CN116054967A

CN116054967A - Power detection circuit and method

Info

Publication number: CN116054967A
Application number: CN202310333101.XA
Authority: CN
Inventors: 赵越; 佘如茹; 邓作
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-05-02
Anticipated expiration: 2043-03-31
Also published as: CN116054967B

Abstract

The embodiment of the application provides a power detection circuit and a method, which relate to the field of radio frequency and can improve the isolation between power detection links with lower cost. The power detection circuit comprises a plurality of coupling modules, a first switch and a radio frequency integrated circuit. The output end of the coupling module is connected to the radio frequency integrated circuit through the first switch, and the coupling end of the coupling module is connected with the transmitting link in a coupling way. The coupling module is used for acquiring the radio frequency signals in the transmitting link, and the radio frequency integrated circuit is used for detecting the power of the radio frequency signals in the transmitting link. When detecting the power of the radio frequency signal in the first transmission link, the radio frequency integrated circuit is communicated with the output end of the first coupling module through the first switch, the radio frequency integrated circuit is disconnected from the output end of the coupling module except the first coupling module, the output end of the first coupling module is communicated with the coupling end, and the output end of the coupling module except the first coupling module is disconnected from the coupling end.

Description

Power detection circuit and method

Technical Field

The embodiment of the application relates to the field of radio frequency, in particular to a power detection circuit and a power detection method.

Background

In a radio frequency circuit of an electronic device, a power detection link is generally configured to detect power of a radio frequency signal in a corresponding transmission link. In order to reduce interference between different power detection links in dual-transmission scenarios such as ENDC (E-UTRAN New Radio Dual Connectivity, LTE and NR dual-connection), a filter network is set on the different power detection links in the related art to improve isolation between the different power detection links.

However, placing a filter network on the power detection link adds significant hardware costs.

Disclosure of Invention

The embodiment of the application provides a power detection circuit and a method, which can improve the isolation between different power detection links with lower cost.

In order to achieve the above purpose, the following technical solutions are adopted in the embodiments of the present application.

In a first aspect, a power detection circuit is provided, the power detection circuit being coupled to a plurality of transmit chains, respectively. The transmit chain is used to transmit radio frequency signals to the antenna. The power detection circuit includes: a plurality of coupling modules, a first switch and a radio frequency integrated circuit. The output end of the coupling module is connected to the radio frequency integrated circuit through the first switch, and the coupling end of the coupling module is connected with the transmitting link in a coupling way. Wherein different coupling modules are coupled to different transmit chains. The coupling module is used for acquiring the radio frequency signals in the transmitting link, and the radio frequency integrated circuit is used for detecting the power of the radio frequency signals in the transmitting link. When detecting the power of the radio frequency signal in the first transmission link, the radio frequency integrated circuit is communicated with the output end of the first coupling module through the first switch, the radio frequency integrated circuit is disconnected from the output end of the coupling module except the first coupling module, the output end of the first coupling module is communicated with the coupling end, and the output end of the coupling module except the first coupling module is disconnected from the coupling end. The first coupling module and the first transmitting link are any pair of coupling modules and transmitting links which are coupled and connected.

Based on the scheme, when the power of the radio frequency signal in the first transmitting link is detected, a first switch is arranged between the power detecting link where the first coupling module is positioned and the power detecting links where the other coupling modules are positioned, and at least one other coupling module is also arranged between the first switch and the power detecting link. In other words, the isolation between the power detection link where the first coupling module is located and the power detection links where the other coupling modules are located is provided by one first switch and at least one coupling module. Thus, the isolation between the power detection links is improved with lower hardware cost.

In one possible design, the coupling module includes a second switch therein. One end of the second switch is connected with the coupling end of the coupling module, and the other end of the second switch is connected with the output end of the coupling module. When detecting the power of the radio frequency signal in the first transmission link, the second switch in the first coupling module is used for communicating the output end and the coupling end of the first coupling module. The second switch in the coupling module other than the first coupling module is used to disconnect the output terminal of the corresponding coupling module from the coupling terminal. Based on the scheme, when the power of the radio frequency signal in the first transmitting link is detected, the isolation between the power detecting link where the first coupling module is positioned and the power detecting links where other coupling modules are positioned is provided by a first switch and a second switch, so that the isolation requirement between the power detecting links can be met. Thus, the isolation between the power detection links is improved with lower hardware cost.

In one possible design, the coupling module is further provided with an extension. The extension end of the coupling module is connected with the second switch of the coupling module. The extension end of the coupling module is used for being connected with the output end of another coupling module so as to realize cascade connection among a plurality of coupling modules. Based on the scheme, cascade connection can be realized between the coupling modules through the expansion end.

In one possible design, the plurality of transmit chains includes a second transmit chain, a third transmit chain, a fourth transmit chain, and a fifth transmit chain. The plurality of coupling modules includes a second coupling module, a third coupling module, a fourth coupling module, and a fifth coupling module. The coupling end of the second coupling module is coupled with the second transmitting link. The coupling end of the third coupling module is coupled with the third transmitting link. And the coupling end of the fourth coupling module is connected with a fourth transmitting link. The coupling end of the fifth coupling module is coupled with the fifth transmitting link. The output end of the second coupling module and the output end of the fourth coupling module are respectively connected to the radio frequency integrated circuit through the first switch. The output end of the third coupling module is connected with the extension end of the second coupling module. The output end of the fifth coupling module is connected with the expansion end of the fourth coupling module. Based on the scheme, the isolation degree between the power detection links can be improved with lower hardware cost.

In one possible design, the isolation of each second switch is greater than or equal to 20dB and less than or equal to 30dB. The isolation of the first switch is greater than or equal to 20dB and less than or equal to 30dB. Based on the scheme, the isolation requirement can be met by spacing two switches between each power detection link, and normal operation cannot be affected by mutual interference.

In one possible design, the plurality of transmit chains includes a second transmit chain, a third transmit chain, a fourth transmit chain, and a fifth transmit chain. The plurality of coupling modules includes a second coupling module, a third coupling module, a fourth coupling module, and a fifth coupling module. The coupling end of the second coupling module is coupled with the second transmitting link. The coupling end of the third coupling module is coupled with the third transmitting link. And the coupling end of the fourth coupling module is connected with a fourth transmitting link. The coupling end of the fifth coupling module is coupled with the fifth transmitting link. The output end of the second coupling module, the output end of the third coupling module, the output end of the fourth coupling module and the output end of the fifth coupling module are respectively connected to the radio frequency integrated circuit through the first switch. Based on the scheme, the isolation degree between the power detection links can be improved with lower hardware cost.

In one possible design, the coupling end of the coupling module is provided with a coupler, through which the coupling end is coupled to the transmitting link. The coupler couples the radio frequency signal in the transmit chain to a corresponding coupling module. Based on this scheme, the radio frequency signals in the transmit chain may be coupled to the corresponding coupling modules by couplers.

In a second aspect, a power detection method is provided, applied to the power detection circuit according to any one of the first aspects. The method comprises the following steps: when detecting the power of the radio frequency signal in the first transmission link, controlling the first switch to be communicated with the output end of the radio frequency integrated circuit and the first coupling module, and disconnecting the connection between the radio frequency integrated circuit and the output end of the coupling module except the first coupling module. And connecting the output end of the first coupling module with the coupling end, and disconnecting the output end of the coupling modules except the first coupling module from the coupling end.

In a third aspect, an electronic device is provided that includes one or more processors and one or more memories. One or more memories are coupled to the one or more processors, the one or more memories storing computer instructions. The computer instructions, when executed by one or more processors, cause the electronic device to perform the power detection method as the second aspect.

In a fourth aspect, a system on a chip is provided, the chip comprising processing circuitry and an interface. The processing circuit is configured to call from the storage medium and execute the computer program stored in the storage medium to perform the power detection method as in the second aspect.

In a fifth aspect, there is provided a computer readable storage medium comprising computer instructions which, when executed, perform the power detection method as in the second aspect.

In a sixth aspect, a computer program product is provided, comprising instructions in the computer program product for enabling a computer to carry out the power detection method as in the second aspect, when the computer program product is run on the computer.

It should be appreciated that the technical features of the technical solutions provided in the second aspect, the third aspect, the fourth aspect, the fifth aspect and the sixth aspect may all correspond to the power detection method provided in the first aspect and the possible designs thereof, so that the beneficial effects can be achieved similarly, and are not repeated herein.

Drawings

FIG. 1 is a schematic diagram of a radio frequency circuit;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

Fig. 3 is a schematic diagram of a power detection circuit according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a power detection circuit according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of an operating state of a power detection circuit according to an embodiment of the present application;

fig. 6 is a schematic diagram of an operating state of a power detection circuit according to another embodiment of the present disclosure;

fig. 7 is a schematic diagram of a coupling module according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram of cascading between coupling modules according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a power detection circuit according to an embodiment of the present disclosure;

fig. 10 is a schematic diagram of an operating state of a power detection circuit according to an embodiment of the present application;

fig. 11 is a schematic diagram of an operating state of a power detection circuit according to another embodiment of the present disclosure;

fig. 12 is a schematic diagram of the composition of an electronic device according to an embodiment of the present application;

fig. 13 is a schematic diagram of a system on chip according to an embodiment of the present application.

Detailed Description

The terms "first," "second," and "third," etc. in the embodiments of the present application are used for distinguishing between different objects and not for defining a particular order. Furthermore, the words "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In order to facilitate understanding of the embodiments of the present application, the following description first refers to the background of the embodiments of the present application.

In radio frequency circuits of electronic devices, the power detection link is typically coupled to a transmit link. When the transmitting chain transmits the radio frequency signal to the antenna, the radio frequency signal is coupled to the power detection chain and transmitted to the radio frequency integrated circuit (Radio Frequency Integrated Circuit, RFIC) through the power detection chain, and the radio frequency integrated circuit performs power detection on the radio frequency signal.

In actual communications, electronic devices often have a need for dual or multiple transmissions. The dual transmission means that two transmitting links in the radio frequency circuit work simultaneously, for example, when the terminal equipment is in an ENDC scene, a link which needs to transmit a 4G signal and a link which transmits a 5G signal work simultaneously. Similarly, multiple refers to multiple transmit chains in a radio frequency circuit operating simultaneously.

Only one power detection port is typically provided in a radio frequency integrated circuit. That is, the rf integrated circuit can only receive rf signals transmitted by one power detection link at a time.

If the isolation between different power detection links is low, in a dual-shot or multiple shot scenario, the power detection links connected with the radio frequency integrated circuit may be interfered by radio frequency signals in other power detection links, and cannot work normally. The following is an example.

Please refer to fig. 1, which is a schematic diagram of a radio frequency circuit. As shown in fig. 1, the rf circuit includes an rf integrated circuit 101, an rf module 102, a switch 103, a coupler a, a coupler b, an antenna c, and an antenna d.

Switch 103 is a single pole double throw switch. The active terminal of the switch 103 is connected to the radio frequency integrated circuit 101. One of the stationary terminals of the switch 103 is connected to the coupler a, and the other stationary terminal is connected to the coupler b.

The antennas c and d are connected to the rf module 102, respectively. The rf module 102 is configured to generate an rf signal, filter, amplify, and transmit the generated rf signal to the antenna. Illustratively, the radio frequency module may include a signal source, a Power Amplifier (PA), a filter, and the like.

For ease of description, the link between antenna c and rf module 102 is referred to as the transmit link of antenna c, and the link between antenna d and rf module 102 is referred to as the transmit link of antenna d.

The coupler a is coupled to the transmit chain of the antenna c. The coupler b is coupled to the transmit chain of the antenna d. For convenience of explanation, the link between the coupler a and the switch 103 is referred to as a power detection link of the antenna c, and the link between the coupler b and the switch 103 is referred to as a power detection link of the antenna d.

The above is the circuit configuration of the radio frequency circuit shown in fig. 1. In the dual-transmission scenario, the radio frequency circuit has larger interference between two power detection links, which is described in detail below.

When power detection is performed on the rf signal in the transmission chain of the antenna c, the switch 103 connects the coupler a to the rf integrated circuit 101. In this way, the rf signal in the transmitting chain of the antenna c is coupled and transmitted to the rf integrated circuit 101 through the coupler a, so that the rf integrated circuit 101 can perform power detection on the rf signal. However, the radio frequency signal in the transmitting chain of the antenna d is also coupled to the switch 103 via the coupler b. That is, the radio frequency signal in the transmission chain of antenna c and the radio frequency signal in the transmission chain of antenna d are separated only by switch 103. Because the isolation degree that the switch can provide is smaller, can't satisfy the isolation degree demand between the different power detection links, so antenna c's power detection link can not normally work under this scene because of receiving the interference of antenna d's power detection.

Similarly, when the radio frequency signal in the transmitting chain of the antenna d is detected, the power detecting chain of the antenna d is interfered by the power detecting chain of the antenna c, so that the antenna d cannot work normally.

In order to solve the above-mentioned problems, in the related art, filters are respectively disposed on the power detection link of the antenna c and the power detection link of the antenna d to increase the isolation between the two power detection links. However, the provision of the filter increases a large hardware cost.

Therefore, how to design a power detection circuit with low hardware cost and high isolation between power detection links is a problem to be solved.

In order to solve the above-mentioned problems, embodiments of the present application provide a power detection circuit and method, which can improve isolation between power detection links with lower cost.

The power detection circuit provided by the embodiment of the application can be applied to electronic equipment with a communication function. It should be understood that an electronic device with communication functionality may refer to an electronic device with radio frequency circuitry, antennas, etc., such as a cell phone, tablet, wearable device (e.g., smart watch), vehicle mounted device, laptop (Laptop), desktop computer, etc. Exemplary embodiments of the electronic device include, but are not limited to, portable terminals carrying IOS, android, microsoft or other operating systems.

As an example, please refer to fig. 2, which is a schematic structural diagram of an electronic device according to an embodiment of the present application.

As shown in fig. 2, the electronic device 200 may include a processor 201, a communication module 202, and the like.

The processor 201 may include one or more processing units, for example: the processor 201 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video stream codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors 201.

In some embodiments, the processor 201 may include one or more interfaces, such as a universal serial bus (universal serial bus, USB) interface 211, or the like.

The communication module 202 may include an antenna x, an antenna y, a mobile communication module 202A, and/or a wireless communication module 202B. Taking the communication module 202 as an example, the mobile communication module 202A and the wireless communication module 202B include an antenna x, an antenna y at the same time.

The wireless communication function of the electronic device 200 can be implemented by an antenna x, an antenna y, a mobile communication module 202A, a wireless communication module 202B, a modem processor, a baseband processor, and the like.

The antennas x and y are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 200 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna x may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 202A may provide a solution for wireless communication, including 2G/3G/4G/5G, applied on the electronic device 200. The mobile communication module 202A may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 202A may receive electromagnetic waves from the antenna x, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 202A may amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna x to radiate the electromagnetic waves. In some embodiments, at least some of the functional modules of the mobile communication module 202A may be provided in the processor 201. In some embodiments, at least some of the functional modules of the mobile communication module 202A may be provided in the same device as at least some of the modules of the processor 201.

The wireless communication module 202B may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc., applied to the electronic device 200. The wireless communication module 202B may be one or more devices that integrate at least one communication processing module. The wireless communication module 202B receives electromagnetic waves via the antenna y, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 201. The wireless communication module 202B may also receive a signal to be transmitted from the processor 201, frequency modulate it, amplify it, and convert it into electromagnetic waves via the antenna y.

In some embodiments, antenna x and mobile communication module 202A of electronic device 200 are coupled, and antenna y and wireless communication module 202B are coupled, such that electronic device 200 may communicate with a network and other devices through wireless communication techniques. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) and/or a satellite based augmentation system (satellite based augmentation systems, SBAS).

The power detection circuit provided in the embodiments of the present application may be disposed in the communication module 202. In particular, the power detection circuit may be disposed in the mobile communication module 202A and/or the wireless communication module 202B.

The electronic device under test mentioned in the embodiment of the present application is described above. It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device 200. In other embodiments, the electronic device 200 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The power detection circuit provided in the embodiment of the present application is described below.

The power detection circuit is used for detecting the power of the radio frequency signal in the transmitting link. The power detection circuit may be coupled to a plurality of transmit chains to couple radio frequency signals in the receive transmit chains, for example. In the embodiment of the present application, the transmitting link may be a link for transmitting radio frequency signals to the antenna. One end of the transmitting link is connected with the antenna, and the other end is connected with the radio frequency module. Reference is made to the foregoing description for an introduction of a radio frequency module.

Fig. 3 is a schematic diagram of a power detection circuit according to an embodiment of the present application. As shown in fig. 3, the power detection circuit includes: a plurality of coupling modules 301, a first switch 302, and a radio frequency integrated circuit 303.

The output 312 of the coupling module 301 is connected to the radio frequency integrated circuit 303 through the first switch 302. The coupling end 311 of the coupling module 301 is coupled to the transmit chain. Wherein different coupling modules are coupled to different transmit chains. The coupling module 301 is configured to acquire a radio frequency signal in a transmission link, and the radio frequency integrated circuit 303 is configured to detect power of the radio frequency signal in the transmission link.

The isolation provided by the first switch may be between 20dB and 30dB, which is not particularly limited herein.

The operation principle of the power detection circuit is explained below. The first coupling module and the first transmitting link refer to any pair of coupling modules and transmitting links which are coupled and connected in the power detection link.

When detecting the power of the radio frequency signal in the first transmission link, the radio frequency integrated circuit 303 is connected to the output end of the first coupling module through the first switch 302, the radio frequency integrated circuit is disconnected from the output end of the coupling module except the first coupling module, the output end of the first coupling module is connected to the coupling end, and the output end of the coupling module except the first coupling module is disconnected from the coupling end.

It can be seen that, in the power detection circuit provided in the embodiment of the present application, when detecting the power of the radio frequency signal in the first transmission link, not only the first switch is spaced between the power detection link where the first coupling module is located and the power detection links where the other coupling modules are located, but also other coupling modules are spaced between the power detection links. In other words, the isolation between the power detection link where the first coupling module is located and the power detection links where the other coupling modules are located is provided by one first switch and one coupling module. Thus, the isolation between the power detection links is improved with lower hardware cost.

For convenience of explanation, the power detection circuit provided in the embodiment of the present application is explained below by taking an example in which the power detection circuit includes four power detection links. Note that, the connection relationship between the respective elements in the power detection circuit is still as described in the corresponding description of fig. 3, and this is only one specific example of the power detection circuit shown in fig. 3.

In this example, the number of transmission links is 4, which are respectively referred to as a second transmission link, a third transmission link, a fourth transmission link, and a fifth transmission link.

Fig. 4 is a schematic diagram of a power detection circuit according to an embodiment of the present application. As shown in fig. 4, the power detection circuit includes: a second coupling module 401, a third coupling module 402, a fourth coupling module 403, a fifth coupling module 404, a first switch 405 and a radio frequency integrated circuit 406.

The coupling end 411 of the second coupling module 401 is coupled to the second transmitting link s. The coupling end 412 of the third coupling module 402 is coupled to the third transmission link k. The coupling end 413 of the fourth coupling module 403 is coupled to the fourth transmit chain m. The coupling end 414 of the fifth coupling module 404 is coupled to the fifth transmit chain n.

The output 421 of the second coupling module 401 is connected to the radio frequency integrated circuit 406 through the first switch 405. The output 422 of the third coupling module 402 is connected to the radio frequency integrated circuit 406 through the first switch 405. The output 423 of the fourth coupling module 403 is connected to the radio frequency integrated circuit 406 through the first switch 405. The output 424 of the fifth coupling module 404 is connected to the radio frequency integrated circuit 406 through a first switch 405.

The operation principle of the power detection circuit shown in fig. 4 will be described below by taking the second transmission link s and the third transmission link k as an example.

The operating state of the power detection circuit shown in fig. 4 is shown in fig. 5 when detecting the power of the radio frequency signal in the second transmission link s. The output 421 of the second coupling module 401 communicates with the coupling 411. The output 421 of the second coupling module 401 is connected to the rf integrated circuit 406 through the first switch 405.

The output 422 of the third coupling module 402 is disconnected from the coupling 412. The output 423 of the fourth coupling module 403 is disconnected from the coupling 413. The output 424 of the fifth coupling module 404 is disconnected from the coupling 414.

The output 422 of the third coupling module 402 is disconnected from the radio frequency integrated circuit 406. The output 423 of the fourth coupling module 403 is disconnected from the radio frequency integrated circuit 406. The output 424 of the fifth coupling module 404 is disconnected from the rf integrated circuit 406.

As can be seen from fig. 5, the second transmitting link s and the third transmitting link k are in an operating state, and when detecting the power of the radio frequency signal in the second transmitting link s, a first switch 405 and a third coupling module 402 are spaced between the power detecting link where the second coupling module 401 is located and the coupling end 412 of the third coupling module 402. That is, the isolation between the power detection link where the second coupling module 401 is located and the coupling end 412 of the third coupling module 402 is provided by the first switch 405 and the third coupling module 402.

Similarly, when detecting the power of the radio frequency signal in the third transmission link k, the operation state of the power detection circuit shown in fig. 4 is shown in fig. 6. The output 422 of the third coupling module 402 communicates with the coupling 412. The output 422 of the third coupling module 402 communicates with the rf integrated circuit 406 via the first switch 405.

The output 421 of the second coupling module 401 is disconnected from the coupling 411. The output 423 of the fourth coupling module 403 is disconnected from the coupling 413. The output 424 of the fifth coupling module 404 is disconnected from the coupling 414.

The output 421 of the second coupling module 401 is disconnected from the radio frequency integrated circuit 406. The output 423 of the fourth coupling module 403 is disconnected from the radio frequency integrated circuit 406. The output 424 of the fifth coupling module 404 is disconnected from the rf integrated circuit 406.

As can be seen from fig. 6, the second transmitting link s and the third transmitting link k are in an operating state, and when detecting the power of the radio frequency signal in the third transmitting link k, a first switch 405 and a second coupling module 401 are spaced between the power detecting link where the third coupling module 402 is located and the coupling end 411 of the second coupling module 401. That is, the isolation between the power detection link where the third coupling module 402 is located and the coupling end 411 of the second coupling module 401 is provided by the first switch 405 and the third coupling module 402.

In other dual-shot or multiple-shot scenarios, the process of detecting the radio frequency signal in the transmitting link is similar to the above process, and will not be described herein.

Based on the above description, it can be determined that the power detection circuit shown in fig. 4 can achieve higher isolation between the power detection links at lower cost.

In some possible designs, the connection or disconnection between the output of the coupling module and the coupling terminal may be controlled by a switch. For example, please refer to fig. 7, which is a schematic diagram of a coupling module according to an embodiment of the present application. As shown in fig. 7, the coupling module includes a coupler 701 and a single pole single throw switch 702. One end of the single pole single throw switch 702 is connected with the coupler 701, and the other end is the output end of the coupling module. The coupler 701 is the coupling end of the coupling module.

Wherein the coupler 701 is coupled to a corresponding transmit chain (not shown in fig. 7) for coupling radio frequency signals in the transmit chain into a coupling module. The single pole single throw switch 702 is used to close when detecting the power of the radio frequency signal in the corresponding transmit chain and open when not detecting the power of the radio frequency signal in the corresponding transmit chain.

The working states of the single pole single throw switch in each coupling module in each scene will be described by taking the power detection circuit in fig. 4 as an example. For convenience of explanation, any one of the second transmission link s, the third transmission link k, the fourth transmission link m, and the fifth transmission link n in fig. 4 will be referred to as a first transmission link. The coupling module coupled to the first transmit chain is referred to as a first coupling module.

When the power of the radio frequency signal in the first transmission link is detected, the single-pole single-throw switch in the first coupling module can be closed, and the output end and the coupling end of the first coupling module are communicated. The single pole single throw switch in the other coupling modules except the first coupling module may be turned off, i.e. between the output and the coupling of the other coupling modules except the first coupling module is turned off by the corresponding single pole single throw switch.

The first transmission link is illustratively a second transmission link s, which is dual-transmitting with the third transmission link k. When detecting the power of the radio frequency signal in the second transmitting link s, the single pole single throw switch in the second coupling module 401 may be closed, and the output end and the coupling end of the second coupling module 401 are connected. The single pole single throw switch in the third coupling module 402 can be opened, disconnecting the output of the third coupling module 402 from the coupling. In this scenario, a first switch and a single-pole single-throw switch in the third coupling module are spaced between the power detection link where the second coupling module is located and the coupling end of the third coupling module. That is, the isolation between the power detection link where the second coupling module is located and the coupling end of the third coupling module is provided by the first switch and the single pole single throw switch in the third coupling module.

Generally, the isolation between the power detection links can meet the requirements of normal operation when the isolation between the power detection links reaches more than 40dB, and the isolation provided by the switch is more than 20 dB. In the embodiment of the application, the isolation provided by the first switch is between 20dB and 30dB, and the isolation provided by the single pole single throw switch is also between 20dB and 30 dB. In this way, in the power detection circuit provided by the embodiment of the application, when the second transmitting link s and the third transmitting link k are used for double transmitting, and the power of the radio frequency signal in the second transmitting link s is detected, the isolation between the power detection link where the second coupling module is located and the coupling end of the third coupling module is more than 40dB, so that the requirement of normal operation can be met.

The scenario in which the first transmission link is the other transmission link is similar to the scenario in which the first transmission link is the second transmission link s, which is not described herein.

In embodiments of the present application, the single pole single throw switch in the coupling module may also be referred to as a second switch. The second switch may be a single pole single throw switch, or a single pole double throw switch, which will be described in detail below.

When the second switch is a single-pole double-throw switch, the second switch can comprise a movable end, a first fixed end, a second fixed end and a switching gear lever. The switching gear lever is movably connected with the movable end. The switching gear lever is used for connecting the movable end to the first fixed end or the second fixed end.

In this embodiment of the present application, the moving end of the second switch may be connected to the output end of the coupling module. The first stationary end of the second switch may be connected with the coupling end of the coupling module. The second stationary terminal of the second switch may be connected with the extension terminal of the coupling module.

The extension end of the coupling module can be used for being connected with the output end of another coupling module so as to realize cascade connection among a plurality of coupling modules.

For example, please refer to fig. 8, which is a schematic diagram of cascading between coupling modules according to an embodiment of the present application. As shown in fig. 8, the coupling module 801 includes a second switch 811 and a coupler 821. The second switch 811 has a movable end connected to the output 831 of the coupling module 801, a first stationary end connected to the coupler 821, and a second stationary end connected to the expansion end 851.

The extension end of the coupling module 801 is connected with the output end of another coupling module, so that cascading between the coupling modules can be realized.

On this basis, the power detection circuit shown in fig. 4 may be replaced with the power detection circuit shown in fig. 9. Fig. 9 is a schematic diagram of a power detection circuit according to another embodiment of the present application. As shown in fig. 9, the power detection circuit includes a radio frequency integrated circuit 901, a first switch 902, a second coupling module 903, a third coupling module 904, a fourth coupling module 905, and a fifth coupling module 906.

The second coupling module 903 includes an output 913, a coupler 923, an extension 933, and a second switch 943. Wherein the coupler 923 is coupled to the second transmit chain. The output 913 is connected to the first switch 902. Extension 933 is coupled to output 914 of third coupling module 904. The second switch 943 has a movable end connected to the output end 913, one fixed end connected to the coupler 923, and the other fixed end connected to the extension end 933.

The third coupling module 904 includes an output 914, a coupler 924, an extension 934, and a second switch 944. Wherein coupler 924 is coupled to the third transmit chain. Extension 934 is left empty. The second switch 944 has a movable terminal connected to the output 914, one fixed terminal connected to the coupler 924, and the other fixed terminal connected to the extension 934.

The fourth coupling module 905 includes an output 915, a coupler 925, an extension 935, and a second switch 945. Wherein coupler 925 is coupled to a fourth transmit chain. The output 915 is coupled to the first switch 902. Extension 935 is connected to output 916 of fifth coupling module 906. The second switch 945 has a movable terminal connected to the output terminal 915, one of which is connected to the coupler 925 and the other of which is connected to the extension terminal 935.

The fifth coupling module 906 includes an output 916, a coupler 926, an extension 936, and a second switch 946. Wherein coupler 926 is coupled to a fifth transmit chain. Extension 936 is empty. The second switch 946 has a movable terminal coupled to the output terminal 916, one of which is coupled to the coupler 926 and the other of which is coupled to the expansion terminal 936.

It can be seen that in the power detection circuit shown in fig. 4, the first switch is a single-pole four-throw switch, and each of the second switches is a single-pole single-throw switch. In the power detection circuit shown in fig. 9, the first switch and each of the second switches are single pole double throw switches. That is, the hardware costs of both schemes are substantially the same.

The operation principle of the power detection circuit shown in fig. 9 will be described below by taking the second transmission link and the fourth transmission link as examples.

The operating state of the power detection circuit shown in fig. 9 may be as shown in fig. 10 when detecting the power of the radio frequency signal in the second transmission link. The radio frequency integrated circuit 901 is connected to the output 913 of the second coupling module 903 through a first switch 902. The radio frequency integrated circuit 901 is disconnected from the output 914 of the third coupling module 904. The radio frequency integrated circuit 901 is disconnected from the output 915 of the fourth coupling module 905. The radio frequency integrated circuit 901 is disconnected from the output 916 of the fifth coupling module 906. The output 913 of the second coupling module 903 is in communication with the coupler 923 through a second switch 943. The output 914 of the third coupling module 904 is disconnected from the coupler 924. The output 915 of the fourth coupling module 905 is disconnected from the coupler 925. The output 916 of the fifth coupling module 906 is disconnected from the coupler 926.

It can be seen that, when detecting the power of the radio frequency signal in the second transmitting link, a second switch in the fourth coupling module and the first switch are spaced between the power detecting link where the second coupling module is located and the coupler of the fourth coupling module. That is to say, the isolation between the power detection link where the second coupling module is located and the coupler of the fourth coupling module is provided by 1 second switch and 1 first switch, so that the isolation requirement between the power detection links can be met, and the normal operation of each power detection link can not be influenced.

In this embodiment of the present application, when the output end of the coupling module is disconnected from the coupling end, the output end may be connected to the extension end as shown in fig. 10, or whether the output end is connected to the extension end may not be configured, which is not limited herein.

The operating state of the power detection circuit shown in fig. 9 may be as shown in fig. 11 when detecting the power of the radio frequency signal in the second transmission link. The radio frequency integrated circuit 901 is communicated with an output 915 of a fourth coupling module 905 through a first switch 902. The radio frequency integrated circuit 901 is disconnected from the output 914 of the third coupling module 904. The radio frequency integrated circuit 901 is disconnected from the output 913 of the second coupling module 903. The radio frequency integrated circuit 901 is disconnected from the output 916 of the fifth coupling module 906. The output 914 of the third coupling module 904 is disconnected from the coupler 924. The output 913 of the second coupling module 903 is disconnected from the coupler 923. The output 916 of the fifth coupling module 906 is disconnected from the coupler 926.

It can be seen that, when detecting the power of the radio frequency signal in the fourth transmitting link, a second switch in the second coupling module and the first switch are spaced between the power detecting link where the fourth coupling module is located and the coupler of the second coupling module. That is to say, the isolation between the power detection link where the fourth coupling module is located and the coupler of the second coupling module is provided by 1 second switch and 1 first switch, so that the isolation requirement between the power detection links can be met, and the normal operation of each power detection link can not be influenced.

Therefore, the power detection links shown in fig. 9 can improve the isolation between the power detection links at a lower hardware cost.

When needed, the power detection circuit shown in fig. 4 and fig. 9 is a specific implementation of the power detection circuit provided in the embodiment of the present application. In practical application, the number of power detection links in the power detection circuit may be less than 4, or may be greater than 4. In addition, the cascade connection can be formed by every 2 power detection links, the cascade connection can be formed by more power detection links, the cascade connection can be formed by partial 2 power detection links, the cascade connection is not formed by partial power detection links, and the cascade connection is formed by partial more than 2 power detection links. It should be understood that the number of power detection links and the adjustment of the cascade manner of each power detection link should fall within the protection scope of the power detection circuit provided in the embodiments of the present application.

In addition, the power detection circuit provided in the above embodiments may also be used to detect the power of the radio frequency signal in the receiving link, and only the transmitting link in each of the above embodiments needs to be replaced by the receiving link, which is not described in detail in the embodiments of the present application.

The embodiment of the application also provides electronic equipment, which comprises the power detection circuit provided by any one of the previous embodiments.

The embodiment of the application also provides a power detection method which is applied to the power detection circuit provided by any one of the previous embodiments. The method comprises the following steps: when detecting the power of the radio frequency signal in the first transmission link, controlling the first switch to be communicated with the output end of the radio frequency integrated circuit and the first coupling module, and disconnecting the connection between the radio frequency integrated circuit and the output end of the coupling module except the first coupling module. And connecting the output end of the first coupling module with the coupling end, and disconnecting the output end of the coupling modules except the first coupling module from the coupling end.

It should be noted that, all relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

Please refer to fig. 12, which is a schematic diagram illustrating a composition of an electronic device 1200 according to an embodiment of the present application. The electronic device 1200 may be any of the above examples, for example, the electronic device 1200 may be a cell phone, a computer, or the like. For example, as shown in fig. 12, the electronic device 1200 may include: a processor 1201 and a memory 1202. The memory 1202 is used to store computer-executable instructions. For example, in some embodiments, the processor 1201, when executing instructions stored in the memory 1202, can cause the electronic device 1200 to perform any of the functions of the electronic device in the embodiments described above to implement any of the power detection methods in the examples above.

Fig. 13 shows a schematic diagram of the components of a chip system 1300. The chip system 1300 may be provided in an electronic device. For example, the chip system 1300 may be provided in a mobile phone. Illustratively, the chip system 1300 may include: a processor 1301 and a communication interface 1302 for supporting the electronic device to implement the functions referred to in the above embodiments. In one possible design, the chip system 1300 also includes memory to hold the necessary program instructions and data for the electronic device. The chip system can be composed of chips, and can also comprise chips and other discrete devices. It should be noted that, in some implementations of the present application, the communication interface 1302 may also be referred to as an interface circuit.

The present application further provides a computer storage medium having stored therein computer instructions which, when executed on a terminal device, cause the terminal device to perform the above-mentioned related method steps to implement the method in the above-mentioned embodiments.

The present application also provides a computer program product which, when run on a computer, causes the computer to perform the above-mentioned related steps to implement the method in the above-mentioned embodiments.

In addition, embodiments of the present application also provide an apparatus, which may be specifically a chip, a component, or a module, and may include a processor and a memory connected to each other; the memory is configured to store computer-executable instructions, and when the device is operated, the processor may execute the computer-executable instructions stored in the memory, so that the chip performs the methods in the above method embodiments.

The terminal device, the computer storage medium, the computer program product, or the chip provided in the embodiments of the present application are used to execute the corresponding methods provided above, so that the beneficial effects that can be achieved by the terminal device, the computer storage medium, the computer program product, or the chip can refer to the beneficial effects in the corresponding methods provided above, and are not described herein.

The above description has been made mainly from the point of view of the electronic device. To achieve the above functions, it includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiments of the present application may divide functional modules of devices involved therein according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

The functions or acts or operations or steps and the like in the embodiments described above may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Although the present application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the present application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to include such modifications and variations as well.

Claims

1. A power detection circuit, wherein the power detection circuit is respectively coupled with a plurality of transmitting links; the transmitting link is used for transmitting radio frequency signals to the antenna; the power detection circuit includes: a plurality of coupling modules, a first switch and a radio frequency integrated circuit;

the output end of the coupling module is connected to the radio frequency integrated circuit through the first switch, and the coupling end of the coupling module is coupled with the transmitting link; wherein different coupling modules are coupled with different transmitting links;

The coupling module is used for acquiring radio frequency signals in the transmitting link, and the radio frequency integrated circuit is used for detecting the power of the radio frequency signals in the transmitting link;

when detecting the power of a radio frequency signal in a first transmission link, the radio frequency integrated circuit is communicated with the output end of a first coupling module through the first switch, the radio frequency integrated circuit is disconnected from the output end of the coupling module except the first coupling module, the output end of the first coupling module is communicated with the coupling end, and the output end of the coupling module except the first coupling module is disconnected from the coupling end; the first coupling module and the first transmitting link are any pair of coupling modules and transmitting links which are coupled and connected.

2. The power detection circuit of claim 1, wherein the coupling module includes a second switch therein; one end of the second switch is connected with the coupling end of the coupling module, and the other end of the second switch is connected with the output end of the coupling module;

when detecting the power of the radio frequency signal in the first transmission link, the second switch in the first coupling module is used for communicating the output end and the coupling end of the first coupling module; a second switch in a coupling module other than the first coupling module is used to disconnect the output of the corresponding coupling module from the coupling terminal.

3. The power detection circuit of claim 2, wherein the coupling module is further provided with an extension terminal;

the expansion end of the coupling module is connected with the second switch of the coupling module;

the expansion end of the coupling module is used for being connected with the output end of another coupling module so as to realize cascade connection among a plurality of coupling modules.

4. The power detection circuit of claim 3, wherein the plurality of transmit chains comprises a second transmit chain, a third transmit chain, a fourth transmit chain, and a fifth transmit chain; the plurality of coupling modules comprise a second coupling module, a third coupling module, a fourth coupling module and a fifth coupling module;

the coupling end of the second coupling module is coupled and connected with the second transmitting link; the coupling end of the third coupling module is coupled and connected with the third transmitting link; the coupling end of the fourth coupling module is connected with the fourth transmitting link; the coupling end of the fifth coupling module is coupled and connected with the fifth transmitting link;

the output end of the second coupling module and the output end of the fourth coupling module are respectively connected to the radio frequency integrated circuit through the first switch; the output end of the third coupling module is connected with the expansion end of the second coupling module; and the output end of the fifth coupling module is connected with the extension end of the fourth coupling module.

5. The power detection circuit of any of claims 2-4, wherein the isolation of each of the second switches is greater than or equal to 20dB and less than or equal to 30dB; the isolation of the first switch is greater than or equal to 20dB and less than or equal to 30dB.

6. The power detection circuit of claim 1, wherein the plurality of transmit chains comprises a second transmit chain, a third transmit chain, a fourth transmit chain, and a fifth transmit chain; the plurality of coupling modules comprise a second coupling module, a third coupling module, a fourth coupling module and a fifth coupling module;

the output end of the second coupling module, the output end of the third coupling module, the output end of the fourth coupling module and the output end of the fifth coupling module are respectively connected to the radio frequency integrated circuit through the first switch.

7. The power detection circuit according to any one of claims 1 to 4, wherein a coupling end of the coupling module is provided with a coupler, and the coupling end is coupled to the transmitting link through the coupler;

the coupler couples the radio frequency signals in the transmit chain to corresponding coupling modules.

8. A power detection method, characterized by being applied to the power detection circuit according to any one of claims 1 to 7; the method comprises the following steps:

when detecting the power of the radio frequency signal in the first transmission link, controlling the first switch to communicate the radio frequency integrated circuit with the output end of the first coupling module, and disconnecting the connection between the radio frequency integrated circuit and the output end of the coupling module except the first coupling module; and connecting the output end and the coupling end of the first coupling module, and disconnecting the output end and the coupling end of the coupling modules except the first coupling module.

9. An electronic device comprising one or more processors and one or more memories; the one or more memories coupled to the one or more processors, the one or more memories storing computer instructions;

The computer instructions, when executed by the one or more processors, cause the electronic device to perform the power detection method of claim 8.

10. A computer readable storage medium comprising computer instructions which, when executed, perform the power detection method of claim 8.

11. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the power detection method according to claim 8.