Power divider, wireless communication device and electronic equipment

Abstract

The invention discloses a power divider, a wireless communication device and electronic equipment, and the power divider comprises a first power module, a second power module and an isolation resistor. The first switching device, the second switching device and the quarter-wavelength line are connected in parallel by any one of the power molecule parts; the input end of the first power molecule part and the input end of the second power molecule part are respectively connected with the input port of the power divider; the output end of the first power molecule part is connected with the first output port of the power divider; the output end of the second power molecule part is connected with the second output port of the power divider; the second end of the quarter-wavelength line in the first power molecule part is connected to the second end of the quarter-wavelength line in the second power molecule part through an isolation resistor. According to the embodiment of the invention, the insertion loss of the signal input into the power divider is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of terminal equipment, and in particular to a power splitter, a wireless communication device and an electronic device. Background Art

[0002] The radio frequency system is a crucial component of wireless communication devices. When operating in carrier aggregation, it typically needs to distribute input power to each branch circuit in a specific ratio. Existing technologies offer a power splitter that combines power splitting and single-pass functionality. However, in single-pass mode, the splitter suffers from relatively high insertion loss, impacting overall channel gain. Summary of the Invention

[0003] The embodiments of the present application provide a power splitter, a wireless communication device, and an electronic device, which are beneficial for reducing the insertion loss of the power splitter and can also improve the isolation between the working path and the non-working path in the single-pass mode.

[0004] In a first aspect, an embodiment of the present application provides a power divider, comprising a first power molecular section, a second power molecular section, and an isolation resistor; any one power molecular section A of the first power molecular section and the second power molecular section comprises a first switching device, a second switching device, and a quarter-wavelength line;

[0005] The first end of the first switching device is connected to the input end of the work unit A, and the second end of the first switching device is connected to the output end of the work unit A;

[0006] The first end of the quarter-wavelength line is connected to the input end of the power subunit A, the second end of the quarter-wavelength line is connected to the first end of the second switching device; the second end of the second switching device is connected to the output end of the power subunit A;

[0007] The input end of the first work molecule unit and the input end of the second work molecule unit are respectively connected to the input port of the power divider; the output end of the first work molecule unit is connected to the first output port of the power divider; the output end of the second work molecule unit is connected to the second output port of the power divider;

[0008] The second end of the quarter-wavelength line in the first work element section is connected to the second end of the quarter-wavelength line in the second work element section through an isolation resistor.

[0009] It can be seen that the power divider provided in the embodiment of the present application connects the first switching device in parallel with the power dividing device, which can reduce the insertion loss without affecting the performance of the power dividing mode. In particular, the insertion loss is significantly improved in the single-pass mode, and the area occupied by the entire circuit is low.

[0010] In combination with the first aspect, in a possible implementation, the work unit A further includes an inductor;

[0011] The first end of the inductor is connected to the input end of the work molecule unit A, and the second end of the inductor is connected to the output end of the work molecule unit A.

[0012] In this implementation, parallel inductors are designed in the first power molecular section and the second power molecular section, which is beneficial to improving the isolation between the two output ports in the single-pass mode.

[0013] In combination with the first aspect, in a possible implementation, the second switching device includes a first switch, a second switch, and a third switch;

[0014] The first end of the first switch is the first end of the second switching device, the second end of the first switch is connected to the first end of the second switch, and the second end of the second switch is the second end of the second switching device; the first end of the third switch is connected to the second end of the first switch and the first end of the second switch, and the second end of the third switch is grounded.

[0015] In this implementation, the third switch in the second switching device is grounded. In the single-pass mode, the third switch is turned on, the transmission path is grounded, and the signal attenuation is increased, which can improve the isolation between the non-working path and the working path (i.e., the first output port and the second output port).

[0016] In combination with the first aspect, in one possible implementation, when the first switching device in the first power subunit is turned off and the second switching device is turned on, and when the first switching device in the second power subunit is turned off and the second switching device is turned on, the signal input from the input port is power-divided by the quarter-wavelength line in the first power subunit, the second switching device, the quarter-wavelength line in the second power subunit, and the second switching device, and then transmitted to the first output port and the second output port respectively.

[0017] In this implementation, the first switching device is connected in parallel with the quarter-wavelength line and the second switching device. In the power splitting mode, the insertion loss is substantially unaffected.

[0018] In combination with the first aspect, in one possible implementation, when the first switching device and the second switching device in the first power molecular unit are turned on and the first switching device and the second switching device in the second power molecular unit are turned off, the signal input from the input port is transmitted to the first output port through the first switching device in the first power molecular unit.

[0019] In this implementation, when the switching device in the first power sub-section is turned on and the switching device in the second power sub-section is turned off, the signal input from the input port is transmitted to the first output port through the first switching device in the first power sub-section without passing through power splitters such as the quarter-wavelength line and the output switch. The signal experiences less impedance, so in single-pass mode, the insertion loss of the signal can be reduced.

[0020] In combination with the first aspect, in one possible implementation, when the first switching device and the second switching device in the first power molecular unit are turned off and the first switching device and the second switching device in the second power molecular unit are turned on, the signal input from the input port is transmitted to the second output port through the first switching device in the second power molecular unit.

[0021] In this implementation, when the switching device in the first power sub-section is turned off and the switching device in the second power sub-section is turned on, the signal input from the input port is transmitted to the second output port through the first switching device in the second power sub-section without passing through power splitters such as the quarter-wavelength line and the output switch. The signal experiences less impedance, so in single-pass mode, the insertion loss of the signal can be reduced.

[0022] In combination with the first aspect, in one possible implementation, when the first switch and the second switch are turned on and the third switch is turned off, the second switch device is in the on state; when the first switch and the second switch are turned off and the third switch is turned on, the second switch device is in the off state.

[0023] With reference to the first aspect, in a possible implementation, the inductance of the inductor in the first work molecule section is equal to the inductance of the inductor in the second work molecule section.

[0024] In this implementation, when the inductance of the inductor in the first power subunit is equal to the inductance of the inductor in the second power subunit, in single-pass mode, the signal goes to any output port, and the isolation between it and the other output port is equivalent.

[0025] With reference to the first aspect, in a possible implementation, the inductance of the inductor is related to the frequency band of the input signal at the input port.

[0026] In this implementation, in single-pass mode, the equivalent capacitor of the non-operating path is connected in parallel with the inductor. A resonant frequency exists between the equivalent capacitor and the inductor, maximizing the isolation between the first and second output ports. Therefore, by adjusting the inductor's value so that this resonant frequency falls within the input signal's frequency band, the isolation between the two output ports can be increased.

[0027] In combination with the first aspect, in one possible implementation, when the first switching device and the second switching device in the first power molecular section are turned on and the first switching device and the second switching device in the second power molecular section are turned off, the inductor in the second power molecular section is connected in parallel with the first switching device and the second switching device in the second power molecular section, and a first LC resonant frequency point exists between the inductor in the second power molecular section and the first switching device and the second switching device in the second power molecular section, and the first LC resonant frequency point falls within the frequency band of the input signal at the input port.

[0028] In this implementation, when the first power molecular section is a working path, the inductor in the second power molecular section and the first switching device and the second switching device in the second power molecular section have a first LC resonant frequency point. When the first LC resonant frequency point falls within the frequency band of the input signal at the input port, the isolation between the first output port and the second output port can be effectively improved.

[0029] In combination with the first aspect, in one possible implementation, when the first switching device and the second switching device in the first power molecular section are turned off and the first switching device and the second switching device in the second power molecular section are turned on, the inductor in the first power molecular section is connected in parallel with the first switching device and the second switching device in the first power molecular section, and a second LC resonant frequency point exists between the inductor in the first power molecular section and the first switching device and the second switching device in the first power molecular section, and the second LC resonant frequency point falls within the frequency band range of the input signal at the input port.

[0030] In this implementation, when the second power molecular unit is a working path, the inductor in the first power molecular unit and the first switching device and the second switching device in the first power molecular unit have a second LC resonant frequency point. When the second LC resonant frequency point falls within the frequency band of the input signal at the input port, the isolation between the first output port and the second output port can be effectively improved.

[0031] In a second aspect, an embodiment of the present application provides a wireless communication device, including a receiving antenna, a radio frequency filter, a low noise amplifier, a radio frequency integrated circuit RFIC, and a power divider as in any one of the embodiments of the first aspect above.

[0032] With reference to the second aspect, in one possible implementation, a receiving antenna is configured to receive a signal;

[0033] A radio frequency filter is used to filter the signal received by the receiving antenna and input the filtered signal into a low-noise amplifier;

[0034] A low noise amplifier is used to amplify the input signal and input the amplified signal into the power divider;

[0035] A power divider, configured to distribute an input signal to a first output port and a second output port, and output a first signal to the RFIC from the first output port and output a second signal to the RFIC from the second output port;

[0036] The RFIC is configured to demodulate the first signal and the second signal.

[0037] In a third aspect, an embodiment of the present application provides an electronic device, comprising a wireless communication device as in any one of the embodiments of the second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0039] Figure 1 is a schematic diagram of a radio frequency system;

[0040] Figure 2 is a schematic diagram of another radio frequency system;

[0041] Figure 3 is a schematic diagram of another radio frequency system;

[0042] Figure 4 1 is a schematic diagram of a circuit structure of a power divider;

[0043] Figure 5 Schematic diagram of the circuit structure of another power divider;

[0044] Figure 6 A schematic diagram of the circuit structure of a power divider provided in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of a power splitting mode of a power splitter provided in an embodiment of the present application;

[0046] Figure 8 A schematic diagram of a single-pass mode of a power splitter provided in an embodiment of the present application;

[0047] Figure 9 A schematic diagram of a single-pass mode of another power splitter provided in an embodiment of the present application;

[0048] Figure 10 A schematic diagram of the circuit structure of another power divider provided in an embodiment of the present application;

[0049] Figure 11 A schematic diagram of an equivalent capacitor provided in an embodiment of the present application;

[0050] Figure 12 A schematic diagram of another equivalent capacitor provided in an embodiment of the present application;

[0051] Figure 13 A schematic diagram of the circuit structure of another power divider provided in an embodiment of the present application;

[0052] Figure 14A A schematic diagram of simulation results of a power splitting mode provided in an embodiment of the present application;

[0053] Figure 14B A schematic diagram of simulation results of another power splitting mode provided in an embodiment of the present application;

[0054] Figure 15A A schematic diagram of a simulation result of a single-pass mode provided in an embodiment of the present application;

[0055] Figure 15B A schematic diagram of simulation results of another single-pass mode provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] The terms "first," "second," "third," and "fourth," etc., in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0057] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] As used in this specification, the terms "component", "module", "system", etc. are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program and / or a computer. By way of illustration, both an application running on a terminal device and a terminal device can be a component. One or more components can reside in a process and / or an execution thread, and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, through local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems via signals).

[0059] First, a brief introduction to the relevant technologies of this application is given to facilitate understanding by those skilled in the art.

[0060] like Figure 1As shown, multiple component carrier signals are received from the same antenna, processed by the RF filter and low-noise amplifier, and transmitted to the Radio Frequency Integrated Circuit (RFIC). Inside the RFIC, they are divided into two paths (signal A and signal B) by a power divider, and then each carrier signal is demodulated.

[0061] like Figure 2 and Figure 3 As shown, there may be no carrier signal splitting function inside the RFIC. In this case, the RF front end needs to distribute the power of the carrier signal.

[0062] One of the related technologies provides a power divider, such as Figure 4 As shown, switches are connected in series at output terminals 1 and 2 of the power divider, and switches are connected in parallel at the quarter-wavelength line. One end of the two parallel switches is connected to the input terminal, and the other end is connected to an isolation resistor. The first end of one of the series switches is connected to one end of the quarter-wavelength line, and the other end is connected to the other series switch, and is grounded through a switch. When both the series switches are on and the parallel switches are off, the circuit operates in power splitting mode, with the signal input from the input terminal passing through the quarter-wavelength line and the series switches to output terminals 1 and 2, respectively. When both the series switch and the parallel switch are on in one path, and both the series switch and the parallel switch are off in the other path, the circuit operates in single-pass mode, with the signal input from the input terminal passing through the active path to the corresponding output port. Figure 4 The power divider shown connects the output switch in series with the power divider device. In single-pass mode, the signal is subjected to a larger impedance, resulting in a larger insertion loss than a power divider with only power division function, thereby affecting the gain of the overall circuit.

[0063] Power splitter mode means the power splitter evenly distributes the input RF signal to each output port. This mode is often used in scenarios where the input signal needs to be distributed to multiple receivers or antennas, such as distributed antenna systems and wireless communication systems. Single-pass mode means the power splitter only allows signals to be transmitted in one direction within a specific frequency range, while allowing signals to be transmitted in multiple directions within other frequency ranges. Single-pass mode is typically used in applications within specific frequency bands, such as filters and RF front-ends.

[0064] The second related technology provides a circuit structure, such as Figure 5As shown, this circuit also adds switches to each power divider path to control the connection to the output terminal, isolation resistor, or open-circuit branch. When switches S5 and S6 are off and switches S1, S2, S3, and S4 are on, the circuit is equivalent to a power divider. When switches S3, S4, S2, and S5 are off and switches S1 and S6 are on, 22 and 27 are connected in series to form a λ / 2 open-circuit branch, and the signal flows from input port 10 to output port 14. When switches S3, S4, S1, and S6 are off and switches S2 and S5 are on, 12 and 17 are connected in series to form a λ / 2 open-circuit branch, and the signal flows from input port 10 to output port 24. Figure 5 The circuit shown also connects the switch and the power divider in series. In the single-pass mode, the insertion loss is large. At the same time, in the single-pass mode, the non-working path is connected to the wavelength / 2 branch, which is equivalent to an open circuit. However, these two branches occupy a large area of ​​the overall circuit layout.

[0065] To overcome the defects and shortcomings of the related art, the present invention provides a power splitter. Figure 6 , Figure 6 A schematic diagram of the circuit structure of a power divider provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the power divider includes a first power molecule section, a second power molecule section, and an isolation resistor; any one of the first and second power molecule sections A includes a first switching device, a second switching device, and a quarter-wavelength line. The first end of the first switching device is connected to the input end of the power molecule section A, and the second end of the first switching device is connected to the output end of the power molecule section A. The first end of the quarter-wavelength line is connected to the input end of the power molecule section A, the second end of the quarter-wavelength line is connected to the first end of the second switching device, and the second end of the second switching device is connected to the output end of the power molecule section A. The input end of the first and second power molecule sections are respectively connected to the input port of the power divider; the output end of the first power molecule section is connected to the first output port of the power divider; and the output end of the second power molecule section is connected to the second output port of the power divider. The second end of the quarter-wavelength line in the first power molecule section is connected to the second end of the quarter-wavelength line in the second power molecule section via the isolation resistor.

[0066] Among them, the quarter-wavelength line is an element for realizing impedance transformation and impedance matching. The quarter-wavelength line will exhibit different characteristics in different frequencies and circuits, mainly depending on the operating frequency, the characteristics of the surrounding medium (for example, dielectric constant, etc.), and the connected circuit. Exemplarily, the quarter-wavelength line in the embodiment of the present application can also be replaced by a combination of capacitors and inductors. Exemplarily, the embodiment of the present application can be wound out with a quarter-wavelength line in the first work molecule part and a quarter-wavelength line in the second work molecule part in the same area of ​​the circuit layout.

[0067] For example, Figure 7As shown, when the first switching device in the first power subsection is off and the second switching device is on, and when the first switching device in the second power subsection is off and the second switching device is on, the signal input from the input port is split by the quarter-wavelength line in the first power subsection, the second switching device, the quarter-wavelength line in the second power subsection, and the second switching device, and then transmitted to the first output port and the second output port, respectively. At this time, the power splitter operates in power splitting mode, and the signal input from the input port is transmitted along the path indicated by the dotted arrow.

[0068] In this implementation, the first switching device is connected in parallel with the quarter-wavelength line and the second switching device. In the power splitting mode, the insertion loss is substantially unaffected.

[0069] For example, Figure 8 As shown, when the first and second switching devices in the first power sub-section are on and the first and second switching devices in the second power sub-section are off, the signal input from the input port is transmitted to the first output port via the first switching device in the first power sub-section. In this case, the power divider operates in single-pass mode, and the signal input from the input port is transmitted along the path indicated by the dotted arrow.

[0070] In this implementation, when the switching device in the first power sub-section is turned on and the switching device in the second power sub-section is turned off, the signal input from the input port is transmitted to the first output port through the first switching device in the first power sub-section without passing through power splitters such as the quarter-wavelength line and the output switch. The signal experiences less impedance, so in single-pass mode, the insertion loss of the signal can be reduced.

[0071] For example, Figure 9 As shown, when the first and second switching devices in the first power sub-section are off and the first and second switching devices in the second power sub-section are on, the signal input from the input port is transmitted to the second output port via the first switching device in the second power sub-section. In this case, the power divider operates in single-pass mode, and the signal input from the input port is transmitted along the path indicated by the dotted arrow.

[0072] In this implementation, when the switching device in the first power sub-section is turned off and the switching device in the second power sub-section is turned on, the signal input from the input port is transmitted to the second output port through the first switching device in the second power sub-section without passing through power splitters such as the quarter-wavelength line and the output switch. The signal experiences less impedance, so in single-pass mode, the insertion loss of the signal can be reduced.

[0073] For example, Figure 10As shown, the first and second work molecule sections also include inductors. The first end of the inductor in the first work molecule section is connected to the input end of the first work molecule section, and the second end of the inductor in the first work molecule section is connected to the output end of the first work molecule section. The first end of the inductor in the second work molecule section is connected to the input end of the second work molecule section, and the second end of the inductor in the second work molecule section is connected to the output end of the second work molecule section. That is, the inductor in any work molecule section is connected in parallel with the first switching device and the power divider device.

[0074] For example, Figure 11 As shown, when the first switching device and the second switching device in the first power molecular section are turned on and the first switching device and the second switching device in the second power molecular section are turned off, the inductor in the second power molecular section is connected in parallel with the first switching device and the second switching device in the second power molecular section, and the switching device in the second power molecular section is equivalent to a capacitor with a certain capacitance, that is, the equivalent capacitor in the second power molecular section is connected in parallel with the inductor, and LC resonance (referring to a resonant circuit composed of inductance (inductance, usually represented by L) and capacitance (capacitance, usually represented by C)) is realized in the second power molecular section. When the signal attempts to be transmitted through the second power molecular section, the more impedance it experiences, the more attenuation it will experience. Therefore, through the design of the inductor, the isolation between the first output port and the second output port can be increased.

[0075] For example, Figure 12 As shown, when the first switching device and the second switching device in the first power molecular section are turned off and the first switching device and the second switching device in the second power molecular section are turned on, the inductor in the first power molecular section is connected in parallel with the first switching device and the second switching device in the first power molecular section, and the switching device in the first power molecular section is equivalent to a capacitor with a certain capacitance, that is, the equivalent capacitor in the first power molecular section is connected in parallel with the inductor, and LC resonance is realized in the first power molecular section. When the signal attempts to be transmitted through the first power molecular section, the more impedance it experiences, the more attenuation it will experience. Therefore, through the design of the inductor, the isolation between the first output port and the second output port can be increased.

[0076] The inductor may be a surface mounted device (SMD) inductor.

[0077] For example, the inductance of the inductor in the first power subunit is equal to the inductance of the inductor in the second power subunit. It should be noted that SMD inductors typically have certain process errors, which may cause the actual inductance of the SMD inductor to deviate from the set inductance. Within the allowable process error range, even if there is a slight deviation between the inductance of the inductor in the first power subunit and the inductor in the second power subunit, they can still be considered equal. The inductance deviation caused by process error can be determined based on actual conditions, for example, it can be [1 nanohenry (nH), 5nH].

[0078] In this implementation, when the inductance of the inductor in the first power subunit is equal to the inductance of the inductor in the second power subunit, in single-pass mode, the signal goes to any output port, and the isolation between it and the other output port is equivalent.

[0079] Exemplarily, the inductance value of the inductor is related to the frequency band of the input signal at the input port. Specifically, it can be a value or a value range corresponding to the frequency band of the input signal at the input port, such as a value range of inductance value corresponding to medium and high frequencies, and a value range corresponding to low frequencies. Specifically, when the signal frequency band range is [1G, 2G], the corresponding inductance value range is [48nH, 80nH]; when the signal frequency band range is [2G, 3G], the corresponding inductance value range is [31nH, 48nH]; when the signal frequency band range is [3G, 4G], the corresponding inductance value range is [17.5nH, 31nH]; when the signal frequency band range is [4G, 5G], the corresponding inductance value range is [11.2nH, 17.5nH]; when the signal frequency band is less than 1G, the corresponding inductance value range is above 80nH. Based on the correlation between the inductance value of the inductor and the frequency band of the input signal at the input port, the inductance values ​​of the inductors in the first power molecular section and the second power molecular section can be set according to the frequency band range of the input signal, so that in the single-pass mode, the inductor in the second power molecular section and the first switching device and the second switching device in the second power molecular section have a first LC resonant frequency point, or the inductor in the first power molecular section and the first switching device and the second switching device in the first power molecular section have a second LC resonant frequency point, and the first LC resonant frequency point and the second LC resonant frequency point fall within the frequency band range of the input signal at the input port, thereby effectively improving the isolation between the first output port and the second output port.

[0080] Exemplarily, the first resonant frequency is related to the inductance L of the inductor and the capacitance C of the equivalent capacitor in the second power subunit. By setting the inductance L and the capacitance C, resonance can be generated between the parallel equivalent capacitor and the inductor, and the resonant frequency can be calculated using L and C. When the type of switching device (e.g., a complementary metal-oxide-semiconductor switch (CMOS switch), a T-type switch, etc.) is determined, the capacitance C of the equivalent capacitor can also be basically determined. Therefore, an inductance L corresponding to the capacitance C can be set for the inductor in the second power subunit to cause resonance between the inductor and the equivalent capacitor. Exemplarily, when there are different combinations of the first and second switching devices in the second power subunit, different inductances are set for the inductor in the second power subunit based on the frequency band of the input signal and different switch combinations.

[0081] Exemplarily, the second resonant frequency point is related to the inductance value L of the inductor and the capacitance value C of the equivalent capacitor in the first power subunit. By setting the inductance value L and the capacitance value C, resonance can be generated between the parallel equivalent capacitor and the inductor, and the resonant frequency point can be calculated by L and C. When the type of the switching device (such as a CMOS switch, a T-type switch, etc.) is determined, the capacitance value C of the equivalent capacitor can also be basically determined. Then, the inductance value L corresponding to the capacitance value C can be set for the inductor in the first power subunit to cause the inductor and the equivalent capacitor to resonate. Exemplarily, when there are different combinations of the first switching device and the second switching device in the first power subunit, different inductance values ​​are set for the inductor in the first power subunit in combination with the frequency band range of the input signal and different switch combinations.

[0082] In this implementation, in single-pass mode, the equivalent capacitor of the non-operating path is connected in parallel with the inductor. A resonant frequency exists between the equivalent capacitor and the inductor, maximizing the isolation between the first and second output ports. Therefore, by adjusting the inductor's value so that this resonant frequency falls within the input signal's frequency band, the isolation between the two output ports can be increased.

[0083] For example, Figure 13 As shown, the second switching device can be a T-type switch, including a first switch, a second switch, and a third switch. The first end of the first switch serves as the first end of the second switching device, the second end of the first switch is connected to the first end of the second switch, and the second end of the second switch serves as the second end of the second switching device. The first end of the third switch is connected to the second end of the first switch and the first end of the second switch, and the second end of the third switch is grounded. When the first and second switches are on and the third switch is off, the second switching device is in the on state. When the first and second switches are off and the third switch is on, the second switching device is in the off state.

[0084] In this implementation, the third switch in the second switching device is grounded. In the single-pass mode, the third switch is turned on, the transmission path is grounded, and the signal attenuation is increased, which can improve the isolation between the non-working path and the working path (i.e., the first output port and the second output port).

[0085] This application is for Figure 13 The circuit structure shown and the circuit structure provided by one of the related technologies are simulated, see Figure 14A and Figure 14B , Figure 14A This is the simulation result of the circuit structure provided by one of the related technologies in the power division mode. Figure 14B In the power split mode, this application Figure 13 The simulation results of the circuit structure provided. Among them, dB(S(1,3)) represents the insertion loss from the input signal to any output port, dB(S(1,2)) represents the isolation between the input signal and any output port, and dB(S(2,3)) represents the isolation between the two output ports. It should be noted that Figure 14A and Figure 14B The dB(S(1,3)) curve in the figure basically coincides with the dB(S(1,2)) curve. It can be seen that when the frequency of the resonance point m1 is 3.750 GHz, the circuit structure provided by one of the related technologies is: dB(S(1,3))=-4.076, dB(S(1,2))=-4.100, dB(S(2,3))=-14.808; this application Figure 13 The circuit structure provided (power divider): dB(S(1,3))=-4.026, dB(S(1,2))=-4.034, dB(S(2,3))=-14.412. In the power divider mode, this application Figure 13 The provided circuit structure has a slightly lower insertion loss than the circuit structure provided in one of the related technologies, but the isolation is basically the same.

[0086] See Figure 15A and Figure 15B , Figure 15A This is the simulation result of the circuit structure provided by one of the related technologies in single-pass mode. Figure 15B In single-pass mode, this application Figure 13The simulation results of the circuit structure provided. Among them, dB(S(1,3)) and dB(S(7,6)) represent the insertion loss of the signal input from the input port to the output port corresponding to the working path, dB(S(1,2)) and dB(S(7,8)) represent the isolation between the signal input from the input port and the signal of the output port corresponding to the non-working path, and dB(S(2,3)) and dB(S(8,6)) represent the isolation between the two output ports. It can be seen that when the frequency of the resonant point m1 is 3.750GHz, the circuit structure provided by one of the related technologies: dB(S(1,3))=-0.649, dB(S(1,2))=-43.380, dB(S(2,3))=-44.295; when the frequency of the resonant point m2 is 3.750GHz, the present application Figure 13 The circuit structure provided is: dB(S(7,6))=-0.291, dB(S(7,8))=-45.670, dB(S(8,6))=-55.366. In single-pass mode, this application Figure 13 The provided circuit structure has improvements in insertion loss and isolation compared to the circuit structure provided by one of the related technologies, and the overall circuit benefit is improved.

[0087] It can be seen that the power divider provided in the embodiment of the present application connects the first switching device in parallel with the power dividing device, which can reduce the insertion loss without affecting the performance of the power dividing mode, especially in the single-pass mode, the insertion loss is significantly improved.

[0088] The embodiment of the present application also provides a wireless communication device, which includes a receiving antenna, a radio frequency filter, a low noise amplifier, a radio frequency integrated circuit RFIC, and the above Figures 6 to 13 The power divider in any embodiment. The wireless communication device may be a radio frequency subsystem of a wireless communication device, for details, see Figure 2 The power divider in the wireless communication device can be used in a wireless communication radio frequency front end.

[0089] Specifically, a receiving antenna for receiving signals;

[0090] A radio frequency filter is used to filter the signal received by the receiving antenna and input the filtered signal into a low-noise amplifier;

[0091] A low noise amplifier is used to amplify the input signal and input the amplified signal into the power divider;

[0092] A power divider, configured to distribute an input signal to a first output port and a second output port, and output a first signal to the RFIC from the first output port and output a second signal to the RFIC from the second output port;

[0093] The RFIC is configured to demodulate the first signal and the second signal.

[0094] The present application also provides an electronic device, including: Figure 2 The wireless communication device shown includes the above-mentioned Figures 6 to 13 The power splitter in any embodiment. The electronic device may be a terminal device in communication scenarios such as non-continuous carrier aggregation and new radio dual link (E-UTRA-NR Dual Connective, ENDC).

[0095] The terms "first," "second," and "third" in the embodiments and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. In addition, the terms "including" and "having," and any variations thereof, are intended to indicate non-exclusive inclusion, for example, inclusion of a series of steps or units. A method, system, product, or apparatus is not necessarily limited to those steps or units listed literally, but may include other steps or units not listed literally or inherent to such process, method, product, or apparatus.

[0096] It should be understood that in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0097] It should be understood that in this application, the size of the sequence numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The term "coupling" mentioned in this application is used to express the intercommunication or interaction between different components, which can include direct connection or indirect connection through other components.

[0098] The above description is merely a specific embodiment of the present application, but the scope of protection of the present 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 the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A power divider, characterized in that: It includes a first work molecular unit, a second work molecular unit and an isolation resistor; any one work molecular unit A of the first work molecular unit and the second work molecular unit includes a first switching device, a second switching device and a quarter-wavelength line; The first end of the first switching device is connected to the input end of the power subunit A, and the second end of the first switching device is connected to the output end of the power subunit A; The first end of the quarter-wavelength line is connected to the input end of the power subunit A, and the second end of the quarter-wavelength line is connected to the first end of the second switching device; the second end of the second switching device is connected to the output end of the power subunit A; the first switching device and the second switching device are connected in parallel; The input end of the first power molecule unit and the input end of the second power molecule unit are respectively connected to the input port of the power divider; the output end of the first power molecule unit is connected to the first output port of the power divider; the output end of the second power molecule unit is connected to the second output port of the power divider; The second end of the quarter-wavelength line in the first power molecular section is connected to the second end of the quarter-wavelength line in the second power molecular section through the isolation resistor.

2. The power divider according to claim 1, characterized in that The work molecule part A also includes an inductor; The first end of the inductor is connected to the input end of the power subunit A, and the second end of the inductor is connected to the output end of the power subunit A.

3. The power divider according to claim 1 or 2, characterized in that: The second switching device includes a first switch, a second switch and a third switch; The first end of the first switch is the first end of the second switching device, the second end of the first switch is connected to the first end of the second switch, and the second end of the second switch is the second end of the second switching device; the first end of the third switch is connected to the second end of the first switch and the first end of the second switch, and the second end of the third switch is grounded.

4. The power divider according to any one of claims 1 to 3, characterized in that: When the first switching device in the first power subunit is turned off and the second switching device is turned on, and when the first switching device in the second power subunit is turned off and the second switching device is turned on, the signal input from the input port is power-divided by the quarter-wavelength line and the second switching device in the first power subunit and the quarter-wavelength line and the second switching device in the second power subunit, and then transmitted to the first output port and the second output port respectively.

5. The power divider according to any one of claims 1 to 3, characterized in that: When the first switching device and the second switching device in the first power subunit are turned on and the first switching device and the second switching device in the second power subunit are turned off, the signal input from the input port is transmitted to the first output port through the first switching device in the first power subunit.

6. The power divider according to any one of claims 1 to 3, characterized in that: When the first and second switching devices in the first power subunit are turned off and the first and second switching devices in the second power subunit are turned on, the signal input from the input port is transmitted to the second output port via the first switching device in the second power subunit.

7. The power divider according to any one of claims 3, 4-6, characterized in that: When the first switch and the second switch are turned on and the third switch is turned off, the second switch device is in the on state; when the first switch and the second switch are turned off and the third switch is turned on, the second switch device is in the off state.

8. The power divider according to any one of claims 2 to 7, characterized in that: The inductance value of the inductor in the first work molecule section is equal to the inductance value of the inductor in the second work molecule section.

9. The power divider according to any one of claims 2 to 8, characterized in that: The inductance of the inductor is related to the frequency band of the input signal at the input port.

10. The power divider according to claim 9, characterized in that: When the first switching device and the second switching device in the first power molecular unit are turned on and the first switching device and the second switching device in the second power molecular unit are turned off, the inductor in the second power molecular unit is connected in parallel with the first switching device and the second switching device in the second power molecular unit, and a first LC resonant frequency point exists between the inductor in the second power molecular unit and the first switching device and the second switching device in the second power molecular unit, and the first LC resonant frequency point falls within the frequency band of the input signal at the input port.

11. The power divider according to claim 9, characterized in that: When the first switching device and the second switching device in the first power molecular unit are turned off and the first switching device and the second switching device in the second power molecular unit are turned on, the inductor in the first power molecular unit is connected in parallel with the first switching device and the second switching device in the first power molecular unit, and a second LC resonant frequency point exists between the inductor in the first power molecular unit and the first switching device and the second switching device in the first power molecular unit, and the second LC resonant frequency point falls within the frequency band range of the input signal at the input port.

12. A wireless communication device, characterized in that: The invention comprises a receiving antenna, a radio frequency filter, a low noise amplifier, a radio frequency integrated circuit RFIC, and a power divider as claimed in any one of claims 1 to 11.

13. The wireless communication device according to claim 12, wherein: The receiving antenna is used to receive signals; The radio frequency filter is used to filter the signal received by the receiving antenna and input the filtered signal into the low noise amplifier; The low noise amplifier is used to amplify the input signal and input the amplified signal into the power divider; The power divider is configured to distribute an input signal to the first output port and the second output port, and output a first signal to the RFIC via the first output port and output a second signal to the RFIC via the second output port; The RFIC is used to demodulate the first signal and the second signal.

14. An electronic device, characterized in that: Comprising the wireless communication device according to claim 12 or 13.

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