Diversity reception circuit and electronic device
By setting up a selection unit, a matching selection module, and a frequency selection module in the diversity receiving circuit, the filtering and frequency band separation of radio frequency signals are realized, which solves the problems of large area occupation and device redundancy of integrated chips, improves communication throughput and reduces costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI WINGTECH INFORMATION TECH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-07-07
AI Technical Summary
In existing technologies, diversity receiver integrated chips occupy a large area, are prone to stress problems, and have redundant components, resulting in poor practicality and high cost when improving communication throughput.
A diversity receiving circuit is adopted. By setting a first selection unit, a matching selection module and a first frequency selection module, the radio frequency signal is filtered and the frequency band is separated. The first and second radio frequency signals are output respectively and filtered to meet the target signal of the preset frequency band.
While increasing communication throughput, it reduces the cost of diversity receiving circuits and improves practicality, avoiding stress problems associated with integrated chips.
Smart Images
Figure CN224473306U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of radio frequency communication technology, and to, but is not limited to, a diversity receiving circuit and an electronic device. Background Technology
[0002] With the rapid development of communication technology, more and more wireless devices have emerged, such as mobile phones and tablets. When these devices have communication needs, they need to receive corresponding radio waves and then process the signals to complete wireless communication.
[0003] In related technologies, to improve communication throughput, these terminal devices are equipped with multiple communication channels to receive radio waves of different frequency bands. Specifically, technicians often use corresponding diversity receiver integrated chips to enable several channels to receive radio waves simultaneously. For example, the diversity receiver integrated chip can be an LFEM (LNA BANK+FEM) or a DIFEM (Duplexer integrated FEM).
[0004] However, in related technical solutions, because all chips in an integrated chip are integrated together, it occupies a large area and is prone to stress problems, thus limiting the design of components. Furthermore, the functional components within an integrated chip often exhibit redundancy in practical applications. This results in related technical solutions being less practical and more costly when higher communication throughput is required. Utility Model Content
[0005] In view of this, the diversity receiving circuit and electronic device provided in the embodiments of this application can achieve the effect of improving communication throughput while taking into account the practicality and cost of the diversity receiving circuit. The diversity receiving circuit and electronic device provided in the embodiments of this application are implemented as follows:
[0006] In one aspect of this application, a diversity receiving circuit is provided, the circuit comprising: a first selection unit, a matching selection module, and a first frequency selection module;
[0007] The first output terminal of the first selection unit is connected to the input terminal of the matching selection module, and each output terminal of the matching selection module is connected to each input terminal of the first frequency selection module respectively.
[0008] The first selection unit is used to receive radio frequency signals and output the radio frequency signals to the matching selection module.
[0009] The matching selection module is used to filter the received radio frequency signal to obtain a first radio frequency signal and at least one second radio frequency signal, and to send the first radio frequency signal and each of the second radio frequency signals to the first frequency selection module respectively, wherein the frequency bands of the first radio frequency signal and each of the second radio frequency signals are different from each other;
[0010] The first frequency selection module is used to filter the received first radio frequency signal and / or the second radio frequency signal to obtain and output a first target signal that satisfies the first preset frequency band.
[0011] Optionally, the first frequency selection module includes multiple frequency selection channels;
[0012] The input terminal of each frequency selection channel is connected to the corresponding output terminal of the matching selection module.
[0013] Each of the frequency selection channels is used to filter the received first radio frequency signal or the second radio frequency signal to obtain and output the first target signal.
[0014] Optionally, the plurality of frequency selection channels includes one first frequency selection channel and two second frequency selection channels;
[0015] The input terminal of the first frequency selection channel is connected to the first output terminal of the first selection unit, and the input terminals of each of the second frequency selection channels are respectively connected to the output terminal of the matching selection module.
[0016] Optionally, when the first frequency selection module includes at least three frequency selection channels, the matching selection module includes: a matching unit and a second selection unit;
[0017] The input terminal of the matching unit is connected to the first output terminal of the first selection unit, the first output terminal of the matching unit is connected to the input terminal of the second selection unit, and each second output terminal of the matching unit and each output terminal of the second selection unit are respectively connected to the input terminal of each frequency selection channel.
[0018] The matching unit is used to filter the received radio frequency signal to obtain the first radio frequency signal and each of the second radio frequency signals, send the first radio frequency signal to the second selection unit, and send each of the second radio frequency signals to the first frequency selection channel, wherein the first frequency selection channel is the frequency selection channel connected to the matching unit among the frequency selection channels.
[0019] The second selection unit is used to send the received first radio frequency signal to a second frequency selection channel, which is the frequency selection channel connected to the second selection unit among the frequency selection channels.
[0020] Optionally, the circuit further includes: multiple low-pass filter networks;
[0021] The input terminals of each low-pass filter network are connected to the second selection unit, and the output terminals of each low-pass filter network are connected to each of the second frequency selection channels.
[0022] Optionally, the matching unit further includes: a high-pass filter and a low-pass filter;
[0023] The input terminal of the high-pass filter and the input terminal of the low-pass filter are respectively connected to the first output terminal of the first selection unit, the output terminal of the low-pass filter is connected to the input terminal of the second selection switch, and the output terminal of the high-pass filter is connected to the input terminal of the first frequency selection channel.
[0024] The high-pass filter is used to filter the received radio frequency signal to obtain the first radio frequency signal;
[0025] The low-pass filter is used to filter the received radio frequency signal to obtain the second radio frequency signal, wherein the frequency band of the first radio frequency signal is greater than the frequency band of the second radio frequency signal.
[0026] Optionally, the first selection unit and the second selection unit are both single-pole multi-throw switches.
[0027] Optionally, the circuit further includes: a second frequency selection module;
[0028] The input terminal of the second frequency selection module is connected to the second output terminal of the first selection switch;
[0029] The second frequency selection module is used to filter the received radio frequency signal to obtain a second target signal that meets the second preset frequency band.
[0030] Optionally, the circuit further includes: a signal amplification module;
[0031] Each input terminal of the signal amplification module is connected to each output terminal of the first frequency selection module and / or the output terminal of the second frequency selection module, respectively.
[0032] The signal amplification module is used to amplify the first target signal and / or the second target signal.
[0033] In another aspect of the embodiments of this application, an electronic device is also provided, which includes at least any of the diversity receiving circuits provided in the embodiments of this application.
[0034] The diversity receiving circuit and electronic device provided in this application embodiment, by setting a first selection unit, a matching selection module, and a first frequency selection module in the diversity receiving circuit, specifically, connects the first output terminal of the first selection unit to the input terminal of the matching selection module, and each output terminal of the matching selection module is respectively connected to each input terminal of the first frequency selection module. The first selection unit is used to receive radio frequency (RF) signals and output the RF signals to the matching selection module; the matching selection module is used to filter the received RF signals to obtain a first RF signal and at least one second RF signal, and respectively send the first RF signal and each second RF signal to the first frequency selection module, wherein the frequency bands of the first RF signal and each second RF signal are different from each other; the first frequency selection module is used to filter the received first RF signal and / or the second RF signal to obtain and output a first target signal that satisfies a first preset frequency band.
[0035] It is understood that the diversity receiving circuit provided in this application only requires the combination of a first selection unit, a matching selection module, and a first frequency selection module in its circuit design to achieve the purpose of frequency band carrier aggregation or ENDC for multiple radio frequency signals of different frequency bands. That is, it can achieve the same function as the integrated solutions provided in related technologies (such as LFEM or DIFEM). Moreover, the diversity receiving circuit provided in this application does not need to be integrated on a single chip, which is less likely to cause stress and facilitates component design. At the same time, the solution in this application uses fewer components and has the advantage of lower cost.
[0036] In this way, it is possible to improve communication throughput while taking into account the practicality and cost of diversity receiving circuits, thereby at least partially solving the technical problems raised in the background art. Attached Figure Description
[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0038] Figure 1 A schematic diagram of the structure of the first diversity receiving circuit provided in the embodiments of this application;
[0039] Figure 2 This is a schematic diagram of the structure of a second diversity receiving circuit provided in an embodiment of this application;
[0040] Figure 3 A schematic diagram of the structure of the third diversity receiving circuit provided in the embodiments of this application;
[0041] Figure 4 A schematic diagram of the structure of the fourth diversity receiving circuit provided in the embodiments of this application;
[0042] Figure 5 A schematic diagram of the structure of the fifth diversity receiving circuit provided in the embodiments of this application;
[0043] Figure 6 A schematic diagram of the sixth diversity receiving circuit provided in the embodiments of this application;
[0044] Figure 7 A schematic diagram of the structure of the seventh diversity receiving circuit provided in the embodiments of this application;
[0045] Figure 8 A schematic diagram of the structure of the eighth diversity receiving circuit provided in the embodiments of this application;
[0046] Figure 9 A schematic diagram of the structure of the ninth diversity receiving circuit provided in the embodiments of this application;
[0047] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation
[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.
[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.
[0050] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.
[0051] It should be noted that the terms "first, second, third" used in the embodiments of this application are used to distinguish similar or different objects and do not represent a specific order of objects. It can be understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.
[0052] In related technologies, to improve communication throughput, these terminal devices are equipped with multiple communication channels to receive radio waves in different frequency bands. Specifically, technicians often use corresponding diversity receiver integrated chips to enable several channels to receive radio waves simultaneously. For example, the diversity receiver integrated chip can be an LFEM (LNA BANK+FEM) or a DIFEM (Duplexer integrated FEM).
[0053] However, in related technical solutions, because all chips in an integrated chip are integrated together, it occupies a large area and is prone to stress problems, thus limiting the design of components. Furthermore, the functional components within an integrated chip often exhibit redundancy in practical applications. This results in related technical solutions being less practical and more costly when higher communication throughput is required.
[0054] To address this, this application provides a diversity receiving circuit. This circuit includes a first selection unit, a matching selection module, and a first frequency selection module. Specifically, the first output of the first selection unit is connected to the input of the matching selection module, and each output of the matching selection module is connected to a corresponding input of the first frequency selection module. The first selection unit receives a radio frequency (RF) signal and outputs the RF signal to the matching selection module. The matching selection module filters the received RF signal to obtain a first RF signal and at least one second RF signal, and sends the first RF signal and each of the second RF signals to the first frequency selection module. The first RF signal and each of the second RF signals have different frequency bands. The first frequency selection module filters the received first RF signal and / or the second RF signal to obtain and output a first target signal that satisfies a first preset frequency band. This achieves the effect of increasing communication throughput while maintaining the practicality and cost-effectiveness of the diversity receiving circuit.
[0055] This application uses a diversity receiving circuit applied in an electronic device as an example for illustration. However, it does not imply that this application's embodiments can only be applied to diversity receiving of radio frequency signals in electronic devices.
[0056] Exemplary examples show that the electronic device may include, but is not limited to, mobile phones, wearable devices (such as smartwatches, smart bracelets, smart glasses, etc.), tablet computers, laptops, in-vehicle terminals, PCs (Personal Computers), etc. The electronic device may include any possible components such as antennas, displays, processors, and storage media. This application does not limit the scope of the embodiments described herein.
[0057] The diversity receiving circuit provided in the embodiments of this application will be explained in detail below.
[0058] Figure 1 This is a schematic diagram of a diversity receiving circuit provided in this application. This method can be applied to the aforementioned electronic equipment. See also... Figure 1 This application provides a diversity receiving circuit 100, which includes a first selection unit 101, a matching selection module 102, and a first frequency selection module 103.
[0059] The first output terminal of the first selection unit 101 is connected to the input terminal of the matching selection module 102, and each output terminal of the matching selection module 102 is connected to each input terminal of the first frequency selection module 103 respectively.
[0060] The first selection unit 101 is used to receive radio frequency signals and output the radio frequency signals to the matching selection module 102.
[0061] Optionally, the first selection unit 101 can be a single-pole multi-throw switch or any other possible switching unit. Furthermore, the radio frequency signal can include radio frequency signals from different frequency bands in the environment where the first selection unit 101 is located, or radio frequency signals from various frequency bands that can be received by the antennas connected to the first selection unit 101. This application embodiment does not limit this aspect.
[0062] For example, the first selection unit 101 can be a single-pole eight-throw (SP8T) switch, which may have one RF signal input terminal and eight RF signal output terminals, and may also have three GPIO ports to control the selection of the desired RF channel. In some scenarios, signals from frequency bands that do not need to operate simultaneously can be routed to different output terminals or switching channels, such as B5. 、 Signals in frequency bands such as B8, B28, and B40; and, to ensure that frequency bands that need to operate simultaneously use the same output terminal or the same switching channel, for example, B1... 、 Signals in frequency bands such as B3, B34, B39, and B41. Additionally, relevant technical personnel can perform corresponding triggering operations to control the first selection unit 101 to select the desired radio frequency channel or send corresponding radio frequency signals; this application embodiment does not limit this.
[0063] In other words, the first selection unit 101 may receive a signal containing B5. 、 B8, B28, B40, B1 、 Radio frequency signals in any possible frequency band, such as B3, B34, B39, and B41, are selected. When the first selection unit 101 outputs to the matching selection module 102, it can select B1... 、 The radio frequency signals of frequency bands such as B3, B34, B39, and B41 that need to work simultaneously can be output to the matching selection module 102.
[0064] For example, in practical applications, the first selection unit 101 can be used to optimize the quality of signal reception. For instance, when the first selection unit 101 receives radio frequency signals from multiple signal sources, it can compare the signal strengths of the radio frequency signals from different sources and then switch the port currently connected to the first frequency selection module 103 to select the optimal channel to combat multipath fading. For another example, when the currently connected main signal channel malfunctions or its performance degrades, the first selection unit 101 can switch the port currently connected to the matching selection module 102 to switch to a backup signal channel. For yet another example, the first selection unit 101 can switch different circuit branches to adjust functional modes such as bandwidth switching and anti-interference modes, based on signal modulation and demodulation requirements. Performance degradation can refer to situations where the signal-to-noise ratio (SNR) of the current channel is lower than a preset threshold or the bit error rate (BER) exceeds the allowable range. This application embodiment does not limit this.
[0065] In this embodiment, the matching selection module 102 is used to filter the received radio frequency signal to obtain a first radio frequency signal and at least one second radio frequency signal, and to send the first radio frequency signal and each of the second radio frequency signals to the first frequency selection module 103 respectively.
[0066] Optionally, the matching selection module 102 can be a single device or a combination of multiple devices. For example, the matching selection module 102 may include a corresponding filtering unit to split the received radio frequency signal into a first radio frequency signal and a second radio frequency signal; the matching selection module 102 may also include a corresponding selection unit to switch the signal channel; the matching selection module 102 may also include a corresponding matching network to adjust the ratio between current and voltage to achieve impedance matching. This application does not limit the scope of the embodiments described herein.
[0067] In this embodiment, the first frequency selection module 103 is used to filter the received first radio frequency signal and / or the second radio frequency signal to obtain and output a first target signal that satisfies the first preset frequency band.
[0068] Optionally, the first radio frequency signal and each of the second radio frequency signals are obtained by the matching selection module 102 performing diversity processing on the radio frequency signal. Diversity processing can be any possible operation such as spatial diversity, polarization diversity, or frequency diversity on the radio frequency signal. In this embodiment, the first radio frequency signal and each of the second radio frequency signals are obtained by the matching selection module 102 performing frequency diversity operation on the radio frequency signal; this embodiment of the application is not limited in this respect.
[0069] Optionally, the first radio frequency signal and each of the second radio frequency signals may be in different frequency bands. For example, the first radio frequency signal may be a relatively low-frequency intermediate frequency radio frequency signal such as the B1, B3, B34 and / or B39 bands, and the second radio frequency signal may be a relatively high-frequency radio frequency signal such as the B41 band. This application does not limit this.
[0070] In this embodiment, the first frequency selection module 103 may include multiple frequency selection channels, and each frequency selection channel may correspond to a frequency band that needs to operate simultaneously. For example, if the frequency bands that need to operate simultaneously include B1, B3, B34, B39, and B41, then the first frequency selection module 103 may include a frequency selection channel corresponding to the B1 / B3 frequency band, a frequency selection channel corresponding to the B34 / B39 frequency band, and a frequency selection channel corresponding to the B41 frequency band. This embodiment does not limit this aspect.
[0071] Optionally, the first preset frequency band can be set by relevant technical personnel according to actual needs, such as the B1, B3, B34, B39, and / or B41 frequency bands. The first target signal can be a composite signal obtained by carrier aggregation of radio frequency signals in the frequency bands that need to operate simultaneously.
[0072] In some possible embodiments, see Figure 2 The first frequency selection module 103 includes multiple frequency selection channels.
[0073] The input terminals of each frequency selection channel are respectively connected to the corresponding output terminals of the matching selection module 102.
[0074] In this embodiment, each frequency selection channel is used to filter the received first radio frequency signal or the second radio frequency signal to obtain and output the first target signal.
[0075] Optionally, the filtering operation of each frequency selection channel on the received first radio frequency signal or the second radio frequency signal may refer to: filtering the first radio frequency signal or the second radio frequency signal according to the frequency range of the first preset frequency band corresponding to each frequency selection channel, so that the signals in the first radio frequency signal or the second radio frequency signal that do not meet the frequency range of the first preset frequency band are cut off.
[0076] For example, Figure 2 The two upper frequency-selective channels of the three frequency-selective channels shown in the diagram may be frequency-selective channels used to receive the first radio frequency signal. Figure 2The bottommost of the three frequency selection channels shown can be a frequency selection channel for receiving the second radio frequency signal. In one possible embodiment, the topmost of the three frequency selection channels can be a channel for outputting the B34 / B39 frequency band, in which case the first preset frequency band corresponding to this frequency selection channel is the B34 / B39 frequency band; the middle of the three frequency selection channels can be a channel for outputting the B1 / B3 frequency band, in which case the first preset frequency band corresponding to this frequency selection channel is the B1 / B3 frequency band; and the bottommost of the three frequency selection channels can be a channel for outputting the B41 frequency band, in which case the first preset frequency band corresponding to this frequency selection channel is the B41 frequency band.
[0077] In this case, the first target signal can be a synthesized radio frequency signal in the B1+B3 band, a synthesized radio frequency signal in the B1+B41 band, a synthesized radio frequency signal in the B3+B41 band, a synthesized radio frequency signal in the B34+B41 band, and / or a synthesized radio frequency signal in the B39+B41 band. This application does not limit this to any particular signal.
[0078] For example, since the bottom of these three frequency selection channels can be used to output the B41 band, and the frequency range of the B41 band is 2496MHz to 2690MHz, this frequency selection channel will only allow RF signals with frequencies between 2496MHz and 2690MHz to pass through, while RF signals with cutoff frequencies between 2496MHz and 2690MHz will be allowed to pass through.
[0079] It is important to note that, in Figure 2 The schematic diagram of the diversity receiving circuit 100 shown is illustrated using the example of a matching selection module 102 having three frequency selection channels. However, this does not mean that the diversity receiving circuit 100 provided in this application embodiment can only be configured with three frequency selection channels to output the corresponding target signal. This application embodiment does not limit this.
[0080] It is worth noting that, in order to provide a clearer and more detailed introduction to the diversity receiving circuit 100, the working principle of the diversity receiving circuit 100 is briefly explained below:
[0081] After the first selection unit 101 receives the radio frequency signals from the environment, it first distinguishes between signals in frequency bands that do not need to operate simultaneously and signals in frequency bands that do need to operate simultaneously, based on preset rules or user selection. Then, for example, B5... 、 Signals from frequency bands such as B8, B28, and B40 that do not need to operate simultaneously are output from different output terminals, while signals from frequency bands such as B1 are output from different output terminals. 、Radio frequency signals from frequency bands such as B3, B34, B39, and B41 that need to operate simultaneously are output from the same output terminal to the matching selection module 102.
[0082] After the matching selection module 102 receives the radio frequency signal sent by the first selection unit 101, it performs filtering and other processing on the received radio frequency signal to obtain a first radio frequency signal and at least one second radio frequency signal with different frequency bands. Then, the first radio frequency signal and each of the second radio frequency signals are sent to the first frequency selection module 103, and then each frequency selection channel in the first frequency selection module 103 filters the received first radio frequency signal and / or second radio frequency signal to obtain and output a first target signal that meets the first preset frequency band.
[0083] In this way, the purpose of diversity reception of radio frequency signals can be achieved, thereby increasing the communication throughput, and carrier aggregation between multiple different frequency bands can also be achieved.
[0084] In this embodiment, a first selection unit 101, a matching selection module 102, and a first frequency selection module 103 are provided in the diversity receiving circuit 100. Specifically, the first output terminal of the first selection unit 101 is connected to the input terminal of the matching selection module 102, and each output terminal of the matching selection module 102 is correspondingly connected to each input terminal of the first frequency selection module 103. The first selection unit 101 receives a radio frequency (RF) signal and outputs the RF signal to the matching selection module 102. The matching selection module 102 filters the received RF signal to obtain a first RF signal and at least one second RF signal, and sends the first RF signal and each second RF signal to the first frequency selection module 103, wherein the frequency bands of the first RF signal and each second RF signal are different from each other. The first frequency selection module 103 filters the received first RF signal and / or the second RF signal to obtain and output a first target signal that satisfies a first preset frequency band.
[0085] It is understood that the diversity receiving circuit 100 provided in this application embodiment only requires the combination of the first selection unit 101, the matching selection module 102, and the first frequency selection module 103 to achieve the purpose of frequency band carrier aggregation or ENDC for multiple radio frequency signals of different frequency bands. That is, it can achieve the same function as the integrated solutions provided in related technologies (such as LFEM or DIFEM). Moreover, the diversity receiving circuit 100 provided in this application embodiment does not need to be integrated on a single chip, which is less likely to generate stress and is convenient for component design. At the same time, the solution in this application uses fewer components and has the advantage of lower cost.
[0086] In this way, it is possible to improve communication throughput while taking into account the practicality and cost of diversity receiving circuits.
[0087] It should be noted that, in this embodiment, radio frequency signals in multiple frequency bands such as B1, B3, B34, B39, and B41 are used as examples for illustration, but this does not mean that the solution in this application can only perform diversity reception on signals of B1, B3, B34, B39, and B41. In practical applications, radio frequency signals in any other possible frequency bands, such as N41, N77, and N18, can also be processed. This embodiment does not limit this.
[0088] In one possible implementation, Figure 1 and Figure 2 Based on this, continue to see Figure 3 The first selection unit 101 can be a single-pole eight-throw switch, for example... Figure 3 The switch U11501 shown is an example. It has an ANT antenna port, eight output ports (RF1-RF8), three GPIO ports (V1-V3), a VDD power supply port, and a GND ground port. After receiving the RF signal from the antenna, switch U11501 can output RF signals in bands B5, B40, B8, and B28 (which do not need to operate simultaneously) via RF1, RF3, RF5, and RF7, respectively. Conversely, it can output RF signals in bands B1, B3, B34, and B38 (which need to operate simultaneously) to the matching selection module 102 simultaneously via RF4. For detailed connection relationships and circuit structure, please refer to [reference needed]. Figure 3 The embodiments of this application will not be described in detail here.
[0089] In one possible implementation, Figure 1 and Figure 2 Based on this, continue to see Figure 4 The multiple frequency selection channels include one first frequency selection channel and two second frequency selection channels.
[0090] The input terminal of the first frequency selection channel is connected to the first output terminal of the first selection unit 101, and the input terminals of each second frequency selection channel are respectively connected to the output terminal of the matching selection module 102.
[0091] In this embodiment, the first frequency selection channel can be a frequency selection channel for filtering the second radio frequency signal, and each second frequency selection channel can be a frequency selection channel for filtering the first radio frequency signal.
[0092] Optionally, the first frequency-selective channel can be a filter for allowing high-frequency signals to pass through, and each of the second frequency-selective channels can be a filter for allowing low-frequency or intermediate-frequency signals to pass through. Moreover, the signal frequencies allowed to pass through each of the second frequency-selective channels are different.
[0093] For example, if the first radio frequency signal can be a relatively low-frequency intermediate frequency radio frequency signal such as the B1, B3, B34, and / or B39 bands, and the second radio frequency signal can be a relatively high-frequency radio frequency signal such as the B41 band, then the first frequency selection channel can be a channel for selecting radio frequency signals in the B41 band, one of the second radio frequency signals can be a channel for selecting radio frequency signals in the B1 / B3 bands, and the other second radio frequency signal can be a channel for selecting radio frequency signals in the B34 / B39 bands. This application does not limit this specific approach.
[0094] In this case, the first frequency selection channel can be a surface acoustic wave (SAW) filter, the second frequency selection channel for filtering radio frequency signals in the B34 / B39 band can be a bandpass filter, and the second frequency selection channel for filtering radio frequency signals in the B1 / B3 band can be a SAW filter.
[0095] The bandpass filter corresponding to the B34 / B39 frequency band includes at least one filtering channel in at least one frequency range, and is used to select at least one filtering channel in at least one frequency range according to the selection of the combined frequency band, wherein the at least one frequency range includes at least two frequency band ranges.
[0096] The surface acoustic wave filter corresponding to the first frequency selection channel includes at least one filtering channel with a frequency band range, and is used to select the filtering channel of that frequency band according to the combination frequency band selection situation.
[0097] The surface acoustic wave (SAW) filter corresponding to the B1 / B3 frequency band includes at least two frequency band filtering channels and is used to select a frequency range filtering channel from the signals of the three different frequency ranges according to the selection of the combined frequency band. The two frequency bands include a first frequency band and a second frequency band, and the three different frequency ranges include the first frequency band range, the second frequency band range, and the range of the first frequency band and the second frequency band.
[0098] It is worth noting that the specific values of each frequency band and frequency range mentioned above can be set according to actual needs, and this application embodiment does not limit this.
[0099] Furthermore, after the filtered signals are output from the first frequency selection channel and any one of the second frequency selection channels, the signals output from the first frequency selection channel and any one of the second frequency selection channels can be synthesized or fused in any other possible way to obtain the aforementioned first target signal. For example, the fusion of signals from different frequency bands can be achieved using a corresponding frequency synthesizer, modem, or mixer. Moreover, the frequency synthesizer, modem, and / or mixer can be located within circuit 100 or outside of circuit 100. This application embodiment does not limit this.
[0100] It is worth noting that, generally, the two second frequency selection channels among these multiple frequency selection channels are not used simultaneously. That is, in this embodiment, generally only one first frequency selection channel and one second frequency selection channel are used at the same time. Based on the description of the above example, when the second frequency selection channel of the B1 / B3 band is turned on, the second frequency selection channel of the B34 / B39 band will not be turned on. In this case, circuit 100 can realize the frequency band selection of radio frequency signals of the B1+B3 band, the B1+B41 band, the B3+B41 band, the B34+B41 band, and the B39+B41 band, so as to achieve carrier aggregation of radio frequency signals of multiple different frequency bands.
[0101] In one possible implementation, see [link to relevant documentation]. Figure 5 When the first frequency selection module 103 includes at least 3 frequency selection channels, the matching selection module 102 includes: a matching unit 1021 and a second selection unit 1022.
[0102] The input terminal of the matching unit 1021 is connected to the first output terminal of the first selection unit 101, the first output terminal of the matching unit 1021 is connected to the input terminal of the second selection unit 1022, and each second output terminal of the matching unit 1021 and each output terminal of the second selection unit 1022 are respectively connected to the input terminal of each frequency selection channel.
[0103] The matching unit 1021 is used to filter the received radio frequency signal to obtain the first radio frequency signal and each second radio frequency signal, send the first radio frequency signal to the second selection unit 1022, and send each second radio frequency signal to the first frequency selection channel respectively.
[0104] The second selection unit 1022 is used to send the received first radio frequency signal to the second frequency selection channel.
[0105] In this embodiment, the first frequency selection channel is the frequency selection channel connected to the matching unit 1021 among all frequency selection channels. The second frequency selection channel is the frequency selection channel connected to the second selection unit 1022 among all frequency selection channels.
[0106] In this embodiment, the matching unit 1021 may have the ability to split, filter, and select the radio frequency signal sent by the first selection unit 101. For example, the matching unit 1021 may have the ability to split the radio frequency signal into a first radio frequency signal with an intermediate frequency and a second radio frequency signal with a high frequency.
[0107] Optionally, the matching unit 1021 may include a passive matched filter network, which may be a component built from LC circuits. For example, the matching unit 1021 may include an LC high-pass branch and an LC low-pass branch, wherein the LC high-pass branch allows high-frequency signals such as the B41 band to pass through, while attenuating (cutting off) intermediate-frequency signals such as B1 / B3 and B34 / 39; the LC low-pass branch attenuates (cuts off) high-frequency signals such as the B41 band, while allowing intermediate-frequency signals such as B1 / B3 and B34 / 39 to pass through.
[0108] For example, the matching unit 1021 can be a T-type matching network, and correspondingly, the LC high-pass branch and the LC low-pass branch can be a high-pass T-type matching network and a low-pass T-type matching network, respectively. This application does not limit this aspect.
[0109] For example, in Figure 5 Based on this, continue to see Figure 6 , Figure 7 and Figure 8 , Figure 6 This illustrates one possible circuit structure for the matching selection module 102. Figure 7 This illustrates a possible circuit structure for the low-pass matching network corresponding to the B1+B3 frequency band. Figure 8 This diagram illustrates a possible circuit structure for a low-pass matching network corresponding to the B34+B39 frequency bands. Matching unit 1021, i.e., the T-type matching network, can contain four devices.
[0110] For example, a Qualcomm T-type matching network could be composed of "2.4nH in series, 2.2nH+OR in parallel, and 5.6pH in series," corresponding to... Figure 6 The inductors shown are L11558, L11533, L1557, and C11513.
[0111] For example, the low-pass matching network corresponding to the B1+B3 frequency band can be composed of "0.6nH in series, 1.2pH+0R in parallel, and 3.3nH in series". Figure 7 The inductors shown are L11559, L11560, C11514, and L11553.
[0112] For example, the low-pass matching network corresponding to B34+B39 can be composed of "1.5nH in series, 0.5pH+OR in parallel, and 2.2nH in series". Figure 8 The inductors shown are L11547, L11548, C11515, and L11556.
[0113] For specific connection relationships and circuit structure, please refer to [link / reference]. Figure 6 , Figure 7 and Figure 8 The embodiments of this application will not be described in detail here.
[0114] It is understood that the purpose of setting up the matching unit 1021 is to allow intermediate frequency B1 / B3 / B34 / B39 to pass through through the low-pass matching network and allow B41 to pass through through the high-pass matching network. The matching unit 1021 is not limited to the circuit shown in the figure above, and this application embodiment does not limit it.
[0115] Optionally, the second selection unit 102 can also be a single-pole multi-throw switch, which can select according to the multiple frequency selection channels. In addition, the second selection unit 102 can also be triggered by relevant technicians to control the second selection unit 102 to select the desired radio frequency channel or send the corresponding radio frequency signal. This application embodiment does not limit this.
[0116] For example, if two second frequency selection channels are provided among the multiple frequency selection channels, then the second selection unit 102 can be a single-pole double-throw switch; if N second frequency selection channels are provided among the multiple frequency selection channels, then the second selection unit 102 can be a single-pole N-throw switch.
[0117] For example, if the two second frequency selection channels are the second frequency selection channels for the B1 / B3 band and the B34 / B39 band respectively, then since the B1 / B3 band and the B34 / B39 band will not be used simultaneously, they can be selected by the second selection unit 102 and then combined with the RF signal of the first frequency selection channel. When the B3+B41 band and the B1+B41 band are needed, the second selection unit 102 is connected to the second frequency selection channel of the B1 / B3 band; when the B39+B41 band and the B34+B41 band are needed, the second selection unit 102 is connected to the second frequency selection channel of the B34 / B39 band. This application does not limit this specific implementation.
[0118] In this way, the radio frequency signal received by the matching selection module 102 can be split into the first radio frequency signal and the second radio frequency signal mentioned above, so as to perform carrier fusion on signals of different frequency bands in the future.
[0119] In one possible implementation, the circuit also includes multiple low-pass filter networks.
[0120] The input terminals of each low-pass filter network are connected to the second selection unit 1022, and the output terminals of each low-pass filter network are connected to each corresponding second frequency selection channel.
[0121] Optionally, each low-pass filter network can be a T-type low-pass filter network or any other type of low-pass filter network; this application embodiment does not limit this.
[0122] It is worth noting that each low-pass filter network allows relatively low-frequency radio frequency signals to pass through while cutting off higher-frequency radio frequency signals. Furthermore, each low-pass filter network is connected between the second selection unit 1022 and each second frequency selection channel. This means that each low-pass filter network and its corresponding second frequency selection channel can form a two-stage cascaded filter structure, which can significantly reduce residual high-frequency noise after single-stage filtering, allow low-frequency signals to pass through while suppressing high-frequency interference, thereby achieving the effect of filtering out-of-band noise and ensuring the signal quality of the target frequency band.
[0123] In one possible implementation, the matching unit 1021 further includes a high-pass filter and a low-pass filter.
[0124] The input terminals of the high-pass filter and the low-pass filter are respectively connected to the first output terminal of the first selection unit 101, the output terminal of the low-pass filter is connected to the input terminal of the second selection switch, and the output terminal of the high-pass filter is connected to the input terminal of the first frequency selection channel.
[0125] The high-pass filter is used to filter the received radio frequency signal to obtain the first radio frequency signal. It can be seen that this high-pass filter is the high-pass T-type matching network mentioned in the above embodiments.
[0126] The low-pass filter is used to filter the received radio frequency signal to obtain the second radio frequency signal. It can be seen that this low-pass filter is the low-pass T-type matching network mentioned in the above embodiments.
[0127] Optionally, the frequency band of the first radio frequency signal is greater than the frequency band of the second radio frequency signal.
[0128] Wherein, the frequency band of the first radio frequency signal being greater than the frequency band of the second radio frequency signal can mean that the minimum value of the frequency range of the first radio frequency signal is greater than the maximum value of the frequency range of the second radio frequency signal.
[0129] In this way, the radio frequency signal received by the matching selection module 102 can be split into the first radio frequency signal and the second radio frequency signal mentioned above, so as to perform carrier fusion on signals of different frequency bands in the future.
[0130] In one possible implementation, see [link to previous section] Figure 5 The circuit also includes a second frequency selection module 104.
[0131] The input terminal of the second frequency selection module 104 is connected to the second output terminal of the first selection switch.
[0132] The second frequency selection module 104 is used to filter the received radio frequency signal to obtain a second target signal that meets the second preset frequency band.
[0133] Optionally, the second frequency selection module 104 can be configured for radio frequency signals in frequency bands that do not require carrier aggregation. That is, the second preset frequency band can refer to the aforementioned frequency bands that do not need to operate simultaneously, such as B5. 、 Frequency bands such as B8, B28, and B40.
[0134] Optionally, the second frequency selection module 104 may also include at least one frequency selection channel. The frequency bands of each frequency selection channel in the second frequency selection module 104 are different from those of each frequency selection channel in the first frequency selection module 103.
[0135] Optionally, the second target signal may include a radio frequency signal in a frequency band that does not currently need to operate simultaneously.
[0136] In this way, only one channel can be selected for processing for frequency bands that do not need to operate simultaneously, without having to consider the compatibility rules of multi-carrier combinations. That is, each frequency selection channel in the second frequency selection module 104 can be implemented based on a single-channel architecture, reducing the cost of the power amplifier and the complexity of baseband processing. Moreover, it can increase the number of frequency bands that the circuit 100 can be compatible with, further improving the practicality of the circuit 100.
[0137] In one possible implementation, see [link to previous section] Figure 5 The circuit also includes a signal amplification module 105.
[0138] Each input terminal of the signal amplification module 105 is connected to each output terminal of the first frequency selection module 103 and / or the output terminal of the second frequency selection module 104, respectively.
[0139] The signal amplification module 105 is used to amplify the first target signal and / or the second target signal.
[0140] Optionally, the signal amplification module 105 can amplify the received weak signal while minimizing the introduction of additional noise. The signal amplification module 105 can be a network low-noise amplifier (LNA), or it can be a special type of LNA design, namely, an LNA bank. This involves integrating multiple LNAs into a single module, with each LNA responsible for amplifying signals in a specific frequency band. This LNA bank design is typically used to support signal reception across multiple frequency bands, ensuring that the device can process signals from different frequency bands simultaneously without interference. For example, in electronic devices, an LNA bank can integrate multiple LNAs, each corresponding to a specific frequency band, thereby ensuring signal reception quality.
[0141] It is worth noting that by including a signal amplification module 105 in circuit 100, the signal strength and anti-interference capability of the first target signal and / or the second target signal can be improved, and the noise of the first target signal and / or the second target signal can be reduced. In this way, the possibility that the first target signal and / or the second target signal output by circuit 100 cannot be correctly identified and processed by subsequent components can be avoided as much as possible, thereby improving the practicality of circuit 100.
[0142] In one possible implementation, if it is necessary to achieve the combination of LB (low frequency) and MHB (medium frequency), then the matching selection module 102 can also be equipped with a matching combination form for LB (low frequency) and MB (medium frequency), see [link to relevant documentation]. Figure 9 As can be seen, the matching selection module 102 may further include a secondary matching unit 1023, and the first frequency selection module 130 may further include a third frequency selection channel. The structures of the secondary matching unit 1023 and the matching unit 1021 may be the same or different; this embodiment does not limit this.
[0143] After the matching unit 1021 filters the radio frequency signal and splits it into the first radio frequency signal and the second radio frequency signal, the secondary matching unit 1023 can further filter the first radio frequency signal and split it into the third radio frequency signal and the fourth radio frequency signal. In this way, the radio frequency signal can be split into LB (low frequency), MB (intermediate frequency), and HB (high frequency) signals, and then the carrier fusion of LB (low frequency), MB (intermediate frequency), and HB (high frequency) can be realized, further improving the practicality of the circuit 100.
[0144] Based on the foregoing embodiments, this application provides an electronic device. Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. See also... Figure 10 The electronic device X may include at least the diversity receiving circuit 100 provided in any of the above embodiments.
[0145] Optionally, the electronic device X may also include any possible device such as the frequency synthesizer, modem, mixer, antenna, display screen, processor, and storage medium, and the embodiments of this application do not limit this.
[0146] Optionally, the electronic device X can be any possible device such as a mobile phone, computer, tablet, or server.
[0147] The description of the above embodiments of electronic device X is similar to the description of the above embodiments of diversity receiving circuit 100. That is, the electronic device X and diversity receiving circuit 100 provided in this application belong to the same design concept and have similar beneficial effects as the above embodiments of diversity receiving circuit 100. For technical details not disclosed in the device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.
[0148] Those skilled in the art will understand that Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.
[0149] It should be understood that the phrases "one embodiment," "an embodiment," or "some embodiments" mentioned throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment," "in one embodiment," or "in some embodiments" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above-described embodiments are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments. The descriptions of the various embodiments above tend to emphasize the differences between the various embodiments; their similarities or commonalities can be referred to mutually, and for the sake of brevity, they will not be repeated here.
[0150] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three kinds of relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist simultaneously, and object B exists alone.
[0151] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0152] The circuits disclosed in the embodiments of the several circuits provided in this application can be arbitrarily combined without conflict to obtain new circuit embodiments.
[0153] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0154] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A diversity receiving circuit, characterized in that, The circuit includes: a first selection unit, a matching selection module, and a first frequency selection module; The first output terminal of the first selection unit is connected to the input terminal of the matching selection module, and each output terminal of the matching selection module is connected to each input terminal of the first frequency selection module respectively. The first selection unit is used to receive radio frequency signals and output the radio frequency signals to the matching selection module. The matching selection module is used to filter the received radio frequency signal to obtain a first radio frequency signal and at least one second radio frequency signal, and to send the first radio frequency signal and each of the second radio frequency signals to the first frequency selection module respectively, wherein the frequency bands of the first radio frequency signal and each of the second radio frequency signals are different from each other; The first frequency selection module is used to filter the received first radio frequency signal and / or the second radio frequency signal to obtain and output a first target signal that satisfies the first preset frequency band.
2. The diversity receiving circuit as described in claim 1, characterized in that, The first frequency selection module includes multiple frequency selection channels; The input terminal of each frequency selection channel is connected to the corresponding output terminal of the matching selection module. Each of the frequency selection channels is used to filter the received first radio frequency signal or the second radio frequency signal to obtain and output the first target signal.
3. The diversity receiving circuit as described in claim 2, characterized in that, The plurality of frequency selection channels includes one first frequency selection channel and two second frequency selection channels; The input terminal of the first frequency selection channel is connected to the first output terminal of the first selection unit, and the input terminals of each of the second frequency selection channels are respectively connected to the output terminal of the matching selection module.
4. The diversity receiving circuit as described in claim 2, characterized in that, When the first frequency selection module includes at least three frequency selection channels, the matching selection module includes: a matching unit and a second selection unit; The input terminal of the matching unit is connected to the first output terminal of the first selection unit, the first output terminal of the matching unit is connected to the input terminal of the second selection unit, and each second output terminal of the matching unit and each output terminal of the second selection unit are respectively connected to the input terminal of each frequency selection channel. The matching unit is used to filter the received radio frequency signal to obtain the first radio frequency signal and each of the second radio frequency signals, send the first radio frequency signal to the second selection unit, and send each of the second radio frequency signals to the first frequency selection channel, wherein the first frequency selection channel is the frequency selection channel connected to the matching unit among the frequency selection channels. The second selection unit is used to send the received first radio frequency signal to a second frequency selection channel, which is the frequency selection channel connected to the second selection unit among the frequency selection channels.
5. The diversity receiving circuit as described in claim 4, characterized in that, The circuit also includes: multiple low-pass filter networks; The input terminals of each low-pass filter network are connected to the second selection unit, and the output terminals of each low-pass filter network are connected to each of the second frequency selection channels.
6. The diversity receiving circuit as described in claim 4, characterized in that, The matching unit further includes: a high-pass filter and a low-pass filter; The input terminal of the high-pass filter and the input terminal of the low-pass filter are respectively connected to the first output terminal of the first selection unit, the output terminal of the low-pass filter is connected to the input terminal of the second selection unit, and the output terminal of the high-pass filter is connected to the input terminal of the first frequency selection channel. The high-pass filter is used to filter the received radio frequency signal to obtain the first radio frequency signal; The low-pass filter is used to filter the received radio frequency signal to obtain the second radio frequency signal, wherein the frequency band of the first radio frequency signal is greater than the frequency band of the second radio frequency signal.
7. The diversity receiving circuit as described in claim 4, characterized in that, The first selection unit and the second selection unit are both single-pole multi-throw switches.
8. The diversity receiving circuit as described in claim 1, characterized in that, The circuit further includes: a second frequency selection module; The input terminal of the second frequency selection module is connected to the second output terminal of the first selection unit; The second frequency selection module is used to filter the received radio frequency signal to obtain a second target signal that meets the second preset frequency band.
9. The diversity receiving circuit as described in claim 1 or 8, characterized in that, The circuit also includes: a signal amplification module; Each input terminal of the signal amplification module is connected to each output terminal of the first frequency selection module and / or the output terminal of the second frequency selection module, respectively. The signal amplification module is used to amplify the first target signal and / or the second target signal.
10. An electronic device, characterized in that, The electronic device includes at least the diversity receiving circuit according to any one of claims 1 to 9.