Antenna structure, radio frequency device and electronic equipment

Abstract

The utility model relates to an antenna structure, a radio frequency device and electronic equipment. The antenna structure comprises a first antenna, a second antenna, a first tuning path, a second tuning path, a third tuning path, a fourth tuning path and a single-pole multi-throw switch, the single-pole multi-throw switch comprises a first port, a second port, a third port, a fourth port and a fifth port; the first tuning path is electrically connected with the first port, the second tuning path is electrically connected with the second port, the third tuning path is electrically connected with the fourth port, the fourth tuning path is electrically connected with the fourth port, and the fifth port is grounded; the first antenna is electrically connected with at least one of the first tuning path, the second tuning path, the third tuning path and the fourth tuning path, and the second antenna is electrically connected with at least one of the first tuning path, the second tuning path, the third tuning path and the fourth tuning path and is different from the tuning path connected with the first antenna; the single-pole multi-throw switch is used for selectively controlling connection and disconnection between the ports. Therefore, the number of switches is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of communication equipment, and in particular to an antenna structure radio frequency device and an electronic device. Background Art

[0002] With the rapid development of 5G mobile phones, the frequency bands required for each antenna are increasing, and major terminal manufacturers are also placing higher and higher requirements on antenna performance. In order to ensure the efficiency of the antenna radiator, an antenna tuning switch is used. However, in existing technical solutions, an antenna tuning switch is generally only connected to one antenna. However, in actual use, the antenna tuning switch does not use all channels, resulting in a waste of resources. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an antenna structure, a radio frequency device and an electronic device.

[0004] In a first aspect, the present application provides an antenna structure, the antenna structure comprising:

[0005] a first antenna, a second antenna, a first tuning path, a second tuning path, a third tuning path, a fourth tuning path, and a single-pole multi-throw switch;

[0006] The single-pole multi-throw switch at least includes a first port, a second port, a third port, a fourth port and a fifth port;

[0007] The first tuning path is electrically connected to the first port, the second tuning path is electrically connected to the second port, the third tuning path is electrically connected to the fourth port, the fourth tuning path is electrically connected to the fourth port, and the fifth port is grounded;

[0008] The first antenna is electrically connected to at least one of the first tuning path, the second tuning path, the third tuning path, and the fourth tuning path, and the second antenna is electrically connected to at least one of the first tuning path, the second tuning path, the third tuning path, and the fourth tuning path, and is different from the tuning path connected to the first antenna;

[0009] The single-pole multi-throw switch is used to selectively control the connection and disconnection between the first port and the fifth port, the connection and disconnection between the second port and the fifth port, the connection and disconnection between the third port and the fifth port, and the connection and disconnection between the fourth port and the fifth port.

[0010] Optionally, the first antenna is electrically connected to the first tuning path and the second tuning path, and the second antenna is electrically connected to the third tuning path and the fourth tuning path.

[0011] Optionally, the antenna structure further includes a first inductor, a second inductor, a third inductor, a fourth inductor, a fifth inductor, a sixth inductor, a first capacitor and a second capacitor;

[0012] The first inductor is electrically connected between the first antenna and the first tuning path, the first capacitor is electrically connected between the first antenna and the second tuning path, a first end of the second inductor is electrically connected between the first antenna and the first inductor and the first capacitor, a second end of the second inductor is grounded, a first end of the third inductor is electrically connected between the first inductor and the first tuning path, and a second end of the third inductor is grounded;

[0013] The fourth inductor is electrically connected between the second antenna and the third tuning path, the second capacitor is electrically connected between the second antenna and the fourth tuning path, the first end of the fifth inductor is electrically connected between the second antenna and the fourth inductor and the second capacitor, the second end of the fifth inductor is grounded, the first end of the sixth inductor is electrically connected between the second capacitor and the fourth tuning path, and the second end of the sixth inductor is grounded.

[0014] Optionally, the first antenna is electrically connected to the first tuning path, the second tuning path and the third tuning path, and the second antenna is electrically connected to the fourth tuning path.

[0015] Optionally, the antenna structure further includes a seventh inductor, an eighth inductor, a ninth inductor, a tenth inductor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor;

[0016] A first end of the seventh inductor is electrically connected to the first antenna, a second end of the seventh inductor is electrically connected to a first end of the third capacitor, a second end of the third capacitor is electrically connected to the first tuning path, a first end of the eighth inductor is electrically connected to a second end of the seventh inductor, a second end of the eighth inductor is electrically connected to the second tuning path, a first end of the fourth capacitor is electrically connected to a second end of the seventh inductor, a second end of the fourth capacitor is electrically connected to the third tuning path, a first end of the fifth capacitor is electrically connected between the second end of the seventh inductor and the first end of the third capacitor, and a second end of the fifth capacitor is grounded;

[0017] The ninth inductor is electrically connected between the second antenna and the fourth tuning path, the first end of the tenth inductor is electrically connected between the ninth inductor and the second antenna, the second end of the tenth inductor is grounded, the first end of the sixth capacitor is electrically connected between the ninth inductor and the second antenna, and the second end of the sixth capacitor is grounded.

[0018] Optionally, the antenna structure further includes a sixth port;

[0019] The sixth port is used for electrically connecting to a data bus.

[0020] Optionally, the antenna structure further includes a seventh port;

[0021] The seventh port is used for electrically connecting to the identity recognition bus.

[0022] Optionally, the antenna structure further includes an eighth port;

[0023] The eighth port is used for electrically connecting to a clock bus.

[0024] In a second aspect, the present application further provides a radio frequency device, comprising the antenna structure as described in any one of the first aspects.

[0025] In a third aspect, the present application further provides an electronic device, comprising the radio frequency device as described in the second aspect.

[0026] The solution provided by this application has the following advantages over the existing technical solutions:

[0027] The present application provides an antenna structure, a radio frequency device and an electronic device. The antenna structure includes: a first antenna, a second antenna, a first tuning path, a second tuning path, a third tuning path, a fourth tuning path and a single-pole multi-throw switch; the single-pole multi-throw switch includes at least a first port, a second port, a third port, a fourth port and a fifth port; the first tuning path is electrically connected to the first port, the second tuning path is electrically connected to the second port, the third tuning path is electrically connected to the fourth port, the fourth tuning path is electrically connected to the fourth port, and the fifth port is grounded; the first antenna is electrically connected to at least one of the first tuning path, the second tuning path, the third tuning path and the fourth tuning path, and the second antenna is electrically connected to at least one of the first tuning path, the second tuning path, the third tuning path and the fourth tuning path, and is different from the tuning path connected to the first antenna; the single-pole multi-throw switch is used to selectively control the on-off between the first port and the fifth port, the on-off between the second port and the fifth port, the on-off between the third port and the fifth port, and the on-off between the fourth port and the fifth port. Based on the above scheme, the present application actually electrically connects the first antenna and the second antenna to the same single-pole multi-throw switch, and through the control of the single-pole multi-throw switch, the combination switch of each tuning path switches the antenna frequency, thereby saving the number of switches while meeting the tuning requirements of the first antenna and the second antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of antenna structure in related scheme;

[0029] Figure 2 A schematic diagram of an antenna structure provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of an antenna structure circuit illustrated in an embodiment of the present application;

[0031] Figure 4 A schematic diagram of another antenna structure provided in an embodiment of the present application;

[0032] Figure 5 A schematic diagram of another antenna structure circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0035] Figure 1 It is a schematic diagram of the antenna structure in the relevant scheme. In the relevant scheme, the first antenna 100 and the second antenna 200 are antennas of different frequency bands. In the relevant scheme, an antenna tuning switch and a matching circuit 500 are set. The antenna frequency and input impedance are adjusted by the antenna tuning switch and the matching circuit 500 to match the output impedance of the radio frequency signal, reduce signal reflection, and improve signal transmission efficiency. During operation, the antenna tuning switch 400 electrically connected to the first antenna 100 and the antenna tuning switch 400 electrically connected to the second antenna 200 respectively adjust the antenna frequency through the switch combination of each contact. However, in actual scenarios, the first antenna 100 and / or the second antenna 200 do not actually need so many switch combinations, which leads to a waste of antenna tuning switches.

[0036] In order to solve the above technical problems, the embodiment of the present application provides an antenna structure. Figure 2 A schematic diagram of an antenna structure provided in an embodiment of the present application, the antenna structure includes:

[0037] The first antenna 100 , the second antenna 200 , the first tuning path 101 , the second tuning path 102 , the third tuning path 103 , the fourth tuning path 104 and the single-pole multi-throw switch 300 .

[0038] The SPMT switch 300 at least includes a first port K1 , a second port K2 , a third port K3 , a fourth port K4 and a fifth port K5 .

[0039] The first tuning path 101 is electrically connected to the first port K1 , the second tuning path 102 is electrically connected to the second port K2 , the third tuning path 103 is electrically connected to the fourth port K4 , the fourth tuning path 104 is electrically connected to the fourth port K4 , and the fifth port K5 is grounded.

[0040] The first antenna 100 is electrically connected to at least one of the first tuning path 101, the second tuning path 102, the third tuning path 103 and the fourth tuning path 104, and the second antenna 200 is electrically connected to at least one of the first tuning path 101, the second tuning path 102, the third tuning path 103 and the fourth tuning path 104, and is different from the tuning path connected to the first antenna 100.

[0041] The SPMT switch 300 is used to selectively control the connection between the first port K1 and the fifth port K5 , the connection between the second port K2 and the fifth port K5 , the connection between the third port K3 and the fifth port K5 , and the connection between the fourth port K4 and the fifth port K5 .

[0042] like Figure 2 As shown, Figure 2 In the example, a single-pole multi-throw switch 300 is electrically connected to the first antenna 100 and the second antenna 200 at the same time, and the first antenna 100 and the second antenna 200 are electrically connected to at least part of the contacts of the single-pole multi-throw switch 300. Therefore, the first antenna 100 and the second antenna 200 can both meet certain tuning requirements. Figure 2 A total of four tuning paths are shown, namely, a first tuning path 101, a second tuning path 102, a third tuning path 103 and a fourth tuning path 104. If the first antenna 100 is electrically connected to the first tuning path 101 and the second tuning path 102, the second antenna 200 is electrically connected to the remaining third tuning path 103 and the fourth tuning path 104 (not electrically connected to the first antenna 100).

[0043] Under this connection relationship, the first antenna 100 and the second antenna 200 can adjust the frequency through the switching effect of at least part of the tuning path or the switching combination effect of part of the tuning path to achieve the purpose of antenna tuning. Figure 1 The solution in the embodiment saves a single-pole multi-throw switch 300, thus saving costs.

[0044] In some embodiments, the first antenna 100 is electrically connected to the first tuning path 101 and the second tuning path 102 , and the second antenna 200 is electrically connected to the third tuning path 103 and the fourth tuning path 104 .

[0045] Continue reading Figure 2In this electrical connection mode, the first antenna 100 and the second antenna 200 can form four switch combinations, that is, the first antenna 100 has the first tuning path 101 open and the second tuning path 102 open, or the first tuning path 101 open and the second tuning path 102 closed, or the first tuning path 101 closed and the second tuning path 102 open, or the first tuning path 101 closed and the second tuning path 102 closed. The second antenna 200 is similar to the first antenna 100, and will not be described in detail here. In this case, the tuning requirements of the first antenna 100 and the second antenna 200 can be basically met.

[0046] Figure 3 This is a schematic diagram of an antenna structure circuit according to an embodiment of the present application. In some embodiments, the antenna structure further includes 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 first capacitor C1 and a second capacitor C2.

[0047] The first inductor L1 is electrically connected between the first antenna 100 and the first tuning path 101, the first capacitor C1 is electrically connected between the first antenna 100 and the second tuning path 102, a first end of the second inductor L2 is electrically connected between the first antenna 100 and the first inductor L1 and the first capacitor C1, a second end of the second inductor L2 is grounded, a first end of the third inductor L3 is electrically connected between the first inductor L1 and the first tuning path 101, and a second end of the third inductor L3 is grounded.

[0048] The fourth inductor L4 is electrically connected between the second antenna 200 and the third tuning path 103, the second capacitor C2 is electrically connected between the second antenna 200 and the fourth tuning path 104, the first end of the fifth inductor L5 is electrically connected between the second antenna 200 and the fourth inductor L4 and the second capacitor C2, the second end of the fifth inductor L5 is grounded, the first end of the sixth inductor L6 is electrically connected between the second capacitor C2 and the fourth tuning path 104, and the second end of the sixth inductor L6 is grounded.

[0049] exist Figure 2 In the corresponding implementation mode, the antenna structure in the embodiment of the present application may further include a first matching circuit (i.e., the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the fifth inductor L5, the sixth inductor L6 and the first capacitor C1 and the second capacitor C2), and the second matching circuit is used to adjust the impedance. In different tuning path switch combinations, the impedance can be adjusted by adjusting Figure 3 The capacitors and inductors in the circuit can adjust the impedance and match the output impedance of the RF signal at the current frequency, so that the current frequency band can obtain better signal transmission efficiency.

[0050] Figure 4Another schematic diagram of an antenna structure provided by an embodiment of the present application: In some embodiments, the first antenna 100 is electrically connected to the first tuning path 101 , the second tuning path 102 , and the third tuning path 103 , and the second antenna 200 is electrically connected to the fourth tuning path 104 .

[0051] like Figure 4 As shown, in some scenarios, the first antenna 100 and the second antenna 200 may correspond to different tuning requirements. For example, the first antenna 100 may require five tuning switch combinations to meet the frequency adjustment requirements, and the second antenna 200 may only require one tuning switch combination to meet the frequency adjustment requirements.

[0052] In this case, the embodiment of the present application can electrically connect the first antenna 100 to the first tuning path 101, the second tuning path 102 and the third tuning path 103, and electrically connect the second antenna 200 to the fourth tuning path 104. In this connection mode, the first tuning path 101, the second tuning path 102 and the third tuning path 103 can form a total of eight tuning switch combinations. The fourth tuning path 104 can form two tuning switch modes through the switching effect. In the case where the first antenna 100 has a large frequency adjustment range and requires more tuning path switch combinations, and the second antenna 200 has a small frequency adjustment range and does not require more tuning path switch combinations, the above-mentioned unequal distribution method can be used to still meet the tuning requirements of the two antennas through a single-pole multi-throw switch 300.

[0053] Figure 5 Another circuit diagram of an antenna structure provided in an embodiment of the present application. In some embodiments, the antenna structure further includes a seventh inductor L7, an eighth inductor L8, a ninth inductor L9, a tenth inductor L10, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6.

[0054] A first end of the seventh inductor L7 is electrically connected to the first antenna 100, a second end of the seventh inductor L7 is electrically connected to a first end of the third capacitor C3, a second end of the third capacitor C3 is electrically connected to the first tuning path 101, a first end of the eighth inductor L8 is electrically connected to a second end of the seventh inductor L7, a second end of the eighth inductor L8 is electrically connected to the second tuning path 102, a first end of the fourth capacitor C4 is electrically connected to a second end of the seventh inductor L7, a second end of the fourth capacitor C4 is electrically connected to the third tuning path 103, a first end of the fifth capacitor C5 is electrically connected between the second end of the seventh inductor L7 and the first end of the third capacitor C3, and a second end of the fifth capacitor C5 is grounded.

[0055] The ninth inductor L9 is electrically connected between the second antenna 200 and the fourth tuning path 104, the first end of the tenth inductor L10 is electrically connected between the ninth inductor L9 and the second antenna 200, the second end of the tenth inductor L10 is grounded, the first end of the sixth capacitor C6 is electrically connected between the ninth inductor L9 and the second antenna 200, and the second end of the sixth capacitor C6 is grounded.

[0056] exist Figure 4 In the corresponding implementation mode, the antenna structure in the embodiment of the present application may further include a second matching circuit (i.e., the seventh inductor L7, the eighth inductor L8, the ninth inductor L9, the tenth inductor L10, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5 and the sixth capacitor C6), and the second matching circuit is used to adjust the impedance. In different tuning path switch combinations, the impedance can be adjusted by adjusting Figure 3 The capacitors and inductors in the circuit can adjust the impedance and match the output impedance of the RF signal at the current frequency, so that the current frequency band can obtain better signal transmission efficiency.

[0057] Continue reading Figure 1 In some embodiments, the antenna structure further includes a sixth port K6.

[0058] The sixth port K6 is used for electrically connecting to the data bus SDDATA.

[0059] like Figure 1 As shown, the signals received or transmitted by the first antenna 100 and the second antenna 200 can be transmitted to an external control element via a data bus SDATA.

[0060] Continue reading Figure 1 In some embodiments, the antenna structure further includes a seventh port K7.

[0061] The seventh port K7 is used for electrically connecting to the identity identification bus USID.

[0062] Specifically, the identity identification bus USID can be electrically connected to the identity identification element to identify the identity information of the first antenna 100 and the second antenna 200 or other elements, and perform signal transmission when it is determined that the identity information is consistent.

[0063] Continue reading Figure 1 In some embodiments, the antenna structure further includes an eighth port K8.

[0064] The eighth port K8 is used for electrically connecting to the clock bus SCLK.

[0065] Specifically, the clock bus SCLK can be electrically connected to the clock control element to provide a clock signal to the antenna structure so that data transmission and processing in the antenna structure can be performed in a correct order and time.

[0066] Continue reading Figure 1 The antenna structure provided in the embodiment of the present application may further include a ninth port K9, which is used to electrically connect the power supply voltage VIO, and a tenth port K10, which is used to ground.

[0067] An embodiment of the present application also provides a radio frequency device, comprising an antenna structure as described in any one of the above antenna structure embodiments.

[0068] The radio frequency device provided in the embodiment of the present application has the same technical features as the above-mentioned antenna structure, and therefore can achieve the same technical effects and solve the same technical problems, which will not be repeated here.

[0069] An embodiment of the present application further provides an electronic device, comprising the radio frequency device in the above radio frequency device embodiment.

[0070] The electronic device provided in the embodiment of the present application has the same technical features as the above-mentioned radio frequency device, and therefore can achieve the same technical effects and solve the same technical problems, which will not be repeated here.

[0071] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0072] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An antenna structure, characterized in that: The antenna structure comprises: a first antenna, a second antenna, a first tuning path, a second tuning path, a third tuning path, a fourth tuning path, and a single-pole multi-throw switch; The single-pole multi-throw switch at least includes a first port, a second port, a third port, a fourth port and a fifth port; The first tuning path is electrically connected to the first port, the second tuning path is electrically connected to the second port, the third tuning path is electrically connected to the fourth port, the fourth tuning path is electrically connected to the fourth port, and the fifth port is grounded; The first antenna is electrically connected to at least one of the first tuning path, the second tuning path, the third tuning path, and the fourth tuning path, and the second antenna is electrically connected to at least one of the first tuning path, the second tuning path, the third tuning path, and the fourth tuning path, and is different from the tuning path connected to the first antenna; The single-pole multi-throw switch is used to selectively control the connection and disconnection between the first port and the fifth port, the connection and disconnection between the second port and the fifth port, the connection and disconnection between the third port and the fifth port, and the connection and disconnection between the fourth port and the fifth port.

2. The antenna structure according to claim 1, characterized in that: The first antenna is electrically connected to the first tuning path and the second tuning path, and the second antenna is electrically connected to the third tuning path and the fourth tuning path.

3. The antenna structure according to claim 2, characterized in that: The antenna structure further includes a first inductor, a second inductor, a third inductor, a fourth inductor, a fifth inductor, a sixth inductor, a first capacitor and a second capacitor; The first inductor is electrically connected between the first antenna and the first tuning path, the first capacitor is electrically connected between the first antenna and the second tuning path, a first end of the second inductor is electrically connected between the first antenna and the first inductor and the first capacitor, a second end of the second inductor is grounded, a first end of the third inductor is electrically connected between the first inductor and the first tuning path, and a second end of the third inductor is grounded; The fourth inductor is electrically connected between the second antenna and the third tuning path, the second capacitor is electrically connected between the second antenna and the fourth tuning path, the first end of the fifth inductor is electrically connected between the second antenna and the fourth inductor and the second capacitor, the second end of the fifth inductor is grounded, the first end of the sixth inductor is electrically connected between the second capacitor and the fourth tuning path, and the second end of the sixth inductor is grounded.

4. The antenna structure according to claim 1, characterized in that: The first antenna is electrically connected to the first tuning path, the second tuning path, and the third tuning path, and the second antenna is electrically connected to the fourth tuning path.

5. The antenna structure according to claim 4, characterized in that: The antenna structure further includes a seventh inductor, an eighth inductor, a ninth inductor, a tenth inductor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor; A first end of the seventh inductor is electrically connected to the first antenna, a second end of the seventh inductor is electrically connected to a first end of the third capacitor, a second end of the third capacitor is electrically connected to the first tuning path, a first end of the eighth inductor is electrically connected to a second end of the seventh inductor, a second end of the eighth inductor is electrically connected to the second tuning path, a first end of the fourth capacitor is electrically connected to a second end of the seventh inductor, a second end of the fourth capacitor is electrically connected to the third tuning path, a first end of the fifth capacitor is electrically connected between the second end of the seventh inductor and the first end of the third capacitor, and a second end of the fifth capacitor is grounded; The ninth inductor is electrically connected between the second antenna and the fourth tuning path, the first end of the tenth inductor is electrically connected between the ninth inductor and the second antenna, the second end of the tenth inductor is grounded, the first end of the sixth capacitor is electrically connected between the ninth inductor and the second antenna, and the second end of the sixth capacitor is grounded.

6. The antenna structure according to claim 1, characterized in that: The antenna structure also includes a sixth port; The sixth port is used for electrically connecting to a data bus.

7. The antenna structure according to claim 1, characterized in that: The antenna structure also includes a seventh port; The seventh port is used for electrically connecting to the identity recognition bus.

8. The antenna structure according to claim 1, characterized in that: The antenna structure also includes an eighth port; The eighth port is used for electrically connecting to a clock bus.

9. A radio frequency device, characterized in that: Comprising the antenna structure as described in any one of claims 1-8.

10. An electronic device, characterized in that: Comprising the radio frequency device as claimed in claim 9.

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