CN220087287U - Signal processing device and terminal equipment - Google Patents
Signal processing device and terminal equipment Download PDFInfo
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- CN220087287U CN220087287U CN202321165151.3U CN202321165151U CN220087287U CN 220087287 U CN220087287 U CN 220087287U CN 202321165151 U CN202321165151 U CN 202321165151U CN 220087287 U CN220087287 U CN 220087287U
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Abstract
The embodiment of the utility model provides a signal processing device and terminal equipment, wherein the signal processing device comprises: the control module is respectively in communication connection with the first power amplifier and the second power amplifier, the first power amplifier is in communication connection with the first antenna, the second power amplifier is in communication connection with the second antenna, the distance between the first power amplifier and the first antenna is smaller than a first threshold value, and the distance between the second power amplifier and the second antenna is smaller than the first threshold value; and under the condition that the signal quality difference between the received signal quality of the second antenna and the received signal quality of the first antenna is larger than a second threshold value, amplifying the transmitted signal through a second power amplifier, and transmitting the amplified transmitted signal through the second antenna. By adopting the utility model, the system power consumption can be saved.
Description
Technical Field
The present utility model relates to the field of signal processing technologies, and in particular, to a signal processing apparatus and a terminal device.
Background
The existing communication products basically have the function of switching the transmitting antenna. In the design of the product, the antennas 1 and 2 are typically distributed in different areas, such as the head and the bottom of the product, respectively. The system may evaluate the communication quality of the different antennas by comparing the received signal quality on the different antennas. For example, in the default state, the antenna 1 is used to transmit a signal, and when the difference between the received signal quality of the antenna 2 and the received signal quality of the antenna 1 is greater than Xdb, the system is switched from the default state to the switching state, and in the switching state, the antenna 2 is used to transmit a signal. In the prior art, whether the antenna 1 is adopted to transmit signals or the antenna 2 is adopted to transmit signals, a power amplifier PA1 arranged for the antenna 1 is used for amplifying signals before transmission, and switching is mainly completed through a switcher. In order to improve performance and reduce power consumption, the path loss from PA1 to antenna 1 is as small as possible during product design, and because antenna 1 and antenna 2 are distributed in different areas, the path loss from PA1 to antenna 2 is necessarily larger than the path loss from PA1 to antenna 1, so that the power amplifier PA1 is required to have larger amplification factor during switching state, and the system power consumption is increased.
Disclosure of Invention
The embodiment of the utility model discloses a signal processing device and terminal equipment, wherein a power amplifier is arranged close to a first antenna and a second antenna respectively, so that the path loss from the power amplifier to the antennas can be reduced, and the system power consumption can be saved.
In a first aspect, the present utility model provides a signal processing apparatus, the apparatus comprising: the control module is respectively in communication connection with the first power amplifier and the second power amplifier, the first power amplifier is in communication connection with the first antenna, the second power amplifier is in communication connection with the second antenna, the distance between the first power amplifier and the first antenna is smaller than a first threshold value, and the distance between the second power amplifier and the second antenna is smaller than the first threshold value;
when the signal quality difference between the received signal quality of the second antenna and the received signal quality of the first antenna is larger than a second threshold value, the control module is used for controlling the transmitting signal to be amplified through the second power amplifier and transmitting the amplified transmitting signal through the second antenna;
and the control module is used for controlling the transmitting signal to be amplified through the first power amplifier and transmitting the amplified transmitting signal through the first antenna under the condition that the signal quality difference between the receiving signal quality of the second antenna and the receiving signal quality of the first antenna is smaller than or equal to the second threshold value.
With reference to the first aspect, in one possible implementation manner, the first antenna is a main antenna, and the second antenna is a diversity antenna.
With reference to the first aspect, in a possible implementation manner, the apparatus further includes a first filter; the first power amplifier is in communication with the first antenna through the first filter;
the first filter is used for performing first filtering processing on the transmission signal amplified by the first power amplifier and transmitting the transmission signal subjected to the first filtering processing through the first antenna.
With reference to the first aspect, in one possible implementation manner, the first filter is a first duplex filter;
a first public port of the first duplex filter is connected with the first antenna, a first transmitting radio frequency signal input port of the first duplex filter is connected with the first power amplifier, and a first receiving radio frequency signal output port of the first duplex filter is connected with the control module;
the first duplex filter is configured to receive the transmission signal amplified by the first power amplifier through the first transmission radio frequency signal input port, perform a first filtering process on the transmission signal amplified by the first power amplifier, and send the transmission signal after the first filtering process to the first antenna through the first common port;
the first duplex filter is further configured to receive a first received signal of the first antenna through the first common port, perform a second filtering process on the first received signal, and send the first received signal after the second filtering process to the control module through the first received radio frequency signal output port.
With reference to the first aspect, in a possible implementation manner, the apparatus further includes a second filter, and the second power amplifier is communicatively connected to the second antenna through the second filter;
the second filter is used for performing second filtering processing on the transmission signal amplified by the second power amplifier and transmitting the transmission signal subjected to the second filtering processing through the second antenna.
With reference to the first aspect, in a possible implementation manner, the second filter is a second duplex filter;
a second public port of the second duplex filter is connected with the second antenna, a second transmitting radio frequency signal input port of the second duplex filter is connected with the second power amplifier, and a second receiving radio frequency signal output port of the second duplex filter is connected with the control module;
the second duplex filter is configured to receive the transmission signal amplified by the second power amplifier through the second transmission radio frequency signal input port, perform a second filtering process on the transmission signal amplified by the second power amplifier, and send the transmission signal after the second filtering process to the second antenna through the second common port;
the second duplex filter is further configured to receive a second received signal of the second antenna through the second common port, perform a second filtering process on the second received signal, and send the second received signal after the second filtering process to the control module through the second received radio frequency signal output port.
With reference to the first aspect, in one possible implementation manner, a distance between the first antenna and the second antenna is greater than a third threshold.
With reference to the first aspect, in one possible implementation manner, a difference between a magnification of the transmission signal by the first power amplifier and a magnification of the transmission signal by the second power amplifier is less than or equal to a fourth threshold.
With reference to the first aspect, in one possible implementation manner, the control module is a radio frequency chip.
In a second aspect, the present utility model provides a terminal device, comprising a signal processing apparatus as in the first aspect and any possible implementation manner of the first aspect.
In the embodiment of the utility model, the first power amplifier is arranged close to the first antenna, the second power amplifier is arranged close to the second antenna, the control module is respectively connected with the first power amplifier and the second power amplifier in a communication way, the first power amplifier is connected with the first antenna in a communication way, and the second power amplifier is connected with the second antenna in a communication way. When the received signal quality of the second antenna is better than that of the first antenna, and the signal quality difference between the received signal quality of the second antenna and that of the first antenna is greater than a second threshold, the transmitted signal is amplified by the second power amplifier and transmitted by the second antenna, and the path loss between the second power amplifier and the second antenna can be reduced because the second power amplifier is close to the second antenna. If the difference between the received signal quality of the second antenna and the received signal quality of the first antenna is less than or equal to a second threshold, the transmitted signal is amplified by the first power amplifier and transmitted through the first antenna, and the path loss between the first power amplifier and the first antenna is reduced because the first power amplifier is close to the first antenna. The utility model not only can ensure lower path loss between the first power amplifier and the first antenna, but also can further reduce the path loss between the second power amplifier and the second antenna, thereby saving the power consumption of the system.
Drawings
In order to more clearly describe the embodiments of the present utility model or the technical solutions in the background art, the following will briefly describe the drawings that are required to be used in the embodiments of the present utility model or the background art.
Fig. 1 is a block diagram of a signal processing apparatus according to an embodiment of the present utility model;
fig. 2 is a block diagram of a signal processing apparatus according to an embodiment of the present utility model;
fig. 3a is a block diagram of a signal processing apparatus according to an embodiment of the present utility model;
fig. 3b is a block diagram of a signal processing apparatus according to an embodiment of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described with reference to the accompanying drawings.
The terms first and second and the like in the description, the claims and the drawings of the present utility model are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. Such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the list of steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.
In the present utility model, "at least one (item)" means one or more, "a plurality" means two or more, "at least two (items)" means two or three and more, "and/or" for describing an association relationship of an association object, and three kinds of relationships may exist, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of (a) or a similar expression thereof means any combination of these items. For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".
Fig. 1 is a block diagram of a signal processing apparatus 10 according to an embodiment of the present utility model. As shown in fig. 1, the signal processing apparatus 10 may include a control module 101, a first power amplifier 102, a second power amplifier 103, a first antenna 104, and a second antenna 105.
As shown in fig. 1, the control module 101 is communicatively connected to a first power amplifier 102 and a second power amplifier 103, respectively, the first power amplifier 102 is communicatively connected to a first antenna 104, the second power amplifier 103 is communicatively connected to a second antenna 105, the first power amplifier 102 is less than a first threshold distance from the first antenna 104, and the second power amplifier 103 is less than a first threshold distance from the second antenna 105. It is to be understood that the communication connection may be a direct connection or an indirect connection, where a direct connection may be understood as a direct connection between two devices, and an indirect connection may be understood as a connection between two devices through other devices, which is not limited to the present utility model.
Illustratively, the distance between the first power amplifier 102 and the first antenna 104 is smaller than the first threshold, which ensures that the path loss of the transmission signal amplified by the first power amplifier 102 during the transmission to the first antenna 104 is lower. Illustratively, the distance between the second power amplifier 103 and the second antenna 105 is smaller than the first threshold, so that the path loss of the transmission signal amplified by the second power amplifier 103 during the process of sending the transmission signal to the second antenna 105 is ensured to be lower. In one possible implementation, the distance from the power amplifier to the corresponding antenna may be understood as the distance that the amplified transmission signal output by the power amplifier passes in reaching the corresponding antenna. In another possible implementation, the distance of the power amplifier to the corresponding antenna may be understood as a linear distance of the power amplifier to the corresponding antenna.
In a case where a signal quality difference between the received signal quality of the second antenna 105 and the received signal quality of the first antenna 104 is greater than a second threshold, the control module 101 is configured to control the transmit signal to be amplified by the second power amplifier 103, and transmit the amplified transmit signal through the second antenna 105. The received signal quality may be a reference signal received power (Reference Signal Receiving Power, RSRP) of the corresponding antenna. In other words, when the RSRP of the second antenna 105 is greater than the RSRP of the first antenna 104 and the signal quality difference is greater than the second threshold, the control module 101 is configured to control the transmit signal to be amplified by the second power amplifier 103, and transmit the amplified transmit signal through the second antenna 105.
In a case where a signal quality difference between the received signal quality of the second antenna 105 and the received signal quality of the first antenna 104 is less than or equal to a second threshold, the control module 101 is configured to control the transmit signal to be amplified by the first power amplifier 102, and transmit the amplified transmit signal through the first antenna 104. In other words, in a case where the signal quality difference between the RSRP of the second antenna 105 and the RSRP of the first antenna 104 is less than or equal to the second threshold, the control module 101 is configured to control the transmit signal to be amplified by the first power amplifier 102, and transmit the amplified transmit signal through the first antenna 104. It can be appreciated that if the RSRP of the first antenna 104 is greater than the RSRP of the second antenna 105, then the signal quality difference between the RSRP of the second antenna 105 and the RSRP of the first antenna 104 is negative. The second threshold value can be flexibly set according to requirements. In some embodiments, the second threshold may be a value greater than or equal to 0.
Alternatively, the distance between the first antenna 104 and the second antenna 105 may be greater than a third threshold, e.g., the first antenna 104 and the second antenna 105 are disposed at the top and bottom of the terminal device, respectively. Since the distance between the first antenna 104 and the second antenna 105 is relatively far, if only the power amplifier close to the first antenna 104 is provided for the first antenna 104, when switching to the second antenna 105 to transmit signals, relatively large path loss is likely to be caused due to the fact that the second antenna 105 is relatively far from the power amplifier, and the system power consumption is increased. By adopting the technical scheme of the utility model, the first power amplifier is arranged close to the first antenna 104 for the first antenna 104, the second power amplifier is arranged close to the second antenna 105 for the second antenna 105, no matter which antenna is used for transmitting signals, the path loss is lower, and the system power consumption can be reduced.
Optionally, the difference between the amplification of the transmission signal by the first power amplifier and the amplification of the transmission signal by the second power amplifier is less than or equal to the fourth threshold. In other words, no matter which path is adopted for transmitting the signal, the system power consumption can be ensured to be lower.
In some embodiments, the first antenna 104 may be a primary antenna and the second antenna 105 may be a diversity antenna. Compared with the prior art, the power amplifier is only arranged for the main antenna, and the power amplifier is respectively arranged for the main antenna and the diversity antenna, so that the path loss can be reduced and the system power consumption can be reduced when the antenna is switched.
With continued reference to fig. 1, the signal processing apparatus in an embodiment of the present utility model may further include a first filter 106; the first power amplifier 102 is communicatively coupled to the first antenna 104 via the first filter 106.
The first filter 106 is configured to perform a first filtering process on the transmission signal amplified by the first power amplifier 102, and transmit the transmission signal after the first filtering process through the first antenna 104.
In some embodiments, the signal processing apparatus further comprises a second filter 107, the second power amplifier 103 being communicatively coupled to the second antenna 105 via the second filter 107.
The second filter 107 is configured to perform a second filtering process on the transmission signal amplified by the second power amplifier 103, and transmit the transmission signal after the second filtering process through the second antenna 105.
In the embodiment of the present utility model, when the difference between the received signal quality of the second antenna 105 and the received signal quality of the first antenna 104 is greater than the second threshold, the control module 101 is configured to control the transmit signal to perform amplification processing through the second power amplifier 103, send the amplified transmit signal to the first filter 106 to perform first filtering processing, and finally transmit the transmit signal after the first filtering processing through the second antenna 105.
In a case that a signal quality difference between the received signal quality of the second antenna 105 and the received signal quality of the first antenna 104 is less than or equal to a second threshold, the control module 101 is configured to control the transmit signal to be amplified by the first power amplifier 102, send the amplified transmit signal to the second filter 107 to perform a second filtering process, and finally transmit the transmit signal after the second filtering process through the first antenna 104.
The control module shown in fig. 1 may be a radio frequency chip, the first filter may be a first duplex filter, and the second filter may be a second duplex filter, and in the following, with reference to fig. 2, the signal processing apparatus 20 in the embodiment of the present utility model is described by taking the control module as a radio frequency chip, the first filter as a first duplex filter, and the second filter as a second duplex filter as an example. As shown in fig. 2, the signal processing device 20 includes: a radio frequency chip 201, a first power amplifier 202, a second power amplifier 203, a first antenna 204, a second antenna 205, a first duplex filter 206, a second duplex filter 207. The first duplex filter 206 may include a first common port 208, a first receive rf signal output port 209, and a first transmit rf signal input port 210. The second duplex filter may include a second common port 211, a second transmit radio frequency signal input port 212, and a second receive radio frequency signal output port 213.
As shown in fig. 2, the radio frequency chip 201 is communicatively connected to the first power amplifier 202 and the second power amplifier 203, the first power amplifier 202 is communicatively connected to the first transmit radio frequency signal input port 210 of the first duplex filter 206, the first common port 208 of the first duplex filter 206 is connected to the first antenna 204, and the first receive radio frequency signal output port 209 of the first duplex filter 206 is connected to the radio frequency chip 201.
The first duplex filter 206 is configured to receive the transmission signal amplified by the first power amplifier 202 through the first transmission rf signal input port 210, perform a first filtering process on the transmission signal amplified by the first power amplifier 202, and send the transmission signal after the first filtering process to the first antenna 204 through the first common port 208 of the first duplex filter 206.
The first duplex filter is further configured to receive a first received signal of the first antenna 204 through the first common port 208, perform a second filtering process on the first received signal, and send the first received signal after the second filtering process to the radio frequency chip 201 through the first received radio frequency signal output port 209.
As shown in fig. 2, the second power amplifier 203 is communicatively coupled to a second transmit rf signal input port 212 of the second duplex filter 207, a second common port 211 of the second duplex filter 207 is coupled to the second antenna 205, and a second receive rf signal output port 213 of the second duplex filter 207 is coupled to the rf chip 201.
The second common port 211 of the second duplex filter 207 is connected to the second antenna 205, the second transmit rf signal input port 212 of the second duplex filter 207 is connected to the second power amplifier 203, and the second receive rf signal output port 213 of the second duplex filter 207 is connected to the rf chip 201.
The second duplex filter 207 is configured to receive the transmission signal amplified by the second power amplifier 203 through the second transmission rf signal input port 212, perform a second filtering process on the transmission signal amplified by the second power amplifier 203, and send the transmission signal after the second filtering process to the second antenna 205 through the second common port 211.
The second duplex filter 207 is further configured to receive a second received signal of the second antenna 205 through the second common port 211, perform a second filtering process on the second received signal, and send the second filtered second received signal to the rf chip 201 through the second received rf signal output port 213.
The working principle of the signal processing device 20 shown in fig. 2 is described below in connection with fig. 3a and 3 b.
As shown in fig. 3a, in a case where a difference between a received signal quality of the second antenna 205 and a received signal quality of the first antenna 204 is greater than a second threshold, for example, the received signal quality of the second antenna 205 is better than the received signal quality of the first antenna 204, and a difference between the received signal quality of the second antenna 205 and the received signal quality of the first antenna 204 is greater than the second threshold, the radio frequency chip 201 is configured to control the first power amplifier 202 to silence, i.e., to silence a portion of the dashed box in fig. 3a, for example, the first power amplifier 202 does not operate, i.e., does not perform signal transmission through the first antenna 204, and to control the transmission signal to perform amplification processing through the second power amplifier 203, and to input the amplified transmission signal to the second duplex filter 207 through the second transmission radio frequency signal input port 212 for performing the first filtering processing, and the second duplex filter 207 sends the transmission signal after the filtering processing to the second antenna 205 through the second common port 211 for transmission. Illustratively, the second antenna 205 may further receive signals, and send the received signals to the second duplex filter 207 through the second common port 211 for performing a second filtering process, and the second duplex filter 207 sends the filtered received signals to the rf chip 201 through the second rf signal output port 213. In this scenario, the first antenna 204 may receive a signal, and send the received signal to the first duplex filter 206 through the first common port 208 for performing the second filtering process, where the first duplex filter 206 sends the filtered received signal to the rf chip 201 through the first received rf signal output port 209.
As shown in fig. 3b, in a case where a difference between the received signal quality of the second antenna 205 and the received signal quality of the first antenna 204 is less than or equal to a second threshold, for example, a difference between the received signal quality of the second antenna 205 and the received signal quality of the first antenna 204 is less than or equal to a second threshold, the radio frequency chip 201 is configured to control the second power amplifier 202 to silence, i.e., to silence a portion of a dashed box in fig. 3b, (for example, the second power amplifier 203 does not operate, i.e., does not perform signal transmission through the first antenna 205), and to control the transmit signal to perform amplification through the first power amplifier 202, and to input the amplified transmit signal to the first duplex filter 206 through the first transmit radio frequency signal input port 210, and the first duplex filter 206 sends the transmit signal after the filtering to the first antenna 204 through the first common port 208 to perform transmission. Illustratively, the first antenna 204 may further receive signals, and send the received signals to the first duplex filter 206 through the first common port 208 for filtering, and the first duplex filter 206 sends the filtered received signals to the rf chip 201 through the first rf signal output port 209. In this scenario, the second antenna 205 may receive a signal and send the received signal to the second duplex filter 207 through the second common port 211 for filtering, and the second duplex filter 207 sends the filtered received signal to the rf chip 201 through the second received rf signal output port 213.
The embodiment of the utility model also provides a terminal device which comprises any signal processing device in the previous description.
The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present utility model, the present disclosure should not be construed as limiting the present utility model in summary.
Claims (10)
1. A signal processing apparatus, comprising: the control module is respectively in communication connection with the first power amplifier and the second power amplifier, the first power amplifier is in communication connection with the first antenna, the second power amplifier is in communication connection with the second antenna, the distance between the first power amplifier and the first antenna is smaller than a first threshold value, and the distance between the second power amplifier and the second antenna is smaller than the first threshold value;
when the signal quality difference between the received signal quality of the second antenna and the received signal quality of the first antenna is larger than a second threshold value, the control module is used for controlling the transmitting signal to be amplified through the second power amplifier and transmitting the amplified transmitting signal through the second antenna;
and the control module is used for controlling the transmitting signal to be amplified through the first power amplifier and transmitting the amplified transmitting signal through the first antenna under the condition that the signal quality difference between the receiving signal quality of the second antenna and the receiving signal quality of the first antenna is smaller than or equal to the second threshold value.
2. The apparatus of claim 1, wherein the first antenna is a primary antenna and the second antenna is a diversity antenna.
3. The apparatus of claim 2, wherein the apparatus further comprises a first filter; the first power amplifier is in communication with the first antenna through the first filter;
the first filter is used for performing first filtering processing on the transmission signal amplified by the first power amplifier and transmitting the transmission signal subjected to the first filtering processing through the first antenna.
4. The apparatus of claim 3, wherein the first filter is a first duplex filter;
a first public port of the first duplex filter is connected with the first antenna, a first transmitting radio frequency signal input port of the first duplex filter is connected with the first power amplifier, and a first receiving radio frequency signal output port of the first duplex filter is connected with the control module;
the first duplex filter is configured to receive the transmission signal amplified by the first power amplifier through the first transmission radio frequency signal input port, perform a first filtering process on the transmission signal amplified by the first power amplifier, and send the transmission signal after the first filtering process to the first antenna through the first common port;
the first duplex filter is further configured to receive a first received signal of the first antenna through the first common port, perform a second filtering process on the first received signal, and send the first received signal after the second filtering process to the control module through the first received radio frequency signal output port.
5. The apparatus of claim 3 or 4, further comprising a second filter through which the second power amplifier is communicatively coupled to the second antenna;
the second filter is used for performing second filtering processing on the transmission signal amplified by the second power amplifier and transmitting the transmission signal subjected to the second filtering processing through the second antenna.
6. The apparatus of claim 5, wherein the second filter is a second duplex filter;
a second public port of the second duplex filter is connected with the second antenna, a second transmitting radio frequency signal input port of the second duplex filter is connected with the second power amplifier, and a second receiving radio frequency signal output port of the second duplex filter is connected with the control module;
the second duplex filter is configured to receive the transmission signal amplified by the second power amplifier through the second transmission radio frequency signal input port, perform a second filtering process on the transmission signal amplified by the second power amplifier, and send the transmission signal after the second filtering process to the second antenna through the second common port;
the second duplex filter is further configured to receive a second received signal of the second antenna through the second common port, perform a second filtering process on the second received signal, and send the second received signal after the second filtering process to the control module through the second received radio frequency signal output port.
7. The apparatus of any of claims 1-6, wherein a distance between the first antenna and the second antenna is greater than a third threshold.
8. The apparatus of claim 7, wherein a difference between a magnification of the transmit signal by the first power amplifier and a magnification of the transmit signal by the second power amplifier is less than or equal to a fourth threshold.
9. The apparatus of any of claims 1-6, wherein the control module is a radio frequency chip.
10. A terminal device comprising a signal processing apparatus as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321165151.3U CN220087287U (en) | 2023-05-15 | 2023-05-15 | Signal processing device and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321165151.3U CN220087287U (en) | 2023-05-15 | 2023-05-15 | Signal processing device and terminal equipment |
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| CN220087287U true CN220087287U (en) | 2023-11-24 |
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| CN202321165151.3U Active CN220087287U (en) | 2023-05-15 | 2023-05-15 | Signal processing device and terminal equipment |
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| CN (1) | CN220087287U (en) |
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