10. For example, the radio frequency device 12 may include one or more radio frequency chips to receive and transmit baseband signals, modulate and demodulate radio frequency signals, perform data processing, and perform power amplification.

[0137] Please refer to Figure 4a-4cThe embodiment of the present application provides a phase shifter 10, which can be applied to the fields of phased array radar, mobile communication, digital microwave communication, instrumentation, smart antenna system, etc.; illustratively, the phase shifter 10 can be applied to the communication equipment, radio frequency system and antenna feed system in the above embodiments. The phase shifter 10 may include a first interface a, a second interface b, a first branch 100 and a second branch 200. One end of the first branch 100 and the second branch 200 are both connected to the first interface a, and the other end of the first branch 100 and the second branch 200 are both connected to the second interface b. The phase shift amounts of the first branch 100 and the second branch 200 are different. By turning on (selecting) the first branch 100 or the second branch 200, the signal from the first interface a to the second interface b can have different phase shift amounts.

[0138] For example, a first impedance matching element 101 is provided at the first interface a and / or the second interface b. The first impedance matching element 101 has a certain impedance. Reasonable setting of the first impedance matching element 101 can realize the phase shifter 10 and the Figure 1 Impedance matching between the RF device 12 and the antenna 13 is shown. For example, the first impedance matching element 101 may include a matching inductor, a matching capacitor, a microstrip line, a waveguide, and the like.

[0139] It can be understood that when the first branch 100 is turned on (selected), the first interface a and the second interface b transmit signals through the first branch 100; when the first branch 100 is turned off (not selected), signals cannot be transmitted between the first interface a and the second interface b through the first branch 100. Similarly, when the second branch 200 is turned on (selected), signals can be transmitted between the first interface a and the second interface b through the second branch 200; when the second branch 200 is turned off (not selected), signals cannot be transmitted between the first interface a and the second interface b through the second branch 200. Furthermore, in the phase shifter 10 of the embodiment of the present application, only one of the first branch 100 and the second branch 200 is turned on at any given moment; that is, at any given moment, signals can only be transmitted between the first interface a and the second interface b through the turned-on branch.

[0140] Continue to refer to Figure 4a-4c In the embodiment of the present application, the signal can be transmitted from the first interface a to the second interface b, that is, the first interface a is the input end of the phase shifter 10, and the second interface b is the output end of the phase shifter 10; or the signal can be transmitted from the second interface b to the first interface a, that is, the first interface a is the output end of the phase shifter 10, and the second interface b is the input end of the phase shifter 10. The embodiment of the present application does not limit the transmission direction of the signal.

[0141] In the embodiment of the present application, the first branch 100 includes a first phase shifter 110, a first impedance matching device 120, and a first switch device 130. One end of the first phase shifter 110 is connected to the first interface a, and the first switch device 130 is connected to the other end of the first phase shifter 110 and the first impedance matching device 120. The first switch device 130 is used to control whether the first branch 100 is turned on (selected) or off (unselected). It will be understood that when the first branch 100 is turned on, the first switch device 130 enables signals to be transmitted between the first interface a, the first phase shifter 110, and the second interface b, so that signals can be transmitted between the first interface a and the second interface b through the first branch 100; when the first branch 100 is turned off, signals cannot be transmitted between the first interface a and the second interface b through the first branch 100.

[0142] Similarly, the second branch 200 includes a second phase-shifting device 210, a second impedance-matching device 220, and a second switching device 230. One end of the second phase-shifting device 210 is connected to the first interface a, and the second switching device 230 is connected to the other end of the second phase-shifting device 210 and the second impedance-matching device 220. The second switching device 230 is used to control whether the second branch 200 is turned on (selected) or off (unselected). It will be understood that when the second branch 200 is turned on, the second switching device 230 enables signals to be transmitted between the first interface a, the second phase-shifting device 210, and the second interface b, thereby allowing signals to be transmitted between the first interface a and the second interface b through the second branch 200. When the second branch 200 is turned off, signals cannot be transmitted between the first interface a and the second interface b through the second branch 200.

[0143] In the above implementation, the first phase shifter 110 has a certain phase shift. After the signal passes through the first phase shifter 110, the phase of the signal changes, resulting in a certain phase difference between the signals at the first interface a and the second interface b. Exemplarily, the first phase shifter 110 may include at least one of a first transmission line (such as a microstrip line, stripline, waveguide, etc.) and a first inductor-capacitor (LC element) to simplify the structure of the first phase shifter 110. Of course, the first phase shifter 110 may also have other structures with a certain phase shift, and this embodiment of the present application is not limited thereto.

[0144] It is understood that the first reactive element 112 may include a first inductor and / or a first capacitor. In some implementations, the first reactive element 112 includes only a first inductor, one end of which is connected to the first interface a, and the other end of which is connected to the first switching device 130. In some implementations, the first reactive element 112 includes only a first capacitor, one end of which is connected to the first interface a, and the other end of which is connected to the first switching device 130.

[0145] Please refer to Figure 5 In other implementations, the first reactive element 112 includes a first inductor 113 and a first capacitor 114; illustratively, one end of the first capacitor 114 is connected to the first interface a, the other end of the first capacitor 114 is connected to the first switching device 130, one end of the first inductor 113 is connected to one end of the first switching device 130 connected to the first capacitor 114, and the other end of the first inductor 113 is grounded; wherein there can be two first capacitors 114, one end of a first capacitor 114 is connected to the first interface a, the other end of the first capacitor 114 is connected to one end of the second capacitor 125, the other end of the other first capacitor 114 is connected to the first switching device 130, one end of the first inductor 113 is connected to one end of the first capacitor 114 connected to the other first capacitor 114, and the other end of the first inductor 113 is grounded.

[0146] Alternatively, please refer to Figure 6 One end of the first inductor 113 is connected to the first interface a, the other end of the first inductor 113 is connected to the first switching device 130, one end of the first capacitor 114 is connected to one end of the first inductor 113, and the other end of the first capacitor 114 is grounded; wherein, there can be two first capacitors 114, one end of the first inductor 113 is grounded through one first capacitor 114, and the other end of the first inductor 113 is grounded through another first capacitor 114.

[0147] In each of the above implementations, by properly setting the number and parameters of the first inductor 113 and / or the first capacitor 114, the impedance of the first reactive element 112 can be changed, thereby enabling the first branch 100 to have different phase shifts. The phase shift of the first branch 100 is the sum of the phase shifts of the first phase shift device 110 and the first switch device 130.

[0148] Continue to refer to Figure 4aIn some embodiments, the other end of the first phase shift device 110 is further connected to the second interface b, and the other end of the second phase shift device 210 is further connected to the second interface b. The first phase shift device 110 and the second phase shift device 210 are directly connected to the second interface b. When the first branch 100 is enabled, the signal directly enters the second interface b from the first phase shift device 110; when the second branch 200 is enabled, the signal directly enters the second interface b from the second phase shift device 210. This can reduce the number of components between the first interface a and the second interface b, shorten the signal link, and reduce the insertion loss of the phase shifter.

[0149] It will be appreciated that when the first branch 100 is enabled, the first switch device 130 disconnects the first impedance matching device 120 from the first phase shift device 110. When the first branch 100 is not enabled, the first switch device 130 connects the first impedance matching device 120 to the first phase shift device 110. In this case, the first impedance matching device 120 effectively opens the first branch 100, preventing signals from being transmitted through the first branch 100. Similarly, when the second branch 200 is enabled, the second switch device 230 disconnects the second impedance matching device 220 from the second phase shift device 210. When the second branch 200 is not enabled, the second switch device 230 connects the second impedance matching device 220 to the second phase shift device 210. In this case, the second impedance matching device 220 effectively opens the second branch 200, preventing signals from being transmitted through the second branch 200.

[0150] For example, Figure 4b As shown, when the first branch 100 is not selected, the first impedance matching device 120 can effectively open the first branch 100. Accordingly, the signal reflected back to the first interface a by the first impedance matching device 120, the first switch device 130, and the first phase shift device 110 is relatively strong. At this time, the signal received by the second interface b from the first branch 100 is relatively weak and can be ignored, making the first branch 100 effectively open. For example, when the phase shift of the first phase shift device 110 is 270°±30°, the first impedance matching device 120 can be effectively grounded to achieve the effective open circuit of the first branch 100. Similarly, when the second branch 200 is not selected, the second impedance matching device 220 can effectively open the second branch 200. Accordingly, the signal reflected back to the first interface a via the second impedance matching device 220, the second switch device 230, and the second phase shift device 210 is relatively strong. At this time, the signal from the second branch 200 received by the second interface b is relatively weak and negligible, thus effectively opening the second branch 200. For example, when the phase shift of the second phase shift device 210 is 90°±30°, the second impedance matching device 220 can be effectively grounded, thereby effectively opening the second branch 200.

[0151] Continue to refer to Figure 4c In some implementations, the first switching device 130 is further connected to the second interface b. The first switching device 130 is used to connect the first phase shift device 110 to the first impedance matching device 120 or the second interface b to enable or disable the first branch 100. The second switching device 230 is further connected to the second interface b. The second switching device 230 is used to connect the second phase shift device 210 to the second impedance matching device 220 or the second interface b to enable or disable the second branch 200. That is, when the first branch 100 is enabled, the first phase shift device 110 is connected to the second interface b via the first switching device 130. At this time, the first switching device 130 disconnects the first phase shift device 110 from the first impedance matching device 120. When the first branch 100 is not enabled, the first phase shift device 110 is connected to the first impedance matching device 120 via the first switching device 130. At this time, the first switching device 130 disconnects the first phase shift device 110 from the second interface b. Similarly, when the second branch 200 is enabled, the second phase-shifting device 210 is connected to the second interface b via the second switching device 230. At this time, the second switching device 230 disconnects the second phase-shifting device 210 from the second impedance-matching device 220. When the second branch 200 is not enabled, the second phase-shifting device 210 is connected to the second impedance-matching device 220 via the second switching device 230. At this time, the second switching device 230 disconnects the second phase-shifting device 210 from the second interface b. The present embodiment does not impose any restrictions on the first switching device 130; any device capable of enabling or disabling the first branch 100 is sufficient.

[0152] In some implementations, the first switching device 130 may include a single-pole double-throw switch (SPDT). The SPDT in the embodiment of the present application may also be a device with SPDT switch function. Exemplarily, the first switching device 130 may be a semiconductor device, including a first sub-switch and a second sub-switch, one end of the first sub-switch is connected to the second interface b and the first phase shift device 110, and one end of the second sub-switch is connected to the first phase shift device 110 and the first impedance matching device 120. When the first sub-switch is closed and the second sub-switch is disconnected, the first branch 100 is selected. When the first sub-switch is disconnected and the second sub-switch is closed, the first branch 100 is not selected. Of course, the first switching device 130 can also be a mechanical switch, including a handle, a fixed end, a first contact and a second contact, the first contact is connected to the first impedance matching device 120, the second contact is connected to the second interface b, the fixed end is connected to the first phase shift device 110, and the handle is hinged on the fixed end; when the handle is rotated to contact the second contact, the first branch 100 is selected, and when the handle is rotated to contact the first contact, the first branch 100 is not selected.

[0153] Please refer to Figure 5 and Figure 6 In some implementations, the first switching device 130 includes a first transistor 131 and a second transistor 132. Specifically, the first switching device 130 is a semiconductor device. The first transistor 131 includes a first gate, a first electrode, and a second electrode. The first electrode is connected to the first phase shift device 110, and the second electrode is connected to the second interface b. The second transistor includes a third electrode, a second gate, and a fourth electrode. The third electrode is connected to the first phase shift device 110, and the fourth electrode is connected to the first impedance matching device 120. The first gate can control the conduction of the first transistor 131, and the second gate can control the conduction of the second transistor 132. The control signals received by the first and second gates are isolated from the communication signals transmitted by the first branch 100, thereby preventing interference with the control signals and improving the performance of the phase shifter 10. For example, the first transistor 131 and the second transistor 132 may include a gallium nitride high electron mobility transistor (GaN HEMT), a gallium arsenide high electron mobility transistor (GaAs HEMT), a silicon metal oxide on insulator field effect transistor (Si SOI MOSFET), or the like.

[0154] It can be understood that, at the same time, only one of the first triode 131 and the second triode 132 is turned on; illustratively, when the first triode 131 is turned on, the signal can be transmitted between the first electrode and the second electrode, at this time the second triode 132 is turned off, the signal cannot be transmitted between the third electrode and the fourth electrode, and at this time the first branch 100 is selected; when the first triode 131 is turned off, the signal cannot be transmitted between the first electrode and the second electrode, at this time the second triode 132 is turned on, the signal can be transmitted between the third electrode and the fourth electrode, and at this time the first branch 100 is not selected.

[0155] Please refer to Figure 7 In the above implementation, there may be multiple first transistors 131, and the multiple first transistors 131 may be connected in series. Accordingly, the first gates of the first transistors 131 are connected so that the same control signal can control whether the first transistors 131 are turned on or off. In this configuration, the first phase shift device 110 (such as Figure 5 For example, an isolation resistor R may be provided at the first gate of each first transistor 131, and the isolation resistor R may prevent the radio frequency signal from being transmitted to the device connected to the first gate.

[0156] like Figure 8As shown, of course, multiple first transistors 131 can also be connected in parallel, and the first gates of the corresponding first transistors 131 can be connected so that the same control signal can control whether each first transistor 131 is turned on or off. Of course, the first gates of each first transistor 131 can receive different control signals, which is not limited in this embodiment of the present application. Multiple first transistors 131 are connected in parallel, that is, any first transistor 131 among the multiple first transistors 131 is turned on, which can realize the connection between the first phase shift device 110 and the second interface b. Exemplarily, an isolation resistor R can be provided at the first gate of each first transistor 131, and the isolation resistor R can prevent the radio frequency signal from being transmitted to the device connected to the first gate.

[0157] It is understandable that the embodiment of the present application does not limit the number of the first transistors 131 . For example, the number of the first transistors 131 may be two, three, four, or the like.

[0158] Similarly, there may be multiple second transistors 132, and the multiple second transistors 132 may be connected in series. Accordingly, the second gates of the second transistors 132 are connected to each other so that the same control signal can control whether each second transistor 132 is turned on or off. With this configuration, the second transistors 132 must be turned on simultaneously to achieve connection between the first phase shift device 110 and the first impedance matching device 120. Of course, the multiple second transistors 132 may also be connected in parallel, and the second gates of the corresponding second transistors 132 may be connected to each other so that the same control signal can control whether each second transistor 132 is turned on or off. Of course, the second gates of the second transistors 132 may receive different control signals, which is not limited in this embodiment of the present application. The plurality of second transistors 132 are connected in parallel. That is, any one of the plurality of second transistors 132 is turned on to achieve a connection between the first phase shifter 110 and the first impedance matching device 120. This prevents the operation of the phase shifter 10 from being affected by a failure of a single second transistor 132. It should be understood that the embodiment of the present application does not limit the number of second transistors 132. For example, there may be two, three, or four second transistors 132.

[0159] Please refer to Figure 9 and Figure 10In other implementations, the first switching device 130 includes a first diode device 134 and a second diode device 140, the first diode device 134 includes a first diode 135, a first DC blocking capacitor 136, a second DC blocking capacitor 137, a first control line 138 and a second control line 139, the anode of the first diode 135 is connected to the second interface b through the first DC blocking capacitor 136, the cathode of the first diode 135 is connected to the first phase shift device 110 through the second DC blocking capacitor 137, the first control line 138 is connected to the anode of the first diode 135, and the second control line 139 is connected to the cathode of the first diode 135. The voltages at the anode and cathode of the first diode 135 can be controlled by the first control line 138 and the second control line 139. When the voltage provided to the anode by the first control line 138 is higher than the voltage provided to the cathode by the second control line 139, the first diode 135 is turned on, thereby enabling signal transmission between the first phase shift device 110 and the second interface b. When the voltage provided to the anode by the first control line 138 is lower than the voltage provided to the cathode by the second control line 139, the first diode 135 is turned off, and signal transmission between the first phase shift device 110 and the second interface b is not possible.

[0160] It can be understood that in order to keep the first diode 135 turned on or off, the first control line 138 and the second control line 139 provide a DC control signal (DC power), and the first DC blocking capacitor 136 can prevent the DC control signal from the first control line 138 and the second control line 139 from being transmitted to the first phase shift device 110, and the second DC blocking capacitor 137 can prevent the DC control signal from the first control line 138 and the second control line 139 from being transmitted to the second interface b to avoid the influence caused by the DC control signal.

[0161] Similarly, the second diode device 140 includes a second diode, a third DC blocking capacitor, a fourth DC blocking capacitor, a third control line, and a fourth control line. The anode of the second diode is connected to the first phase shift device 110 via the third DC blocking capacitor, and the cathode of the second diode is connected to the first impedance matching device 120 via the fourth DC blocking capacitor. The third control line is connected to the anode of the second diode, and the fourth control line is connected to the cathode of the second diode. The voltages at the anode and cathode of the second diode can be controlled by the third and fourth control lines. When the voltage provided to the anode by the third control line is higher than the voltage provided to the cathode by the fourth control line, the second diode conducts, enabling signal transmission between the first phase shift device 110 and the first impedance matching device 120. When the voltage provided to the anode by the third control line is lower than the voltage provided to the cathode by the fourth control line, the second diode is cut off, and signal transmission between the first phase shift device 110 and the first impedance matching device 120 is prevented.

[0162] It can be understood that in order to keep the second diode turned on or off, the third control line and the fourth control line provide a DC control signal (DC power). The third DC blocking capacitor can prevent the DC control signal from the third control line and the fourth control line from being transmitted to the first phase shift device 110, and the fourth DC blocking capacitor can prevent the DC control signal from the third control line and the fourth control line from being transmitted to the first impedance matching device 120, so as to avoid the influence caused by the DC control signal.

[0163] In the above implementation, at any given moment, only one of the first diode device 134 and the second diode device 140 is turned on. When the first diode device 134 and the second diode device 140 are turned off, the first branch 100 is enabled. When the first diode device 134 is turned off and the second diode device 140 is turned on, the first branch 100 is not enabled.

[0164] It is understandable that there may be multiple first diodes 135 in the first diode device 134, and the multiple first diodes 135 may be connected in series or in parallel; similarly, there may be multiple second diodes in the second diode device 140, and the multiple second diodes may be connected in series or in parallel.

[0165] Continue to refer to Figure 4c In this embodiment of the present application, the first impedance matching device 120 is used to reflect the signal toward the first interface a, so that the signal enters the enabled branch. When the first branch 100 is not enabled, the signal from the first interface a is reflected toward the first interface a after passing through the first impedance matching device 120 and enters the second branch 200, thereby reducing signal leakage.

[0166] In some embodiments, the first impedance matching device 120 is configured to ensure that the phase of the first reflected signal reflected from the first impedance matching device 120 to the enabled branch is approximately equal to the phase of the signal at the first interface a, thereby rendering the branch formed by the first impedance matching device 120, the first switch device 130, and the first phase shifter 110 equivalent to an open circuit. This means that there is no significant phase difference between the signal reflected from this branch to the enabled branch and the original signal (the phase difference is approximately an integer multiple of 360°±30°). This configuration reduces signal leakage while also preventing interference caused by signals reflected from the branch formed by the first impedance matching device 120, the first switch device 130, and the first phase shifter 110, thereby improving the performance of the phase shifter 10.

[0167] In some implementations, one end of the first impedance matching device 120 is connected to the first switching device 130, and the other end of the first impedance matching device 120 is grounded (serving as a ground terminal). Accordingly, the sum of the phase shifts of the first impedance matching device 120, the first switching device 130, and the first phase shifter 110 is 90°±30° or 270°±30°, ensuring that there is no significant phase difference between the signal reflected to the selected branch and the original signal. Grounding the other end of the first impedance matching device 120 can simplify the circuit structure of the phase shifter 10 and reduce the difficulty of manufacturing the phase shifter 10.

[0168] In some implementations, one end of the first impedance matching device 120 is connected to the first switching device 130, while the other end of the first impedance matching device 120 is open-circuited (open-ended). Accordingly, the sum of the phase shifts of the first impedance matching device 120, the first switching device 130, and the first phase shifter 110 is 180°±30° or 0°±30°, ensuring that there is no significant phase difference between the signal reflected to the selected branch and the original signal. This configuration, with the other end of the first impedance matching device 120 open-circuited, simplifies the circuit structure of the phase shifter 10 and reduces the difficulty of manufacturing the phase shifter 10.

[0169] In other implementations, one end of the first impedance matching device 120 is connected to the first switching device 130, and the other end of the first impedance matching device 120 can also be connected to other devices. In this case, reasonably setting the sum of the phase shift amounts of the first impedance matching device 120, the first switching device 130 and the first phase shift device 110 can also ensure that there is no obvious phase difference between the signal reflected to the selected branch and the original signal.

[0170] In the embodiment of the present application, the first impedance matching device 120 may include at least one of a second transmission line (such as a microstrip line, stripline, or waveguide), a conductive wire, and a second inductor-capacitor (LC element), so that the first impedance matching device 120 has a certain impedance. This configuration simplifies the structure of the first impedance matching device 120 and facilitates fabrication. It will be appreciated that the electrical length of the conductive wire can be much less than the length of a single wavelength, and the resulting phase shift can be negligible.

[0171] In some implementations, the first impedance matching device 120 may include a second transmission line, one end of the second transmission line is connected to the first switching device 130 , and the other end of the second transmission line may be a ground end or an open end.

[0172] Please refer to Figure 4c and Figure 11In some implementations, the first impedance matching device 120 may include a wire 122 , one end of the wire 122 is connected to the first switching device 130 , and the other end of the wire 122 may be a ground end or an open end.

[0173] In the implementation mode where the first impedance matching device 120 includes a second reactive element, the second reactive element may include a second inductor 124 and / or a second capacitor 125. Figure 4c and Figure 12 , exemplarily, in an implementation in which the second reactance element includes a second inductor 124, one end of the second inductor 124 is connected to the first switching device 130, and the other end of the second inductor 124 is grounded or open; please refer to Figure 4c and Figure 13 In an implementation in which the second reactance element 123 includes a second capacitor 125 , one end of the second capacitor 125 is connected to the first switching device 130 , and the other end of the second capacitor 125 is grounded or open.

[0174] Please refer to Figure 4c and Figure 14 In the implementation mode where the second reactive element 123 includes a second inductor 124 and a second capacitor 125, the second inductor 124 and the second capacitor 125 can be connected in series. Accordingly, one end of the second capacitor 125 is connected to the first switching device 130, and the other end of the second capacitor 125 is connected to one end of the second inductor 124. The other end of the second inductor 124 can be grounded or open. Figure 4c and Figure 15 Of course, the second inductor 124 and the second capacitor 125 can also be connected in parallel. Accordingly, one end of the second capacitor 125 and the second inductor 124 are both connected to the first switching device 130, and the other end of the second capacitor 125 and the other end of the second inductor 124 are both open ends or grounded ends.

[0175] It is understood that by properly setting the structure and / or parameters of the first impedance matching device 120, the impedance of the first impedance matching device 120 can be adjusted, thereby changing the phase shift of the first impedance matching device 120. For example, by adjusting the parameters of the second inductor 124 and / or the second capacitor 125, the impedance of the second reactive element 123 can be changed, thereby adjusting the phase shift of the first impedance matching device 120.

[0176] Continue to refer to Figure 4cIn the embodiment of the present application, the second branch 200 has a substantially similar structure to the first branch 100. The phase shift of the second branch 200 differs from the phase shift of the first branch 100. This allows for different phase differences between the first interface a and the second interface b in different gating states, resulting in a certain phase shift difference in the phase shifter 10. The embodiment of the present application does not impose any restrictions on the phase shift difference; the phase shift difference can be any angle between 0° and 360°.

[0177] It is understood that the second phase shifter 210 has a certain phase shift amount, and the structure of the second phase shifter 210 is substantially the same as that of the first phase shifter 110, but the phase shift amount of the second phase shifter 210 is different from that of the first phase shifter 110. The second switching device 230 is used to connect the second phase shifter 210 to the second impedance matching device 220 or the second interface b to enable or disable the second branch 200. The second switching device 230 has a substantially similar structure to the first switching device 130, but when the first switching device 130 controls the first branch 100 to be enabled, the second switching device 230 controls the second branch 200 to be disabled. When the second switching device 230 controls the second branch 200 to be enabled, the first switching device 130 controls the first branch 100 to be disabled. The second impedance matching device 220 is used to reflect the signal toward the first interface a so that the signal enters the selected branch. When the second branch 200 is not selected, the signal from the first interface a is reflected toward the first interface a after being transmitted to the second impedance matching device 220 and enters the first branch 100. The structure of the second impedance matching device 220 and the first impedance matching device 120 can be substantially the same. Since the second phase shift device 210 and the first phase shift device 110 have different phase shift amounts, the phase shift amounts of the second impedance matching device 220 and the first impedance matching device 120 can also be different.

[0178] Continue to refer to Figure 4c In the embodiment of the present application, the number of branches in the phase shifter 10 is not limited to two (a first branch 100 and a second branch 200). In some implementations, the number of branches can be greater than two (e.g., three, four, five, etc.). For example, in an implementation with three branches, the phase shifter 10 further includes a third branch. The structure of the third branch can be substantially the same as that of the first branch 100. The phase shift of the third branch is different from the phase shift of the first branch 100 and the phase shift of the second branch 200, so that the first interface a and the second interface b have different phase differences under different selection states. In an implementation with four branches, the phase shifter 10 further includes a third branch and a fourth branch. The structures of the third branch and the fourth branch can be substantially the same as those of the first branch 100. The phase shift of each branch is different. So that the first interface a and the second interface b have different phase differences under different selection states, so that the phase shifter 10 can output four signals with different phases.

[0179] Continue to refer to Figure 4c In the phase shifter 10 provided by the embodiment of the present application, in the first branch 100, one end of the first phase shift device 110 is connected to the first interface a, the first switch device 130 is connected to the other end of the first phase shift device 110 and the first impedance matching device 120, and the first switch device 130 is used to control whether the first branch 100 is selected or not; in the second branch 200, one end of the second phase shift device 210 is connected to the first interface a, the second switch device 230 is connected to the other end of the second phase shift device 210 and the second impedance matching device 220, and the second switch device 230 is used to control whether the second branch 200 is selected or not; the phase shift amounts of the first phase shift device 110 and the second phase shift device 210 are different; in the first branch 10 When the first interface a and the second interface b are selected, the first phase shift device 110 transmits signals to the first interface a. At the same time, the second phase shift device 210, the second switch device 230, and the second impedance matching device 220 reflect the signal from the first interface a toward the first interface a and enter the selected branch. When the second branch 200 is selected, the first interface a and the second interface b transmit signals to the second phase shift device 210. At the same time, the first phase shift device 110, the first switch device 130, and the first impedance matching device 120 reflect the signal from the first interface a toward the first interface a and enter the selected branch. The number of components between the first interface a and the second interface b is small, which shortens the signal chain and reduces the insertion loss of the phase shifter 10.

[0180] The phase shifter 10 in the embodiment of the present application will be described below with multiple examples:

[0181] Example 1

[0182] Please refer to Figure 16 In this example, the phase shifter 10 includes a first branch 100 and a second branch 200. That is, when the input signals are the same, two signals with different phase shift amounts can be output through different selection states. Accordingly, the phase shifter 10 is a single-bit two-phase phase shifter.

[0183] In this example, the first phase shift device 110 and the second phase shift device 210 may both include, for example, a first transmission line 111, and the first impedance matching device 120 and the second impedance matching device 220 may both include a second reactance element 123. The first switching device 130 includes a first transistor 131 and a second transistor 132. The first transistor 131 includes a first electrode, a first gate, and a second electrode. The first electrode is connected to the first phase shift device 110, and the second electrode is connected to the second interface b. The second transistor 132 includes a third electrode, a second gate, and a fourth electrode. The third electrode is connected to the first phase shift device 110, and the fourth electrode is connected to the first impedance matching device 120. The second switching device 230 includes a third triode 231 and a fourth triode 232. The third triode 231 includes a fifth electrode, a third gate, and a sixth electrode. The fifth electrode is connected to the second phase shift device 210, and the sixth electrode is connected to the second interface b. The fourth triode 232 includes a seventh electrode, a fourth gate, and an eighth electrode. The seventh electrode is connected to the second phase shift device 210, and the eighth electrode is connected to the second impedance matching device 220. By controlling the first gate, the second gate, the third gate, and the fourth gate, the gating state of the first branch 100 and the second branch 200 can be controlled.

[0184] In some implementations, the phase shift of the first branch 100 is 90°±30°, and the phase shift of the second branch 200 is 270°±30°. For example, the impedances of the first phase shift device 110 and the second phase shift device 210 are reasonably set so that the electrical length corresponding to the first branch 100 is The electrical length corresponding to the second branch 200 can be Wherein, λ is the wavelength of the signal. It can be understood that, at this time, the phase shift difference of the phase shifter 10 is 180°±30°.

[0185] In the above implementation, the first impedance matching device 120 is configured to ensure that the phase of the first reflected signal reflected from the first impedance matching device 120 to the first interface a is equal to the phase of the original signal at the first interface a. The second impedance matching device 220 is configured to ensure that the phase difference of the second reflected signal reflected from the first impedance matching device 220 to the first interface a is equal to the phase of the signal at the first interface a. It will be understood that the equal phase difference mentioned above means an equal or substantially equal phase difference. For example, a substantially equal phase difference may be a phase difference within a range of ±30°.

[0186] With this configuration, when the first branch 100 is not enabled, the first reflected signal path formed by the first impedance matching device 120, the first switch device 130, and the first phase shift device 110 is equivalent to an open circuit. This means that there is no significant phase difference between the signal reflected from this branch to the first interface a and the original signal (the phase difference is approximately an integer multiple of 360°±30°). When the second branch 200 is not enabled, the second reflected signal path formed by the second impedance matching device 220, the second switch device 230, and the second phase shift device 210 is equivalent to an open circuit. This means that there is no significant phase difference between the signal reflected from this branch to the first interface a and the original signal. This configuration reduces signal leakage while avoiding interference from reflected signals, thereby improving the performance of the phase shifter 10.

[0187] Please refer to Figure 16 For example, the phase shift of the reflection path of the first reflected signal (the sum of the phase shifts of the first impedance matching device 120, the first switch device 130, and the first phase shift device 110) can be 90°±30° or 270°±30°, and the phase shift of the reflection path of the second reflected signal (the sum of the phase shifts of the second impedance matching device 220, the second switch device 230, and the second phase shift device 210) can be 90°±30° or 270°±30°. Accordingly, the end of the first impedance matching device 120 facing away from the first switch device 130 and the end of the second impedance matching device 220 facing away from the second switch device 230 are both configured as ground terminals. This can simplify the structure of the phase shifter 10 while ensuring that there is no obvious phase difference between the signal reflected back to the first interface a and the original signal.

[0188] Please refer to Figure 17 Exemplarily, the first impedance matching device 120 and the second impedance matching device 220 both include a wire 122 (a short wire whose electrical length is much less than 1 wavelength, and the phase shift can be ignored). One end of the first impedance matching device 120 is connected to the fourth electrode of the second transistor 132, and the other end of the first impedance matching device 120 is grounded. One end of the second impedance matching device 220 is connected to the eighth electrode of the fourth transistor 232, and the other end of the second impedance matching device 220 is grounded.

[0189] In the 3.5GHz frequency band and 200MHZ bandwidth, Figure 18 for Figure 17 The phase shift difference diagram when the first branch 100 is selected and the second branch 200 is selected in the phase shifter 10 is shown. Figure 18 It can be seen that the phase shift difference of the phase shifter 10 is 180°±30°. Figure 19 for Figure 17 The insertion loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 19It can be seen that when the first branch 100 is enabled, the insertion loss of the phase shifter 10 is -0.369 dB, and when the second branch 200 is enabled, the insertion loss of the phase shifter 10 is -0.326 dB. Figure 20 for Figure 17 The return loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 20 It can be seen that when the first branch 100 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -18.4dB and -18.8dB respectively. When the second branch 200 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -22.9dB and -23.6dB respectively. Figures 18-20 It can be seen that Figure 17 The phase shift difference of the phase shifter 10 is 180°, the absolute value of the insertion loss is less than 0.4 dB, and the absolute value of the return loss is greater than 18 dB. It can be seen that the phase shifter 10 in this exemplary embodiment has low signal loss and good communication performance.

[0190] Please refer to Figure 21 In some implementations, the phase shift of the second branch 200 is 90°±30° (270°±30°). For example, the phase shift of the second branch 200 is 90°±30°. Exemplarily, the electrical length corresponding to the second branch 200 can be Where λ is the wavelength of the signal and n is a non-negative integer. When n is zero, the electrical length corresponding to the second branch 200 can be In this implementation, the phase shift of the first branch 100 is a non-special phase shift (not equal to 90°±30° or 270°±30°). For example, the phase shift of the first branch 100 can be 30°±30°, 45°±30°, 120°±30°, etc. The phase shift of the first phase shift device 110 can be reasonably set according to actual usage needs so that the first branch 100 obtains a certain phase shift.

[0191] In the above implementation, the second impedance matching device 220 includes a conductor 122, one end of which is connected to the eighth electrode of the fourth transistor 232, and the other end of which is grounded to ensure that there is no significant phase difference between the signal reflected at the first interface a and the original signal. Accordingly, the first impedance matching device 120 can be selected based on the phase shift amount of the first phase shift device 110 to ensure that there is no significant phase difference between the signal reflected at the first interface a and the original signal. Exemplarily, the first impedance matching device 120 can include a second reactive element 123, which includes a second inductor 124 and a second capacitor 125. The second inductor 124 and the second capacitor 125 are connected in parallel, one end of the second inductor 124 and the first end of the second capacitor 125 are connected to the eighth electrode, and the other end of the second inductor 124 and the other end of the second capacitor 125 are both grounded.

[0192] In the 3.5GHz frequency band and 200MHZ bandwidth, Figure 22 for Figure 21 The phase shift difference diagram when the first branch 100 is selected and the second branch 200 is selected in the phase shifter 10 is shown. Figure 22 It can be seen that the phase shift difference of the phase shifter 10 is 120°±30°. Figure 23 for Figure 21 The insertion loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 23 It can be seen that when the first branch 100 is enabled, the insertion loss of the phase shifter 10 is -0.346 dB, and when the second branch 200 is enabled, the insertion loss of the phase shifter 10 is -0.344 dB. Figure 24 for Figure 21 The return loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 24 It can be seen that when the first branch 100 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -18.4dB and -18.7dB respectively. When the second branch 200 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -19.3dB and -22.1dB respectively. Figure 21-24 It can be seen that the phase shift difference of the phase shifter 10 is 120°, the absolute value of the insertion loss is less than 0.4 dB, and the absolute value of the return loss is greater than 18 dB. It can be seen that the phase shifter 10 in this exemplary embodiment has low signal loss and good communication performance.

[0193] Please refer to Figure 25In other implementations, the phase shifts of the first branch 100 and the second branch 200 are both non-special phase shifts (not equal to 90°±30° or 270°±30°). Accordingly, the first impedance matching device 120 and the second impedance matching device 220 both include a second reactance element 123. The first impedance matching device 120 may include a second inductor 124 and a second capacitor 125, which are connected in parallel. One end of the second inductor 124 and the first end of the second capacitor 125 are connected to the fourth electrode, and the other end of the second inductor 124 and the other end of the second capacitor 125 are both grounded, so that the first impedance matching device 120 has a positive phase shift. The second impedance matching device 220 may include a second inductor 124, one end of the second inductor 124 is connected to the eighth electrode of the fourth transistor 232, and the other end of the second inductor 124 is grounded, so that the second impedance matching device 220 has a negative phase shift.

[0194] In the 3.5GHz frequency band and 200MHZ bandwidth, Figure 26 for Figure 25 The diagram shows the phase shift difference when the first branch 100 is enabled and the second branch 200 is enabled in the phase shifter 10. As can be seen from the diagram, the phase shift difference of the phase shifter 10 is 250°±30°. Figure 27 for Figure 25 The insertion loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 27 It can be seen that when the first branch 100 is enabled, the insertion loss of the phase shifter 10 is -0.172 dB, and when the second branch 200 is enabled, the insertion loss of the phase shifter 10 is -0.264 dB. Figure 28 for Figure 25 The return loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 2 when the first branch 100 is enabled and the second branch 200 is enabled. Figure 28 It can be seen that when the first branch 100 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -20.3dB and -23.1dB respectively. When the second branch 200 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -18.2dB and -18.4dB respectively. Figures 25-28 It can be seen that the phase shift difference of the phase shifter 10 is 250°, the absolute value of the insertion loss is less than 0.4 dB, and the absolute value of the return loss is greater than 18 dB. It can be seen that the phase shifter 10 in this exemplary embodiment has low signal loss and good communication performance.

[0195] Example 2

[0196] Please refer to Figure 29 The difference between this example and Example 1 is that both the first impedance matching device 120 and the second impedance matching device 220 include a second transmission line 121 .

[0197] In some implementations, one end of the first impedance matching device 120 is connected to the fourth electrode of the first switching device 130, and the other end of the first impedance matching device 120 can be a ground end; similarly, one end of the second impedance matching device 220 is connected to the eighth electrode of the second switching device 230, and the other end of the second impedance matching device 220 can be a ground end.

[0198] In the above implementation, when the first branch 100 is not enabled, the first reflected signal path formed by the first impedance matching device 120, the first switch device 130, and the first phase shift device 110 is equivalent to an open circuit. That is, there is no significant phase difference between the signal reflected from this branch to the first interface a and the original signal. Accordingly, the phase shift of the first reflected signal path formed by the first impedance matching device 120, the first switch device 130, and the first phase shift device 110 is 90°±30° or 270°±30°. Similarly, when the second branch 200 is not enabled, the second reflected signal path formed by the second impedance matching device 220, the second switch device 230, and the second phase shift device 210 is equivalent to an open circuit. That is, there is no significant phase difference between the signal reflected from this branch to the first interface a and the original signal. Accordingly, the phase shift of the second reflected signal path formed by the second impedance matching device 220, the second switch device 230, and the second phase shift device 210 is 90°±30° or 270°±30°. On the basis of reducing signal leakage, interference of reflected signals is avoided, and the performance of the phase shifter 10 is improved.

[0199] In the 3.5 GHz frequency band and the 200 MHz bandwidth, the other ends of the first impedance matching device 120 and the second impedance matching device 220 are grounded. Figure 30 for Figure 29 The phase shift difference diagram when the first branch 100 is selected and the second branch 200 is selected in the phase shifter 10 is shown. Figure 30 It can be seen that the phase shift difference of the phase shifter 10 is 30°±30°. Figure 31 for Figure 29 The insertion loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 31 It can be seen that when the first branch 100 is enabled, the insertion loss of the phase shifter 10 is -0.176 dB, and when the second branch 200 is enabled, the insertion loss of the phase shifter 10 is -0.192 dB. Figure 32 for Figure 29 The return loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 32It can be seen that when the first branch 100 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -27.6dB and -29.2dB respectively. When the second branch 200 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -22.5dB and -26.2dB respectively. Figure 30-Figure 32 It can be seen that the phase shift difference of the phase shifter 10 is 30°, the absolute value of the insertion loss is less than 0.4 dB, and the absolute value of the return loss is greater than 20 dB. It can be seen that the phase shifter 10 in this exemplary embodiment has low signal loss and good communication performance.

[0200] like Figure 33a As shown, in other implementations, one end of the first impedance matching device 120 is connected to the fourth electrode of the first switching device 130, and the other end of the first impedance matching device 120 can be an open end; similarly, one end of the second impedance matching device 220 is connected to the eighth electrode of the second switching device 230, and the other end of the second impedance matching device 220 can be an open end.

[0201] In the above implementation, when the first branch 100 is not enabled, the first reflected signal reflection path formed by the first impedance matching device 120, the first switch device 130, and the first phase shift device 110 is equivalent to an open circuit. That is, there is no significant phase difference between the signal reflected from this branch to the first interface a and the original signal. Accordingly, the phase shift of the first reflected signal reflection path formed by the first impedance matching device 120, the first switch device 130, and the first phase shift device 110 is 180°±30° or 0°±30°. Similarly, when the second branch 200 is not enabled, the second reflected signal reflection path formed by the second impedance matching device 220, the second switch device 230, and the second phase shift device 210 is equivalent to an open circuit. That is, there is no significant phase difference between the signal reflected from this branch to the first interface a and the original signal. Accordingly, the phase shift of the second reflected signal reflection path formed by the second impedance matching device 220, the second switch device 230, and the second phase shift device 210 is 180°±30° or 0°±30°. On the basis of reducing signal leakage, interference of reflected signals is avoided, thereby improving the performance of the phase shifter 10 .

[0202] In other embodiments, Figure 33b As shown, one end of the first impedance matching device 120 is connected to the fourth electrode of the first switching device 130, and the other end of the first impedance matching device 120 can be an open end; one end of the second impedance matching device 220 is connected to the eighth electrode of the second switching device 230, and the other end of the second impedance matching device 220 can be a ground end. The other ends of the first impedance matching device 120 and the second impedance matching device 220 can be reasonably set to be ground ends or open ends according to actual usage, and the embodiments of the present application are not limited to this.

[0203] In the 3.5 GHz frequency band and the 200 MHz bandwidth, the other ends of the first impedance matching device 120 and the second impedance matching device 220 are open ends. Figure 34 for Figure 33a The diagram shows the phase shift difference when the first branch 100 is enabled and the second branch 200 is enabled in the phase shifter 10. As can be seen from the diagram, the phase shift difference of the phase shifter 10 is 41°±30°. Figure 35 for Figure 33a The insertion loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 35 It can be seen that when the first branch 100 is enabled, the insertion loss of the phase shifter 10 is -0.266 dB, and when the second branch 200 is enabled, the insertion loss of the phase shifter 10 is -0.226 dB. Figure 36 for Figure 33a The return loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 1 , when the first branch 100 is enabled and the second branch 200 is enabled. Figure 36 It can be seen that when the first branch 100 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -26.5dB and -27.3dB respectively. When the second branch 200 is selected, the return losses at the first interface a and the second interface b of the phase shifter 10 are -30.2dB and -31.3dB respectively. Figure 34-36 It can be seen that the phase shift difference of the phase shifter 10 is 41°, the absolute value of the insertion loss is less than 0.4 dB, and the absolute value of the return loss is greater than 20 dB. It can be seen that the phase shifter 10 in this exemplary embodiment has low signal loss and good communication performance.

[0204] Example 3

[0205] like Figure 37As shown, this example differs from Examples 1 and 2 in that the phase shifter 10 further includes a third branch 300 and a fourth branch 400. The third branch 300 includes a third phase shift device 310, a third impedance matching device 320, and a third switch device 330. One end of the third phase shift device 310 is connected to the first interface a, and the third switch device 330 is connected to the other end of the third phase shift device 310 and the third impedance matching device 320. The third switch device 330 is used to control whether the third branch 300 is turned on (selected) or turned off (not selected). The fourth branch 400 includes a fourth phase shift device 410, a fourth impedance matching device 420, and a fourth switch device 430. One end of the fourth phase shift device 410 is connected to the first interface a, and the fourth switch device 430 is connected to the other end of the fourth phase shift device 410 and the fourth impedance matching device 420. The fourth switch device 430 is used to control whether the fourth branch 400 is turned on (selected) or turned off (not selected). At the same time, only one of the first branch 100, the second branch 200, the third branch 300 and the fourth branch 400 is turned on, and when each branch is turned on, the phase shift of the first interface a and the second interface b is different, so that the phase shifter 10 can output four signals with different phases.

[0206] It is understood that the structures of the third phase shifter 310 and the fourth phase shifter 410 are substantially similar to those of the first phase shifter 110, the structures of the third switch device 330 and the fourth switch device 430 are substantially similar to those of the first switch device 130, and the structures of the third impedance matching device 320 and the fourth impedance matching device 420 are substantially similar to those of the first impedance matching device 120. This example will not be further described here. The phase shift amounts of the first phase shifter 110, the second phase shifter 210, the third phase shifter 310, and the fourth phase shifter 410 are all different, so that the phase shifter 10 can output four signals with different phases.

[0207] In some implementations, the first phase shift device 110, the second phase shift device 210, the third phase shift device 310, and the fourth phase shift device 410 may all include a first transmission line, and the first impedance matching device 120, the second impedance matching device 220, the third impedance matching device 320, and the fourth impedance matching device 420 may all include a second reactive element.

[0208] Please refer to Figure 38For example, the phase shift of the signal reflection path corresponding to the second impedance matching device 220 can be 90°±30°, the phase shift of the signal reflection path corresponding to the third impedance matching device 320 can be 270°±30°, and the phase shift of the signal reflection path corresponding to the first impedance matching device 120 and the fourth impedance matching device 410 is a non-special phase shift. Accordingly, the second impedance matching device 220 and the third impedance matching device 330 can both include a conductor 122. One end of the second impedance matching device 220 is connected to the second switch device 230, and the other end of the second impedance matching device 220 can be grounded, so that the signal reflection path formed by the second phase shift device 210, the second switch device 230, and the second impedance matching device 220 is equivalent to an open circuit. Similarly, one end of the third impedance matching device 320 is connected to the third switch device 330, and the other end of the third impedance matching device 320 is also grounded, so that the signal reflection path formed by the third phase shift device 310, the third switch device 330, and the third impedance matching device 320 is equivalent to an open circuit. This configuration can reduce signal leakage and avoid interference from reflected signals when the second branch 200 and the third branch 300 are not enabled.

[0209] It is understood that the first impedance matching device 120 may include a second inductor 124, one end of which is connected to the first switching device 130, and the other end of which may be grounded. Properly setting the impedance of the second inductor 124 can make the signal reflection path formed by the first phase shift device 110, the first switching device 130, and the first impedance matching device 120 equivalent to an open circuit. Similarly, the fourth impedance matching device 410 may include a second inductor 124 and a second capacitor 125, one end of which is connected to the fourth switching device 430, and the other end of which is grounded. Properly setting the impedance of the second inductor 124 and the second capacitor 125 can make the signal reflection path formed by the fourth phase shift device 410, the fourth switching device 430, and the fourth impedance matching device 420 equivalent to an open circuit.

[0210] In the 3.5GHz frequency band and 200MHZ bandwidth, Figure 39 for Figure 38 The phase shift diagram of the phase shifter 10 shown in FIG. Figure 39 It can be seen that when the first branch 100 is enabled, the phase shift of the phase shifter 10 is 0°±30°; when the second branch 200 is enabled, the phase shift of the phase shifter 10 is 60°±30°; when the third branch 300 is enabled, the phase shift of the phase shifter 10 is 120°±30°; when the fourth branch 400 is enabled, the phase shift of the phase shifter 10 is 180°±30°. Figure 40 for Figure 38 The insertion loss diagram of the phase shifter 10 shown in FIG. 1 is shown in FIG. 2 when different branches are selected. Figure 40 It can be seen that when the first branch 100 is selected, the insertion loss of the phase shifter 10 is -0.738 dB, when the second branch 200 is selected, the insertion loss of the phase shifter 10 is -0.616 dB, when the third branch 300 is selected, the insertion loss of the phase shifter 10 is -0.702 dB, and when the fourth branch 400 is selected, the insertion loss of the phase shifter 10 is -0.748 dB. Figure 41 for Figure 38 The return loss diagram of the phase shifter 10 shown when different branches are selected is given by Figure 41 It can be seen that when the first branch 100 is selected, the return losses of the first interface a and the second interface b of the phase shifter 10 are -14.1dB and -14.1dB respectively; when the second branch 200 is selected, the return losses of the first interface a and the second interface b of the phase shifter 10 are -28dB and -42.2dB respectively; when the third branch 300 is selected, the return losses of the first interface a and the second interface b of the phase shifter 10 are -19.1dB and -21.2dB respectively; when the fourth branch 400 is selected, the return losses of the first interface a and the second interface b of the phase shifter 10 are -11.6dB and -14.1dB respectively. Figures 39-41 It can be seen that the absolute value of the insertion loss of the phase shifter 10 is less than 0.4 dB, and the absolute value of the return loss is greater than 11 dB. It can be seen that the phase shifter 10 in this exemplary embodiment has low signal loss and good communication performance.

[0211] Example 4

[0212] Please refer to Figure 42 The difference between this example and Example 1 and Example 2 is that the phase shifter 10 includes a first phase shifter 20 and a second phase shifter 30, the first phase shifter 20 includes a first interface a, a second interface b, a first branch 100 and a second branch 200, wherein the first branch 100 includes a first phase shifter 110, a first impedance matching device 120 and a first switching device 130, one end of the first phase shifter 110 is connected to the first interface a, and the first switching device 130 is configured to connect the first phase shifter 110 to the first impedance matching device 120 or the second interface b; the second branch 200 includes a second phase shifter 210, a second impedance matching device 220 and a second switching device 230, one end of the second phase shifter 210 is connected to the first interface a, and the second switch device 230 is configured to connect the second phase shifter 210 to the second impedance matching device 220 or the second interface b; the phase shift amounts of the first phase shifter 110 and the second phase shifter 210 are different. The number of branches in the first phase shifter 20 is at least two, and the embodiment of the present application does not limit the number of branches in the first phase shifter 20 .

[0213] The structure of the second phase shifter 30 is substantially similar to that of the first phase shifter 20 and will not be further described here. It is understood that the number of branches in the second phase shifter 30 is at least two, and the number of branches in the second phase shifter 30 may be the same as or different from the number of branches in the first phase shifter 20, and this is not limited in this embodiment of the present application.

[0214] In this example, the first phase shifter 20 and the second phase shifter 30 are connected in series. During the transmission process, the signal may sequentially pass through the first phase shifter 20 and the second phase shifter 30, or sequentially pass through the second phase shifter 30 and the first phase shifter 20. For example, in the implementation of the phase shifter applied to the communication device, the signal from Figure 1 The RF signal of the RF device 12 shown first enters the first phase shifter 20, then enters the second phase shifter 30 from the first phase shifter 20, and is transmitted to the antenna 13. It will be understood that when one branch of the first phase shifter 20 is enabled, different branches of the second phase shifter 30 are enabled, and the phase shifters can output signals with different phases, so that the phase shifter 10 can output multiple signals with different phases.

[0215] Please refer to Figure 43 In some implementations, the first phase shifter 20 includes two branches, a first branch 100 and a second branch 200, and the second phase shifter 30 includes two branches, a first branch 100 and a second branch 200. The second interface b of the first phase shifter 20 can be connected to the first interface a of the second phase shifter 30 to achieve a series connection between the first phase shifter 20 and the second phase shifter 30. The phase shift amount of the first branch 100 in the first phase shifter 20 can be The phase shift of the second branch 200 can be The phase shift of the first branch 100 in the second phase shifter 30 can be The phase shift of the second branch 200 can be When the first branch 100 in the first phase shifter 20 is enabled and the first branch 100 in the second phase shifter 30 is enabled, the phase shift of the phase shifter is When the first branch 100 in the first phase shifter 20 is enabled and the second branch 200 in the second phase shifter 30 is enabled, the phase shift of the phase shifter is When the second branch 200 in the first phase shifter 20 is enabled and the first branch 100 in the second phase shifter 30 is enabled, the phase shift of the phase shifter is When the second branch 200 in the first phase shifter 20 is enabled and the second branch 200 in the second phase shifter 30 is enabled, the phase shift of the phase shifter is That is, the phase shifter can output four signals with different phases.

[0216] Exemplarily, the first phase shifter 20 and the second phase shifter 30 may be connected via a second impedance matching element 108 to adjust the phase of the signal transmitted to the second phase shifter 30 and achieve impedance matching between the first phase shifter 20 and the second phase shifter 30. Exemplarily, the second impedance matching element 108 may include a bonding wire (a metal conductor connecting the first phase shifter 20 and the second phase shifter 30), a microstrip line, a matching inductor, or a matching capacitor.

[0217] Please refer to Figure 44 In the above implementation, the first phase shifter 110 and the second phase shifter 210 in the first phase shifter 20 may both include a first transmission line 111, and the first phase shifter 110 and the second phase shifter 210 in the second phase shifter 30 may both include a first transmission line 111. The first impedance matching device 120 and the second impedance matching device 220 in the first phase shifter 20 may both be grounded; and the first impedance matching device 120 and the second impedance matching device 220 in the second phase shifter 30 may both be grounded.

[0218] like Figure 45 As shown, for example, in the first phase shifter 20, the first impedance matching device 120 includes a second inductor 124 and a second capacitor 125, one end of which is connected to the first switch device 130, and the other end of which is grounded. The second impedance matching device 220 includes a wire 122, one end of which is connected to the second switch device 230, and the other end of which is grounded. In the second phase shifter 30, the first impedance matching device 120 includes a second inductor 124, one end of which is connected to the first switch device 130, and the other end of which is grounded. The second impedance matching device 220 includes a wire 122, one end of which is connected to the second switch device 230, and the other end of which is grounded.

[0219] like Figure 46 As shown, in some implementations, in the first phase shifter 20, the first phase shift device 110 includes a first reactive element, the second phase shift device 210 includes a first reactive element 112, and the first impedance matching device 120 and the second impedance matching device 220 both include a second reactive element. In the second phase shifter 30, the first phase shift device 110 and the second phase shift device 210 both include a first reactive element 112, and the first impedance matching device 120 and the second impedance matching device 220 both include a second reactive element.

[0220] like Figure 47As shown, in another implementation, in the first phase shifter 20, the first phase shift device 110 includes a first transmission line 111, the second phase shift device 210 includes a first reactive element 112, and the first impedance matching device 120 and the second impedance matching device 220 both include a second reactive element. In the second phase shifter 30, the first phase shift device 110 and the second phase shift device 210 both include a first reactive element 112, and the first impedance matching device 120 and the second impedance matching device 220 both include a second reactive element.

[0221] It will be appreciated that in an implementation where the first switching device 130 includes a first transistor 131 and a second transistor 132, and the second switching device 230 includes a third transistor 231 and a fourth transistor 232, the first gate and the fourth gate of the first phase shifter 20 are connected, and the second gate and the third gate are connected, so that the first transistor 131 and the fourth transistor 232 are simultaneously turned on or off, and the second transistor 132 and the third transistor 231 are simultaneously turned on or off, thereby ensuring that one of the first branch 100 and the second branch 200 is selected. Similarly, the first gate and the fourth gate of the second phase shifter 30 are connected, and the second gate and the third gate are connected, so that the first transistor 131 and the fourth transistor 232 are simultaneously turned on or off, and the second transistor 132 and the third transistor 231 are simultaneously turned on or off, thereby ensuring that one of the first branch 100 and the second branch 200 is selected. This configuration can simplify the control circuitry and control logic of the phase shifter.

[0222] In the 3.5GHz frequency band and 200MHZ bandwidth, Figure 48 for Figure 47 The phase shift amount diagram of the phase shifter 10 in different gating states is shown in FIG. Figure 48 It can be seen that the phase shifter 10 is in four different selection states, and the phase shift amounts of the phase shifter 10 are 0°±30°, 60°±30°, 120°±30°, and 180°±30°, respectively. Figure 49 for Figure 47 The insertion loss diagram of the phase shifter 10 shown when different branches are selected is given by Figure 49 It can be seen that when the phase shifter 10 is in four different selection states, the insertion losses of the phase shifter 10 are respectively -0.393 dB, -0.367 dB, -0.392 dB, and -0.337 dB. Figure 50 and Figure 51 for Figure 47 The return loss diagram of the phase shifter 10 shown when different branches are selected is given by Figure 50 and Figure 51It can be seen that when the phase shifter 10 is in four different selection states, the return losses are -19.2dB / -21.4dB (corresponding to the first interface and the second interface), -32.3dB / -38.4dB, -16.5dB / -17dB, and -17.1dB / 20.4dB. Figures 48-51 It can be seen that the absolute value of the insertion loss of the phase shifter is less than 0.4 dB, and the absolute value of the return loss is greater than 16 dB. It can be seen that the signal loss of the phase shifter in this example is low and has good communication performance.

[0223] like Figure 52 and Figure 53 As shown, in some examples, the first interface a of the first phase shifter 20 can be connected to the first interface a of the second phase shifter 30 to achieve a series connection between the first phase shifter 20 and the second phase shifter 30. In the first phase shifter 20, the first phase shifter 110 and the second phase shifter 210 both include a first reactive element, and the first impedance matching device 120 and the second impedance matching device 220 both include a second reactive element. In the second phase shifter 30, the first phase shifter 110 and the second phase shifter 210 both include a first reactive element, the first impedance matching device 120 includes a second reactive element, and the second impedance matching device 220 may include a wire. In other examples, the second interface b of the first phase shifter 20 can be connected to the second interface b of the second phase shifter 30 to achieve a series connection between the first phase shifter 20 and the second phase shifter 30.

[0224] Please refer to Figure 54 , the embodiment of the present application also includes a phase shifter module, the phase shifter module may include a substrate 102 and the phase shifter 10 (such as Figure 4c As shown, the phase shifter 10 is disposed on a substrate 102, and the phase shifter 10 can be fixed by the substrate 102. For example, the substrate 102 can include a printed circuit board or a flexible circuit board. Of course, the substrate 102 can also include other dielectric boards, which is not limited in this embodiment of the present application.

[0225] In some embodiments, the first phase shift device 110 and the second phase shift device 210 (eg, Figure 4c The first impedance matching device 120 and the second impedance matching device 220 are integrated into the phase shifter 103, which may include a phase shifter chip. This arrangement improves the integration of the phase shifter module. For example, both the phase shifter 103 and the impedance matching device 104 are disposed on the substrate 102 to secure them.

[0226] In some embodiments, the phase shifter module further includes a control device 105, which is disposed on the substrate 102. The control device 105 is connected to the first switch device 130 and the second switch device 230 (eg, Figure 4c ) are connected to control the first switching device 130 and the second switching device 230 to achieve gating of the first branch 100 and the second branch 200. Exemplarily, the control device 105 may include a chip with certain control functions, which is not limited in the embodiment of the present application.

[0227] Continue to refer to Figure 54 In the above implementation, the first switching device 130 and the second switching device 230 (such as Figure 4c The first switching device 130 and the second switching device 230 are controlled by the control device 105. This arrangement can further improve the integration of the phase shift module.

[0228] Please refer to Figure 55 In some embodiments, the switch device 106 and the control device 105 are integrated into the integrated chip 107. This configuration can further improve the integration of the phase shifter module. At the same time, there is no need to set a circuit connecting the switch device 106 and the control device 105 on the substrate 102, thereby simplifying the structure of the phase shifter module.

[0229] Please refer to Figure 56 In some embodiments, the phase shift device 103 and the impedance matching device 104 are integrated into the integrated chip 107. This configuration can further improve the integration of the phase shifter module. At the same time, there is no need to set lines connecting the control device 105 with the phase shift device 103 and the impedance matching device 104 on the substrate 102, thereby simplifying the structure of the phase shifter module.

[0230] Please refer to Figure 57 In an implementation where the phase shifter includes a first phase shifter 20 and a second phase shifter 30, the switch device 106 and the control device 105 corresponding to the first phase shifter 20 are integrated into one integrated chip 107, the switch device 106 and the control device 105 corresponding to the second phase shifter 30 are integrated into another integrated chip 107, and the phase shift devices 103 corresponding to the first phase shifter 20 and the second phase shifter 30 are integrated together. This arrangement can further improve the integration of the phase shifter and enable the phase shifter to output multiple signals with different phases. Figure 58 As shown, the switch device 106 and the control device 105 corresponding to the first phase shifter 20 and the switch device 106 and the control device 105 corresponding to the second phase shifter 30 are integrated into the same integrated chip 107. This arrangement can further improve the integration of the phase shifters.

[0231] It is understandable that the antenna feed system 16 (eg Figure 2 As shown), radio frequency system 17 (as Figure 3 As shown) and communication equipment (such as Figure 1 As shown) can all include the phase shifter module in the above embodiment.

[0232] The phase shifter module provided in the embodiment of the present application is as follows: Figure 4c As shown, in the first branch 100, one end of the first phase shift device 110 is connected to the first interface a, and the first switch device 130 is connected to the other end of the first phase shift device 110 and the first impedance matching device 120. The first switch device 130 is used to control whether the first branch 100 is selected or not. In the second branch 200, one end of the second phase shift device 210 is connected to the first interface a, and the second switch device 230 is connected to the other end of the second phase shift device 210 and the second impedance matching device 220. The second switch device 230 is used to control whether the second branch 200 is selected or not. The phase shift amounts of the first phase shift device 110 and the second phase shift device 210 are different. When the first branch 100 is selected, The first interface a and the second interface b transmit signals through the first phase shift device 110. At the same time, the second phase shift device 210, the second switch device 230 and the second impedance matching device 220 reflect the signal from the first interface a to the first interface a and enter the selected branch. When the second branch 200 is selected, the first interface a and the second interface b transmit signals through the second phase shift device 210. At the same time, the first phase shift device 110, the first switch device 130 and the first impedance matching device 120 reflect the signal from the first interface a to the first interface a and enter the selected branch. The number of devices between the first interface a and the second interface b is small, which shortens the signal link and reduces the insertion loss of the phase shifter 10. In addition, if Figure 54 As shown, the number of components between the first interface a and the second interface b is reduced, which can reduce the area of ​​the substrate 102 (eg, the area of ​​the chip), thereby reducing the production cost of the phase shifter module.

[0233] The above description is merely a specific embodiment of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A phase shifter, characterized in that: include: a first interface and a second interface; a first branch, the first branch comprising a first phase shift device, a first impedance matching device, and a first switch device, one end of the first phase shift device being connected to the first interface, the first switch device being connected to the other end of the first phase shift device and the first impedance matching device, and the first switch device being used to control the first branch to be turned on or off; a second branch, the second branch comprising a second phase shift device, a second impedance matching device, and a second switch device, one end of the second phase shift device being connected to the first interface, the second switch device being connected to the other end of the second phase shift device and the second impedance matching device, the second switch device being used to control the second branch to be turned on or off; the first phase shift device and the second phase shift device having different phase shift amounts; The first impedance matching device and the second impedance matching device are used to reflect signals toward the first interface so that the signals enter the conductive branch.

2. The phase shifter according to claim 1, wherein: The first phase shift device and the second phase shift device include at least one of a first transmission line and a first reactive element.

3. The phase shifter according to claim 2, wherein: The first reactive element includes a first inductor and / or a first capacitor.

4. The phase shifter according to any one of claims 1 to 3, characterized in that: The other end of the first phase shift device is also connected to the second interface; the other end of the second phase shift device is also connected to the second interface.

5. The phase shifter according to any one of claims 1 to 3, characterized in that: The first switching device is also connected to the second interface, and the first switching device is used to connect the first phase shift device to the first impedance matching device or the second interface; the second switching device is also connected to the second interface, and the second switching device is used to connect the second phase shift device to the second impedance matching device or the second interface.

6. The phase shifter according to any one of claims 1 to 5, characterized in that: The first impedance matching device is used to make the phase of the first reflected signal reflected through it to the conductive branch equal to the signal phase of the first interface; the second impedance matching device is used to make the phase of the second reflected signal reflected through it to the conductive branch equal to the signal phase of the first interface.

7. The phase shifter according to claim 6, wherein: One end of the first impedance matching device is connected to the first switching device, the other end of the first impedance matching device is grounded, and the sum of the phase shifts of the first impedance matching device, the first switching device, and the first phase shift device is 90°±30° or 270°±30°; One end of the second impedance matching device is connected to the second switching device, the other end of the second impedance matching device is grounded, and the sum of the phase shifts of the second impedance matching device, the second switching device and the second phase shift device is 90°±30° or 270°±30°.

8. The phase shifter according to claim 6, wherein: One end of the first impedance matching device is connected to the first switching device, the other end of the first impedance matching device is an open end, and the sum of the phase shifts of the first impedance matching device, the first switching device, and the first phase shift device is 0°±30° or 180°±30°; One end of the second impedance matching device is connected to the second switching device, the other end of the second impedance matching device is an open end, and the sum of the phase shifts of the second impedance matching device, the second switching device and the second phase shift device is 0°±30° or 180°±30°.

9. The phase shifter according to any one of claims 6 to 8, characterized in that: The first impedance matching device and the second impedance matching device include at least one of a second transmission line, a conductor, and a second reactive element.

10. The phase shifter according to claim 9, wherein: The second reactive element includes a second inductor and / or a second capacitor.

11. The phase shifter according to any one of claims 1 to 10, characterized in that: The first switching device includes a first transistor and a second transistor, the first transistor includes a first electrode, a first gate and a second electrode, the first electrode is connected to the first phase shift device, and the second electrode is connected to the second interface; the second transistor includes a third electrode, a second gate and a fourth electrode, the third electrode is connected to the first phase shift device, and the fourth electrode is connected to the first impedance matching device.

12. The phase shifter according to claim 11, wherein: There are multiple first transistors, and the multiple first transistors are connected in parallel or in series.

13. The phase shifter according to claim 11 or 12, characterized in that: There are multiple second transistors, and the multiple second transistors are connected in parallel or in series.

14. The phase shifter according to any one of claims 1 to 13, characterized in that: The first switching device includes a first diode device and a second diode device, the first diode device includes a first diode, a first DC blocking capacitor, a second DC blocking capacitor, a first control line, and a second control line, the anode of the first diode is connected to the second interface via the first DC blocking capacitor, the cathode of the first diode is connected to the first phase shift device via the second DC blocking capacitor, the first control line is connected to the anode of the first diode, and the second control line is connected to the cathode of the first diode; The second diode device includes a second diode, a third DC blocking capacitor, a fourth DC blocking capacitor, a third control line and a fourth control line. The anode of the second diode is connected to the first phase shift device through the third DC blocking capacitor, the cathode of the second diode is connected to the first impedance matching device through the fourth DC blocking capacitor, the third control line is connected to the anode of the second diode, and the fourth control line is connected to the cathode of the second diode.

15. The phase shifter according to any one of claims 1 to 14, characterized in that: The phase shifter further comprises: a third branch, the third branch comprising a third phase-shifting device, a third impedance matching device, and a third switching device, one end of the third phase-shifting device being connected to the first interface, the third switching device being connected to the other end of the third phase-shifting device and the third impedance matching device, and the third switching device being used to control the third branch to be turned on or off; a fourth branch, the fourth branch comprising a fourth phase shift device, a fourth impedance matching device, and a fourth switching device; one end of the fourth phase shift device is connected to the first interface, the fourth switching device is connected to the other end of the fourth phase shift device and the fourth impedance matching device, and the fourth switching device is used to control the fourth branch to be turned on or off; the first phase shift device, the second phase shift device, the third phase shift device, and the fourth phase shift device have different phase shift amounts.

16. The phase shifter according to any one of claims 1 to 15, characterized in that: The phase shifter includes a first phase shifter and a second phase shifter, and the first phase shifter and the second phase shifter are connected in series.

17. A phase shifter module, characterized in that: include: A substrate and the phase shifter according to any one of claims 1 to 16, wherein the phase shifter is arranged on the substrate.

18. The phase shifter module according to claim 17, wherein: The first phase shift device and the second phase shift device are integrated into a phase shift device, and the first impedance matching device and the second impedance matching device are integrated into an impedance matching device.

19. The phase shifter module according to claim 18, wherein: The phase shifter module further includes a control device, which is disposed on the substrate and connected to the first switching device and the second switching device.

20. The phase shifter module according to claim 19, wherein: The first switching device and the second switching device are integrated into the switching device.

21. The phase shifter module according to claim 20, wherein: The switch device and the control device are integrated into an integrated chip.

22. The phase shifter module according to claim 21, wherein: The phase shift device and the impedance matching device are integrated into the integrated chip.

23. An antenna feed system, characterized in that: It comprises an antenna and the phase shifter according to any one of claims 1 to 16 or the phase shifter module according to any one of claims 17 to 22, wherein the antenna is connected to the first interface or the second interface.

24. A radio frequency system, characterized in that: It comprises a radio frequency device and the phase shifter according to any one of claims 1 to 16 or the phase shifter module according to any one of claims 17 to 22, wherein the radio frequency device is connected to the first interface or the second interface.

25. A communication device, characterized in that: include: A baseband device, a radio frequency device, an antenna, and the phase shifter according to any one of claims 1 to 16 or the phase shifter module according to any one of claims 17 to 22, wherein one end of the radio frequency device is connected to the baseband device, the other end of the radio frequency device is connected to the first interface, and the antenna is connected to the second interface; Alternatively, one end of the radio frequency device is connected to the baseband device, the other end of the radio frequency device is connected to the second interface, and the antenna is connected to the first interface.

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