WO2020015552A1

WO2020015552A1 - Antenna receiving circuit, method, mobile terminal, and storage medium

Info

Publication number: WO2020015552A1
Application number: PCT/CN2019/095260
Authority: WO
Inventors: 柳凯
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-07-16
Filing date: 2019-07-09
Publication date: 2020-01-23
Also published as: CN110798232A

Abstract

The present application provides an antenna receiving circuit, a method, a mobile terminal, and a storage medium. The circuit comprises: an antenna receiving module and a control module. The antenna receiving module comprises an antenna common terminal, a drive distribution unit connected to the antenna common terminal, and a first switch connected to the drive distribution unit. The drive distribution unit is configured to determine a receiving frequency band; the first switch is configured to select M different matching channels, M is an integer greater than or equal to 2; the control module is configured to control the first switch to select a corresponding matching channel according to the receiving frequency band determined by the drive distribution unit.

Description

Antenna receiving circuit, method, mobile terminal and storage medium

Technical field

Embodiments of the present disclosure relate to, but are not limited to, radio frequency technologies in the field of wireless communications.

Background technique

With the development of mobile communication technology and the popularization of mobile terminals such as smart phones, people are pursuing the realization of basic functions of mobile terminals, and the requirements for the aesthetic appearance of mobile terminals and the thickness of mobile terminals have become more stringent. Correspondingly, the degree of integration of mobile terminals is also getting higher and higher.

Summary of the invention

In one aspect, the present disclosure provides an antenna receiving circuit, the circuit may include: an antenna receiving module and a control module; the antenna receiving module includes an antenna common end, a drive distribution unit connected to the antenna common end, and the antenna A first switch connected to the drive distribution unit; the drive distribution unit is configured to determine a receiving frequency band; the first switch is configured to select M different matching paths, where M is an integer greater than or equal to 2; the control module, And configured to control the first switch to select a corresponding matching path according to a receiving frequency band determined by the driving allocation unit.

In another aspect, the present disclosure also provides a method for switching an antenna receiving circuit. The method may include: determining a receiving frequency band of the antenna receiving module through a driving allocation unit of an antenna receiving module of the antenna receiving circuit; the circuit includes: An antenna receiving module and a control module; the antenna receiving module includes an antenna common end, a driving distribution unit connected to the antenna common end, and a first switch connected to the driving distribution unit and configured to select M different matching paths M is an integer greater than or equal to 2; the first switch is controlled to select a corresponding matching path according to a receiving frequency band determined by the driving allocation unit.

In another aspect, the present disclosure also provides a mobile terminal. The terminal may include at least a processor, a storage medium configured to store executable instructions, and the antenna receiving circuit described above, wherein the processor is configured to execute the stored executable instructions. The executable instructions are configured to execute the switching method of the antenna receiving circuit described herein.

In another aspect, the present disclosure also provides a computer-readable storage medium having computer-executable instructions stored therein, the computer-executable instructions configured to perform the switching method of the antenna receiving circuit described herein.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic structural diagram of a related art main set path antenna receiving module; FIG.

FIG. 1B is a schematic structural diagram of a related-art diversity channel antenna receiving module;

2A is a schematic structural diagram of an antenna receiving circuit according to an embodiment of the present disclosure;

2B is a schematic structural diagram of a structure of an antenna receiving circuit according to an embodiment of the present disclosure;

FIG. 2C is a schematic structural diagram of another antenna receiving circuit according to an embodiment of the present disclosure.

3A is a schematic structural diagram of an antenna receiving circuit according to an embodiment of the present disclosure;

3B is a schematic structural diagram of another antenna receiving circuit according to an embodiment of the present disclosure;

FIG. 4A is a schematic structural diagram of a main-collection-path antenna receiving circuit according to an embodiment of the present disclosure; FIG.

4B is a schematic structural diagram of another main set path antenna receiving circuit according to an embodiment of the present disclosure;

4C is a schematic structural diagram of a diversity path of an antenna receiving circuit according to an embodiment of the present disclosure;

4D is a schematic structural diagram of a diversity path of another antenna receiving circuit according to an embodiment of the present disclosure;

5 is a schematic flowchart of a switching method of an antenna receiving circuit according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a composition structure of a mobile terminal according to an embodiment of the present disclosure.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the specific technical solutions disclosed will be further described in detail below with reference to the accompanying drawings in the embodiments of the present disclosure. The following examples are used to illustrate the present disclosure, but not to limit the scope of the present disclosure.

Nowadays, the integration degree of mobile terminals is getting higher and higher. Taking mobile phones as an example, the standard frequency band of mobile phones used to be relatively small. Only the second-generation mobile communication technology (2-Generation wireless telephone technology (2G) or third-generation mobile communication technology (3G) -Generation wireless technology (3G), Global System for Mobile Communication (GSM) or Wideband Code Division Multiple Access (W-CDMA) corresponding frequency bands. Based on this, used in mobile phones The device is also relatively small. However, with the development of the fourth-generation mobile communication technology (4-Generation wireless wireless technology, 4G) or the fifth-generation mobile communication technology (5-Generation wireless wireless technology, 5G) and the development of future communications, there are now many frequency bands and standards, and mobile phones The devices on a motherboard are very dense. As more and more frequency bands are used, more and more components are used, and devices placed on a limited area are very limited. And the current circuit mode is to implement a fixed path according to each frequency band, and there are filters and amplifiers on the path, and each frequency band has. Because there are so many frequency bands, especially the full Netcom version, the path is full of the above devices, and once the printed circuit board (PCB) wiring is fixed, the receiving sensitivity of the path is fixed, only by changing the path Match for optimized routing. If there is interference, the problem can only be solved through revision, which not only increases the design cost and increases the device, but also takes up a lot of PCB layout space, which limits the performance and flexibility of the circuit design body.

In the related art, the circuit mode generally implements a fixed path according to each frequency band. FIG. 1A shows the structure of the main set path antenna receiving module. As shown in FIG. 1A, the main set path antenna receiving module includes a main set antenna transmitting / The receiving module 101a has a duplexer 102a, a low noise amplifier 103a, a filter 104a, and a transceiver 105a on each path. FIG. 1B shows the structure of a diversity path antenna receiving module. As shown in FIG. 1B, the diversity path antenna receiving module includes a diversity antenna receiving module 101b, and each path has a filter 102b, a low noise amplifier 103b, and another filter. Transceiver 104b and transceiver 105b. Since the main set path antenna receiving module has a duplexer, a low noise amplifier, and a filter on each path, the diversity path antenna receiving module has a filter, a low noise amplifier, and another filter on each path, and its connection They are fixedly designed according to the corresponding frequency bands, which not only increases the design cost and the number of devices, but also takes up a lot of PCB layout space and limits the performance and flexibility of the circuit design body.

Therefore, the present disclosure particularly provides an antenna receiving circuit, a method, a mobile terminal, and a storage medium, which substantially avoids one or more of the problems caused by the limitations and disadvantages of the related art.

In one aspect, the present disclosure provides an antenna receiving circuit. In some embodiments, the antenna receiving circuit includes: an antenna receiving module and a control module; the antenna receiving module includes an antenna common end, a driving distribution unit connected to the antenna common end, and a first switch connected to the driving distribution unit; the driving distribution unit , Configured to determine a receiving frequency band; a first switch configured to select M different matching paths, where M is an integer greater than or equal to 2; a control module configured to control the first switch to select a corresponding match according to the receiving frequency band determined by the drive allocation unit path.

In other embodiments, the antenna receiving module further includes a second switch; a second switch configured to select or connect M different matching paths and select N different frequency band filters, where N is an integer greater than or equal to 2; control A module configured to control the second switch to select a filter corresponding to the receiving frequency band according to the receiving frequency band; or a control module configured to control the second switch to select a corresponding matching path according to the receiving frequency band and control the second switch to select a corresponding frequency channel to receive Filter.

In the embodiment of the present disclosure, the control module may control the first switch to select a matching path corresponding to the receiving frequency band according to the receiving frequency band determined by the driving allocation unit, and may also control the first switch and the second switch to jointly select the receiving frequency band according to the receiving frequency band. Corresponding matching pathway.

FIG. 2A is a schematic structural diagram of an antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 2A, in some embodiments, the antenna receiving circuit includes: an antenna receiving module 21 and a control module 22, wherein the antenna receiving module 21 includes an antenna common end 211, is connected to the antenna common end 211, and is configured to determine a receiving frequency band A drive distribution unit 212, a first switch 214 connected to the drive distribution unit 212 and configured to select M different matching paths 213, and a filter configured to select or connect M different matching paths 213 and select N different frequency bands The second switch 216 of the converter 215; M and N are both integers greater than or equal to two.

In one embodiment, the control module 22 is configured to control the first switch 214 to select a corresponding matching path and control the second switch 216 to select a filter 215 corresponding to the reception frequency band according to the reception frequency band determined by the driving allocation unit 212; or, according to the determination, The receiving frequency band controls the first switch 214 and the second switch 216 to select a corresponding matching path, and controls the second switch 216 to select a filter corresponding to the receiving frequency band.

In one embodiment, the antenna common end 211 is configured to receive signals of different frequency bands and input the signals of different frequency bands to the drive distribution unit 212. After the drive distribution unit 212 performs drive distribution of the signals of different frequency bands, the signals will enter specific ports .

In the implementation process, the drive distribution unit 212 is configured to determine the receiving frequency band. When the antenna receiving module 21 is located in the main channel, the drive distribution unit 212 may be the main antenna transmission / reception module 101a in FIG. 1A; When 21 is located on the diversity path, the drive distribution unit 212 may be the diversity antenna receiving module 101b in FIG. 1B.

In other embodiments, the first end of the first switch is connected to the drive distribution unit, and the second end of the first switch is used to select M different matching paths; the first end of the second switch is used to select or connect M Different matching paths, the second end of the second switch is used to select filters of N different frequency bands.

In one embodiment, the first switch is a double-pole multi-throw radio frequency switch or a double-pole double-throw radio frequency switch, and the second switch is a double-pole multi-throw radio frequency switch. In other embodiments, the first switch and the second switch may also be switches of other specifications, which may be set according to the structure of the circuit, as long as the electrical connection between the circuits can be achieved through the first switch and the second switch. .

In the embodiment of the present disclosure, when different matching paths are selected for the same frequency band, the antenna receiving circuit has different sensitivities. For example, suppose there are two matching paths P1 and P2. For band B1, when the matching path P1 is selected, the sensitivity of the antenna receiving circuit is L1, and when the matching channel P2 is selected, the sensitivity of the antenna receiving circuit is L2. During the test, the sensitivity of different matching paths is obtained by selecting different matching paths, and then comparing the sensitivity corresponding to each matching path, and using the matching path with excellent sensitivity as the matching path corresponding to the frequency band. Therefore, when a signal is received, the drive allocation unit determines the receiving frequency band, and then the control module controls the second switch to select the corresponding filter, and controls the first switch to select the corresponding matching path; or, the control module controls the second switch A corresponding filter is selected, and the first switch and the second switch are controlled to select a corresponding matching path. In this way, the overall performance, flexibility, and receiving sensitivity of the circuit design can be improved.

It can be seen that when the antenna receiving circuit is applied to 4G / 5G, the circuit receiving mode in the related technology can be changed to adapt to the high-density type circuit of 4G / 5G, thereby effectively changing the rigid fixed non-adjustable receiving mode. In addition, the switch can also be used to dynamically adjust the receiving sensitivity according to the PCB routing of the terminal, so that the sensitivity reaches an optimized state, thereby effectively improving the adaptability of the circuit.

An embodiment of the present disclosure further provides an antenna receiving circuit. The antenna receiving circuit includes: an antenna receiving module and a control module; the antenna receiving module includes an antenna common end, a driving distribution unit connected to the antenna common end, and a first driving distribution unit connected to the driving distribution unit. A switch; a drive distribution unit configured to determine a receiving frequency band; a first switch configured to select M different matching paths, where M is an integer greater than or equal to 2; a control module configured to control the first frequency based on the reception frequency band determined by the drive distribution unit A switch selects the corresponding matching path.

In one embodiment, M = 2, the two different matching paths are a zero-ohm path and a low-noise amplifier path; wherein, the zero-ohm path is provided with a zero-ohm resistor; and the low-noise amplifier path is provided for at least two paths. Wide-band low-noise amplifiers in different frequency bands.

FIG. 2B is a schematic structural diagram of an antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 2B, the antenna receiving module 21b includes an antenna common end 211b, and a driving allocation unit 212b connected to the antenna common end 211b and configured to determine a receiving frequency band. The first switch 213b connected to the drive distribution unit 212b and configured to select the zero-ohm path 214b or the low-noise amplifier path 215b, configured to select or connect the zero-ohm path 214b or the low-noise amplifier path 215b and select N different frequency bands The second switch 216b of the filter 217b; N is an integer of 2 or more.

In one embodiment, the control module 22b is configured to control the first switch 213b to select the zero-ohm path 214b or the low-noise amplifier path 215b and control the second switch 216b to select the filter 217b corresponding to the reception frequency band according to the determined reception frequency band; or, According to the determined receiving frequency band, the first switch 213b and the second switch 216b are controlled to select the zero-ohm path 214b or the low-noise amplifier path 215b, and the second switch 216b is controlled to select a filter corresponding to the receiving frequency band.

In the embodiment of the present disclosure, when the second switch 216b is connected to the zero-ohm path 214b and the low-noise amplifier path 215b, the zero-ohm path 214b or the low-noise amplifier path may be selected by the first switch 213b connected to the drive distribution unit 212b. 215b; when the second switch 216b is not connected to the zero-ohm path 214b and the low-noise amplifier path 215b, the control module needs to control the first switch 213b and the second switch 216b connected to the drive distribution unit 212b to select the zero-ohm path 214b or The low-noise amplifier path 215b, then the signal is output through the corresponding matching path, and the filter corresponding to the receiving frequency band is selected via the second switch 216b. In this way, the flexibility of the antenna receiving circuit design can be realized.

According to an embodiment of the present disclosure, a low-noise amplifier path provided with a zero-ohm resistance and a low-noise amplifier path provided with a wide-band low-noise amplifier suitable for at least two different frequency bands are replaced according to different frequency bands in FIGS. 1A and 1B. The set of multiple low-noise amplifier paths not only reduces the number of low-noise amplifiers, but also saves PCB layout space.

In the embodiment of the present disclosure, one low-noise amplifier path may be provided, and the low-noise amplifier path may be applicable to all different frequency bands; multiple low-noise amplifier paths may be provided, where each low-noise amplifier is applicable to at least two Different frequency bands.

When the low-noise amplifier path is applicable to all different frequency bands, the antenna receiving module in the antenna receiving circuit only needs to set one low-noise amplifier path; when the low-noise amplifier path is not applicable to all different frequency bands, multiple and corresponding Corresponding to multiple low-noise amplifier channels.

Taking the main channel antenna receiving module shown in FIG. 1A as an example, the path from top to bottom in FIG. 1A is set to correspond to the B1 band, B2 band, B3 band, B4 band, B5 band, and B6 band in sequence. In the technology, each low-noise amplifier can only deal with its corresponding frequency band, and can only set low-noise amplifiers corresponding to different frequency bands on each path based on the above-mentioned B1 to B6 frequency bands.

In contrast, FIG. 2C is a schematic diagram of a composition structure of another antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 2C, after the antenna common end of the antenna receiving module 21c of the antenna receiving circuit receives signals of different frequency bands, it determines the receiving frequency band through the drive distribution unit 212c, and selects the corresponding matching path through the first switch 213c. The path from top to bottom in FIG. 2C is set to correspond to the B1 frequency band, the B2 frequency band, the B3 frequency band, the B4 frequency band, the B5 frequency band, and the B6 frequency band in this order. A wideband low-noise amplifier path 1 and a wideband low-noise amplifier path 2 are respectively provided in the antenna receiving module 21c. Among them, the wideband low-noise amplifier path 1 214c is applicable to the B1 to B3 frequency bands, and the wideband low-noise amplifier path 2 215c is applicable. In the B4 to B6 band.

In the implementation process, when the drive distribution unit 211c determines that the receiving frequency band is any of the frequency bands B1 to B3, the first switch 212c can be used to select the zero-ohm path 213c or the wide-band low-noise amplifier path 214c; when the drive distribution unit 211c When it is determined that the receiving frequency band is any one of the B4 to B6 frequency bands, the zero-ohm path 213c or the wide-band low-noise amplifier path two 215c can be selected through the first switch 212c.

In one embodiment, the control module 22c is configured to control the first switch 212c to select a zero-ohm path 213c or a corresponding low-noise amplifier path and control the second switch 216c to select a corresponding reception frequency band according to the reception frequency band determined by the drive distribution unit 211c. Filter 217c; or control the first switch 212c and the second switch 216c to select the zero-ohm path 213c or the corresponding low-noise amplifier path according to the reception frequency band determined by the drive distribution unit 211c, and control the second switch 216c to select a different reception frequency band Corresponding filter.

FIG. 3A is a schematic structural diagram of an antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 3A, the antenna receiving circuit 301a includes a main path 302a, a diversity path 304a, and a control module 30a. The main path 302a and the diversity path 304a include an antenna receiving module 303a, and the antenna receiving module 303a may be described in the foregoing embodiment. Antenna receiving module (for example,

antenna receiving module

21, 21b, or 21c).

FIG. 3B is a schematic structural diagram of another antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 3B, the antenna receiving module 33b of the main set path 31b of the antenna receiving circuit 30b further includes: N duplexers 302b that match N different receiving frequency bands; each of the N duplexers The input end of the duplexer is connected to the drive distribution unit 301b, and the first end of the first switch 303b is selected to be connected to the output end of one of the N duplexers 302b under the control of the control module; correspondingly, the control The module is further configured to control the first end of the first switch 303b to select a corresponding receiving frequency band duplexer according to the determined receiving frequency band. In another embodiment, the output terminals of the N duplexers may also be connected to the first terminal of the first switch.

The antenna receiving module 34b of the diversity path 32b of the antenna receiving circuit 30b further includes: P variable tuning bandwidth bandpass filters 305b suitable for at least two different frequency bands; P is an integer greater than or equal to 1 and less than or equal to N; each A variable tuning bandwidth bandpass filter is applicable to at least two different frequency bands; the input end of each different variable tuning bandwidth bandpass filter is connected to the drive distribution unit 304b, and each variable tuning bandwidth bandpass filter The output terminal of is connected to the first terminal of the first switch 306b. In another embodiment, the corresponding variable tuning bandwidth band-pass filter may also be selected through the first end of the first switch.

In the following, the matching path in the main and diversity paths of the antenna receiving circuit is a zero-ohm path and a low-noise amplifier path, and a variable tuning bandwidth bandpass filter suitable for at least two different frequency bands is set in the diversity path as Examples are explained in more detail.

In the implementation process, the antenna receiving module of the main channel receives signals of different frequency bands from the common end of the antenna. After receiving the signal, the received signal enters a specific port, and then enters the duplexer corresponding to the signal in the frequency band. After the duplexer outputs, it enters the first switch.

When the output of the first switch is connected to the matching path where the zero-ohm resistor is located, and the output of the matching path where the zero-ohm resistor is located is connected to the input of the second switch, the signal enters from the output of the second switch to Corresponding filter, where the duplexer, the first switch, the pass-through circuit, the second switch and the filter are in the same receiving circuit path, that is, the zero-ohm path; when the output end of the first switch is provided with a wide-band low-noise When the input end of the amplifier is connected and the output end of the wideband low-noise amplifier is connected to the input end of the second switch, the signal enters the corresponding filter from the output end of the second switch, among which the duplexer, the first switch, The wide-band low-noise amplifier, the second switch, and the filter are in the same receiving circuit path, that is, the low-noise amplifier path.

The antenna receiving module of the diversity path receives signals of different frequency bands from the common end of the antenna. After the received signals are driven and distributed, they enter a specific port, and then enter a variable tuning bandwidth bandpass filter. The variable tuning bandwidth bandpass filter is based on the signal. The frequency band is adjusted to different bandwidths, and the signal enters the first switch after being filtered.

When the output of the first switch is connected to the matching path where the zero-ohm resistor is located, and the output of the matching path where the zero-ohm resistor is located is connected to the input of the second switch, the signal enters from the output of the second switch to Corresponding filter, where the variable tuning bandwidth band-pass filter, the first switch, the pass-through circuit, the second switch and the filter are in the same receiving circuit path, that is, the zero-ohm path; when the output end of the first switch is connected to the setting When the input end of the broadband low-noise amplifier is connected, and the output end of the broadband low-noise amplifier is connected to the input of the second switch, the signal enters the corresponding filter from the output of the first switch, where the variable tuning The band-pass filter, the first switch, the wide-band low-noise amplifier, the second switch, and the filter are in the same receiving circuit path, that is, the low-noise amplifier path.

Based on the foregoing embodiments, it can be known that the antenna receiving module of the main path and the antenna receiving module of the diversity path each include a zero-ohm path and a low-noise amplifier path. This may be referred to as the main set zero ohm path, the main set low noise amplifier path, and the diversity zero ohm path, and the diversity low noise amplifier path, respectively. The main receiving path and the diversity path are set in the antenna receiving circuit, and the antenna receiving module is set in the main receiving path and the diversity path. The switch between different paths can be realized, which can improve the overall performance and flexibility of the circuit design. .

An embodiment of the present disclosure further provides an antenna receiving circuit. The circuit includes an antenna receiving module and a control module. The antenna receiving module includes an antenna common end, a driving allocation unit connected to the antenna common end and configured to determine a receiving frequency band, and A first switch connected to the drive distribution unit and configured to select M different matching paths, and a second switch configured to select or connect M different matching paths and select N different receive frequency band filters; both M and N are Is an integer greater than or equal to 2.

In one embodiment, the control module is configured to control the first switch to select a corresponding matching path according to the determined receiving frequency band, and control the second switch to select a filter corresponding to the receiving frequency band; or, control the first switch and the first switch according to the determined receiving frequency band. The second switch selects a corresponding matching path, and controls the second switch to select a filter corresponding to a receiving frequency band.

In the embodiment of the present disclosure, the first end of the first switch in the antenna receiving circuit is connected to the drive distribution unit, and the second end of the first switch is used to select M different matching paths; the first end of the second switch Used to select or connect M different matching paths, and the second end of the second switch is used to select a filter corresponding to the receiving frequency band.

After the initial PCB routing design, debug the designed circuit, control the connection state of the first switch and the second switch in each antenna receiving module through the control module, and switch each antenna receiving module to a different matching path. And test the receiving sensitivity value of each antenna receiving module under each matching path, select the matching path with the best receiving sensitivity in each antenna receiving module, determine the matching path as the optimal receiving circuit path, and then The optimal receiving circuit path is combined according to a preset rule, and an association relationship between the combination and each different frequency band and the first switch and the second switch is established, and the association relationship is stored in the switch state list.

In the following, the antenna receiving circuit includes a main set path and a diversity path, and the antenna receiving module includes a zero-ohm path and a low-noise amplifier path.

In the debugging phase, the antenna receiving module of the main channel can be switched to two channels, and the antenna receiving module of the diversity channel can be switched to two channels, that is, the main zero-ohm channel, the main low-noise amplifier channel, and the diversity zero. Ohm path, diversity low noise amplifier path. Four combinations can be formed according to the above pathways, namely,

Combination 1: the main set of zero ohm paths, the diversity set of zero ohm paths;

Combination 2: the main set of zero ohm paths and the diversity of low noise amplifier paths;

Combination 3: the main set of low noise amplifier paths and the diversity zero ohm path;

Combination 4: the main low-noise amplifier path, the diversity low-noise amplifier path.

In the debugging phase, you can test the receiving sensitivity values of the signals in each frequency band under the conditions of the above combinations 1 to 4 by switching the connection status of the first switch and the second switch, and record where the receiving sensitivity value of each frequency band is the highest. The combination of the two forms a corresponding control instruction according to the combination, establishes an association relationship between the control instruction and the matching path corresponding to the combination, and an association relationship between the corresponding matching path and the first switch and the second switch. , And record the association relationship between the control instruction and each matching path, and the association relationship between each matching path and the first switch and the second switch to form a switch state list.

It should be noted that when a variable tuning bandwidth bandpass filter is set in the antenna receiving module, in the debugging stage, the bandwidth of the variable tuning bandwidth bandpass filter needs to be adjusted to correspond to the frequency band, and the bandwidth is adjusted. Establish an association relationship with the control instruction and set it in the switch status list.

In the implementation process, the preset switch state list is queried according to the determined receiving frequency band to obtain the connection state of the second end of the first switch; the corresponding matching path and the corresponding reception are connected according to the connection state of the first switch and the second switch. Band filter.

In the embodiment of the present disclosure, when the first end of the second switch is used to connect M different matching paths, the control module is further configured to: query the preset switch state list according to the determined receiving frequency band to obtain the first switch The connection state of the second end of the first switch is controlled according to the connection state of the second end of the first switch. The corresponding matching path of the second end of the first switch is controlled according to the determined receiving frequency band. filter.

In another embodiment, when the first end of the second switch is used to select M different matching paths, the control module is further configured to query a preset switch state list according to the determined receiving frequency band to obtain the first switch's The connection state of the second end and the connection state of the first end of the second switch; controlling the corresponding matching path of the second end of the first switch according to the connection state of the second end of the first switch; The connection state controls the first end of the second switch to be connected to the corresponding matching path; and the second end of the second switch is controlled to be connected to the filter corresponding to the reception frequency band according to the determined reception frequency band.

At present, the radio frequency receiving scheme of mobile terminals is that each frequency band enters through the antenna common end of TX_MODULE (Transmitter Module), and then after being assigned to a specific channel, the output enters a duplexer and a wideband low noise amplifier (Low NoNoise Amplifier (LNA) (LNA is used to meet the requirements of the antenna). After the LNA is output, a filter needs to be added. After the output of the filter, it enters the transceiver for down-conversion processing into IF I / Q signals, that is, IF input / output signals. Among them, I: in-phase indicates in-phase, Q: quadrature indicates quadrature, and the phase is 90 degrees from I, and then the signal is sent to the processor for demodulation. Because there are many frequency bands, there are also many amplifiers and filters on the path. The PCB layout and routing are also relatively compact, and some frequency bands cannot be directly added. Although this scheme can use specific filters and amplifiers for each frequency band, the isolation and filtering characteristics are better, but there are too many devices, and the PCB is limited. Unlimited additions are not allowed in the space.

Based on the above-mentioned related technologies, it is known that the layout in a limited space is very tight, and the PCB traces are very dense. It is very difficult to optimize the traces. The interference caused by some traces can only be solved by changing the version; LNA The frequency band cannot be added through the PCB layout, and antenna debugging is difficult. Based on the current situation, by changing the previous circuit design mode and using a solution to dynamically switch the receiving path through a switch, the problems of the previous LNA amplifier placement of the receiving path and the dense PCB routing were solved. The effective dynamic allocation can make the circuit The receiving path of a frequency band reaches an optimal receiving state. Not only save a lot of LNA low-noise amplifier devices, but also save PCB design space and improve the overall performance of circuit design.

In the embodiment of the present disclosure, the receiving circuit of the fixed frequency band in the related technology is adjusted by adding a switch, and then the receiving circuit mode is dynamically adjusted according to the routing form of the circuit. This circuit mode changes the previous fixed PCB routing untunable mode. The current circuit mode is Follow a fixed path for each frequency band. There are filters and amplifiers on the receiving path, and each frequency band has. Because there are so many frequency bands, the path is full of these devices. Once the PCB routing is fixed, the path The receiving sensitivity is fixed and can only be optimized by changing the path matching. If there is interference in the wiring, the problem can only be solved through revision. The design cost of the mobile terminal will be increased. Based on this consideration, the embodiments of the present disclosure use the switch mode to enable the dynamic combination mode of the amplifier and filter to improve the receiving sensitivity, which not only reduces the amplifier, filter and other components, but also It also saves PCB layout space and improves product design flexibility.

An embodiment of the present disclosure further provides an antenna receiving circuit. FIG. 4A is a schematic diagram of a composition structure of a main set path of an antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 4A, the main set path of the antenna receiving circuit in the embodiment of the present disclosure includes a main set antenna transmitting / receiving module 401a, and a plurality of dual pairs connected to the main set antenna transmitting / receiving module 401a and corresponding to different frequency bands. A duplexer 402a, a first switch 403a connected to a plurality of duplexers 402a, a wideband low noise amplifier 405a and a pass-through circuit 404a at the output end of the first switch 403a, and a wideband low noise amplifier 405a and a pass-through circuit 404a can be selected And a second switch 406a for selecting a plurality of filters 407a corresponding to different frequency bands, and a transceiver 408a connected to the outputs of the plurality of filters 407a.

FIG. 4B is a schematic diagram of a composition structure of a main path of another antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 4B, the main set path of the antenna receiving circuit in the embodiment of the present disclosure includes a main set antenna transmitting / receiving module 401b, and a plurality of dual antennas connected to the main set antenna transmitting / receiving module 401b and corresponding to different frequency bands. A duplexer 402b, a first switch 403b connected to a plurality of duplexers 402b, a wideband low noise amplifier 405b and a pass-through circuit 404b at the output end of the first switch 403b, and can be used to connect the output of the wideband low noise amplifier 405b and the passthrough circuit 404b And a second switch 406b for selecting a plurality of filters 407b corresponding to different frequency bands, and a transceiver 408b connected to the outputs of the plurality of filters 407b.

In the embodiment of the present disclosure, when the first switch and the second switch are controlled to select the zero-ohm path or the low-noise amplifier path according to the determined receiving frequency band, that is, both the output end of the first switch and the input end of the second switch are selectable. At the time of selection, as shown in FIG. 4A, the zero-ohm path and the low-noise amplifier path are completely independent of each other, and do not affect each other when performing signal transmission. Compared to the electrical connection between the zero-ohm path and the output of the low-noise amplifier in FIG. 4B, only the first switch is used to select the zero-ohm path or the low-noise amplifier path, which can prevent the low-noise amplifier from being burned out due to current backflow or Affects the life of the low noise amplifier.

When the first switch is controlled to select the zero-ohm path or the low-noise amplifier path according to the determined receiving frequency band, that is, the output end of the first switch is optional, and the input end of the second switch is connected to a wide-band low-noise amplifier and a pass-through circuit. When connected, as shown in FIG. 4B, the output terminals of the zero-ohm path and the low-noise amplifier path are electrically connected to the input end of the second switch. Compared with the independent arrangement between the zero-ohm path and the low-noise amplifier path in FIG. 4A, not only the layout space of the circuit design can be saved, but also the cost of the circuit design can be saved.

FIG. 4C is a schematic structural diagram of a diversity path of an antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 4C, the diversity path of the antenna receiving circuit in the embodiment of the present disclosure includes a diversity antenna receiving module 401c and a diversity antenna receiving module. A tunable wideband bandpass filter 402c connected to 401c, a first switch 403c connected to the tunable wideband bandpass filter 402c, a wideband low noise amplifier 405c and a pass-through circuit 404c at the output of the first switch 403c, which can be used for A second switch 406c connected to the output end of the wideband low noise amplifier 405c and the pass-through circuit 404c and used to select a plurality of filters 407c corresponding to different frequency bands, and a transceiver 408c connected to the output ends of the plurality of filters 407c.

FIG. 4D is a schematic structural diagram of a diversity path of another antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 4D, the diversity path of the antenna receiving circuit in the embodiment of the present disclosure includes a diversity antenna receiving module 401d, and a diversity antenna. A variable-tunable wideband band-pass filter 402d connected to the receiving module 401d, a first switch 403d connected to the variable-tunable wideband band-pass filter 402d, a wide-band low-noise amplifier 405d and a pass-through circuit 404d located at the output of the first switch 403d, A second switch 406d that can be used to connect the wide-band low-noise amplifier 405d and the output of the pass-through circuit 404d and to select multiple filters 407d corresponding to different frequency bands, and a transceiver 408d connected to the output of the multiple filters 407d .

In this embodiment, as shown in FIG. 4A, each single low-noise amplifier on the main set path in the related art is replaced with a low-band noise amplifier (LNA) 405a, and then passes through the first switch 403a. The second switch and the second switch 406a are dynamically selected for switching. The multiple of the two switches are connected to the duplexer 402a and the filter 407a of each frequency band. The single ends of the two switches are connected to a wide-band low-noise amplifier 405a and a pass-through circuit. 404a, which is used for dynamic selection and allocation of various frequency bands. The frequency range of the wideband low-noise amplifier 405a may be about 0.5 GHz to about 3 GHz.

In the embodiment of the present disclosure, the antenna receiving circuit can receive different frequency bands BX. Taking the received signal in the B1 frequency band as an example, when using the B1 frequency band, the signal is received from the antenna common end, and is output through the TX_MODULE (Transmitter Module, TX module) into the duplexer. Receiver (Module, RX module) enters the first switch after output, enters the second switch through a wideband low noise amplifier or pass-through circuit, enters the filter corresponding to the B1 band after the output of the second switch, and then enters the transceiver for data processing. In this process, the low-noise amplifier mode and the pass-through mode can be switched by a switch to select a path with optimized sensitivity.

In the process of application, the working process of the antenna receiving circuit includes the following seven steps.

In step 1, when a mobile terminal (for example, a mobile phone) receives a signal in the B1 frequency band, the signal enters the TX module from the common end of the antenna, and after driving allocation, enters a specific port and then enters the duplexer corresponding to the B1 frequency band.

In step two, the output from the RX module of the duplexer corresponding to the B1 frequency band enters the double-pole multi-throw radio frequency switch (the first switch), and then enters the wide-band LNA to amplify the signal, and then enters the second switch assignment and enters the B1 frequency band. The corresponding filter performs filtering, and then enters the transceiver for down conversion, and then sends the signal in the B1 frequency band to the processor for demodulation.

In step three, a value is obtained by testing the receiving sensitivity of the main set path, and then the amplifier is bypassed, and the next filter is directly connected through the zero ohm resistor. The receiving sensitivity is tested again, and the two values are compared to select the optimal path. To complete the matching of the receiving path.

In step four, at the same time, after the diversity receiving module receives the signal from the receiving port, it enters the variable-tunable wideband band-pass filter (Changeable Filter) and passes a single-pole double-throw switch (SPDT). According to the frequency band instruction, the variable-tunable wideband band-pass filter is tuned to the bandwidth of the received signal to be filtered, and then filtered through a wide-band low-noise amplifier or a zero-ohm resistor into the corresponding filter in the next stage, and sent to the transceiver for down-conversion. It is sent to the processor for demodulation.

In step five, after the initial PCB design is completed, debug, and the combination of each path is switched by switching between the main set path and the diversity path. That is, the main set has a low-noise amplifier mode and a zero-ohm pass-through mode. Diversity There are also low-noise amplifier mode and zero-ohm pass-through mode. There are four combinations in total. Diversity variable-tunable wideband bandpass filters are used to debug different bandwidths according to different frequency bands. Each combination is fixed at the initial stage of debugging, that is, in During the debugging process, an optimized channel is selected, and then the control logic of this frequency band channel and the variable tuning wideband bandpass filter width control logic are fixed, and the logic control is directly called during subsequent use.

In step 6, the receiving and debugging of each antenna frequency band is performed according to step 5. For each frequency band, an optimized path and a specific bandwidth logic of the variable-tunable wideband bandpass filter are finally selected to fix the logic control.

In step 7, after the debugging is completed, this logic is sent to the software for fixing. Later users use different frequency bands to switch between different channels and filter bandwidths, so that each receiving channel can achieve optimal reception. quality.

In another embodiment, the combination of each channel can be debugged according to the switching of the main channel and the diversity channel, and the relationship between each combination and the frequency band can be established.

As shown in Table 1, Table 1 is a logic control table of the antenna receiving circuit according to the embodiment of the present disclosure. In Table 1, the shoot-through represents a zero-ohm shoot-through circuit, and the LNA represents a low-noise amplifier.

Table 1

In this embodiment, "0" indicates that the switch is connected to a zero-ohm pass-through circuit, "1" indicates that the connection terminal of the switch is switched to a wide-band low-noise amplifier circuit, and B1, B2, B3, ..., B40, and B41 respectively indicate different Frequency band, "_0000, _0001, _0010, ..., _1101, _1110" respectively represent different control instructions.

When the received signal is in the B1 frequency band, send a control instruction "_0000" to switch the main set path in the antenna receiving circuit to the through mode and the diversity path to the low noise amplifier mode; when the received signal is in the B2 frequency band, send the control command "_0001", switch the main set path in the antenna receiving circuit to low-noise amplifier mode and switch the diversity path to pass-through mode; when the received signal is in the B3 frequency band, send a control command "_0010" to switch the main path in the antenna receiving circuit Both the collection channel and the diversity channel are switched to the through mode; when the received signal is in the B4 frequency band, a control command "_0011" is sent to switch the main collection channel and the diversity channel in the antenna receiving circuit to the low noise amplifier mode.

When the received signal is in the B5 frequency band, send a control command "_0100" to switch the main set path in the antenna receiving circuit to the through mode and the diversity path to the low noise amplifier mode; when the received signal is in the B7 frequency band, send the control command "_0101", switch the main set path in the antenna receiving circuit to the low noise amplifier mode, and switch the diversity path to the pass-through mode; when the received signal is in the B8 frequency band, send a control instruction "_0110" to switch the main set in the antenna receiving circuit Both the collection channel and the diversity channel are switched to the through mode; when the received signal is in the B12 frequency band, a control command “_0111” is sent to switch the main collection channel and the diversity channel in the antenna receiving circuit to the low noise amplifier mode.

When the received signal is in the B17 frequency band, send a control instruction "_1000" to switch the main set path in the antenna receiving circuit to the through mode and the diversity path to the low noise amplifier mode; when the received signal is in the B20 frequency band, send the control command "_1001", switch the main channel in the antenna receiving circuit to the low-noise amplifier mode, and switch the diversity channel to the through mode; when the received signal is in the B28 band, send a control instruction "_1010" to switch the main channel in the antenna receiving circuit Both the collection channel and the diversity channel are switched to the through mode; when the received signal is in the B34 frequency band, a control command "_1011" is sent to switch the main collection channel and the diversity channel in the antenna receiving circuit to the low noise amplifier mode.

When the received signal is in the B38 band, send a control instruction "_1111" to switch the main set path in the antenna receiving circuit to the through mode and the diversity path to the low noise amplifier mode; when the received signal is in the B39 band, send the control command "_1100", switch the main channel in the antenna receiving circuit to the low noise amplifier mode, and switch the diversity channel to the through mode; when the received signal is in the B40 band, send the control instruction "_1101" to switch the main channel in the antenna receiving circuit Both the collection channel and the diversity channel are switched to the through mode; when the received signal is in the B41 frequency band, a control instruction "_1110" is sent to switch the main collection channel and the diversity channel in the antenna receiving circuit to the low noise amplifier mode.

In another aspect, the present disclosure also provides a switching method of an antenna receiving circuit. FIG. 5 is a schematic flowchart of a switching method of an antenna receiving circuit according to an embodiment of the present disclosure. As shown in FIG. 5, in some embodiments, the method may include steps S501 and S502.

In step S501, a receiving frequency band of the antenna receiving module is determined by a driving allocation unit of the antenna receiving module of the antenna receiving circuit.

In step S502, the first switch is controlled to select a corresponding matching path according to the receiving frequency band determined by the drive allocation unit.

In one embodiment, the antenna receiving circuit includes: an antenna receiving module and a control module; the antenna receiving module includes an antenna common end, a driving distribution unit connected to the antenna common end, and connected to the driving distribution unit and configured to The first switch of M different matching paths is selected, and M is an integer greater than or equal to 2.

In other embodiments, the antenna receiving module further includes a second switch configured to select or connect M different matching paths and select N filters of different frequency bands, where N is an integer greater than or equal to 2; the method further includes: The method includes: controlling the second switch to select a filter corresponding to the receiving frequency band according to the receiving frequency band; or controlling the second switch to select a corresponding matching path and controlling an IP address according to the receiving frequency band determined by the driving allocation unit. The second switch selects a filter corresponding to the receiving frequency band.

In other embodiments, the first end of the first switch is connected to the drive distribution unit, and the second end of the first switch is used to select M different matching paths; correspondingly, the The control of the first switch to select the corresponding matching path by the receiving frequency band determined by the driving allocation unit includes: querying a preset switching state list according to the receiving frequency band to obtain the connection state of the second end of the first switch; The connection state of the second end of the first switch controls the second end of the first switch to be connected to the corresponding matching path.

In other embodiments, the first end of the first switch is connected to the drive distribution unit, and the second end of the first switch is used to select M different matching paths; the first end of the second switch Terminal is used to select M different matching paths, and the second terminal of the second switch is used to select filters of N different frequency bands; correspondingly, the controlling the second switch to select and The filter corresponding to the receiving frequency band includes: controlling a second end of the second switch to connect to a filter corresponding to the receiving frequency band according to the determined receiving frequency band; and the determining according to the driving allocation unit The receiving frequency band controlling the second switch to select a corresponding matching path and controlling the second switch to select a filter corresponding to the receiving frequency band includes querying a preset switching state list according to the receiving frequency band to obtain the first switching state list. The connection state of the second end of a switch and the connection state of the first end of the second switch; controlling the connection of the second end of the first switch according to the connection state of the second end of the first switch Corresponding matching path; controlling the first terminal selected by the second switch to connect to the corresponding matching path according to the connection state of the first end of the second switch; controlling the first switch of the second switch according to the determined receiving frequency band The two ends are connected to a filter corresponding to the receiving frequency band.

In another aspect, the present disclosure also provides a mobile terminal. FIG. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present disclosure. As shown in FIG. 6, in some embodiments, the mobile terminal 600 may include at least a processor 601, a storage medium 602 configured to store executable instructions, and the antenna receiving circuit 603 according to any one of the foregoing embodiments. The controller 601 is configured to execute a stored executable instruction, and the executable instruction is configured to execute a switching method of an antenna receiving circuit provided by any one of the foregoing embodiments.

It should be noted that the mobile terminals involved in the embodiments of the present disclosure may be mobile phones (mobile phones), tablet computers, PDAs, mobile Internet devices (MID), wearable devices (for example, smart watches can be touched and moved Terminal equipment) and so on.

In the embodiment of the present disclosure, if the above-mentioned switching method of the antenna receiving circuit is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present disclosure that are essentially or contribute to the prior art may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for A computer device (which may be a personal computer, a server, or a network device, etc.) is caused to execute all or part of the methods described in various embodiments of the present disclosure. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (Read Only Memory, ROM), a magnetic disk, or an optical disk, which can store program codes. As such, embodiments of the present disclosure are not limited to any particular combination of hardware and software.

In another aspect, the present disclosure also provides a computer-readable storage medium having computer-executable instructions stored therein, the computer-executable instructions configured to perform switching of an antenna receiving circuit provided by an embodiment of the present disclosure. method.

It should be noted that the above-mentioned embodiments of the present disclosure can be used in any scenario. This solution is improved in the receiving path, optimizing too many devices in the receiving path and occupying PCB space. In this solution, A large number of devices are saved, which saves costs, and enables the receiving path to be more flexibly debugged, making the receiving index more flexible. Through the above embodiments, the receiving of the mobile terminal no longer needs to use too many components and occupy too much PCB space for debugging. In addition, during the debugging process, the flexibility is high, and the wiring can be adjusted. The interference of the wiring can also be modified. It does not need to be modified through revisions. The switch mode of the mobile terminal in the past has been changed, which saves a lot of components In addition, the debugging process is flexible and convenient, and the channel change can be controlled by software, so that an optimal channel can be selected in a specific frequency band to meet the receiving sensitivity index. The above embodiment can improve the communication capability of the mobile terminal.

Those skilled in the art should understand that the embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Therefore, the present disclosure may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) containing computer-usable program code therein.

The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, so that the instructions generated by the processor of the computer or other programmable data processing device are used to generate instructions A device for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a particular manner such that the instructions stored in the computer-readable memory produce a manufactured article including the instruction device, the instructions The device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

It should be understood that “an embodiment” or “an embodiment” mentioned throughout the specification means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present disclosure. Thus, the appearances of "in one embodiment" or "in an embodiment" appearing throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present disclosure, the size of the sequence numbers of the above processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present disclosure. The implementation process constitutes any limitation. The sequence numbers of the embodiments of the present disclosure are only for description, and do not represent the advantages and disadvantages of the embodiments.

It should be noted that, in this article, the terms "including", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, It also includes other elements not explicitly listed, or elements inherent to such a process, method, article, or device. Without more restrictions, an element limited by the sentence "including a ..." does not exclude that there are other identical elements in the process, method, article, or device that includes the element.

In the several embodiments provided by the present disclosure, it should be understood that the disclosed device and method may be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. In actual implementation, there may be another division manner. For example, multiple modules or components may be combined, or Can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed components are coupled, or directly coupled, or communicated with each other through some interfaces. The indirect coupling or communication connection of the device or module may be electrical, mechanical, or other forms. of.

The modules / units described above as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules; they may be located in one place or distributed to multiple network modules / Unit; some or all of the modules / units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module / unit in each embodiment of the present disclosure may be integrated into one processing module / unit block, or each module / unit may be separately used as a module / unit, or two or more of them may be used. Modules / units are integrated in one module / unit; the above-mentioned integrated modules / units can be implemented either in the form of hardware or in the form of hardware plus software functional modules / units.

A person of ordinary skill in the art may understand that all or part of the steps of the foregoing method embodiments may be implemented by a program instructing related hardware. The foregoing program may be stored in a computer-readable storage medium. When the program is executed, the execution includes Steps of the above method embodiment; and the foregoing storage medium includes: various types of media that can store program codes, such as a mobile storage device, a read-only memory (Read Only Memory, ROM), a magnetic disk, or an optical disc.

Alternatively, if the integrated module of the present disclosure is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present disclosure that are essentially or contribute to the prior art may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for A server is caused to perform all or part of the methods described in various embodiments of the present disclosure. The foregoing storage media include: various types of media that can store program codes, such as a mobile storage device, a ROM, a magnetic disk, or an optical disc.

The above is only an implementation of the present disclosure, but the scope of protection of the present disclosure is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this disclosure. Covered within the scope of this disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

An antenna receiving circuit includes: an antenna receiving module and a control module;

The antenna receiving module includes an antenna common end, a driving distribution unit connected to the antenna common end, and a first switch connected to the driving distribution unit; wherein,

The drive allocation unit is configured to determine a receiving frequency band;

The first switch is configured to select M different matching paths, where M is an integer greater than or equal to 2;

The control module is configured to control the first switch to select a corresponding matching path according to a receiving frequency band determined by the driving allocation unit.
The circuit according to claim 1, wherein the antenna receiving module further comprises a second switch;

The second switch is configured to select or connect M different matching paths and select N filters in different frequency bands, where N is an integer greater than or equal to 2;

The control module is configured to control the second switch to select a filter corresponding to the reception frequency band according to the reception frequency band.
The circuit according to claim 1, wherein the antenna receiving module further comprises a second switch;

The second switch is configured to select or connect M different matching paths and select N filters in different frequency bands, where N is an integer greater than or equal to 2;

The control module is configured to control the second switch to select a corresponding matching path according to the receiving frequency band, and control the second switch to select a filter corresponding to the receiving frequency band.
The circuit according to claim 2 or 3, wherein a first end of the first switch is connected to the drive distribution unit, and a second end of the first switch is configured to select M different matching paths;

A first end of the second switch is configured to select or connect M different matching paths, and a second end of the second switch is configured to select N filters of different frequency bands.
The circuit according to any one of claims 1 to 3, wherein M = 2, and the M different matching paths include a zero-ohm path and a low-noise amplifier path; wherein,

A zero-ohm resistance is provided on the zero-ohm path;

A wide-band low-noise amplifier suitable for at least two different frequency bands is arranged on the low-noise amplifier path.
The circuit according to claim 4, wherein the antenna receiving circuit includes a main set path and a diversity path, and the main set path and the diversity path each include the antenna receiving module.
The circuit according to claim 4, wherein the antenna receiving module of the main set path further comprises: N duplexers matching the N different frequency bands;

An input end of each of the N duplexers is connected to the drive distribution unit, and a first end of the first switch is configured to select the N duplexers under the control of the control module. The output of one of the duplexers is connected;

In addition, the control module is further configured to control the first end of the first switch to select a duplexer corresponding to a receiving frequency band according to the determined receiving frequency band.
The circuit according to claim 6 or 7, wherein the antenna receiving module of the diversity path further comprises: P variable tuning bandwidth band-pass filters; P is an integer greater than or equal to 1 and less than or equal to N;

Each of the P variable tuning bandwidth bandpass filters is applicable to at least two different frequency bands;

The input terminals of the different variable tuning bandwidth bandpass filters in the P variable tuning bandwidth bandpass filters are connected to the drive distribution unit, and each of the P variable tuning bandwidth bandpass filters is An output terminal of a variable tuning bandwidth band-pass filter is connected to the first terminal of the first switch.
The circuit according to claim 4, wherein when the first end of the second switch is configured to connect M different matching paths, the control module is further configured to:

Querying a preset switch state list according to the determined receiving frequency band to obtain the connection state of the second end of the first switch;

Controlling the corresponding matching path connected to the second end of the first switch according to the connection state of the second end of the first switch;

Controlling a second end of the second switch according to the determined receiving frequency band to connect a filter corresponding to the receiving frequency band.
The circuit according to claim 4, wherein when the first end of the second switch is configured to select M different matching paths, the control module is further configured to:

Querying a preset switch state list according to the determined receiving frequency band, to obtain the connection state of the second end of the first switch and the connection state of the first end of the second switch;

Controlling the corresponding matching path connected to the second end of the first switch according to the connection state of the second end of the first switch;

Controlling the corresponding matching path of the first end of the second switch according to the connection state of the first end of the second switch;

Controlling a second end of the second switch according to the determined receiving frequency band to connect a filter corresponding to the receiving frequency band.
A switching method of an antenna receiving circuit, the antenna receiving circuit includes an antenna receiving module, the antenna receiving module includes an antenna common end, a drive distribution unit connected to the antenna common end, and is connected and configured To select the first switches of M different matching paths, M is an integer greater than or equal to 2; the method includes:

Determining a receiving frequency band of the antenna receiving module through a driving allocation unit of an antenna receiving module of the antenna receiving circuit;

Controlling the first switch to select a corresponding matching path according to a receiving frequency band determined by the driving allocation unit.
The method according to claim 11, wherein the antenna receiving module further comprises a second switch configured to select or connect M different matching paths and select N filters of different frequency bands, where N is an integer greater than or equal to two ;

The method further includes controlling the second switch to select a filter corresponding to the receiving frequency band according to the receiving frequency band.
The method according to claim 11, wherein the antenna receiving module further comprises a second switch configured to select or connect M different matching paths and select N different frequency band filters, where N is an integer greater than or equal to two ;

The method further includes: controlling the second switch to select a corresponding matching path according to a receiving frequency band determined by the driving allocation unit, and controlling the second switch to select a filter corresponding to the receiving frequency band.
The method according to claim 11, wherein a first end of the first switch is connected to the drive distribution unit, and a second end of the first switch is configured to select M different matching paths;

The controlling the first switch to select a corresponding matching path according to a receiving frequency band determined by the drive allocation unit includes:

Querying a preset switch state list according to the receiving frequency band to obtain the connection state of the second end of the first switch;

And controlling the corresponding matching path of the second end of the first switch according to the connection state of the second end of the first switch.
The method according to claim 12, wherein a first end of the first switch is connected to the drive distribution unit, and a second end of the first switch is configured to select M different matching paths; The first ends of the two switches are configured to select M different matching paths, and the second ends of the second switches are configured to select N different frequency band filters;

The controlling the second switch to select a filter corresponding to the receiving frequency band according to the receiving frequency band includes controlling the second end connection of the second switch to correspond to the receiving frequency band according to the determined receiving frequency band Filter.
The method according to claim 13, wherein a first end of the first switch is connected to the drive distribution unit, and a second end of the first switch is configured to select M different matching paths; The first ends of the two switches are configured to select M different matching paths, and the second ends of the second switches are configured to select N different frequency band filters;

The step of controlling the second switch to select a corresponding matching path according to a receiving frequency band determined by the drive allocation unit, and controlling the second switch to select a filter corresponding to the receiving frequency band includes:

Querying a preset switch state list according to the receiving frequency band, to obtain a connection state of a second end of the first switch and a connection state of a first end of the second switch;

Controlling the corresponding matching path connected to the second end of the first switch according to the connection state of the second end of the first switch;

Controlling the corresponding matching path of the first end of the second switch according to the connection state of the first end of the second switch;

Controlling a second end of the second switch according to the determined receiving frequency band to connect a filter corresponding to the receiving frequency band.
A mobile terminal includes a processor, a storage medium configured to store executable instructions, and the antenna receiving circuit according to any one of claims 1 to 10, wherein:

The processor is configured to execute stored executable instructions, and the executable instructions are configured to execute the method according to any one of claims 11 to 16 above.
A computer-readable storage medium having computer-executable instructions stored thereon, the computer-executable instructions configured to execute the method according to any one of claims 11 to 16 above.