CN115441881A - Linkage antenna circuit and terminal - Google Patents
Linkage antenna circuit and terminal Download PDFInfo
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- CN115441881A CN115441881A CN202210875647.3A CN202210875647A CN115441881A CN 115441881 A CN115441881 A CN 115441881A CN 202210875647 A CN202210875647 A CN 202210875647A CN 115441881 A CN115441881 A CN 115441881A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1415—Two-way operation using the same type of signal, i.e. duplex using control lines
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Abstract
The application discloses linkage antenna circuit and terminal relates to the technical field of communication. The circuit comprises a first antenna, a second antenna, a third antenna, a first type filter circuit, a second type filter circuit, a selector switch circuit, a narrow-band communication circuit and a broadband communication circuit, wherein the narrow-band communication circuit is connected to the first antenna through the first type filter circuit; the broadband communication circuit is connected to the first antenna through the changeover switch circuit and the second type filter circuit, and is connected to the second antenna and the third antenna through the changeover switch circuit, so that the first antenna and the second antenna are selected to perform broadband communication, or the first antenna and the third antenna are selected to perform broadband communication, or the first antenna, the second antenna and the third antenna are selected to perform broadband communication. The method and the device can realize simultaneous receiving and transmitting of the broadband communication signals and the narrowband communication signals, can also realize independent receiving and transmitting, can flexibly select the antenna channel, improve the efficiency of broadband communication, and improve the whole receiving and transmitting capacity.
Description
Technical Field
The application relates to the technical field of communication, in particular to a linkage antenna circuit and a terminal.
Background
In the current terminal, an antenna set in broadband communication is a built-in antenna, and the built-in antenna is divided into a main set transceiving antenna and a diversity receiving antenna. Considering antenna, structure and radio frequency layout, the main set antenna is placed at the bottom of the terminal, and the diversity antenna is placed at the top of the terminal. The antenna set during narrow-band communication is an external antenna. Due to the characteristics of the terminal and the stacking factor of the structure, the efficiency of a low frequency band (729-960 MHz) of the built-in antenna in broadband communication is low, and especially the efficiency of the diversity antenna is low. The broadband communication of the terminal is usually deployed by adopting a low frequency band, and when a private network video is pulled up or big data is downloaded, the rate is not good due to low efficiency of a built-in antenna of the terminal, and the whole transceiving capacity of the terminal is reduced.
Disclosure of Invention
The application provides a linkage antenna circuit and a terminal, so that the broadband communication efficiency of the terminal is improved, and the overall receiving and transmitting capacity of the terminal is improved.
In order to solve the technical problem, the application adopts a technical scheme that: a linkage antenna circuit is provided, which comprises a first antenna, a second antenna, a third antenna, a first type filter circuit, a second type filter circuit, a switch circuit, a narrow-band communication circuit and a wide-band communication circuit.
The first antenna is used for narrow-band communication; the narrow-band communication circuit is connected to the first antenna through the first type filter circuit to perform narrow-band communication; the broadband communication circuit is connected to the first antenna through the selector switch circuit and the second type filter circuit, and is connected to the second antenna and the third antenna through the selector switch circuit, so that the first antenna and the second antenna are selected to perform broadband communication, or the first antenna and the third antenna are selected to perform broadband communication, or the first antenna, the second antenna and the third antenna are selected to perform broadband communication; when the first antenna and the second antenna are selected to perform broadband communication, the signal received by the first antenna passes the narrow-band signal therein to the narrow-band communication circuit through the first type of filter circuit, and the signal received by the first antenna passes the broadband signal therein to the broadband communication circuit through the second type of filter circuit.
Wherein when the second antenna performs transceiving of a main set signal in broadband communication, the changeover switch circuit is configured to select one of the first antenna and the third antenna, which has a strong reception capability, to communicate with the broadband communication circuit to perform reception of a diversity signal in the broadband communication; when the first antenna performs transmission and reception of a main set signal in broadband communication, the changeover switch circuit is configured to select one of the second antenna and the third antenna, which has a strong reception capability, to connect with the broadband communication circuit to perform reception of a diversity signal in the broadband communication.
The working modes of the linkage antenna circuit comprise a first mode, a second mode and a third mode; when the ganged antenna circuit works in a first mode, the switch circuit is configured to enable the first antenna to be used for transceiving narrowband signals in narrowband communication, the second antenna to be used for transceiving main set signals in broadband communication, and the third antenna to be used for receiving diversity signals in broadband communication; when the ganged antenna circuit is operated in the second mode, the change-over switch circuit is configured to enable the first antenna to be used for transceiving narrowband signals in narrowband communication, the second antenna to be used for transceiving main set signals in broadband communication, and the first antenna to be used for receiving diversity signals in broadband communication; when the ganged antenna circuit is operated in the third mode, the switch circuit is configured to cause the first antenna to be used for transceiving narrowband signals in narrowband communication, and the first antenna is also used for transceiving main set signals in wideband communication, and the second antenna is used for receiving diversity signals in wideband communication.
Wherein, when the first antenna is abnormally operated, the changeover switch circuit is configured to operate the linked antenna circuit in the first mode.
The switching circuit comprises a first switch and a second switch, the first switch comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end, the first connecting end of the first switch is used for connecting the second type filter circuit, the second connecting end of the first switch is used for connecting the second antenna, and the fourth connecting end of the first switch is used for connecting the broadband communication circuit; the second switch comprises a first connecting end, a second connecting end and a third connecting end, the first connecting end of the second switch is used for connecting the third connecting end of the first switch, the second connecting end of the second switch is used for connecting a third antenna, and the third connecting end of the second switch is used for connecting the broadband communication circuit; when the first antenna transmits or receives a main set signal of broadband communication, the first connecting end of the first switch is communicated with the fourth connecting end of the first switch, so that the broadband communication circuit is communicated to the first antenna through the first switch; when the second antenna performs transmission or reception of a main set signal of broadband communication, the second connection terminal of the first switch communicates with the fourth connection terminal of the first switch, so that the broadband communication circuit communicates to the second antenna through the first switch; when the first antenna performs receiving of a diversity signal of broadband communication, the first connection end of the first switch is communicated with the third connection end of the first switch, and the first connection end of the second switch is communicated with the third connection end of the second switch, so that the broadband communication circuit is communicated to the first antenna through the first switch and the second switch; when the second antenna performs reception of a diversity signal of broadband communication, the second connection terminal of the first switch communicates with the third connection terminal of the first switch, and the first connection terminal of the second switch communicates with the third connection terminal of the second switch, so that the broadband communication circuit communicates to the second antenna through the first switch and the second switch; when the third antenna performs reception of a diversity signal of broadband communication, the second connection terminal of the second switch communicates with the third connection terminal of the second switch, so that the broadband communication circuit communicates to the third antenna through the second switch.
The switching circuit further comprises a coupling filter module, and the fourth connecting end of the first switch is connected to the broadband communication circuit through the coupling filter module.
The switch circuit further comprises a third switch and a second antenna switch. The third switch comprises a first connecting end, a second connecting end and a third connecting end, wherein the first connecting end of the third switch is connected to the coupling filtering module, and the third connecting end of the third switch is connected to the broadband communication circuit; the second antenna change-over switch comprises at least one sending and receiving end, an antenna end and a control power feedback end, wherein the second connecting end of the first switch is connected with one sending and receiving end of the second antenna change-over switch; when the first antenna transmits the main set signal of the broadband communication, the first connecting end of the third switch is communicated with the third connecting end of the third switch, so that the broadband communication circuit is communicated to the coupling filtering module through the third switch; when the second antenna performs transmission of a main set signal of broadband communication, the second connection terminal of the third switch communicates with the third connection terminal of the third switch, so that the broadband communication circuit communicates to the control power feedback terminal of the second antenna changeover switch through the third switch.
The coupling filter module comprises a coupler and a duplex filter, wherein the coupler comprises a first connecting end, a second connecting end and a third connecting end, the first connecting end of the coupler is connected with the fourth connecting end of the first switch, and the second connecting end of the coupler is connected with the first connecting end of the third switch; the duplex filter includes a first connection terminal, a second connection terminal, and a third connection terminal, wherein the first connection terminal of the duplex filter is connected to the third connection terminal of the coupler, and the second connection terminal and the third connection terminal of the duplex filter are connected to the broadband communication circuit.
The change-over switch circuit further comprises a third antenna change-over switch and a filtering module, wherein the third antenna change-over switch comprises at least one transmitting and receiving end and an antenna end, one transmitting and receiving end of the third antenna change-over switch is connected to the second connecting end of the second switch, and the antenna end of the third antenna change-over switch is connected to the third antenna; the filtering module is connected between the third connecting end of the second switch and the broadband communication circuit.
The linkage antenna circuit further comprises a microstrip coupling circuit, and the microstrip coupling circuit is coupled with the first antenna and connected to the narrow-band communication circuit.
In order to solve the technical problem, the other technical scheme adopted by the application is as follows: there is provided a terminal comprising a ganged antenna circuit as claimed in any preceding claim.
The beneficial effect of this application is: different from the situation in the prior art, the linkage antenna circuit enables the terminal to be connected to the first antenna through the switch circuit when broadband communication is carried out by arranging the first type filter circuit, the second type filter circuit and the switch circuit on the basis of the prior art, and the first antenna and the second antenna are selected to carry out broadband communication through the switch circuit, or the first antenna and the third antenna are selected to carry out broadband communication, or the first antenna, the second antenna and the third antenna are selected to carry out broadband communication. When the terminal is in broadband communication, the channels of the first antenna, the second antenna and the third antenna can be shared and switched in real time, so that the efficiency of broadband communication is improved and the overall transceiving capacity of the terminal is improved on the premise of ensuring that dual-mode communication of broadband communication and narrow-band communication is carried out simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
fig. 1 is a schematic structural diagram of a first embodiment of a cooperative antenna circuit of the present application;
FIG. 2 is a schematic diagram of a second embodiment of a cooperative antenna circuit of the present application;
FIG. 3 is a schematic diagram of a third embodiment of a cooperative antenna circuit according to the present application;
fig. 4 is a schematic structural diagram of an embodiment of the terminal of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
First, a linked antenna circuit is provided, please refer to fig. 1, where fig. 1 is a schematic structural diagram of a first embodiment of the linked antenna circuit. As shown in fig. 1, the linked antenna circuit 100 of the present embodiment includes a first antenna 10, a second antenna 20, a third antenna 30, a first-type filter circuit 40, a second-type filter circuit 50, a switch circuit 60, a narrowband communication circuit 70, and a wideband communication circuit 80.
The first antenna 10 is used for narrowband communication. The narrowband communication is a communication technology before the broadband technology appears, the theoretical channel bandwidth is small, the transmission of a small amount of voice text information can be met, and for video, audio and image information of a large amount of data, the communication technology such as PDT, DMR and the like cannot be carried. In this embodiment, the narrowband signal of the narrowband communication is a transmission key control frequency band signal with a frequency lower than 470 MHz. Broadband communication refers to a radio technology applied to a public land mobile network, for example, a radio communication technology such as 3G, LTE, 4G, and 5G. The broadband signal of the broadband communication in this embodiment refers to a cellular frequency band signal having a frequency of 699-960 MHz.
The narrow band communication circuit 70 is connected to the first antenna 10 through the first type filter circuit 40 to perform narrow band communication. The broadband communication circuit 80 is connected to the first antenna 10 through the changeover switch circuit 60 and the second-type filter circuit 50, and is connected to the second antenna 20 and the third antenna 30 through the changeover switch circuit 60 to select the first antenna 10 and the second antenna 20 to perform broadband communication, or select the first antenna 10 and the third antenna 30 to perform broadband communication, or select the first antenna 10, the second antenna 20 and the third antenna 30 to perform broadband communication. When the first antenna 10 and the second antenna 20 are selected to perform wideband communication, the signal received by the first antenna 10 can pass the narrowband signal therein through the first type of filter circuit 40 to the narrowband communication circuit 70, and the signal received by the first antenna 10 can pass the wideband signal therein through the second type of filter circuit 50 to the wideband communication circuit 80, so that the first antenna 10 has the capability of both narrowband communication and wideband communication.
In this embodiment, the first type filter circuit 40 may be configured as a multi-order low-pass filter circuit, and the low-pass filter circuit is used to deeply suppress the cellular frequency band signal of the broadband communication, so as to control the frequency band signal by the transmission key with a frequency lower than 470 MHz; the second type filter circuit 50 may be configured as a multi-order high-pass filter circuit, the high-pass filter circuit is configured to deeply suppress a transmission key control frequency band signal of the narrowband communication, so as to pass a cellular frequency band signal with a frequency of 699-960MHz, the first antenna 10 is respectively connected to the narrowband communication circuit 70 and the wideband communication circuit 80 through the first type filter circuit 40 and the second type filter circuit 50, the first antenna 10 may have the capability of performing the narrowband communication and the wideband communication simultaneously, and the first type filter circuit 40 and the second type filter circuit 50 may be configured to avoid interference of other signals when the other signals perform the wideband/narrowband communication on the first antenna 10.
The narrow-band communication circuit 70 includes a narrow-band transmitting/receiving unit, a standing-wave ratio detecting unit, and a control unit, and the wide-band communication circuit 80 includes a power amplifier, a wide-band transceiver, and a control unit.
The present embodiment further provides a switch circuit 60, the switch circuit 60 is connected to the second-type filter circuit 50, the second antenna 20, the third antenna 30, and the broadband communication circuit 80, respectively, and by switching the switch circuit 60, when broadband communication is performed, the first antenna 10 and the second antenna 20 may be selected to perform broadband communication, the first antenna 10 and the third antenna 30 may be selected to perform broadband communication, or the first antenna 10, the second antenna 20, and the third antenna 30 may be selected to perform broadband communication based on the switch circuit 60.
The first antenna 10 is an external antenna, the second antenna 20 is an internal main set antenna, and the third antenna 30 is an internal diversity antenna, and considering antenna, structure and radio frequency layout, the internal main set antenna is generally placed at the bottom of the terminal, the internal diversity antenna is generally placed at the top of the terminal, and due to the stacking factor of the terminal structure, the efficiency of the internal antenna in the low frequency band is low, and especially the efficiency of the internal diversity antenna is low. Compared with the antenna efficiency, the efficiency of the external antenna is higher than that of the built-in main set antenna, and the efficiency of the built-in main set antenna is higher than that of the built-in diversity antenna. By arranging the change-over switch circuit 60, when broadband communication is carried out, the first antenna 10 and the second antenna 20 can be selected to carry out broadband communication, or the first antenna 10 and the third antenna 30 can be selected to carry out broadband communication, or the first antenna 10, the second antenna 20 and the third antenna 30 can be selected to carry out broadband communication, so that the efficiency of broadband communication can be improved, and the whole transceiving capacity of the terminal can be improved.
Different from the prior art, the linked antenna circuit 100 of the present application, on the basis of the prior art, is provided with the first type filter circuit 40, the second type filter circuit 50 and the switch circuit 60, so that the terminal can be connected to the first antenna 10 through the switch circuit 60 during broadband communication, and the switch circuit selects the first antenna 10 and the second antenna 20 to perform broadband communication, or selects the first antenna 10 and the third antenna 30 to perform broadband communication, or selects the first antenna 10, the second antenna 20 and the third antenna 30 to perform broadband communication. When the terminal performs broadband communication, the channels of the first antenna 10, the second antenna 20, and the third antenna 30 may be shared and switched in real time, so as to improve the efficiency of broadband communication and the overall transceiving capability of the terminal on the premise of ensuring that dual-mode communication of broadband communication and narrowband communication is performed simultaneously.
Specifically, the working modes of the linkage antenna circuit include a first mode, a second mode and a third mode, the first mode is a default working mode, the second mode is a diversity capability improving mode, and the third mode is a main diversity capability improving mode.
When the ganged antenna circuit 100 is operating in the default mode of operation, i.e., the first mode, the switch circuit 60 is configured to cause the first antenna 10 to be used for transceiving narrowband signals in narrowband communication, the second antenna 20 to be used for transceiving main set signals in wideband communication, and the third antenna 30 to be used for receiving diversity signals in wideband communication.
When the coordinated antenna circuit 100 operates in the diversity improvement mode, that is, in the second mode, the diversity improvement mode refers to that the coordinated antenna circuit 100 improves the efficiency of diversity reception signals in broadband communication to ensure the quality of the received signals. The switch circuit 60 is configured such that the first antenna 10 is used for transceiving narrowband signals in narrowband communication, the second antenna 20 is used for transceiving main set signals in wideband communication, and the first antenna 10 is also used for receiving diversity signals in wideband communication.
When the coordinated antenna circuit 100 works in the master-set capability improvement mode, that is, in the third mode, the master-set capability improvement mode refers to that the coordinated antenna circuit 100 improves the efficiency of receiving and reflecting signals by the master set in the broadband communication, so as to ensure the quality of receiving and transmitting signals by the master set. The switch circuit 60 is configured such that the first antenna 10 is used for transceiving narrowband signals in narrowband communication, and the first antenna 10 is also used for transceiving main set signals in wideband communication, and the second antenna 20 is used for receiving diversity signals in wideband communication.
When the first antenna 10 is operating abnormally, the switcher circuit 60 is configured to operate the ganged antenna circuit 100 in the first mode, i.e., the default operating mode. The default operating mode is that the switch circuit 60 is configured to enable the first antenna 10 to be used for transceiving narrowband signals in narrowband communication, the second antenna 20 to be used for transceiving main set signals in wideband communication, and the third antenna 30 to be used for receiving diversity signals in wideband communication.
The linkage antenna circuit 100 of the application not only can realize the simultaneous implementation of wide and narrow band communication, but also can substantially simultaneously improve the receiving and sending performance of the main set signal and the receiving performance of the diversity signal of the broadband communication of the linkage antenna circuit 100 through the change-over switch circuit 60 by setting the second mode (diversity capacity improving mode) and the third mode (main set capacity improving mode), thereby improving the use experience of users.
Optionally, referring to fig. 2, fig. 2 is a schematic structural diagram of a linkage antenna circuit according to a second embodiment of the present application, and as shown in fig. 2, a switch circuit 60 of the linkage antenna circuit 100 of the present embodiment includes a first switch 61 and a second switch 62.
The first switch 61 comprises a first connection RF1, a second connection RF2, a third connection RF3 and a fourth connection RF4, wherein the first connection RF1 of the first switch 61 is used for connecting the second type filter circuit 50, the second connection RF2 of the first switch 61 is used for connecting the second antenna 20, and the fourth connection RF4 of the first switch 61 is used for connecting the broadband communication circuit 80.
The first switch 61 may be a General-purpose input/output (GPIO) logic control device, and may be configured as a double-pole double-throw switch, where the first switch 61 mainly functions to perform switching between the connection between the first connection terminal RF1 and the third connection terminal RF 3/fourth connection terminal RF4 and the connection between the second connection terminal RF2 and the third connection terminal RF 3/fourth connection terminal RF4 according to a high-low level control command, and a specific switching path is determined by a logic table of the terminal itself. In other embodiments, the first switch 61 may also be another logic control device, and only the function of the first switch 61 is required to be satisfied, which is not limited herein.
The second switch 62 includes a first connection RF5, a second connection RF6 and a third connection ANT1, the first connection RF5 of the second switch is used for connecting the third connection RF3 of the first switch 61, the second connection RF6 of the second switch 62 is used for connecting the third antenna 30, and the third connection ANT1 of the second switch 62 is used for connecting the broadband communication circuit 80.
The second switch 62 may also be a GPIO logic control device, and may be set as a single-pole double-throw switch, which is mainly used to perform switching between the connection between the first connection terminal RF5 and the third connection terminal ANT1 of the second switch 62 and the connection between the second connection terminal RF6 and the third connection terminal ANT1 of the second switch 62 according to a high-low level control instruction, where a specific switching path is determined by a logic table of the terminal itself. In other embodiments, the second switch 62 may also be another logic control device, and only the function of the second switch 62 is required to be satisfied, which is not limited herein.
When the first antenna 10 performs transmission or reception of a main set signal of broadband communication, the first connection RF1 of the first switch 61 communicates with the fourth connection RF4 of the first switch 61, so that the broadband communication circuit 80 communicates to the first antenna 10 through the first switch 61.
When the first antenna 10 performs transmission or reception of a main set signal of broadband communication, the first switch 61 enables the first connection end RF1 of the first switch 61 to be communicated with the fourth connection end RF4 of the first switch 61 based on the first switching path control instruction, so that the broadband communication circuit 80 is connected to the first antenna 10 through the first switch 61, and the first antenna 10 is used for transmission or reception of the main set signal of broadband communication, and because the first antenna 10 is an external antenna, the efficiency is higher compared with the second antenna 20 and the third antenna 30 of the internal antenna, thereby improving the main set transceiving performance of broadband communication.
When the second antenna 20 performs transmission or reception of the main set signal of the broadband communication, the second connection terminal RF2 of the first switch 61 communicates with the fourth connection terminal RF4 of the first switch 61, so that the broadband communication circuit communicates to the second antenna 20 through the first switch 61.
When the first antenna 10 performs reception of a diversity signal of broadband communication, the first connection terminal RF1 of the first switch 61 communicates with the third connection terminal RF3 of the first switch 61, and the first connection terminal RF5 of the second switch 62 communicates with the third connection terminal ANT1 of the second switch 62, so that the broadband communication circuit communicates to the first antenna 10 through the first switch 61 and the second switch 62.
When the first antenna 10 performs receiving of a diversity signal of broadband communication, the first connection terminal RF1 of the first switch 61 is communicated with the third connection terminal RF3 of the first switch 61 based on the first switching path control signal, and the first connection terminal RF5 of the second switch 62 is communicated with the third connection terminal ANT1 of the second switch 62 based on the second switching path control signal, so that the first antenna 10 is applied to receiving of the diversity signal of broadband communication, and since the first antenna 10 is an external antenna, it is more efficient than the second antenna 20 and the third antenna 30 of the internal antenna, thereby improving the receiving performance of the diversity of broadband communication.
When the second antenna 20 performs reception of a diversity signal of broadband communication, the second connection terminal RF2 of the first switch 61 communicates with the third connection terminal RF3 of the first switch 61, and the first connection terminal RF5 of the second switch 62 communicates with the third connection terminal ANT1 of the second switch 62, so that the broadband communication circuit communicates to the second antenna 20 through the first switch 61 and the second switch 62.
When the second antenna 20 performs reception of a diversity signal of broadband communication, the second connection terminal RF2 of the first switch 61 is communicated with the third connection terminal RF3 of the first switch 61 based on the first switching path control signal, and the first connection terminal RF5 of the second switch 62 is communicated with the third connection terminal ANT1 of the second switch 62 based on the second switching path control signal, so that the second antenna 20 is applied to reception of the diversity signal of broadband communication, and the second antenna 20 has higher efficiency than the third antenna 30, thereby improving the reception performance of the diversity of broadband communication.
When the third antenna 30 performs reception of a diversity signal of the broadband communication, the second connection terminal RF6 of the second switch 62 communicates with the third connection terminal ANT1 of the second switch 62, so that the broadband communication circuit communicates to the third antenna 30 through the second switch 62.
In an application scenario, when the cooperative antenna circuit 100 operates in a default operation mode, that is, in a first mode, when the narrowband communication circuit 70 performs narrowband signal transmission and reception, the first antenna 10 is connected through the first type filter circuit 40 to perform narrowband communication, when the broadband communication circuit 80 performs main set signal transmission and reception, the second connection terminal RF2 of the first switch 61 is connected to the fourth connection terminal RF4, the broadband communication circuit 80 is connected to the second antenna 20 through the first switch 61 to perform main set signal transmission and reception, when the broadband communication circuit 80 performs diversity signal reception, the second connection terminal RF6 of the second switch 62 is connected to the third connection terminal ANT1 thereof, and the broadband communication circuit 80 is connected to the third antenna 30 through the second switch 62 to perform diversity signal reception.
When the linked antenna circuit 100 operates in the diversity capability improving mode, the first antenna 10 is connected through the first type filter circuit 40 to perform narrowband communication when the narrowband communication circuit 70 performs narrowband signal transmission and reception, the fourth connection terminal RF4 is connected to the second connection terminal RF2 of the first switch 61 when the broadband communication circuit 80 performs main signal transmission and reception, the second antenna 20 is connected to the broadband communication circuit 80 through the first switch 61 to perform main signal transmission and reception, the third connection terminal RF3 is connected to the first connection terminal RF1 of the first switch 61, the third connection terminal ANT1 is connected to the first connection terminal RF5 of the second switch 62 when the broadband communication circuit 80 performs diversity signal reception, and the first antenna 10 is connected to the broadband communication circuit 80 through the first switch 61 and the second switch 62 to perform diversity signal reception, so as to improve the diversity signal reception capability.
In other embodiments, when the broadband communication circuit 80 receives and transmits the main set signal through the second antenna 20 and receives the diversity signal, the receiving capabilities of the first antenna 10 and the third antenna 30 may be compared, and one of the first antenna 10 and the third antenna 30 with better receiving capability may be selected for access; when the broadband communication circuit 80 receives the diversity signal while transmitting and receiving the main set signal through the first antenna 10, the reception capabilities of the second antenna 20 and the third antenna 30 may be compared, and one of the second antenna 20 and the third antenna 30 having a better reception capability may be selected for access.
When the coordinated antenna circuit 100 works in the master boost mode, the narrowband communication circuit 70 still connects the first antenna 10 through the first type filter circuit 40 to perform narrowband communication when transmitting and receiving narrowband signals, and when the broadband communication circuit 80 transmits and receives master signals, the first connection end RF1 of the first switch 61 connects the fourth connection end RF4, and the broadband communication circuit 80 connects the first antenna 10 through the first switch 61 to perform master signal transmission and reception.
Different from the prior art, the linkage antenna circuit 100 of the present application optimizes the circuit design by setting the change-over switch circuit switch 60, and integrates the service logic correlation, so that each antenna channel can be fully shared and switched in real time. On the premise of ensuring that the broadband and narrowband communication can be carried out simultaneously, the antenna coverage efficiency during the broadband communication is improved, the whole receiving and sending capability of the terminal is improved, and therefore the user experience is improved.
Optionally, referring to fig. 3, fig. 3 is a schematic structural diagram of a third embodiment of the linked antenna circuit of the present application, and as shown in fig. 3, the switch circuit 60 of the present embodiment further includes a coupling filtering module 63, a third switch 64, and a second antenna switch 65.
The fourth connection RF4 of the first switch 61 is connected to the broadband communication circuit 80 via a coupling filter module 63.
The third switch 64 includes a first connection terminal RF7, a second connection terminal RF8, and a third connection terminal ANT2, wherein the first connection terminal RF7 of the third switch 64 is connected to the coupling filter module 63, and the third connection terminal ANT2 of the third switch 64 is connected to the broadband communication circuit 80.
In this embodiment, the third switch 64 and the second switch 62 are both single-pole double-throw switches, and are not described herein again.
The second antenna changeover switch 65 includes at least one transmitting and receiving terminal TRX1, an antenna terminal ANT _ IN1 and a control power feedback terminal CPL, wherein the second connection terminal RF2 of the first switch 61 is connected to the one transmitting and receiving terminal TRX1 of the second antenna changeover switch 65, the second antenna 20 is connected to the antenna terminal ANT _ IN1 of the second antenna changeover switch 65 to connect the second antenna 20 and the first switch 61 through the second antenna changeover switch 65, and the second connection terminal RF8 of the third switch 64 is connected to the control power feedback terminal CPL of the second antenna changeover switch 65.
IN this embodiment, the second antenna switch 65 is a Mobile Industry Processor Interface (MIPI) logic control device, and is configured as a main set antenna switch, and mainly functions to switch a signal at the antenna end ANT _ IN1 to a certain transmitting/receiving end at a certain time according to a control instruction, where a specific switching path instruction is determined by a logic table of the device itself.
When the first antenna 10 performs transmission of a main set signal of broadband communication, the first connection terminal RF7 of the third switch 64 communicates with the third connection terminal ANT2 of the third switch 64, so that the broadband communication circuit 80 communicates with the coupling filter module 63 through the third switch 64, thereby performing transmission power verification.
When the second antenna 20 performs transmission of the main set signal of the broadband communication, the second connection terminal RF8 of the third switch 64 communicates with the third connection terminal ANT2 of the third switch 64, so that the broadband communication circuit 80 communicates to the control power feedback terminal CPL of the second antenna changeover switch 65 through the third switch 64, thereby performing transmission power verification.
In this embodiment, the pickup signal unit in the broadband communication circuit 80 performs pickup when the dominant set signal is transmitted, and when the dominant set signal is transmitted through the second antenna 20, the pickup signal unit passes through the third switch 64, the third connection terminal ANT2 of the third switch 64 communicates with the second connection terminal RF8, and the path is connected to the control power feedback terminal CPL of the second antenna changeover switch.
When the main set signal is transmitted through the first antenna 10, the detection signal unit passes through the third switch 64, the third connection ANT2 of the third switch 64 is communicated with the first connection RF7, and the path is connected to the coupling filter module 63, that is, the third switch 64 selects a certain detection path to access the broadband transceiver in the broadband communication circuit 80 according to the logic control instruction.
Optionally, referring to fig. 3, the coupling filter module 63 of the present embodiment includes a coupler 631 and a duplex filter 632, where the coupler 631 includes a first connection end 1, a second connection end 2, and a third connection end 3, where the first connection end 1 of the coupler 631 is connected to the fourth connection end RF4 of the first switch 61, and the third connection end 3 of the coupler 631 is connected to the first connection end RF7 of the third switch 64; the duplex filter 632 includes a first connection end 4, a second connection end 5, and a third connection end 6, wherein the first connection end 4 of the duplex filter 632 is connected to the second connection end 2 of the coupler 631, and the second connection end 5 and the third connection end 6 of the duplex filter 632 are connected to the broadband communication circuit 80, so as to respectively transmit the filtered reception signal to the broadband communication circuit 80, or receive the transmission signal from the broadband communication circuit 80 and transmit the transmission signal to the coupler 631 after filtering.
In this embodiment, the coupler 631 is a passive device, and mainly functions to couple a path of power to a control unit in the broadband communication circuit 80 by controlling the power feedback terminal CPL after the transmission power is input to output, and the control unit determines the magnitude of the transmission power.
The duplex filter 632 is a passive device, and in this embodiment mainly functions to filter the received and transmitted signals, and send the filtered signals to the next unit.
Optionally, referring to fig. 3, the switch circuit 60 of the present embodiment further includes a third antenna switch 66 and a filtering module 67.
The third antenna changeover switch 66 includes at least one transmitting and receiving terminal TRX2 and an antenna terminal ANT _ IN2, wherein the one transmitting and receiving terminal TRX2 of the third antenna changeover switch 66 is connected to the second connection terminal RF6 of the second switch 62, and the antenna terminal ANT _ IN2 of the third antenna changeover switch 66 is connected to the third antenna 30 to connect the third antenna 30 and the second switch 62 through the third antenna changeover switch 66.
The third antenna switch 66 is also an MIPI logic control device, and is set as a diversity antenna switch, and the function of the diversity antenna switch is the same as that of the second antenna switch 65, which is not described again.
The filter module 67 is connected between the third connection ANT1 of the second switch 62 and the broadband communication circuit 80.
In this embodiment, the filtering module 67 may be configured as a filter, and the filter mainly functions to filter the received signal and then send the filtered signal to the next unit.
Specifically, when the second antenna 20 performs transmission and reception of the main set signal in the broadband communication, the changeover switch circuit 60 is configured to select one of the first antenna 10 and the third antenna 30, which has a strong receiving capability, to connect with the broadband communication circuit 80 to perform reception of the diversity signal in the broadband communication.
When the first antenna 10 performs transmission and reception of the main set signal in the broadband communication, the changeover switch circuit 60 is configured to select one of the second antenna 20 and the third antenna 30, which has a strong receiving capability, to connect with the broadband communication circuit 80 to perform reception of the diversity signal in the broadband communication.
Optionally, referring to fig. 3, the coordinated antenna circuit 100 further includes a microstrip coupling circuit 90, and the microstrip coupling circuit 90 is coupled to the first antenna 10 and connected to the narrowband communication circuit 70 for performing narrowband transmission power wave test on the first antenna 10.
Wherein the microstrip coupler circuit 90 is connected to a control unit in the narrowband communication circuit 70 for power-rectifying the first antenna 10 and for providing a standing-wave ratio.
Specifically, when it is recognized that the interface standing wave ratio of the first antenna 10 is greater than a certain threshold, the coordinated antenna circuit 100 switches back to the default operating mode, ensuring the availability of the broadband communication circuit.
In one application scenario, as shown in fig. 3, the principle of the linked antenna circuit 100 of the present application is described in detail as follows:
1. the main set signal in the broadband communication circuit 80 is transmitted, the main set signal output from the power amplifier of the broadband communication circuit 80 passes through the second connection end 5 to the first connection end 4 of the duplex filter 632 to be output through a path, and enters the second connection end 2 of the coupler 631, and passes through the second connection end 2 of the coupler 631 to enter the first connection end 1 thereof to enter the fourth connection end RF4 of the first switch 61, and at this time, according to the service logic control, there are two cases:
(1) The main signal is transmitted through the first antenna 10, the fourth connection RF4 of the first switch 61 is connected to the first connection RF1, the main signal enters the second type filter circuit 50, and is finally transmitted through the first antenna 10, and the power detection is performed through the first connection RF7 of the third switch 64 to the third connection ANT2 thereof to be connected to the third connection 3 of the coupler 631, so as to send the coupled power to the broadband transceiver in the broadband communication circuit 80 for detection.
(2) The main set signal is transmitted through the second antenna 20, after entering the first switch 61 through the path from the second connection end 2 to the first connection end 1 of the coupler 631, the fourth connection end RF4 of the first switch 61 is communicated with the second connection end RF2 thereof, the main set signal enters the transmitting and receiving end TRX1 of the second antenna switch 65 through the path from the fourth connection end RF4 of the first switch 61 to the second connection end RF2 thereof, and finally is transmitted through the second antenna 20 after passing through the path from the transmitting and receiving end TRX1 of the second antenna switch 65 to the antenna end ANT _ IN1 thereof, and at this time, the power detection is connected to the control power feedback end CPL of the second antenna switch 65 through the path from the second connection end RF8 of the third switch to the third connection end ANT2 thereof, and the coupling power is transmitted to the broadband transceiver IN the broadband communication circuit 80 for detection.
2. The master set signal reception in the broadband communication circuit 80, according to the service logic control, has two cases:
(1) The second antenna 20 receives the master signal, the second antenna 20 is connected to the antenna terminal ANT _ IN1, the master signal received by the antenna terminal ANT _ IN1 enters the antenna terminal ANT _ IN1 of the second antenna switch 65, passes through the path from the antenna terminal ANT _ IN1 of the second antenna switch 65 to the transmitting and receiving terminal TRX1, enters the second connection terminal RF2 of the first switch 61, passes through the path from the second connection terminal RF2 of the first switch 61 to the fourth connection terminal RF4, enters the coupler 631, and passes through the duplex filter 632 to send the signal to the broadband transceiver IN the broadband communication circuit 80.
(2) The first antenna 10 receives the main set signal, and after passing through the second type filter circuit 50, the main set signal enters the first connection RF1 of the first switch 61, and then enters the coupler 631 through the path from the first connection RF1 to the fourth connection RF4 of the first switch 61, and then the main set signal is sent to the broadband transceiver in the broadband communication circuit 80 through the duplex filter 632.
3. There are three situations for broadband diversity signal reception in the broadband communication circuit 80, according to service logic control:
(1) The third antenna 30 receives the diversity signal, and after passing through a path from the antenna terminal ANT _ IN2 of the third antenna changeover switch 66 to the transmitting and receiving terminal TRX2, the diversity signal enters the second connection terminal RF6 of the second switch 62, passes through a path from the second connection terminal RF6 of the second switch 62 to the third connection terminal ANT1 thereof, enters the filtering module 67, and finally passes through a path of the filtering module 67, and is sent to the broadband transceiver IN the broadband communication circuit 80.
(2) The first antenna 10 receives the diversity signal, enters the first connection terminal RF1 of the first switch 61 after passing through the second type filter circuit 50, enters the first connection terminal RF5 of the second switch 62 after passing through the path from the first connection terminal RF1 to the third connection terminal RF3 of the first switch 61, enters the filter module 67 after passing through the path from the first connection terminal RF5 of the second switch 62 to the third connection terminal ANT1 thereof, and finally enters the wideband transceiver in the wideband communication circuit 80 after passing through the path of the filter module 67.
(3) The second antenna 20 receives the diversity signal, enters the ANT _ IN1 port of the second antenna switch 65, passes through the path from the antenna end ANT _ IN1 of the second antenna switch 65 to the transmitting and receiving end TRX1, then enters the second connection end RF2 of the first switch 61, passes through the path from the second connection end RF2 of the first switch 61 to the third connection end RF3, enters the first connection end RF5 of the second switch 62, passes through the path from the first connection end RF5 of the second switch 62 to the third connection end ANT1 thereof, enters the filtering module 67, and finally passes through the path of the filtering module 67 and then enters the wideband transceiver IN the wideband communication circuit 80.
Referring to fig. 3, the logical control terminal MIPI of the second antenna switch 65 is connected to the broadband control unit, and the transmitting/receiving terminal TRX1 currently used by the second antenna switch 65 is not fixed, and may be another TRX port. The logic control terminal MIPI of the third antenna changeover switch 66 is connected to the broadband control unit, and the transmitting and receiving terminal TRX2 currently used by the third antenna changeover switch 66 is not fixed, and may be another TRX port. The switch control ports of the first switch 61, the second switch 62 and the third switch 64 are connected with the broadband control unit, and the connection ends are not fixed and can be adjusted according to practical application. The power supply of all units is provided by a power supply system.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of the terminal of the present application, and a terminal 200 of the present embodiment includes the linked antenna circuit 100 disclosed in the foregoing embodiment. The terminal 200 of the present embodiment may be a handheld broadband terminal, such as an intercom, and is not limited herein.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (11)
1. A linked antenna circuit, comprising:
a first antenna, a second antenna and a third antenna, wherein the first antenna is used for narrowband communication;
a narrowband communication circuit connected to the first antenna through a first type filter circuit to perform narrowband communication;
a broadband communication circuit connected to the first antenna through a switch circuit and a second type filter circuit, and connected to the second antenna and the third antenna through the switch circuit, so as to select the first antenna and the second antenna to perform broadband communication, or select the first antenna and the third antenna to perform broadband communication, or select the first antenna, the second antenna and the third antenna to perform broadband communication;
when the first antenna and the second antenna are selected to perform broadband communication, the signal received by the first antenna passes the narrow-band signal therein to the narrow-band communication circuit through the first type of filter circuit, and the signal received by the first antenna passes the wide-band signal therein to the broadband communication circuit through the second type of filter circuit.
2. The ganged antenna circuit of claim 1,
when the second antenna performs transceiving of a main set signal in the broadband communication, the changeover switch circuit is configured to select one of the first antenna and the third antenna, which has a strong reception capability, to connect with the broadband communication circuit to perform reception of a diversity signal in the broadband communication;
when the first antenna performs transceiving of a main set signal in the broadband communication, the changeover switch circuit is configured to select one of the second antenna and the third antenna, which has a strong reception capability, to communicate with the broadband communication circuit to perform reception of a diversity signal in the broadband communication.
3. The ganged antenna circuit according to claim 2, wherein the modes of operation of the ganged antenna circuit comprise a first mode, a second mode, and a third mode;
when the ganged antenna circuit is operating in the first mode, the switch circuit is configured to cause the first antenna to transceive narrowband signals in the narrowband communication, the second antenna to transceive a primary set of signals in the wideband communication, and the third antenna to receive a diversity signal in the wideband communication;
when the ganged antenna circuit is operated in the second mode, the switch circuit is configured to enable the first antenna to be used for transceiving narrowband signals in the narrowband communication, the second antenna to be used for transceiving main set signals in the broadband communication, and the first antenna to be used for receiving diversity signals in the broadband communication;
when the ganged antenna circuit is operated in the third mode, the switch circuit is configured to enable the first antenna to be used for transceiving narrowband signals in the narrowband communication, the first antenna is also used for transceiving main set signals in the broadband communication, and the second antenna is used for receiving diversity signals in the broadband communication.
4. The ganged antenna circuit according to claim 3, wherein when the first antenna is operating abnormally, the diverter switch circuit is configured to operate the ganged antenna circuit in the first mode.
5. The ganged antenna circuit of claim 1, wherein the toggle switch circuit comprises:
the first switch comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end, wherein the first connecting end of the first switch is used for connecting the second type filter circuit, the second connecting end of the first switch is used for connecting the second antenna, and the fourth connecting end of the first switch is used for connecting the broadband communication circuit;
the second switch comprises a first connecting end, a second connecting end and a third connecting end, wherein the first connecting end of the second switch is used for connecting the third connecting end of the first switch, the second connecting end of the second switch is used for connecting the third antenna, and the third connecting end of the second switch is used for connecting the broadband communication circuit;
when the first antenna performs the transmission or reception of the main set signal of the broadband communication, the first connection end of the first switch is communicated with the fourth connection end of the first switch, so that the broadband communication circuit is communicated to the first antenna through the first switch; when the second antenna performs transmission or reception of a main set signal of the broadband communication, the second connection terminal of the first switch communicates with the fourth connection terminal of the first switch, so that the broadband communication circuit communicates with the second antenna through the first switch;
when the first antenna performs reception of a diversity signal of the broadband communication, the first connection terminal of the first switch communicates with the third connection terminal of the first switch, and the first connection terminal of the second switch communicates with the third connection terminal of the second switch, so that the broadband communication circuit communicates with the first antenna through the first switch and the second switch; when the second antenna performs reception of the diversity signal of the broadband communication, the second connection terminal of the first switch is communicated with the third connection terminal of the first switch, and the first connection terminal of the second switch is communicated with the third connection terminal of the second switch, so that the broadband communication circuit is communicated to the second antenna through the first switch and the second switch; when the third antenna performs reception of a diversity signal of the broadband communication, the second connection terminal of the second switch communicates with the third connection terminal of the second switch, so that the broadband communication circuit communicates to the third antenna through the second switch.
6. The ganged antenna circuit of claim 5, wherein the toggle circuit further comprises:
a coupling filter module, wherein the fourth connection terminal of the first switch is connected to the broadband communication circuit through the coupling filter module.
7. The ganged antenna circuit of claim 6, wherein the toggle switch circuit further comprises:
the third switch comprises a first connection end, a second connection end and a third connection end, wherein the first connection end of the third switch is connected to the coupling filtering module, and the third connection end of the third switch is connected to the broadband communication circuit;
the second antenna change-over switch comprises at least one sending and receiving end, an antenna end and a control power feedback end, wherein the second connecting end of the first switch is connected with one sending and receiving end of the second antenna change-over switch, the second antenna is connected with the antenna end of the second antenna change-over switch, and the second connecting end of the third switch is connected with the control power feedback end of the second antenna change-over switch;
when the first antenna transmits the main set signal of the broadband communication, the first connection end of the third switch is communicated with the third connection end of the third switch, so that the broadband communication circuit is communicated to the coupling filter module through the third switch;
when the second antenna performs the transmission of the main set signal of the wideband communication, the second connection terminal of the third switch communicates with the third connection terminal of the third switch, so that the wideband communication circuit communicates with the control power feedback terminal of the second antenna changeover switch through the third switch.
8. The ganged antenna circuit of claim 7, wherein the coupling filtering module comprises:
the coupler comprises a first connecting end, a second connecting end and a third connecting end, wherein the first connecting end of the coupler is connected with the fourth connecting end of the first switch, and the second connecting end of the coupler is connected with the first connecting end of the third switch;
and the duplex filter comprises a first connecting end, a second connecting end and a third connecting end, wherein the first connecting end of the duplex filter is connected to the third connecting end of the coupler, and the second connecting end and the third connecting end of the duplex filter are respectively connected to the broadband communication circuit.
9. The ganged antenna circuit of claim 5, wherein the toggle switch circuit further comprises:
a third antenna change-over switch, including at least one transmitting/receiving end and an antenna end, wherein one transmitting/receiving end of the third antenna change-over switch is connected to the second connection end of the second switch, and the antenna end of the third antenna change-over switch is connected to the third antenna;
and the filtering module is connected between the third connecting end of the second switch and the broadband communication circuit.
10. The ganged antenna circuit of claim 1, further comprising:
and the microstrip coupling circuit is coupled with the first antenna and is connected to the narrow-band communication circuit.
11. A terminal comprising a ganged antenna circuit according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210875647.3A CN115441881B (en) | 2022-07-21 | 2022-07-21 | Linkage antenna circuit and terminal |
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| CN202210875647.3A CN115441881B (en) | 2022-07-21 | 2022-07-21 | Linkage antenna circuit and terminal |
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| CN115441881B CN115441881B (en) | 2024-01-16 |
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