CN115529059A

CN115529059A - Radio frequency circuit, antenna device and electronic equipment

Info

Publication number: CN115529059A
Application number: CN202211146173.5A
Authority: CN
Inventors: 王亮
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-27

Abstract

The application provides a radio frequency circuit, an antenna device and electronic equipment, wherein the radio frequency circuit comprises a radio frequency transceiver, a signal regulating module, an antenna radiator and a coupler, the signal regulating module is electrically connected with the radio frequency transceiver, the antenna radiator is electrically connected with the signal regulating module, and the antenna radiator is used for receiving signals regulated by the signal regulating module and transmitting wireless signals outwards; the coupler is used for coupling the signal transmitted between the antenna radiator and the signal conditioning module 120, and coupling the signal transmitted between the signal conditioning module and the antenna radiator, and transmitting the signal to the radio frequency transceiver through the feedback port. Therefore, the radio frequency circuit can test the uplink, and the test cost is low.

Description

Radio frequency circuit, antenna device and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a radio frequency circuit, an antenna apparatus, and an electronic device.

Background

With the development of communication technology, electronic devices such as smart phones have more and more functions, and communication modes of the electronic devices are more diversified. It will be appreciated that each communication mode of the electronic device requires a corresponding antenna to support it.

The current antenna of electronic equipment is used for wireless index tests such as transmitting and receiving and the like, and the test depends on wireless comprehensive test instrument equipment, but the comprehensive test instrument equipment is expensive, and each comprehensive test instrument can only test one antenna end. This results in higher cost and lower efficiency for testing antennas for current electronic devices.

Disclosure of Invention

The application provides a radio frequency circuit, an antenna device and electronic equipment, and the radio frequency circuit can realize antenna test, so that the cost of the antenna test is lower, and the test efficiency is higher.

In a first aspect, the present application provides a radio frequency circuit comprising:

a radio frequency transceiver including a transmit port and a feedback port;

the signal adjusting module is electrically connected with the transmitting port and is used for adjusting the signal transmitted by the transmitting port;

the antenna radiating body is electrically connected with the signal regulating module and is used for receiving the signal regulated by the signal regulating module and transmitting a wireless signal outwards; and

a coupler, configured to couple and connect between the antenna radiator and the signal conditioning module 120, where the coupler is configured to couple a signal transmitted between the signal conditioning module and the antenna radiator and transmit the signal to the radio frequency transceiver through the feedback port.

In a second aspect, the present application further provides a radio frequency circuit, including:

a radio frequency transceiver including a transmit port and a receive port;

a signal conditioning module electrically connected with the transmit port and the receive port;

the antenna radiator is electrically connected with the signal adjusting module; and

and a coupler, configured to couple and connect between the antenna radiator and the signal conditioning module 120, where the coupler is configured to receive the signal transmitted by the transmitting port, transmit the signal to the signal conditioning module, and transmit the signal to a receiving port through the signal conditioning module.

In a third aspect, the present application also provides an antenna device including the radio frequency circuit as described above.

In a fourth aspect, the present application further provides an electronic device, where the electronic device includes a circuit board, and a radio frequency circuit is disposed on the circuit board, and the radio frequency circuit is the above radio frequency circuit.

According to the radio frequency circuit, the antenna device and the electronic device, the coupler of the radio frequency circuit is arranged between the antenna radiator and the signal adjusting module 120, the coupler can perform electromagnetic coupling extraction on signals flowing into the antenna radiator, the signals extracted by the coupler can be signals at the antenna radiator, and the feedback port receives the signals at the antenna radiator to test the radiation performance of an uplink of the radio frequency circuit. On the one hand, the comprehensive tester is not needed for testing the uplink, so that the testing cost can be reduced; on the other hand, this application can test the radiation parameter of antenna radiating body mouth department, and the capability test of antenna radiating body is more accurate.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic diagram of a first structure of a radio frequency circuit according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a second structure of the rf circuit according to the embodiment of the present disclosure.

Fig. 3 is a signal flow diagram of the rf circuit shown in fig. 2.

Fig. 4 is a schematic diagram of a third structure of a radio frequency circuit according to an embodiment of the present application.

Fig. 5 is a schematic diagram of a first structure of the all-in-one network shown in fig. 4.

Fig. 6 is a second structural diagram of the all-in-one network shown in fig. 4.

Fig. 7 is a schematic diagram of a fourth structure of a radio frequency circuit according to an embodiment of the present application.

Fig. 8 is a signal flow diagram of the rf circuit shown in fig. 7.

Fig. 9 is a fifth structural schematic diagram of a radio frequency circuit according to an embodiment of the present application.

Fig. 10 is a schematic diagram illustrating a first signal flow of the rf circuit shown in fig. 9.

Fig. 11 is a diagram illustrating a second signal flow of the rf circuit shown in fig. 9.

Fig. 12 is a third signal flow diagram of the rf circuit shown in fig. 9.

Fig. 13 is a schematic structural diagram of an antenna apparatus according to an embodiment of the present application.

Fig. 14 is a schematic structural diagram of a first electronic device according to an embodiment of the present application.

Fig. 15 is a second structural schematic diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solution in the embodiment of the present application will be clearly and completely described below with reference to fig. 1 to 15 in the embodiment of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a radio frequency circuit, an antenna device and electronic equipment. The antenna device may include a radio frequency circuit, and the antenna device may be disposed in the electronic apparatus, and the radio frequency circuit may enable the antenna device to implement a Wireless communication function of the electronic apparatus, for example, the radio frequency circuit may enable the antenna device to transmit a Wireless Fidelity (Wi-Fi) signal, a Global Positioning System (GPS) signal, a 3rd-Generation (3G) signal, a 4th-Generation (4G) signal, a Long Term Evolution (LTE) signal, a 5th-Generation (5G) signal, a Near Field Communication (NFC) signal, an Ultra Wide Band (UWB) signal, a bluetooth signal, and the like.

Referring to fig. 1, fig. 1 is a first structural schematic diagram of a radio frequency circuit 100 according to an embodiment of the present disclosure. The radio frequency circuit 100 may include a radio frequency transceiver 110, a signal conditioning module 120, an antenna radiator 130, and a coupler 140.

The rf transceiver 110 may transmit the excitation signal, for example, the rf transceiver 110 may provide the signal to the signal conditioning module 120 and the antenna radiator 130, and the rf transceiver 110 may also receive the signal transmitted by the antenna radiator 130 and the signal conditioning module 120. The rf transceiver 110 may include one or more (two or more) transmitting ports 111 and one or more (two or more) receiving ports 112, so that the rf transceiver 110 can provide TX signals to the outside and receive RX signals transmitted by the antenna radiator 130. It is understood that the rf transceiver 110 may also include a feedback port 113, the feedback port 113 may receive signals transmitted by some modules in the rf circuit 100, and the rf transceiver 110 may determine the radiation performance of the rf circuit 100 according to the information of the signals received by the feedback port 113.

The signal conditioning module 120 may be in direct or indirect electrical connection with the radio frequency transceiver 110. For example, the signal conditioning module 120 may be electrically connected to one or more (two or more) transmit ports 111 of the rf transceiver 110 directly or indirectly, and the signal conditioning module 120 may condition the TX signals transmitted by the transmit ports 111. For another example, the signal conditioning module 120 may also be electrically connected to one or more (two or more) receiving ports 112 of the rf transceiver 110 directly or indirectly, and the signal conditioning module 120 may also condition a received signal (e.g., an RX signal transmitted by the antenna radiator 130) and transmit the conditioned signal back to the rf transceiver 110 through the receiving ports 112.

The signal conditioning module 120 may, but is not limited to, amplify, filter, combine, split, dessicate, etc., the received signal. For example, please refer to fig. 2 in combination with fig. 1, and fig. 2 is a schematic diagram of a second structure of the rf circuit 100 according to an embodiment of the present disclosure. The signal conditioning module 120 may include a first power amplifier 121, a second power amplifier 122, and a filter 123. The first power amplifier 121 is, for example, but not limited to, a multi-mode power amplifier; the second power amplifier 122 is, for example, but not limited to, a low noise power amplifier and filter 123. One end of the first power amplifier 121 may be directly or indirectly electrically connected to the transmitting port 111 of the rf transceiver 110, and the other end of the first power amplifier 121 may be directly or indirectly connected to the antenna radiator 130, so that a transmitting link may be formed among the transmitting port 111 of the rf transceiver 110, the first power amplifier 121, and the antenna radiator 130, and the rf transceiver 110 may amplify a TX signal provided by the rf transceiver 110, so that the antenna radiator 130 may transmit a wireless signal to the outside with better radiation performance. One end of the filter 123 may be directly or indirectly electrically connected to the antenna radiator 130, the other end of the filter 123 may be directly or indirectly electrically connected to one end of the second power amplifier 122, and the other end of the second power amplifier 122 may be directly or indirectly electrically connected to the receive port 112 of the rf transceiver 110, so that a receive link may be formed among the antenna radiator 130, the filter 123, the second power amplifier 122, and the receive port 112 of the rf transceiver 110, the filter 123 may filter a signal transmitted by the antenna radiator 130, and the second power amplifier 122 may amplify the filtered signal. It should be noted that, the above is only an exemplary example of the signal conditioning module 120, and the specific structure of the signal conditioning module 120 is not limited thereto, and all structures that can achieve conditioning of the received signal are within the protection scope of the signal conditioning module 120 in the embodiment of the present application.

The antenna radiator 130 may be directly or indirectly electrically connected to the signal conditioning module 120, and the antenna radiator 130 may receive the conditioned signal transmitted by the signal conditioning module 120, so as to radiate the signal outwards under the action of the conditioned signal; the antenna radiator 130 may also transmit the received signal to the signal conditioning module 120, so that the signal conditioning module 120 processes the received signal and may transmit the processed signal to the rf transceiver 110.

It is understood that the antenna radiator 130 may be a structure that can radiate a wireless signal outward and can receive the wireless signal. The antenna radiator 130 may be, but is not limited to, a monopole antenna radiator, a dipole antenna radiator, or a loop antenna radiator, and the specific structure of the antenna radiator 130 is not limited in this embodiment.

The coupler 140 may be disposed between the antenna radiator 130 and the signal conditioning module 120, and the coupler 140 may be coupled between the antenna radiator 130 and the signal conditioning module 120. For example, when a signal link (e.g., without limitation, a transmit signal link) is formed between the signal conditioning module 120 and the antenna radiator 130, the coupler 140 may be coupled to the signal link, and the coupler 140 may couple signals transmitted between the signal conditioning module 120 and the antenna radiator 130. Also, the coupler 140 may be directly or indirectly electrically connected to the feedback port 113 of the rf transceiver 110 under certain conditions, so that the coupler 140 may couple signals transmitted between the signal conditioning module 120 and the antenna radiator 130 and may transmit the signals to the rf transceiver 110 through the feedback port 113.

For example, referring to fig. 3, fig. 3 is a signal flow diagram of the rf circuit 100 shown in fig. 2. The reflective port of the radio frequency transceiver 110 may provide a TX signal, which may flow to the signal conditioning module 120, for example, may pass through the first power amplifier 121, and then the TX signal may continue to flow from the signal conditioning module 120, for example, the first power amplifier 121, to the antenna radiator 130 to form a TX path, such that the antenna radiator 130 radiates the signal outward by the TX signal. In this process, the TX signal transmitted by the signal conditioning module 120 to the antenna radiator 130 may be electromagnetically coupled by the coupler 140, the coupler 140 may transmit the electromagnetically coupled TX signal to the feedback port 113, and the radio frequency transceiver 110 may perform a de-instrumentation test on the performance of an uplink (Up Link, UL for short) of the radio frequency circuit 100 according to the parameter of the TX signal received by the feedback port 113.

It is understood that the link between the coupler 140 and the signal conditioning module 120 and the antenna radiator 130 may not have a physical electrical connection relationship, in other words, the coupler 140 may not have an electrical connection relationship with the signal conditioning module 120 and the antenna radiator 130 through a medium such as a wire. The coupler 140 may extract (electromagnetically couple) a small portion of the signal from the main link where the TX signal flows between the signal conditioning module 120 and the antenna radiator 130, and analyze the radiation performance at the antenna radiator 130 according to the performance parameter of the small portion of the signal, so as to implement the performance test of the radio frequency circuit 100 on the UL link (transmission link).

In the radio frequency circuit 100 according to the embodiment of the application, the coupler 140 is disposed between the antenna radiator 130 and the signal conditioning module 120, so that the coupler 140 may perform electromagnetic coupling extraction on a signal flowing into the antenna radiator 130, the signal extracted by the coupler 140 may be a signal at the antenna radiator 130, and the feedback port 113 receives the signal at the antenna radiator 130, so as to implement testing on the radiation performance of an uplink. On the one hand, the test on the uplink does not need to use an integrated tester, so that the test cost can be reduced; on the other hand, the radiation parameters at the opening of the antenna radiator 130 can be tested, and the performance test of the antenna radiator 130 is more accurate.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a third structure of the rf circuit 100 according to the embodiment of the present disclosure. The radio frequency circuit 100 of the embodiment of the application can realize the radiation performance test of a plurality of radiators. The rf circuit 100 may include a plurality of antenna radiators 130, a plurality of couplers 140, and an all-in-one network 150.

The plurality of antenna radiators 130 may be disposed at intervals. Each antenna radiator 130 may be directly or indirectly electrically connected to the signal conditioning module 120, so that each antenna radiator 130 may receive the signal conditioned by the signal conditioning module 120 and emit a wireless signal to the outside, and each antenna radiator 130 may transmit the received wireless signal to the signal conditioning module 120 for conditioning.

The number of the plurality of couplers 140 may be equal to or greater than the number of the plurality of antenna radiators 130, and each coupler 140 may be disposed between one antenna radiator 130 and the signal conditioning module 120, so that each coupler 140 may be coupled with one antenna radiator 130 to couple signals transmitted between the signal conditioning module 120 and the antenna radiator 130 into the coupler 140.

The all-in-one network 150 may include an input terminal and a plurality of output terminals, each of the output terminals may be electrically connected to one of the couplers 140, the input terminal may be electrically connected to the transmitting port 111 of the rf transceiver module, or the input terminal may be electrically connected to the feedback port 113 of the rf transceiver module. The input end of the all-in-one network 150 may combine the signals transmitted by the multiple output ends and transmit the combined signals to the feedback port 113 or the transmitting port 111; the input may also transmit signals received by the feedback port 113 or the transmit port 111 to one or more (two or more) outputs, such that one or more outputs may transmit the signals to the matched coupler 140.

It is understood that, as shown in fig. 4, the signal conditioning module 120 may further include a duplexer 124, and the duplexer 124 may isolate the transmitting signal from the receiving signal to ensure that the receiving signal and the transmitting signal can work properly at the same time. The duplexer 124 can also isolate the signals of different transmission channels to ensure that the signals of each channel can work properly.

It is to be understood that, as shown in fig. 4, the signal conditioning module 120 may further include an antenna switch 125, where the antenna switch 125 may be electrically connected to the duplexer 124 directly or indirectly, and the antenna switch 125 may conduct one or more paths of the duplexer 124 to one or more antenna radiators 130. In other words, the antenna switch 125 can select one or several (including all) of the antenna radiators 130 to be conductive with the duplexer 124.

Taking the example of the radio frequency circuit 100 testing the uplink, the TX signal transmitted by the transmitting port 111 of the radio frequency transceiver 110 may pass through the first power amplifier 121, the duplexer 124, and the antenna switch 125 of the signal conditioning module 120, and then the signal is radiated outward by one or several radiators, so that one or several TX paths may be formed. At this time, the coupler 140 matched to the one or several radiators can couple and transmit signals between the antenna switch 125 and the antenna radiator 130 to the all-in-one network 150, and the all-in-one network 150 can transmit a plurality of signals to the feedback port 113 of the rf transceiver 110 through its input end, so that the rf transceiver 110 can implement uplink testing on the plurality of antenna radiators 130 according to the received feedback signals.

It is understood that the all-in-one network 150 may perform the radiation performance test on the multiple antenna radiators 130 by using the serial test channel polling method, for example, the radio frequency transceiver 110 may provide the TX signals to the multiple TX paths one by using the test channel polling method, so as to test the uplinks of the different antenna radiators 130 one by one. Of course, the all-in-one network 150 may also test all TX paths in parallel and transmit simultaneously, and the different TX signals are distinguished by cyclic shift or flag bits to perform the radiation performance test on the multiple antenna radiators 130.

In order to enable the multiple TX signals transmitted by the transmitting port 111 of the radio frequency transceiver 110 to be transmitted through the input end of the all-in-one network 150, as shown in fig. 4, the radio frequency circuit 100 may further include a combiner 160, one end of the combiner 160 may be directly or indirectly electrically connected to the input end of the all-in-one network 150, and the other end of the combiner 160 may be directly or indirectly electrically connected to the transmitting port 111 or the feedback port 113 of the radio frequency transceiver 110. Therefore, the transmitting port 111 may combine the multiple TX signals by the combiner 160 and transmit the combined TX signals to the all-in-one network 150, and the all-in-one network 150 may also combine the coupled multiple TX signals by the combiner 160 and transmit the combined TX signals to the feedback port, so that the rf transceiver 110 may receive the feedback signals.

It is understood that the all-in-one network 150 according to the embodiment of the present disclosure may be a network structure having a combining function and a splitting function, for example, please refer to fig. 5, fig. 5 is a schematic diagram illustrating a first structure of the all-in-one network 150 shown in fig. 4, and the all-in-one network 150 may include a plurality of output terminals S1 to Sn and a Co input terminal. For example, referring to fig. 6, fig. 6 is a schematic diagram illustrating a second structure of the all-in-one network 150 shown in fig. 4, and the all-in-one network 150 may include a plurality of strip-shaped output terminals S1 to Sn and a Co input terminal formed by serial connection, parallel connection, and the like. Therefore, the all-in-one network 150 of the embodiment of the present application may adopt a combining network in the form of a stripline, or may adopt a form of a device IC; the all-in-one network 150 can be integrated in a single board, or can be buckled on the single board to realize the same function. The embodiment of the present application does not limit the specific structure of the all-in-one network 150.

The radio frequency circuit 100 of the embodiment of the application is provided with the all-in-one network 150, which can realize uplink test of multiple TX signals, that is, can improve the test efficiency of multiple antenna radiators 130, and can reduce the test cost of multiple antenna radiators 130; meanwhile, the rf circuit 100 includes the combiner 160, and the combiner 160 may simplify the structure of the all-in-one network 150, thereby reducing the production cost of the rf circuit 100.

Referring to fig. 7 and fig. 8, fig. 7 is a fourth structural schematic diagram of the rf circuit 100 according to the embodiment of the present disclosure, and fig. 8 is a signal flow schematic diagram of the rf circuit 100 shown in fig. 7. The radio frequency circuit 100 of the embodiment of the present application may also perform a downlink test.

For example, the transmitting port 111 of the rf transceiver 110 may transmit the TX signal to the coupler 140, and the coupler 140 may receive the signal transmitted by the transmitting port 111 and transmit the received signal to the signal conditioning module 120, and transmit the received signal to the receiving port 112 of the rf transceiver 110 through the signal conditioning module 120. It is understood that in this process, the TX signal transmitted by the transmitting port 111 of the rf transceiver 110 may be directly transmitted to one or more (two or more) couplers 140 through the combiner 160 and the all-in-one network 150 without passing through the relevant components (e.g., the first power amplifier 121 and the duplexer 124) electrically connected to the transmitting port 111 in the signal conditioning module 120, and may be transmitted to the receiving port 112 of the rf transceiver 110 through the components electrically connected to the receiving port 112 in the signal conditioning module 120.

It is understood that, as shown in fig. 7, the signal conditioning module 120 of the rf circuit 100 may further include a component directly or indirectly electrically connected to the receiving port 112 of the rf transceiver 110, such as, but not limited to, a filter 123 and a second power amplifier 122, the second power amplifier 122 may be directly or indirectly electrically connected to the receiving port 112 of the rf transceiver 110, the filter 123 may be directly or indirectly electrically connected to the second power amplifier 122, and the antenna switch 125 may be directly and indirectly electrically connected to the filter 123. The TX signal transmitted by the transmitting port 111 of the rf transceiver 110 may be transmitted to the receiving port 112 of the rf transceiver 110 via the combiner 160, the all-in-one network 150, the coupler 140, the antenna switch 125, the filter 123 and the second power amplifier 122. Thus, the radio frequency circuit 100 may test a Downlink (DL) of the radio frequency circuit 100.

It is understood that, when the radio frequency circuit 100 of the embodiment of the present application does not perform the downlink test, the antenna radiator 130 may transmit the received RX signal to the signal conditioning module 120, such as the antenna switch 125, the filter 123, the second power amplifier 122, and then to the receiving port 112 of the radio frequency transceiver 110, thereby forming an RX path.

It should be noted that the above is only an exemplary description of the radio frequency circuit 100 according to the embodiment of the present application for testing the downlink, and it should be understood that, depending on the structure of the radio frequency circuit 100, the radio frequency circuit 100 also has a different signal flow during the downlink test, and the radio frequency circuit 100 is not specifically limited in the embodiment of the present application for the signal flow during the downlink test.

Referring to fig. 7 again, the rf circuit 100 of the embodiment of the present application may further include a first switch 170.

The first switch 170 may include a first terminal a1, a second terminal a2, and a third terminal a3. The first end a1 may be electrically connected with the transmission port 111 of the radio frequency transceiver 110 directly or indirectly; the second end a2 may be electrically connected to the signal conditioning module 120 directly or indirectly, for example, the second end a2 may be electrically connected to a component of the signal conditioning module 120 electrically connected to the radio frequency transceiver 110; the third terminal a3 may be directly or indirectly electrically connected to the coupler 140, for example, the third terminal a3 may be directly or indirectly electrically connected to the all-in-one network 150 through the combiner 160, and electrically connected to one or more (two or more) couplers 140 through the all-in-one network 150.

It is understood that when the first terminal a1 and the second terminal a2 of the first switch 170 are turned on, the transmitting port 111 of the rf transceiver 110 may be electrically connected to the signal conditioning module 120 without being directly electrically connected to the coupler 140 through the combiner 160 and the all-in-one network 150; the rf transceiver 110 may transmit a TX signal to the signal conditioning module 120 through the transmission port 111 and transmit the signal to the outside through the antenna radiator 130; the coupler 140 may couple a TX signal transmitted between the signal conditioning module 120, e.g., the antenna switch 125, and the antenna radiator 130, and transmit the TX signal to the radio frequency transceiver 110 through the feedback port 113.

For example, a TX signal transmitted by the transmitting port 111 of the rf transceiver 110 may be transmitted to the first power amplifier 121, the duplexer 124, the antenna switch 125 and the antenna radiator 130 through the first end a1 and the second end a2 of the first switch 170, and the coupler 140 may couple signals between the antenna switch 125 and the antenna radiator 130 to the multi-in-one network 150 and transmit the signals to the feedback port 113 of the rf transceiver 110 through the combiner 160, so as to implement the uplink test.

It can be understood that when the first terminal a1 and the third terminal a3 of the first switch 170 are conductive, the transmission port 111 of the radio frequency transceiver 110 may be electrically connected with the coupler 140 and not electrically connected with the component of the signal conditioning module 120 that is electrically connected with the transmission port 111; the coupler 140 may receive the signal transmitted by the transmitting port 111 and transmit the signal to a part of the components of the signal conditioning module 120 electrically connected to the receiving port 112 of the rf transceiver 110, and transmit the signal to the receiving port 112 through the component of the signal conditioning module 120. For example, the TX signal transmitted by the transmitting port 111 of the rf transceiver 110 may be transmitted to the combiner 160, the all-in-one network 150, one or more (two or more) couplers 140, the antenna switch 125, the filter 123, and the second power amplifier 122 through the first end a1 and the third end a3 of the first switch 170, and then transmitted to the receiving port 112 of the rf transceiver 110, so as to implement the downlink test.

The radio frequency circuit 100 of the embodiment of the application can realize the test of the uplink and the downlink under the switching of the first switch 170, the function of the radio frequency circuit 100 is more comprehensive, and the test cost of the radio frequency circuit 100 is lower.

Please refer to fig. 9, wherein fig. 9 is a schematic diagram of a fifth structure of the rf circuit 100 according to an embodiment of the present disclosure. The radio frequency circuit 100 may also include a calibration receptacle 180 and a second switch 190.

Calibration receptacle 180 may be electrically connected, directly or indirectly, to an external device, which may be an external calibration device or an external device to be tested. The second switch 190 may include a fourth terminal b1, a fifth terminal b2, and a sixth terminal b3; the fourth terminal b1 may be directly or indirectly electrically connected to the calibration socket 180; the fifth terminal b2 may be directly or indirectly electrically connected to the transmitting port 111 of the radio frequency transceiver 110, for example, the fifth terminal b2 may be directly or indirectly electrically connected to the third terminal a3 of the first switch 170; the sixth end b3 may be electrically connected with the feedback port 113 of the radio frequency transceiver 110 directly or indirectly.

When the fourth terminal b1 and the fifth terminal b2 of the second switch 190 are turned on and the fifth terminal b2 can receive the TX signal transmitted by the transmission port 111 of the radio frequency transceiver 110, for example, the first terminal a1 and the third terminal a3 of the first switch 170 are turned on and the fourth terminal b1 and the fifth terminal b2 of the second switch 190 are turned on, the calibration socket 180 may transmit the TX signal transmitted by the transmission port 111 to the external device, so that the radio frequency circuit 100 may implement matching with the external device, and may implement calibration and testing of the UL link. When the sixth end b3 is connected to the feedback port 113 of the rf transceiver 110, the calibration socket 180 and the feedback port 113 may receive signals transmitted by an external device, so that calibration and testing of the DL link may be implemented.

It is understood that, when the external device is an external calibration device, after the UL link and the DL link of the radio frequency circuit 100 according to the embodiment of the present application are calibrated by using the above method, the radio frequency circuit 100 may store the calibrated TX gain and RX gain. Subsequently, cross verification can be performed by plugging other single boards (external devices to be tested) into the calibration socket 180, or calibration comprehensive testing can be performed on the receiving and transmitting links of the external single boards (external devices to be tested), so that testing can be performed on other plug-in single boards (external devices to be tested) without using a comprehensive tester.

The radio frequency circuit 100 of the embodiment of the application can be externally hung with an external calibration device or an external device to be tested, the radio frequency circuit 100 can test the UL link and the DL link of the radio frequency circuit 100, can also calibrate the UL link and the DL link, and can also test the UL link and the DL link of other external devices to be tested, the radio frequency circuit 100 has more comprehensive functions, and the test cost is lower.

Referring to fig. 10 based on the rf circuit 100 shown in fig. 9, fig. 10 is a schematic diagram illustrating a first signal flow of the rf circuit 100 shown in fig. 9. The following describes the radio frequency circuit 100 in detail for testing the UL link:

as shown in fig. 9 and 10, when the rf circuit 100 performs the UL link test, firstly, the rf circuit 100 may be calibrated, for example, the calibration of the UL link of the rf circuit 100 may be implemented by an external calibration device, and the calibration operation may be performed on the TX signal transmitted by the transmitting port 111 of the rf transceiver 110 to obtain the gain value G of the TX signal transmitted by the transmitting port 111 _FWD (ii) a Then, signals or modulated signals (according to the test requirement) of the frequency band to be tested of the rf transceiver 110 may enter the first power amplifier 121, the duplexer 124, and the antenna switch 125 through the first switch 170, and the antenna radiator 130 is sent out; in this process, the coupler 140 may couple and transmit the TX signal transmitted from the antenna switch 125 to the antenna radiator 130 to the multi-in-one network 150, and transmit the TX signal to the feedback port 113 through the combiner 160 and the second switch 190, and the rf transceiver 110 may obtain the power value P of the TX signal through the feedback port 113 _FWD The rf transceiver 110 may also obtain the attenuation ATT of the link between the rf transceiver 110 and the feedback port 113 through the feedback port 113 _FB Thus, the actual power of the antenna radiator 130 can be detected according to the following formula:

P＝P _FWD -G _FWD +ATT _FB

p is the actual power at the antenna radiator 130; p _FWD The power value obtained by the rf transceiver 110 through the feedback port 113; ATT (automatic train transfer) system _FB An attenuation value for the link between the radio frequency transceiver 110 and the feedback port 113 (if there is no attenuation value, the attenuation value is zero); g _FWD For calibrationIn operation the gain value of the signal transmitted by the transmit port 111.

Referring to fig. 11 based on the rf circuit 100 shown in fig. 9, fig. 11 is a schematic diagram illustrating a second signal flow of the rf circuit 100 shown in fig. 9. The following describes the test of the DL link performed by the rf circuit 100 in detail:

as shown in fig. 9 and fig. 11, when the rf circuit 100 performs the DL link test, firstly, the rf circuit 100 may be subjected to a calibration test, for example, calibration of the DL link of the rf circuit 100 may be achieved by an external calibration device, and calibration operation may be performed on the RX signal received by the receiving port 112 of the rf transceiver 110 to obtain the gain value G of the RX signal received by the receiving port 112 _rx (ii) a Then, the frequency band signal or the modulated signal to be tested (according to the test requirement) of the rf transceiver 110 passes through the first switch 170, the second switch 190, the combiner 160, the all-in-one network 150, the coupler 140, the antenna switch 125, the filter 123, the second power amplifier 122, and is transmitted to the rf transceiver 110 through the receiving port 112, and the rf transceiver 110 can obtain the power value P of the RX signal through the receiving port 112 _rx1 Then, the digital back-off value of TX internal to the slave rf transceiver 110 may be adjusted to be close to 5%, and the back-off a at this time is recorded, which indicates that the power at this time is close to the actual sensitivity level. Accordingly, the sensitivity parameter of the antenna radiator 130 can be detected according to the following formula:

Sensitivity＝P _rx1 -G _rx -A

sensitivity is a Sensitivity parameter of the antenna radiator 130; p is _rx1 A power value obtained for the rf transceiver 110 through the receiving port 112; g _rx A gain value for a signal received at the receive port 112 during calibration operations; a is the back-off of the transmission parameters of the internal transmission link of the rf transceiver 110.

The rf circuit 100 according to the embodiment of the application can calculate the actual power of the antenna radiator 130 and the sensitivity of the antenna radiator 130 according to the above formula, and since the parameters are collected from the antenna radiator 130, the calculation of the actual power and the sensitivity is more accurate.

Referring to fig. 12 based on the rf circuit 100 shown in fig. 9, fig. 12 is a schematic diagram illustrating a third signal flow of the rf circuit 100 shown in fig. 9. The implementation of the meter function by the rf circuit 100 is explained in detail below:

as shown in fig. 9 and 12, the calibration socket 180 may be externally connected to an external device, and the transmission port 111 of the radio frequency transceiver 110 may externally transmit a TX signal, pass through the first switch 170, the second switch 190, the combiner 160, the calibration socket 180, and pass through the external device, so that calibration or testing of a TX link of the external device may be achieved.

The external device may transmit a TX signal through the calibration jack 180, the combiner 160, the second switch 190, and through the rf transceiver 110 via the feedback port 113 of the rf transceiver 110, so that calibration or testing of the RX link of the external device may be achieved.

Referring to fig. 9 again, each coupler 140 of the rf circuit 100 may include an electrical connection terminal c1, a first coupling terminal c2, and a second coupling terminal c3.

The first coupling terminal c2 and the second coupling terminal c3 may couple signals transmitted between the signal conditioning module 120 and the antenna radiator 130. The electrical connection terminal c1 can be directly or indirectly electrically connected to the feedback port 113 or the emission port 111, and the electrical connection terminal c1 is used for conducting the first coupling terminal c2 or the second coupling terminal c3.

It is understood that, as shown in fig. 10, when the electrical connection terminal c1 of the coupler 140 is electrically connected to the feedback port 113 directly or indirectly, the first coupling terminal c2 or the second coupling terminal c3 can couple the TX signal between the antenna switch 125 and the antenna radiator 130 into the coupler 140, and can be transmitted to the multi-in-one network 150, the combiner 160, the second switch 190 through the electrical connection terminal c1 of the coupler 140, and can flow into the rf transceiver 110 through the feedback port 113 of the rf transceiver 110.

It is understood that, as shown in fig. 11, when the electrical connection terminal c1 of the coupler 140 is electrically connected to the transmission port 111 of the rf transceiver 110 directly or indirectly, the TX signal transmitted by the transmission port 111 of the rf transceiver 110 may be transmitted to the electrical connection terminal c1 of the coupler 140 through the first switch 170, the second switch 190, the combiner 160, and the all-in-one network 150, and the TX signal may be coupled and transmitted to the antenna switch 125 through the first coupling terminal c2 or the second coupling terminal c3 of the coupler 140, and transmitted to the receiving port 112 of the rf transceiver 110 through the antenna switch 125.

When the first coupling end c2 is conducted with the electrical connection end c1, the forward power REV in the UL link or the DL link can be obtained _n (ii) a When the second coupling end c3 is conducted with the electrical connection end c1, the reflected power FWD in the UL link or the DL link can be obtained _n The rf circuit 100 may test the standing wave ratio of the antenna radiator 130 according to the following formula:

wherein the VSWR _n Standing wave ratio for the antenna radiator 130; REV _n When the electrical connection terminal c1 is conducted with the first coupling terminal c2, the rf transceiver 110 obtains the front power of the signal link; FWD _n When the electrical connection terminal c1 and the second coupling terminal c3 are conducted, the rf transceiver 110 obtains the reflected power of the signal link.

In the radio frequency circuit 100 of the embodiment of the application, the radio frequency circuit 100 can test the standing-wave ratio of the antenna radiator 130 in real time, and can adjust the antenna matching combination in real time to ensure that the transmitted signal of the antenna is optimal; in addition, the radio frequency circuit 100 according to the embodiment of the present application may implement a test on the transmission power of the antenna radiator 130 of the UL link, a test on the receiving sensitivity of the antenna radiator 130 of the DL link, a test on the standing-wave ratio of the antenna radiator 130, and a test on an external device; the rf circuit 100 has a comprehensive function and a low test cost.

It should be noted that the foregoing is only an exemplary illustration of the rf circuit 100 according to the embodiment of the present application. The specific structure of the rf circuit 100 is not limited thereto. For example, relevant components to implement DL link testing may be included without other components; as another example, relevant components to implement the standing wave ratio test may be included without other components; for another example, the external device may be included to perform calibration and testing without including other components. The embodiment of the present application does not limit the specific structure of the rf circuit 100.

In some embodiments, the rf circuit 100 may include an rf transceiver 110, a signal conditioning module 120, an antenna radiator 130, and a coupler 140. The rf transceiver 110 may include a transmitting port 111 and a receiving port 112, the signal conditioning module 120 may be electrically connected to the transmitting port 111 and the receiving port 112, the antenna radiator 130 may be electrically connected to the signal conditioning module 120, the coupler 140 may be coupled between the antenna radiator 130 and the signal conditioning module 120, and the coupler 140 may receive a signal transmitted by the transmitting port 111, transmit the signal to the signal conditioning module 120, and transmit the signal to the receiving port 112 through the signal conditioning module 120, so as to implement a test on a DL link of the rf circuit 100.

It is understood that the rf transceiver 110 may further include the feedback port 113, and the rf circuit 100 may further include the first switch 170. The first switch 170 includes a first terminal a1, a second terminal a2, and a third terminal a3, the first terminal a1 may be electrically connected to the transmission port 111, the second terminal a2 may be electrically connected to the signal conditioning module 120, and the third terminal a3 may be electrically connected to the coupler 140. When the first end a1 and the second end a2 are connected, the transmitting port 111 may be electrically connected to the signal conditioning module 120, and the coupler 140 may couple signals transmitted between the signal conditioning module 120 and the antenna radiator 130 and transmit the signals to the rf transceiver 110 through the feedback port 113, so as to implement a UL link test. When the first terminal a1 and the third terminal a3 are conducted, the coupler 140 may receive the signal transmitted by the transmitting port 111, transmit the signal to the signal conditioning module 120, and transmit the signal to the receiving port 112 through the signal conditioning module 120, so as to implement the test of the DL link.

It should be noted that, the structure of the radio frequency circuit 100 in the foregoing embodiment may refer to the structure in the foregoing embodiment, and is not described in detail herein.

Based on the structure of the rf circuit 100, please refer to fig. 13, and fig. 13 is a schematic structural diagram of an antenna device 200 according to an embodiment of the present disclosure. The antenna device 200 of the present embodiment may include the rf circuit 100.

It is understood that the antenna device 200 may include other structures besides the rf circuit 100, such as, but not limited to, a carrier board carrying the rf circuit 100. The structure of the antenna device 200 is not limited in the embodiment of the present application.

Based on the structures of the radio frequency circuit 100 and the antenna device 200, please refer to fig. 14, where fig. 14 is a first structural schematic diagram of the electronic device 10 according to an embodiment of the present application. The electronic device 10 may further comprise an antenna arrangement 200, a memory 300 and a processor 400.

The antenna device 200 may include the above-mentioned radio frequency circuit 100 to transmit a wireless signal under the control of the radio frequency circuit 100. The antenna device 200 may be disposed in the interior, the middle frame, the rear case, and the like of the electronic device 10. The antenna device 200 may be electrically connected with the processor 400, and the radio frequency transceiver 110, such as the radio frequency circuit 100 of the antenna device 200, may be electrically connected with the processor 400 to receive control of the processor 400.

The memory 300 may be used to store applications and data. The memory 300 stores applications containing executable program code. The application programs may constitute various functional modules. The processor 400 executes various functional applications and data processing by running the application programs stored in the memory 300.

The processor 400 may be a control center of the electronic device 10. The processor 400 connects various parts of the entire electronic device 10 using various interfaces and lines, performs various functions of the electronic device 10 and processes data by running or executing application programs stored in the memory 300 and calling up data stored in the memory 300, thereby monitoring the electronic device 10 as a whole.

Please refer to fig. 15, where fig. 15 is a second structural schematic diagram of the electronic device 10 according to an embodiment of the present disclosure. The electronic device 10 may be a smart phone, a tablet computer, or other devices, and may also be a game device, an Augmented Reality (AR) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices. The electronic device 10 of the embodiment of the present application may further include a display screen 500, a middle frame 600, a circuit board 700, a battery 800, a rear case 900, and the like.

The display screen 500 may be used to display information such as images, text, and the like. The display screen 500 may be an Organic Light-Emitting Diode (OLED) display screen. The display screen 500 may be mounted on the middle frame 600 and coupled to the rear cover through the middle frame 600 to form a display surface of the electronic device 10. The display screen 500 serves as a front case of the electronic device 10, and forms a housing of the electronic device 10 together with a rear cover for accommodating other electronic components of the electronic device 10.

The middle frame 600 may provide support for the electronics or electronic devices in the electronic device 10. The middle frame 600 may form a receiving space, and electronic components and electronic devices in the electronic device 10 may be mounted and fixed in the receiving space.

The circuit board 700 may be mounted on the middle frame 600. The circuit board 700 may be a motherboard of the electronic device 10. One, two or more of a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an environmental sensor, a gyroscope, and an electronic device such as the processor 400 may be integrated on the circuit board 700. It is understood that the rf circuit 100 in the foregoing embodiments may be disposed on the circuit board 700, so as to control the rf circuit 100 through the processor 400 on the circuit board 700.

The battery 800 may be mounted in the middle frame 600. Meanwhile, the battery 800 is electrically connected to the circuit board 700 to enable the battery 800 to power the electronic device 10. Power management circuitry may be disposed on circuit board 700. The power management circuitry is used to distribute the voltage provided by battery 800 to the various electronic devices in electronic apparatus 10.

The rear case 900 may be connected with the middle frame 600. The rear case 900 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 600 and the display screen 500, so as to protect the electronic devices and functional components of the electronic device 10.

In addition, the electronic device 10 may further include a camera module, a bluetooth module, etc., which will not be described herein.

In the description of the present application, it is to be understood that terms such as "first," "second," and the like are used solely for distinguishing between similar elements and not necessarily for indicating or implying relative importance or implicitly indicating the number of technical features indicated.

The radio frequency circuit, the antenna device and the electronic device provided in the embodiments of the present application are described in detail above, and the principles and embodiments of the present invention are explained in detail herein by applying specific examples, and the above description of the embodiments is only used to help understanding the present invention. Meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A radio frequency circuit, comprising:

a radio frequency transceiver including a transmit port and a feedback port;

2. The rf circuit of claim 1, wherein the rf circuit comprises a plurality of antenna radiators and a plurality of couplers, each coupler for coupling with one of the antenna radiators; the radio frequency circuit further includes:

the all-in-one network comprises an input end and a plurality of output ends, each output end is electrically connected with one coupler, and the input end is electrically connected with the transmitting port or the feedback port.

3. The radio frequency circuit of claim 2, further comprising:

and one end of the combiner is electrically connected with the input end of the all-in-one network, and the other end of the combiner is electrically connected with the transmitting port or the feedback port.

4. The radio frequency circuit of claim 1, wherein the radio frequency transceiver further comprises a receive port; the signal conditioning module is electrically connected with the receiving port;

the coupler is also used for receiving the signal transmitted by the transmitting port, transmitting the signal to the signal conditioning module and transmitting the signal to the receiving port through the signal conditioning module.

5. The radio frequency circuit of claim 4, further comprising:

a first switch including a first terminal, a second terminal, and a third terminal, the first terminal being electrically connected to the transmit port, the second terminal being electrically connected to the signal conditioning module, and the third terminal being electrically connected to the coupler; wherein, the first and the second end of the pipe are connected with each other,

when the first end is conducted with the second end, the transmitting port is electrically connected with the signal conditioning module, and the coupler is used for coupling signals transmitted between the signal conditioning module and the antenna radiator and transmitting the signals to the radio frequency transceiver through the feedback port;

when the first terminal and the third terminal are conducted, the coupler is used for receiving the signal transmitted by the transmitting port, transmitting the signal to the signal conditioning module, and transmitting the signal to the receiving port through the signal conditioning module.

6. The radio frequency circuit of claim 5, further comprising:

a calibration socket for electrically connecting to an external device;

the second switch comprises a fourth end, a fifth end and a sixth end, the fourth end is electrically connected with the calibration socket, the fifth end is electrically connected with the third end, and the sixth end is electrically connected with the feedback port;

when the first terminal is conducted with the third terminal and the fourth terminal is conducted with the fifth terminal, the calibration socket is used for transmitting the signal transmitted by the transmitting port to the external device;

when the sixth terminal is conducted with the feedback port, the calibration socket and the feedback port are used for receiving signals transmitted by the external device.

7. The radio frequency circuit according to claim 1, wherein the coupler comprises an electrical connection terminal, a first coupling terminal, and a second coupling terminal; the first coupling end and the second coupling end are used for coupling signals transmitted between the signal adjusting module and the antenna radiator, the electric connection end is used for being electrically connected to the feedback port, and the electric connection end is used for conducting the first coupling end or the second coupling end.

8. The RF circuit of claim 7, wherein the RF transceiver is configured to obtain the front power of the signal link when the electrical connection terminal is electrically connected to the first coupling terminal; when the electric connection end is conducted with the second coupling end, the radio frequency transceiver is used for acquiring the reflected power of the signal link; the radio frequency circuit tests the standing-wave ratio of the antenna radiator according to the following formula:

wherein the VSWR _n The standing wave ratio of the antenna radiator is obtained; REVn isA forward power of a signal link acquired by the radio frequency transceiver; FWDn is the reflected power of the signal link acquired by the radio frequency transceiver.

9. The rf circuit according to any one of claims 1 to 8, wherein the rf circuit is further configured to perform a calibration operation on the signal transmitted by the transmit port and obtain a gain value of the signal transmitted by the transmit port; the radio frequency circuit tests the actual power of the antenna radiator according to the following formula:

P＝P _FWD -G _FWD +ATT _FB

wherein, P is the actual power at the antenna radiator; p is _FWD Obtaining a power value for the radio frequency transceiver through the feedback port; ATT (automatic transfer terminal) _FB An attenuation value for a link between the radio frequency transceiver and the feedback port; g _FWD To calibrate the gain value of the signal transmitted by the transmit port in operation.

10. The RF circuit according to any of claims 4 to 8, wherein the RF circuit is further configured to perform a calibration operation on the signal received by the receive port and obtain a gain value of the signal received by the receive port; the radio frequency circuit tests the sensitivity parameters of the antenna radiator according to the following formula:

Sensitivity＝P _rx1 -G _rx -A

wherein, sensitivity is a Sensitivity parameter of the antenna radiator; p _rxl Obtaining a power value for the radio frequency transceiver through the receiving port; grx is a gain value of a signal received by the receive port in a calibration operation; a is a back-off value of a transmitting link inside the radio frequency transceiver.

11. A radio frequency circuit, comprising:

a radio frequency transceiver including a transmit port and a receive port;

12. The radio frequency circuit of claim 11, wherein the radio frequency transceiver further comprises a feedback port; the radio frequency circuit further includes:

when the first end is conducted with the third end, the coupler is used for receiving the signal transmitted by the transmitting port, transmitting the signal to the signal regulating module, and transmitting the signal to the receiving port through the signal regulating module.

13. The rf circuit of claim 12, wherein the rf circuit comprises a plurality of antenna radiators and a plurality of couplers, each coupler for coupling with one of the antenna radiators; the radio frequency circuit further includes:

the all-in-one network comprises an input end and a plurality of output ends, each output end is electrically connected with one coupler, and the input end is electrically connected with the transmitting port.

14. An antenna arrangement, characterized in that it comprises a radio frequency circuit according to any of claims 1 to 13.

15. An electronic device, comprising a circuit board on which a radio frequency circuit is disposed, wherein the radio frequency circuit is as claimed in any one of claims 1 to 13.