Antenna assembly and electronic equipment

Abstract

The invention relates to an antenna assembly and electronic equipment. The antenna assembly includes: an antenna; a first switching circuit; the power amplifier outputs radio frequency signals of different frequency bands to the antenna through the first switching circuit; the first matching circuit is electrically connected between the first end of the first switching circuit and the antenna, and the first matching circuit comprises a first passive device; the second matching circuit is electrically connected between the second end of the first switching circuit and the output end of the power amplifier, and the second matching circuit comprises a second passive device; wherein the parameter of the first passive device and the parameter of the second passive device are matched with the target frequency band of the radio frequency signal, and the parameter of the first passive device is used for turning the power of the radio frequency signal of the target frequency band to the center of a corresponding equal output power curve; the parameters of the second passive device are used for enabling the center of the equal output power curve to turn to a matching point of the Smith chart.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and in particular, to an antenna assembly and an electronic device. BACKGROUND

[0002] In the antenna assembly, a power amplifier (PA) outputs a power-amplified radio frequency signal to a switch circuit, and the switch circuit radiates the radio frequency signal through a selected antenna. However, due to the influence of the power amplifier, the power of the radio frequency signal is eccentric, which affects the performance of the antenna assembly. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides an antenna assembly and an electronic device.

[0004] According to a first aspect of the present disclosure, an antenna assembly is provided, comprising:

[0005] an antenna;

[0006] a first switch circuit;

[0007] a power amplifier, configured to output radio frequency signals of different frequency bands to the antenna through the first switch circuit;

[0008] a first matching circuit, electrically connected between a first end of the first switch circuit and the antenna, the first matching circuit comprising a first passive device;

[0009] a second matching circuit, electrically connected between a second end of the first switch circuit and an output end of the power amplifier, the second matching circuit comprising a second passive device;

[0010] wherein parameters of the first passive device and parameters of the second passive device are matched with a target frequency band of the radio frequency signals, and the parameters of the first passive device are used to make the power of the radio frequency signals of the target frequency band turn to the center of a corresponding equal output power curve, and the parameters of the second passive device are used to make the center of the equal output power curve turn to a matching point of a Smith chart.

[0011] In some embodiments of the present disclosure, the first matching circuit comprises:

[0012] a first sub-matching circuit, electrically connected between the antenna and the first end of the first switch circuit, and the parameters of the first passive device in the first sub-matching circuit are used to make the power of the radio frequency signals of the target frequency band turn to the center of the corresponding equal output power curve.

[0013] In some embodiments of this disclosure, the first sub-matching circuit includes:

[0014] A first matching unit, wherein a first end of the first matching unit is electrically connected to the antenna, and a second end of the first matching unit is electrically connected to the first end of the first switching circuit;

[0015] The second switching circuit has its first terminal electrically connected to both the second terminal of the first matching unit and the first terminal of the first switching circuit.

[0016] The second matching unit is electrically connected between the second terminal of the second switching circuit and the ground terminal;

[0017] Wherein, the parameters of each of the first passive devices in the first matching unit and the parameters of some of the first passive devices in the second matching unit are used to direct the power of the radio frequency signal of a portion of the target frequency band to the center of the corresponding equal output power curve, and the parameters of each of the first passive devices in the first matching unit and the parameters of another portion of the first passive devices in the second matching unit are used to direct the power of the radio frequency signal of another portion of the target frequency band to the center of the corresponding equal output power curve.

[0018] In some embodiments of this disclosure, the target frequency band includes the B1 and B3 bands in the mid-to-high frequency band. The parameters of each of the first passive devices in the first matching unit and the parameters of some of the first passive devices in the second matching unit are used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the equal admittance circle and then counterclockwise along the equal impedance circle on the Smith chart to turn towards the center of the corresponding equal output power curve. The parameters of each of the first passive devices in the first matching unit and the parameters of another part of the first passive devices in the second matching unit are used to make the power of the radio frequency signal in the B3 band rotate clockwise along the equal admittance circle, then counterclockwise along the equal admittance circle, and then counterclockwise along the equal impedance circle on the Smith chart to turn towards the center of the corresponding equal output power curve.

[0019] In some embodiments of this disclosure, the first matching unit includes:

[0020] A first capacitor, the first end of which is electrically connected to the antenna, and the second end of which is electrically connected to the first end of both the first and second switching circuits. The capacitance of the first capacitor is used to make the power of the radio frequency signals in the B1 and B3 bands rotate counterclockwise along the equal impedance circle on the Smith chart to the center of the corresponding equal output power curve.

[0021] The first inductor has its first end electrically connected to the second end of the first capacitor, the first end of the first switching circuit, and the first end of the second switching circuit. The second end of the first inductor is used to be electrically connected to the ground terminal. The inductance value of the first inductor is used to make the power of the radio frequency signals in the B1 and B3 bands rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0022] In some embodiments of this disclosure, the capacitance of the first capacitor and the inductance of the first inductor are matched with both the B1 and B3 frequency bands; the capacitance of the first capacitor is 30pF-40pF, and the inductance of the first inductor is 5nH-6nH.

[0023] In some embodiments of this disclosure, the second matching unit includes:

[0024] The second inductor is electrically connected between the first sub-terminal in the second terminal of the second switching circuit and the ground terminal. The inductance value of the second inductor is used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0025] The third inductor is electrically connected between the second sub-terminal in the second terminal of the second switching circuit and the ground terminal. The inductance value of the third inductor is used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0026] The second capacitor is electrically connected between the fourth sub-terminal of the second terminal of the second switching circuit and the ground terminal. The capacitance of the second capacitor is used to make the power of the radio frequency signal in the B3 band rotate clockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0027] In some embodiments of this disclosure, the inductance values ​​of the second inductor and the third inductor are matched with the B1 frequency band, and the capacitance value of the second capacitor is matched with the B3 frequency band; the inductance value of the second inductor is 30nH-40nH, the inductance value of the third inductor is 10nH-20nH, and the capacitance value of the second capacitor is 0.2pF-0.4pF.

[0028] In some embodiments of this disclosure, the second matching unit further includes:

[0029] The fourth inductor is electrically connected between the third sub-terminal of the second terminal of the second switching circuit and the ground terminal. The inductance value of the fourth inductor is used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0030] In some embodiments of this disclosure, the first sub-matching circuit further includes:

[0031] The third matching unit is electrically connected between the second end of the first matching unit and the first end of the first switching circuit. The parameters of the third passive device in the third matching unit are matched with some frequency bands other than the target frequency band.

[0032] In some embodiments of this disclosure, the first matching circuit further includes:

[0033] The second sub-matching circuit is electrically connected between the second terminal of the first sub-matching circuit and the first terminal of the first switching circuit.

[0034] The end of the second sub-matching circuit that is electrically connected to the first sub-matching circuit constitutes the signal source of the radio frequency signal.

[0035] In some embodiments of this disclosure, the second matching circuit includes:

[0036] The fourth matching unit is electrically connected between the first sub-terminal of the output terminal of the power amplifier and the first sub-terminal of the second terminal of the first switching circuit;

[0037] The fifth matching unit is electrically connected between the second sub-terminal of the output terminal of the power amplifier and the second sub-terminal of the second terminal of the first switching circuit;

[0038] The parameters of the second passive device in the fourth matching unit and the fifth matching unit are respectively used to turn the center of the equal output power curves of different target frequency bands toward the matching point.

[0039] In some embodiments of this disclosure, the target frequency band includes the B1 and B3 bands in the mid-to-high frequency range. The parameters of the second passive device in the fourth matching unit are used to cause the center of the equal output power curve of the B1 band to rotate counterclockwise along the equal impedance circle, then clockwise along the equal impedance circle, and then counterclockwise along the equal admittance circle on the Smith chart to turn towards the matching point. The parameters of the second passive device in the fifth matching unit are used to cause the center of the equal output power curve of the B3 band to rotate counterclockwise along the equal impedance circle, then clockwise along the equal impedance circle, and then counterclockwise along the equal admittance circle on the Smith chart to turn towards the matching point.

[0040] In some embodiments of this disclosure, the fourth matching unit includes:

[0041] The fifth inductor has its first end electrically connected to the first sub-terminal of the second end of the first switching circuit, and its second end electrically connected to the ground terminal. The inductance value of the fifth inductor is used to make the center of the equal output power curve of the B1 frequency band rotate counterclockwise along the equal admittance circle on the Smith chart to the matching point.

[0042] The sixth inductor, the first end of which is electrically connected to the first sub-terminal of the second terminal of the first switching circuit and the first end of the fifth inductor, the inductance value of the sixth inductor is used to make the center of the equal output power curve of the B1 band rotate clockwise along the equal impedance circle on the Smith chart to the matching point.

[0043] The third capacitor has its first terminal electrically connected to the second terminal of the sixth inductor, and its second terminal electrically connected to the first sub-terminal of the output terminal of the power amplifier. The capacitance of the third capacitor is used to rotate the center of the equal output power curve of the B1 band counterclockwise on the Smith chart along the equal impedance circle to the matching point.

[0044] In some embodiments of this disclosure, the inductance values ​​of the fifth inductor, the sixth inductor, and the third capacitor are matched with the B1 frequency band; the inductance value of the fifth inductor is 3nH-4nH, the inductance value of the sixth inductor is 0.2nH-0.4nH, and the capacitance value of the third capacitor is 0.1pF-0.3pF.

[0045] In some embodiments of this disclosure, the fifth matching unit includes:

[0046] The seventh inductor has its first end electrically connected to the second sub-terminal of the second terminal of the first switching circuit, and its second end electrically connected to the ground terminal. The inductance value of the seventh inductor is used to make the center of the equal output power curve of the B3 frequency band rotate counterclockwise along the equal admittance circle on the Smith chart to the matching point.

[0047] The eighth inductor, the first end of which is electrically connected to the second sub-terminal of the second terminal of the first switching circuit and the first end of the seventh inductor, the inductance value of the eighth inductor is used to make the center of the equal output power curve of the B3 frequency band rotate clockwise on the Smith chart along the equal impedance circle to turn towards the matching point.

[0048] A fourth capacitor, the first end of which is electrically connected to the second end of the eighth inductor, and the second end of which is electrically connected to the second sub-terminal of the output terminal of the power amplifier, wherein the capacitance value of the fourth capacitor is used to rotate the center of the equal output power curve of the B3 band counterclockwise on the Smith chart along the equal impedance circle to the matching point.

[0049] In some embodiments of this disclosure, the inductance values ​​of the seventh inductor, the eighth inductor, and the fourth capacitor are matched with the B3 frequency band; the inductance value of the seventh inductor is 9nH-10nH, the inductance value of the eighth inductor is 0.5nH-2nH, and the capacitance value of the fourth capacitor is 0.3pF-1pF.

[0050] According to a second aspect of this disclosure, an electronic device is provided, the electronic device including the antenna assembly as described above.

[0051] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0052] The antenna assembly includes an antenna, a first switching circuit, a power amplifier, a first matching circuit, and a second matching circuit. The first matching circuit is electrically connected between the first switching circuit and the antenna, and the second matching circuit is electrically connected between the first switching circuit and the power amplifier. Under the influence of the power amplifier, the center of the iso-output power curve corresponding to the RF signal of the target frequency band output to the antenna through the first switching circuit shifts to the matching point on the Smith chart. By setting the parameters of the first passive device, the power of the RF signal of the target frequency band can be shifted to the center of the corresponding iso-output power curve, thereby increasing the power of the RF signal of the target frequency band. By setting the parameters of the second passive device, the center of the iso-output power curve can be shifted to the matching point on the Smith chart, reducing the impact of RF power offset. By combining the parameters of the first and second passive devices with the target frequency band of the RF signal, the power of the RF signal of the target frequency band can reach the expected power from two aspects, thereby improving the performance of the antenna assembly.

[0053] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0054] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0055] Figure 1-1 This is a schematic diagram of the structure of an antenna assembly;

[0056] Figure 1-2 This is a schematic diagram of a Smith chart;

[0057] Figure 1-3 This is a schematic diagram of another type of antenna assembly;

[0058] Figure 1-4 This is a schematic diagram of another Smith chart;

[0059] Figure 2 This is a schematic diagram of the structure of an antenna assembly provided in an exemplary embodiment of this disclosure;

[0060] Figure 3 This is a schematic diagram of the structure of the first matching circuit provided in an exemplary embodiment of the present disclosure;

[0061] Figure 4 This is a schematic diagram of the structure of the first sub-matching circuit provided in an exemplary embodiment of this disclosure;

[0062] Figure 5 This is a schematic diagram of the structure of the second matching circuit provided in an exemplary embodiment of the present disclosure;

[0063] Figure 6 This is a schematic diagram of the structure of the second sub-matching circuit provided in an exemplary embodiment of this disclosure;

[0064] Figure 7 This is a schematic diagram of the structure of an antenna assembly provided in another exemplary embodiment of this disclosure;

[0065] Figure 8 This is a schematic diagram of a Smith chart provided in an exemplary embodiment of this disclosure;

[0066] Figure 9 This is a block diagram of an electronic device provided in an exemplary embodiment of the present disclosure.

[0067] In the picture:

[0068] 10 - Antenna; 20 - First switching circuit; 30 - Power amplifier; 40 - First matching circuit; 41 - First sub-matching circuit; 41a - First matching unit; 41b - Second matching unit; 41c - Second switching circuit; 41d - Third matching unit; 42 - Second sub-matching circuit; 50 - Second matching circuit; 51a - Fourth matching unit; 51b - Fifth matching unit; 60 - Signal source; 400 - Electronic device; 402 - Processing component; 404 - Memory; 406 - Power supply component; 408 - Multimedia component; 410 - Audio component; 412 - Input / output interface; 414 - Sensor group Components; 416 - Communication component; 420 - Processor; C1 - First capacitor; C2 - Second capacitor; C3 - Third capacitor; C4 - Fourth capacitor; C5 - Fifth capacitor; C6 - Sixth capacitor; C7 - Seventh capacitor; C8 - Eighth capacitor; L1 - First inductor; L2 - Second inductor; L3 - Third inductor; L4 - Fourth inductor; L5 - Fifth inductor; L6 - Sixth inductor; L7 - Seventh inductor; L8 - Eighth inductor; L9 - Ninth inductor; L10 - Tenth inductor; L11 - Eleventh inductor; S1 - First switch; S2 - Second switch; S3 - Third switch; S4 - Fourth switch; GND - Ground terminal. Detailed Implementation

[0069] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0070] In the antenna assembly, the power amplifier outputs the amplified radio frequency signal to the switching circuit, which then uses the selected antenna to radiate the radio frequency signal. For example... Figure 1-1 and Figure 1-2 As shown, the antenna assembly includes an antenna 10, a first switching circuit 20, and a power amplifier 30. For a high-performance power amplifier 30, it can output different frequency bands of radio frequency (RF) signals (such as RF signals from various frequency bands in the mid-to-high frequency band MHB) to the first switching circuit 20 through a single path. After selecting the corresponding antenna 10, the first switching circuit 20 radiates the RF signal through the selected antenna 10. Because the path for transmitting RF signals by the power amplifier 30 has a convergence function, the center of the equal output power curve is located at the matching point on the Smith chart, and there is no problem of RF power eccentricity. Figure 1-3 and Figure 1-4As shown, for a low-performance power amplifier 30, it needs to output different frequency bands of radio frequency (RF) signals (such as RF signals in bands B1, B3, B40, and B41) to the first switching circuit 20 through multiple paths. After selecting the corresponding antenna 10, the first switching circuit 20 radiates the RF signal through the selected antenna 10. Since the path for transmitting RF signals by the power amplifier 30 does not have a convergence function, the center of the equal output power curve deviates from the matching point of the Smith chart, resulting in an eccentricity problem in the RF power. The values ​​in the equal output power curve represent power in dBm. Due to this eccentricity problem, the power of RF signals in some frequency bands is in the low-power region, affecting the performance of the antenna components.

[0071] Based on this, the present disclosure provides an antenna assembly that, by combining the parameters of the first passive device in the first matching circuit between the first switching circuit and the antenna, and the parameters of the second passive device in the second matching circuit between the first switching circuit and the power amplifier, with the target frequency band of the radio frequency signal, avoids the influence of radio frequency power eccentricity causing the power of the radio frequency signal in the target frequency band to be in the low power region, thereby improving the performance of the antenna assembly.

[0072] An exemplary embodiment of this disclosure provides an antenna assembly, such as Figure 2 As shown, the antenna assembly includes an antenna 10, a first switching circuit 20, a power amplifier 30, a first matching circuit 40, and a second matching circuit 50. The power amplifier 30 outputs radio frequency (RF) signals of different frequency bands to the antenna 10 through the first switching circuit 20. The first matching circuit 40 is electrically connected between the first terminal of the first switching circuit 20 and the antenna 10, and includes a first passive device. The second matching circuit 50 is electrically connected between the second terminal of the first switching circuit 20 and the output terminal of the power amplifier 30, and includes a second passive device. The parameters of the first and second passive devices are matched to the target frequency band of the RF signal. The parameters of the first passive device are used to steer the power of the RF signal in the target frequency band towards the center of the corresponding equal output power curve, and the parameters of the second passive device are used to shift the center of the equal output power curve towards the matching point on the Smith chart.

[0073] In this embodiment, the antenna assembly includes an antenna, a first switching circuit, a power amplifier, a first matching circuit, and a second matching circuit. The first matching circuit is electrically connected between the first switching circuit and the antenna, and the second matching circuit is electrically connected between the first switching circuit and the power amplifier. Under the influence of the power amplifier, the center of the iso-output power curve corresponding to the RF signal of the target frequency band output to the antenna through the first switching circuit shifts to the matching point of the Smith chart. By setting the parameters of the first passive device, the power of the RF signal of the target frequency band can be shifted to the center of the corresponding iso-output power curve, thereby increasing the power of the RF signal of the target frequency band. By setting the parameters of the second passive device, the center of the iso-output power curve can be shifted to the matching point of the Smith chart, reducing the impact of RF power offset. By combining the parameters of the first passive device and the second passive device with the target frequency band of the RF signal, the power of the RF signal of the target frequency band can reach the expected power from two aspects, thereby improving the performance of the antenna assembly.

[0074] For example, the power amplifier 30 can output radio frequency signals of different frequency bands to the antenna 10 through a single path via the first switching circuit 20, or it can output radio frequency signals of different frequency bands to the antenna 10 through multiple paths via the first switching circuit 20 respectively.

[0075] In one embodiment, such as Figure 3 As shown, the first matching circuit 40 includes a first sub-matching circuit 41. The first sub-matching circuit 41 is electrically connected between the antenna 10 and the first terminal of the first switching circuit 20. The parameters of the first passive device in the first sub-matching circuit 41 are used to direct the power of the radio frequency signal in the target frequency band to the center of the corresponding equal output power curve.

[0076] In this embodiment, since the first sub-matching circuit is located between the antenna and the first switching circuit, the first sub-matching circuit serves as the matching circuit for the antenna end, and the second matching circuit serves as the matching circuit for the radio frequency end. By matching the parameters of the passive components in the matching circuits at both the antenna end and the radio frequency end with the target frequency band of the radio frequency signal, the power of the radio frequency signal in the target frequency band can reach the expected power from two aspects, thereby improving the performance of the antenna assembly.

[0077] In one embodiment, such as Figure 4As shown, the first sub-matching circuit 41 includes a first matching unit 41a, a second matching unit 41b, and a second switching circuit 41c. The first terminal of the first matching unit 41a is electrically connected to the antenna 10, and the second terminal is electrically connected to the first terminal of the first switching circuit 20. The first terminal of the second switching circuit 41c is electrically connected to both the second terminal of the first matching unit 41a and the first terminal of the first switching circuit 20. The second matching unit 41d is electrically connected between the second terminal of the second switching circuit 41c and the ground terminal GND. The parameters of each first passive device in the first matching unit 41a and the parameters of some first passive devices in the second matching unit 41b are used to redirect the power of a portion of the target frequency band's radio frequency signal to the center of the corresponding equal output power curve. The parameters of each first passive device in the first matching unit 41a and the parameters of another portion of the first passive devices in the second matching unit 41b are used to redirect the power of another portion of the target frequency band's radio frequency signal to the center of the corresponding equal output power curve.

[0078] In this embodiment, since the first matching unit is electrically connected to the antenna, the devices in the first matching unit can influence the power of radio frequency signals in multiple frequency bands, causing the power of radio frequency signals in multiple target frequency bands to simultaneously rotate counterclockwise or clockwise towards the center of the corresponding equal output power curve. Since the second matching unit is electrically connected to the first matching unit through a second switching circuit, the second matching unit is used for tuning and influencing the power of radio frequency signals in multiple frequency bands, causing the power of radio frequency signals in multiple target frequency bands to rotate counterclockwise or clockwise towards the center of the corresponding equal output power curve. By matching the parameters of the first passive devices in the first and second matching units at the antenna end with the target frequency band of the radio frequency signal, the power of the radio frequency signal in the target frequency band can reach the expected power from the perspective of power rotation, thereby improving the performance of the antenna assembly.

[0079] In one embodiment, the target frequency band includes the B1 and B3 bands in the mid-to-high frequency band. The parameters of each of the first passive devices in the first matching unit 41a and the parameters of some of the first passive devices in the second matching unit 41b are used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the equal admittance circle and then counterclockwise along the equal impedance circle on the Smith chart to turn towards the center of the corresponding equal output power curve. The parameters of each of the first passive devices in the first matching unit 41a and the parameters of another part of the first passive devices in the second matching unit 41b are used to make the power of the radio frequency signal in the B3 band rotate clockwise along the equal admittance circle, then counterclockwise along the equal admittance circle, and then counterclockwise along the equal impedance circle on the Smith chart to turn towards the center of the corresponding equal output power curve.

[0080] In this embodiment, due to the RF power eccentricity, the power of the RF signals in bands B1 and B3 decreases significantly, greatly affecting the radiation of the RF signals. Since the power of the RF signals in bands B1 and B3 are positioned differently on the Smith chart, they need to be rotated in different ways to reach the center of the corresponding equal output power curves. By matching the parameters of the first passive device with those of bands B1 and B3, the power of the RF signals in bands B1 and B3 increases as they rotate within the equal output power curves, thereby improving the performance of the antenna assembly.

[0081] In one embodiment, the first matching unit 41a includes a first capacitor C1 and a first inductor L1. The first terminal of the first capacitor C1 is electrically connected to the antenna 10, and the second terminal is electrically connected to the first terminals of both the first switching circuit 20 and the second switching circuit 41c. The capacitance of the first capacitor C1 is used to cause the power of the radio frequency signals in the B1 and B3 bands to rotate counterclockwise along the equal impedance circle on the Smith chart to the center of the corresponding equal output power curve. The first terminal of the first inductor L1 is electrically connected to the second terminal of the first capacitor C1, the first terminal of the first switching circuit 20, and the first terminal of the second switching circuit 41c. The second terminal is used to be electrically connected to the ground terminal GND. The inductance of the first inductor L1 is used to cause the power of the radio frequency signals in the B1 and B3 bands to rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0082] In this embodiment, since capacitors and inductors affect the power of the radio frequency signal in the target frequency band, a first matching unit is constructed using a first capacitor and a first inductor. By adjusting the power of the radio frequency signals in the B1 and B3 frequency bands using a matching structure with a first capacitor in series and a first inductor in parallel, the power of radio frequency signals in multiple frequency bands can be adjusted simultaneously, thereby reducing the complexity of the antenna assembly structure.

[0083] In one embodiment, the capacitance of the first capacitor C1 and the inductance of the first inductor L1 are matched to both frequency bands B1 and B3. The capacitance of the first capacitor C1 is 30pF-40pF, and the inductance of the first inductor L1 is 5nH-6nH.

[0084] In this embodiment, since the capacitance and inductance of the first capacitor both affect the power of the radio frequency signals in bands B1 and B3, the capacitance and inductance are set to match both bands B1 and B3. By setting the capacitance of the first capacitor to 30pF-40pF and the inductance of the first inductor to 5nH-6nH, the capacitance and inductance can be matched with bands B1 and B3, causing the power of the radio frequency signals in bands B1 and B3 to converge, thereby improving the performance of the antenna assembly.

[0085] For example, the capacitance of the first capacitor C1 is 33pF and the inductance of the first inductor L1 is 5.8nH.

[0086] In one embodiment, the capacitance of the first capacitor C1 and the inductance of the first inductor L1 are used to make the power of the radio frequency signals in the B1 and B3 bands converge to the first target power range and the second target power range of the equal output power curve, respectively.

[0087] In this embodiment, by setting the capacitance of the first capacitor and the inductance of the first inductor, the power of the radio frequency signals in the B1 and B3 bands is made to converge to the first target power range and the second target power range of the equal output power curve, respectively. This avoids the power of the radio frequency signals in the B1 and B3 bands from being unable to converge due to the influence of the power amplifier, thereby improving the performance of the antenna assembly.

[0088] In one embodiment, the second matching unit 41d includes a second inductor L2, a third inductor L3, and a second capacitor C2. The second inductor L2 is electrically connected between a first sub-terminal of the second terminal of the second switching circuit 41c and the ground terminal GND. The inductance value of the second inductor L2 is used to cause the power of the B1 band RF signal to rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve. The third inductor L3 is electrically connected between a second sub-terminal of the second terminal of the second switching circuit 41c and the ground terminal GND. The inductance value of the third inductor L3 is used to cause the power of the B1 band RF signal to rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve. The second capacitor C2 is electrically connected between a fourth sub-terminal of the second terminal of the second switching circuit 41c and the ground terminal GND. The capacitance value of the second capacitor C2 is used to cause the power of the B3 band RF signal to rotate clockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0089] In this embodiment, since capacitors and inductors affect the power of the radio frequency signal in the target frequency band, a second matching unit is constructed using a second inductor, a third inductor, and a second capacitor for tuning. By incorporating the second and third inductors, the power of the radio frequency signal in the B1 band can be redirected counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve. By incorporating the second capacitor, the power of the radio frequency signal in the B3 band can be redirected clockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve. By adjusting the power of the radio frequency signals in the B1 and B3 bands using the matching structure of the second inductor, the power of the radio frequency signals in multiple bands can be adjusted separately, thereby improving the reliability of the antenna assembly.

[0090] In one embodiment, the inductance values ​​of the second inductor L2 and the third inductor L3 are matched to the B1 frequency band, and the capacitance value of the second capacitor C2 is matched to the B3 frequency band. The inductance value of the second inductor L2 is 30nH-40nH, the inductance value of the third inductor L3 is 10nH-20nH, and the capacitance value of the second capacitor C2 is 0.2pF-0.4pF.

[0091] In this embodiment, since the inductance values ​​of the second and third inductors affect the power of the radio frequency signal in the B1 band, their inductance values ​​are set to match the B1 band. Similarly, since the capacitance value of the second capacitor affects the power of the radio frequency signal in the B3 band, its capacitance value is set to match the B3 band. By setting the inductance value of the second inductor to 30nH-40nH, the inductance value of the third inductor to 10nH-20nH, and the capacitance value of the second capacitor to 0.2pF-0.4pF, the inductance values ​​of the second and third inductors and the capacitance value of the second capacitor can match the B1 and B3 bands, thus converging the power of the radio frequency signals in the B1 and B3 bands and preventing excessive increases that could affect the bandwidth of the radio frequency signal, thereby improving the performance of the antenna assembly.

[0092] For example, the inductance of the second inductor L2 is 39nH, the inductance of the third inductor L3 is 16nH, and the capacitance of the second capacitor C2 is 0.3pF.

[0093] In one embodiment, the inductance values ​​of the second inductor L2 and the third inductor L3 are used to converge the power of the radio frequency signal in the B1 band to the first target power range of the equal output power curve, and the capacitance value of the second capacitor C2 is used to converge the power of the radio frequency signal in the B3 band to the second target power range of the equal output power curve.

[0094] In this embodiment, by setting the inductance values ​​of the second inductor and the third inductor and the capacitance value of the second capacitor, the power of the radio frequency signals in the B1 and B3 bands converges to the first target power range and the second target power range of the equal output power curve, respectively. This avoids the power of the radio frequency signals in the B1 and B3 bands from being unable to converge due to the influence of the power amplifier, thereby improving the performance of the antenna assembly.

[0095] For example, the capacitance of the first capacitor C1, the inductance of the first inductor L1, the inductance of the second inductor L2 and the inductance of the third inductor L3 affect the power of the radio frequency signal in the last channel of the B1 band, and the capacitance of the first capacitor C1, the second capacitor C2 and the inductance of the first inductor L1 affect the power of the radio frequency signal in the first channel of the B3 band.

[0096] In one embodiment, the second matching unit 41c further includes a fourth inductor L4. The fourth inductor L4 is electrically connected between the third sub-terminal of the second terminal of the second switching circuit 41c and the ground terminal GND. The inductance value of the fourth inductor L4 is used to cause the power of the radio frequency signal in the B1 band to rotate counterclockwise along the admittance circle on the Smith chart to the center of the corresponding equal output power curve.

[0097] In this embodiment, since the inductor affects the power of the radio frequency signal in the target frequency band, a fourth inductor used for tuning constitutes the second matching unit. By incorporating the fourth inductor, the power of the radio frequency signal in the B1 band can be redirected counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve. By further adjusting the power of the radio frequency signal in the B1 band through the matching structure with the fourth inductor, the power of the radio frequency signal in the B1 band can be further regulated, thereby improving the reliability of the antenna assembly.

[0098] For example, the second switching circuit 41c includes a first switch S1, a second switch S2, a third switch S3, and a fourth switch S4. The first terminal of the first switch S1 is electrically connected to the second terminal of the first capacitor C1, the first terminal of the first inductor L1, and the first terminal of the third matching unit 41b; its second terminal is electrically connected to the second inductor L2. The first terminal of the second switch S2 is electrically connected to the second terminal of the first capacitor C1, the first terminal of the first inductor L1, and the first terminal of the third matching unit 41b; its second terminal is electrically connected to the third inductor L3. The first terminal of the third switch S3 is electrically connected to the second terminal of the first capacitor C1, the first terminal of the first inductor L1, and the first terminal of the third matching unit 41b; its second terminal is electrically connected to the fourth inductor L4. The first terminal of the fourth switch S4 is electrically connected to the second terminal of the first capacitor C1, the first terminal of the first inductor L1, and the first terminal of the third matching unit 41b; its second terminal is electrically connected to the second capacitor C2.

[0099] In one embodiment, the first sub-matching circuit 41 further includes a third matching unit 41d. The third matching unit 41d is electrically connected between the second terminal of the first matching unit 41a and the first terminal of the first switching circuit 20, and the parameters of the third passive device in the third matching unit 41d are matched with a portion of the frequency band other than the target frequency band.

[0100] In this embodiment, by electrically connecting the third matching unit between the first matching unit and the first switching circuit, the parameters of the third passive device are matched with some frequency bands other than the target frequency band to enable effective transmission of radio frequency signals in that frequency band, thereby improving the reliability of the antenna assembly.

[0101] In one embodiment, such as Figure 3As shown, the first matching circuit 40 also includes a second sub-matching circuit 42. The second sub-matching circuit 42 is electrically connected between the second terminal of the first sub-matching circuit 41 and the first terminal of the first switching circuit 20. The end of the second sub-matching circuit 42 electrically connected to the first sub-matching circuit 41 constitutes the signal source 60 of the radio frequency signal.

[0102] In this embodiment, since the end of the second sub-matching circuit electrically connected to the first sub-matching circuit constitutes the signal source of the radio frequency signal, the first sub-matching circuit serves as the matching circuit at the antenna end, and the second sub-matching circuit and the second matching circuit serve as the matching circuit at the radio frequency end. By matching the parameters of the passive components in the matching circuits at both the antenna end and the radio frequency end with the target frequency band of the radio frequency signal, the power of the radio frequency signal at the target frequency band can reach the expected power from two aspects, thereby improving the performance of the antenna assembly.

[0103] In one embodiment, such as Figure 5 As shown, the second matching circuit 50 includes a fourth matching unit 51a and a fifth matching unit 51b. The fourth matching unit 51a is electrically connected between a first sub-terminal in the output of the power amplifier 30 and a first sub-terminal in the second terminal of the first switching circuit 20. The fifth matching unit 51b is electrically connected between a second sub-terminal in the output of the power amplifier 30 and a second sub-terminal in the second terminal of the first switching circuit 20. The parameters of the second passive devices in the fourth matching unit 51a and the fifth matching unit 51b are used to align the center of the equal output power curves for different target frequency bands to the matching point.

[0104] In this embodiment, since both the fourth and fifth matching units are electrically connected to the output of the power amplifier, the devices in the fourth and fifth matching units can respectively influence the center of the equal output power curves corresponding to multiple frequency bands of radio frequency signals. By matching the parameters of the second passive devices in the fourth and fifth matching units of the radio frequency matching circuit with the target frequency band of the radio frequency signal, the power of the radio frequency signal in the target frequency band can reach the expected power by shifting from the center of the equal output power curve, thereby improving the performance of the antenna assembly.

[0105] In one embodiment, the target frequency band includes the B1 and B3 bands in the mid-to-high frequency range. The parameters of the second passive device in the fourth matching unit 51a are used to make the center of the equal output power curve of the B1 band rotate counterclockwise along the equal impedance circle, then clockwise along the equal impedance circle, and then counterclockwise along the equal admittance circle on the Smith chart to turn towards the matching point. The parameters of the second passive device in the fifth matching unit 51b are used to make the center of the equal output power curve of the B3 band rotate counterclockwise along the equal impedance circle, then clockwise along the equal impedance circle, and then counterclockwise along the equal admittance circle on the Smith chart to turn towards the matching point.

[0106] In this embodiment, due to the RF power eccentricity, the power of the RF signals in bands B1 and B3 decreases significantly, resulting in a substantial impact on RF signal radiation. By using different matching units to shift the center of the equal output power curves for bands B1 and B3 in corresponding ways, the power of the RF signals in bands B1 and B3 increases due to the shift in the center of the equal output power curves, thereby improving the performance of the antenna assembly.

[0107] In one embodiment, the fourth matching unit 51a includes a fifth inductor L5, a sixth inductor L6, and a third capacitor C3. The first end of the fifth inductor L5 is electrically connected to a first sub-terminal of the second terminal of the first switching circuit 20, and the second end is electrically connected to the ground terminal GND. The inductance value of the fifth inductor L5 is used to rotate the center of the equal output power curve of the B1 frequency band counterclockwise along the equal admittance circle on the Smith chart to the matching point. The first end of the sixth inductor L6 is electrically connected to both the first sub-terminal of the second terminal of the first switching circuit 20 and the first end of the fifth inductor L5. The inductance value of the sixth inductor L6 is used to rotate the center of the equal output power curve of the B1 frequency band clockwise along the equal impedance circle on the Smith chart to the matching point. The first end of the third capacitor C3 is electrically connected to the second end of the sixth inductor L6, and the second end is electrically connected to a first sub-terminal of the output terminal of the power amplifier 30. The capacitance value of the third capacitor C3 is used to rotate the center of the equal output power curve of the B1 frequency band counterclockwise along the equal impedance circle on the Smith chart to the matching point.

[0108] In this embodiment, since capacitors and inductors affect the power of the RF signal in the target frequency band, a fourth matching unit is constructed using a fifth inductor, a sixth inductor, and a third capacitor. By incorporating the fifth inductor in parallel and the sixth inductor and third capacitor in series, the center of the equal output power curve in the B1 band can be rotated along the corresponding admittance circle or impedance circle on the Smith chart to point towards the matching point. By adjusting the power of the RF signal in the B1 band using the matching structure of the fifth inductor in parallel and the sixth inductor and third capacitor in series, the power of the RF signal in the B1 band can be adjusted independently, and the under-shifting or over-shifting of the center of the equal output power curve due to the lack of a second passive component is avoided, thereby improving the reliability of the antenna assembly.

[0109] In one embodiment, the inductance values ​​of the fifth inductor L5, the sixth inductor L6, and the third capacitor C3 are matched to the B1 frequency band. The inductance value of the fifth inductor L5 is 3nH-4nH, the inductance value of the sixth inductor L6 is 0.2nH-0.4nH, and the capacitance value of the third capacitor C3 is 0.1pF-0.3pF.

[0110] In this embodiment, since the inductance values ​​of the fifth and sixth inductors and the capacitance value of the third capacitor affect the power of the radio frequency signal in the B1 band, the inductance values ​​of the fifth and sixth inductors and the capacitance value of the third capacitor are set to match the B1 band so that the radio frequency signal in the B1 band can be transmitted through the path where the fourth matching unit is located. By setting the inductance value of the fifth inductor to 3nH-4nH, the inductance value of the sixth inductor to 0.2nH-0.4nH, and the capacitance value of the third capacitor to 0.1pF-0.3pF, the inductance values ​​of the fifth and sixth inductors and the capacitance value of the third capacitor can be matched with the B1 band, so that the power of the radio frequency signal in the B1 band converges and avoids excessive rise that would affect the bandwidth of the radio frequency signal, thereby improving the performance of the antenna assembly.

[0111] For example, the inductance of the fifth inductor L5 is 3.6nH, the inductance of the sixth inductor L6 is 0.3nH, and the capacitance of the third capacitor C3 is 0.2pF.

[0112] In one embodiment, the inductance values ​​of the fifth inductor L5, the sixth inductor L6, and the third capacitor C3 are used to make the power of the radio frequency signal in the B1 band converge to the first target power range of the equal output power curve.

[0113] In this embodiment, by setting the inductance values ​​of the fifth and sixth inductors and the capacitance value of the third capacitor, the power of the radio frequency signal in the B1 band converges to the first target power range of the equal output power curve, thus avoiding the inability of the power of the radio frequency signal in the B1 band to converge due to the influence of the power amplifier, thereby improving the performance of the antenna assembly.

[0114] In one embodiment, the fifth matching unit 51b includes a seventh inductor L7, an eighth inductor L8, and a fourth capacitor C4. The first terminal of the seventh inductor L7 is electrically connected to the second sub-terminal of the second terminal of the first switching circuit 20, and the second terminal is used to be electrically connected to the ground terminal GND. The inductance value of the seventh inductor L7 is used to rotate the center of the equal output power curve of the B3 frequency band counterclockwise along the equal admittance circle on the Smith chart to the matching point. The first terminal of the eighth inductor L8 is electrically connected to both the second sub-terminal of the second terminal of the first switching circuit 20 and the first terminal of the seventh inductor L7. The inductance value of the eighth inductor L8 is used to rotate the center of the equal output power curve of the B3 frequency band clockwise along the equal impedance circle on the Smith chart to the matching point. The first terminal of the fourth capacitor C4 is electrically connected to the second terminal of the eighth inductor L8, and the second terminal is electrically connected to the second sub-terminal of the output terminal of the power amplifier 30. The capacitance value of the fourth capacitor C4 is used to rotate the center of the equal output power curve of the B3 frequency band counterclockwise along the equal impedance circle on the Smith chart to the matching point.

[0115] In this embodiment, since capacitors and inductors affect the power of the RF signal in the target frequency band, a fifth matching unit is constructed using a seventh inductor, an eighth inductor, and a fourth capacitor. By incorporating the seventh inductor in parallel and the eighth inductor and eighth capacitor in series, the center of the equal output power curve in the B3 band can be rotated along the corresponding admittance circle or impedance circle on the Smith chart to move towards the matching point. By adjusting the power of the RF signal in the B3 band using the matching structure of the seventh inductor in parallel and the eighth inductor and eighth capacitor in series, the power of the RF signal in the B3 band can be adjusted independently, and the under-shifting or over-shifting of the center of the equal output power curve due to the lack of a second passive component is avoided, thereby improving the reliability of the antenna assembly.

[0116] In one embodiment, the inductance values ​​of the seventh inductor L7, the eighth inductor L8, and the fourth capacitor C4 are matched to the B3 frequency band. The inductance value of the seventh inductor L7 is 9nH-10nH, the inductance value of the eighth inductor L8 is 0.5nH-2nH, and the capacitance value of the fourth capacitor C4 is 0.3pF-1pF.

[0117] In this embodiment, since the inductance values ​​of the seventh and eighth inductors and the capacitance value of the fourth capacitor affect the power of the radio frequency signal in the B3 band, the inductance values ​​of the seventh and eighth inductors and the capacitance value of the fourth capacitor are set to match the B3 band so that the radio frequency signal in the B3 band can be transmitted through the path where the fifth matching unit is located. By setting the inductance value of the seventh inductor to 9nH-10nH, the inductance value of the eighth inductor to 0.5nH-2nH, and the capacitance value of the fourth capacitor to 0.3pF-1pF, the inductance values ​​of the seventh and eighth inductors and the capacitance value of the fourth capacitor can match the B3 band, thereby converging the power of the radio frequency signal in the B3 band and preventing it from rising too much and affecting the bandwidth of the radio frequency signal, thus improving the performance of the antenna assembly.

[0118] For example, the inductance of the seventh inductor L7 is 9.1nH, the inductance of the eighth inductor L8 is 1nH, and the capacitance of the fourth capacitor C4 is 0.6pF.

[0119] In one embodiment, the inductance values ​​of the seventh inductor L7, the eighth inductor L8, and the fourth capacitor C4 are used to make the power of the radio frequency signal in the B3 band converge to the second target power range of the equal output power curve.

[0120] In this embodiment, by setting the inductance values ​​of the seventh and eighth inductors and the capacitance value of the fourth capacitor, the power of the radio frequency signal in the B3 band converges to the second target power range of the equal output power curve, thus avoiding the inability of the radio frequency signal in the B3 band to converge due to the influence of the power amplifier, thereby improving the performance of the antenna assembly.

[0121] For example, such as Figure 4As shown, the third matching unit 41b includes a ninth inductor L9, a fifth capacitor C5, and a sixth capacitor C6. The first terminal of the ninth inductor L9 is electrically connected to the second terminal of the first matching unit 41a and the first terminal of the second switching circuit 41c. The first terminal of the fifth capacitor C5 is electrically connected to the second terminal of the ninth inductor L9, and its second terminal is electrically connected to the signal source 60. The first terminal of the sixth capacitor C6 is electrically connected to the second terminal of the fifth capacitor C5 and the signal source 60, and its second terminal is used to connect to the ground terminal GND.

[0122] For example, such as Figure 6 As shown, the second sub-matching circuit 42 includes a tenth inductor L10, an eleventh inductor L11, a seventh capacitor C7, and an eighth capacitor C8. The first terminal of the tenth inductor L10 forms a signal source 60, and the second terminal is electrically connected to the ground terminal GND. The first terminal of the eleventh inductor L11 is electrically connected to the first terminal of the tenth inductor L10. The first terminal of the seventh capacitor C7 is electrically connected to the second terminal of the eleventh inductor L11, and the second terminal is electrically connected to the first terminal of the first switching circuit 20. The first terminal of the eighth capacitor C8 is electrically connected to both the second terminal of the seventh capacitor C7 and the first terminal of the first switching circuit 20, and the second terminal is electrically connected to the ground terminal GND.

[0123] For example, the first switching circuit 20 includes a 3P3T switch.

[0124] An exemplary embodiment of this disclosure provides an antenna assembly, such as Figure 7As shown, the antenna assembly includes an antenna 10, a first switching circuit 20, a power amplifier 30, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a first inductor L1, a second inductor L2, a third inductor L3, a fourth inductor L4, a fifth inductor L5, a sixth inductor L6, a seventh inductor L7, an eighth inductor L8, a ninth inductor L9, a tenth inductor L10, an eleventh inductor L11, a first switch S1, a second switch S2, a third switch S3, and a fourth switch S4. The first terminal of the first capacitor C1 is electrically connected to the antenna 10, and its second terminal is electrically connected to the first terminals of the first inductors L1, L9, S1, S2, S3, and S4. The second capacitor C2 is electrically connected between the second terminal of the fourth switch S4 and the ground terminal GND. The first terminal of the third capacitor C3 is electrically connected to the second terminal of the sixth inductor L6, and the second terminal is electrically connected to the first sub-terminal of the output terminal of the power amplifier 30. The first terminal of the fourth capacitor C4 is electrically connected to the second terminal of the eighth inductor L8, and the second terminal is electrically connected to the second sub-terminal of the output terminal of the power amplifier 30. The first terminal of the fifth capacitor C5 is electrically connected to the second terminal of the ninth inductor L9, and the second terminal is electrically connected to the first terminals of the sixth capacitor C6, the tenth inductor L10, and the eleventh inductor L11. The second terminal of the sixth capacitor C6 is used to connect to the ground terminal GND. The first terminal of the seventh capacitor C7 is electrically connected to the second terminal of the eleventh inductor L11, and the second terminal is electrically connected to the first terminal of the eighth capacitor C8 and the first terminal of the first switching circuit 20. The second terminal of the eighth capacitor C8 is used to connect to the ground terminal GND. The second terminal of the first inductor L1 is used to connect to the ground terminal GND. The second inductor L2 is electrically connected between the second terminal of the first switch S1 and the ground terminal GND. The third inductor L3 is electrically connected between the second terminal of the second switch S2 and the ground terminal GND. The fourth inductor L4 is electrically connected between the second terminal of the third switch S3 and the ground terminal GND. The first terminal of the fifth inductor L5 is electrically connected to the first terminal of the sixth inductor L6 and the first sub-terminal of the second terminal of the first switching circuit 20, and the second terminal is used to connect to the ground terminal GND. The first terminal of the seventh inductor L7 is electrically connected to the first terminal of the eighth inductor L8 and the second sub-terminal of the second terminal of the first switching circuit 20, and the second terminal is used to connect to the ground terminal GND. The second terminal of the tenth inductor L10 is used to connect to the ground terminal GND.The capacitance values ​​of capacitors are as follows: C1 (30pF-40pF), C2 (0.2pF-0.4pF), C3 (0.1pF-0.3pF), C4 (0.3pF-1pF), L1 (5nH-6nH), L2 (30nH-40nH), L3 (10nH-20nH), L5 (3nH-4nH), L6 (0.2nH-0.4nH), L7 (9nH-10nH), and L8 (0.5nH-2nH). Figure 8 As shown, after taking the values ​​of the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the first inductor L1, the second inductor L2, the third inductor L3, the fifth inductor L5, the sixth inductor L6, the seventh inductor L7, and the eighth inductor L8 according to the above values, the power of the radio frequency signals in the B1 and B3 bands shifts to the center of the corresponding equal output power curves, and the equal output power curves corresponding to the radio frequency signals in the B1 and B3 bands shift to the matching point of the Smith chart. Figure 8 Only the equal output power curves and Smith charts corresponding to the radio frequency signals in the B3 band are shown. The values ​​in the equal output power curves represent power in dBm, and S represents the power curve of the radio frequency signal in the B3 band.

[0125] In one exemplary embodiment, an electronic device is provided, such as a mobile phone, laptop computer, tablet computer, and wearable device. The electronic device includes the antenna assembly described above.

[0126] refer to Figure 9 As shown, the electronic device 400 may include one or more of the following components: processing component 402, memory 404, power supply component 406, multimedia component 408, audio component 410, input / output (I / O) interface 412, sensor component 414, and communication component 416.

[0127] Processing component 402 typically controls the overall operation of electronic device 400, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0128] Memory 404 is configured to store various types of data to support the operation of electronic device 400. Examples of this data include instructions for any application or method operating on electronic device 400, contact data, phonebook data, messages, pictures, videos, etc. Memory 404 can be implemented by any type of volatile or non-volatile storage terminal or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0129] Power supply component 406 provides power to various components of electronic device 400. Power supply component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 400.

[0130] Multimedia component 408 includes a screen that provides an output interface between electronic device 400 and user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 408 includes a front-facing camera module and / or a rear-facing camera module. When electronic device 400 is in an operating mode, such as shooting mode or video mode, the front-facing camera module and / or rear-facing camera module may receive external multimedia data. Each front-facing camera module and rear-facing camera module may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0131] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when electronic device 400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0132] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0133] Sensor assembly 414 includes one or more sensors for providing state assessments of various aspects of electronic device 400. For example, sensor assembly 414 may detect the on / off state of electronic device 400, the relative positioning of components such as the display and keypad of electronic device 400, changes in position of electronic device 400 or a component of electronic device 400, the presence or absence of user contact with electronic device 400, orientation or acceleration / deceleration of electronic device 400, and temperature changes of electronic device 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0134] Communication component 416 is configured to facilitate wired or wireless communication between electronic device 400 and other terminals. Electronic device 400 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0135] In an exemplary embodiment, the electronic device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing terminals (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0136] In one exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of an electronic device 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage terminal, etc. When the instructions in the storage medium are executed by the processor of the terminal, the terminal is able to perform the method shown in the above embodiments.

[0137] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0138] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0139] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0140] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: antenna; First switching circuit; A power amplifier that outputs radio frequency signals of different frequency bands to the antenna through the first switching circuit; A first matching circuit is electrically connected between a first terminal of the first switching circuit and the antenna, and the first matching circuit includes a first passive device. A second matching circuit is electrically connected between the second terminal of the first switching circuit and the output terminal of the power amplifier. The second matching circuit includes a second passive device. Wherein, the parameters of the first passive device and the parameters of the second passive device are matched with the target frequency band of the radio frequency signal. The parameters of the first passive device are used to steer the power of the radio frequency signal in the target frequency band to the center of the corresponding equal output power curve, and the parameters of the second passive device are used to steer the center of the equal output power curve to the matching point of the Smith chart.

2. The antenna assembly according to claim 1, characterized in that, The first matching circuit includes: A first sub-matching circuit is electrically connected between the antenna and a first terminal of the first switching circuit. The parameters of the first passive device in the first sub-matching circuit are used to steer the power of the radio frequency signal in the target frequency band toward the center of the corresponding equal output power curve.

3. The antenna assembly according to claim 2, characterized in that, The first sub-matching circuit includes: A first matching unit, wherein a first end of the first matching unit is electrically connected to the antenna, and a second end of the first matching unit is electrically connected to the first end of the first switching circuit; The second switching circuit has its first terminal electrically connected to both the second terminal of the first matching unit and the first terminal of the first switching circuit. The second matching unit is electrically connected between the second terminal of the second switching circuit and the ground terminal; Wherein, the parameters of each of the first passive devices in the first matching unit and the parameters of some of the first passive devices in the second matching unit are used to direct the power of the radio frequency signal of a portion of the target frequency band to the center of the corresponding equal output power curve, and the parameters of each of the first passive devices in the first matching unit and the parameters of another portion of the first passive devices in the second matching unit are used to direct the power of the radio frequency signal of another portion of the target frequency band to the center of the corresponding equal output power curve.

4. The antenna assembly according to claim 3, characterized in that, The target frequency band includes the B1 and B3 bands in the mid-to-high frequency range. The parameters of each of the first passive devices in the first matching unit and the parameters of some of the first passive devices in the second matching unit are used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the equal admittance circle and then counterclockwise along the equal impedance circle on the Smith chart to turn towards the center of the corresponding equal output power curve. The parameters of each of the first passive devices in the first matching unit and the parameters of another part of the first passive devices in the second matching unit are used to make the power of the radio frequency signal in the B3 band rotate clockwise along the equal admittance circle, then counterclockwise along the equal admittance circle, and then counterclockwise along the equal impedance circle on the Smith chart to turn towards the center of the corresponding equal output power curve.

5. The antenna assembly according to claim 4, characterized in that, The first matching unit includes: A first capacitor, the first end of which is electrically connected to the antenna, and the second end of which is electrically connected to the first end of both the first and second switching circuits. The capacitance of the first capacitor is used to make the power of the radio frequency signals in the B1 and B3 bands rotate counterclockwise along the equal impedance circle on the Smith chart to the center of the corresponding equal output power curve. The first inductor has its first end electrically connected to the second end of the first capacitor, the first end of the first switching circuit, and the first end of the second switching circuit. The second end of the first inductor is used to be electrically connected to the ground terminal. The inductance value of the first inductor is used to make the power of the radio frequency signals in the B1 and B3 bands rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

6. The antenna assembly according to claim 5, characterized in that, The capacitance of the first capacitor and the inductance of the first inductor are matched with both the B1 and B3 frequency bands; the capacitance of the first capacitor is 30pF-40pF, and the inductance of the first inductor is 5nH-6nH.

7. The antenna assembly according to claim 4, characterized in that, The second matching unit includes: The second inductor is electrically connected between the first sub-terminal in the second terminal of the second switching circuit and the ground terminal. The inductance value of the second inductor is used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve. The third inductor is electrically connected between the second sub-terminal in the second terminal of the second switching circuit and the ground terminal. The inductance value of the third inductor is used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the admittance circle on the Smith chart to the center of the corresponding equal output power curve. The second capacitor is electrically connected between the fourth sub-terminal of the second terminal of the second switching circuit and the ground terminal. The capacitance of the second capacitor is used to make the power of the radio frequency signal in the B3 band rotate clockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

8. The antenna assembly according to claim 7, characterized in that, The inductance values ​​of the second inductor and the third inductor are matched with the B1 frequency band, and the capacitance value of the second capacitor is matched with the B3 frequency band; the inductance value of the second inductor is 30nH-40nH, the inductance value of the third inductor is 10nH-20nH, and the capacitance value of the second capacitor is 0.2pF-0.4pF.

9. The antenna assembly according to claim 7, characterized in that, The second matching unit further includes: The fourth inductor is electrically connected between the third sub-terminal of the second terminal of the second switching circuit and the ground terminal. The inductance value of the fourth inductor is used to make the power of the radio frequency signal in the B1 band rotate counterclockwise along the equal admittance circle on the Smith chart to the center of the corresponding equal output power curve.

10. The antenna assembly according to claim 3, characterized in that, The first sub-matching circuit also includes: The third matching unit is electrically connected between the second end of the first matching unit and the first end of the first switching circuit. The parameters of the third passive device in the third matching unit are matched with some frequency bands other than the target frequency band.

11. The antenna assembly according to claim 2, characterized in that, The first matching circuit further includes: The second sub-matching circuit is electrically connected between the second terminal of the first sub-matching circuit and the first terminal of the first switching circuit. The end of the second sub-matching circuit that is electrically connected to the first sub-matching circuit constitutes the signal source of the radio frequency signal.

12. The antenna assembly according to any one of claims 1 to 11, characterized in that, The second matching circuit includes: The fourth matching unit is electrically connected between the first sub-terminal of the output terminal of the power amplifier and the first sub-terminal of the second terminal of the first switching circuit; The fifth matching unit is electrically connected between the second sub-terminal of the output terminal of the power amplifier and the second sub-terminal of the second terminal of the first switching circuit; The parameters of the second passive device in the fourth matching unit and the fifth matching unit are respectively used to turn the center of the equal output power curves of different target frequency bands toward the matching point.

13. The antenna assembly according to claim 12, characterized in that, The target frequency band includes the B1 and B3 bands in the mid-to-high frequency range. The parameters of the second passive device in the fourth matching unit are used to make the center of the equal output power curve of the B1 band rotate counterclockwise along the equal impedance circle, then clockwise along the equal impedance circle, and then counterclockwise along the equal admittance circle on the Smith chart to turn towards the matching point. The parameters of the second passive device in the fifth matching unit are used to make the center of the equal output power curve of the B3 band rotate counterclockwise along the equal impedance circle, then clockwise along the equal impedance circle, and then counterclockwise along the equal admittance circle on the Smith chart to turn towards the matching point.

14. The antenna assembly according to claim 13, characterized in that, The fourth matching unit includes: The fifth inductor has its first end electrically connected to the first sub-terminal of the second end of the first switching circuit, and its second end electrically connected to the ground terminal. The inductance value of the fifth inductor is used to make the center of the equal output power curve of the B1 frequency band rotate counterclockwise along the equal admittance circle on the Smith chart to the matching point. The sixth inductor, the first end of which is electrically connected to the first sub-terminal of the second terminal of the first switching circuit and the first end of the fifth inductor, the inductance value of the sixth inductor is used to make the center of the equal output power curve of the B1 band rotate clockwise along the equal impedance circle on the Smith chart to the matching point. The third capacitor has its first terminal electrically connected to the second terminal of the sixth inductor, and its second terminal electrically connected to the first sub-terminal of the output terminal of the power amplifier. The capacitance of the third capacitor is used to rotate the center of the equal output power curve of the B1 band counterclockwise on the Smith chart along the equal impedance circle to the matching point.

15. The antenna assembly according to claim 14, characterized in that, The inductance values ​​of the fifth inductor, the sixth inductor, and the third capacitor are matched to the B1 frequency band; the inductance value of the fifth inductor is 3nH-4nH, the inductance value of the sixth inductor is 0.2nH-0.4nH, and the capacitance value of the third capacitor is 0.1pF-0.3pF.

16. The antenna assembly according to claim 13, characterized in that, The fifth matching unit includes: The seventh inductor has its first end electrically connected to the second sub-terminal of the second terminal of the first switching circuit, and its second end electrically connected to the ground terminal. The inductance value of the seventh inductor is used to make the center of the equal output power curve of the B3 frequency band rotate counterclockwise along the equal admittance circle on the Smith chart to the matching point. The eighth inductor, the first end of which is electrically connected to the second sub-terminal of the second terminal of the first switching circuit and the first end of the seventh inductor, the inductance value of the eighth inductor is used to make the center of the equal output power curve of the B3 frequency band rotate clockwise on the Smith chart along the equal impedance circle to turn towards the matching point. A fourth capacitor, the first end of which is electrically connected to the second end of the eighth inductor, and the second end of which is electrically connected to the second sub-terminal of the output terminal of the power amplifier, wherein the capacitance value of the fourth capacitor is used to rotate the center of the equal output power curve of the B3 band counterclockwise on the Smith chart along the equal impedance circle to the matching point.

17. The antenna assembly according to claim 16, characterized in that, The inductance values ​​of the seventh inductor, the eighth inductor, and the fourth capacitor are matched to the B3 frequency band; the inductance value of the seventh inductor is 9nH-10nH, the inductance value of the eighth inductor is 0.5nH-2nH, and the capacitance value of the fourth capacitor is 0.3pF-1pF.

18. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1 to 17.

Images