CN109560833B - Downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment - Google Patents
Downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment Download PDFInfo
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- CN109560833B CN109560833B CN201910081434.1A CN201910081434A CN109560833B CN 109560833 B CN109560833 B CN 109560833B CN 201910081434 A CN201910081434 A CN 201910081434A CN 109560833 B CN109560833 B CN 109560833B
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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
- H04B1/401—Circuits for selecting or indicating operating mode
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
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Abstract
The invention discloses a downlink carrier aggregation radio frequency circuit, an antenna device and electronic equipment, wherein the downlink carrier aggregation radio frequency circuit is connected with an antenna and comprises a switch module, a first filtering phase-shifting module and a second filtering phase-shifting module, wherein the first filtering phase-shifting module and the second filtering phase-shifting module are connected with the switch module; when the wireless communication device works in a downlink carrier aggregation mode, the switch module controls the conduction of the two downlink signal ends and controls the conduction of the uplink signal end connected with the first filtering phase-shifting module or the second filtering phase-shifting module, so that the transmission of the first frequency band uplink signal or the second frequency uplink signal and the carrier aggregation reception of the first frequency band downlink signal and the second frequency band downlink signal are realized. The downlink carrier aggregation of the two frequency band signals can be realized without adopting a quadruplex, so that the production cost can be greatly reduced.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a downlink carrier aggregation radio frequency circuit, an antenna apparatus, and an electronic device.
Background
With the development of communication technology, carrier aggregation is increasingly applied in the current LTE, 5G and future possible communication technologies in order to fully apply spectrum resources, and the main application of LTE carrier aggregation in the current mobile portable device is DLCA (downlink carrier aggregation). In the industry, a frequency Band below 1GHz (such as Band 5/8/12/B28) is generally called as a low frequency, a frequency Band between 1GHz and 2.2GHz (such as B1/2/3/4/34/39) is called as an intermediate frequency, and a frequency Band above 2.3GHz (such as B30/7/38/40) is called as a high frequency. For the DLCA of the intermediate frequency and the intermediate frequency, the low frequency and the high frequency, or the intermediate frequency and the high frequency, the design is relatively easy to complete, but for the DLCA of the intermediate frequency and the intermediate frequency, a device of a quadplexer (such as a quadplexer of 2A-4A) must be generally adopted to complete the function of the DLCA, but the cost of the quadplexer is high, which results in high manufacturing cost of electronic equipment.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide a downlink carrier aggregation rf circuit, an antenna device and an electronic device, which can implement downlink carrier aggregation of two frequency band signals by controlling a switch module and selecting a path between filtering phase-shifting modules without using a quadplexer, and can greatly reduce production cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a downlink carrier aggregation radio frequency circuit is connected with an antenna and comprises a switch module, a first filtering phase-shifting module and a second filtering phase-shifting module, wherein the first filtering phase-shifting module and the second filtering phase-shifting module are connected with the switch module; when the wireless communication system works in a non-carrier aggregation mode, the switch module controls an uplink signal end and a downlink signal end which are connected with the first filtering phase-shifting module or the second filtering phase-shifting module to be conducted, and receives and transmits a first frequency band uplink signal and a first frequency band downlink signal or receives and transmits a second frequency band uplink signal and a second frequency band downlink signal; when the wireless communication device works in a downlink carrier aggregation mode, the switch module controls the conduction of the two downlink signal ends and controls the conduction of the uplink signal end connected with the first filtering phase-shifting module or the second filtering phase-shifting module, so that the transmission of the first frequency band uplink signal or the second frequency uplink signal and the carrier aggregation reception of the first frequency band downlink signal and the second frequency band downlink signal are realized.
In the downlink carrier aggregation radio frequency circuit, the first filtering phase-shifting module comprises a first filtering phase-shifting unit and a second filtering phase-shifting unit, and the first filtering phase-shifting unit is connected with an uplink signal end of the switch module and is used for performing filtering phase-shifting processing on an uplink signal of a first frequency band; and the second filtering phase-shifting unit is connected with the downlink signal end of the switch module and is used for filtering and phase-shifting the received downlink signal of the first frequency band.
In the downlink carrier aggregation radio frequency circuit, the second filtering phase-shifting module comprises a third filtering phase-shifting unit and a fourth filtering phase-shifting unit, and the third filtering phase-shifting unit is connected with the uplink signal end of the switch module and is used for performing filtering phase-shifting processing on the transmitted second frequency band uplink signal; and the second filtering phase-shifting unit is connected with the downlink signal end of the switch module and is used for filtering and phase-shifting the received downlink signal of the second frequency band.
In the downlink carrier aggregation radio frequency circuit, the switch module comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch and a sixth switch; one end of the first switch is connected with the first filtering phase-shifting unit, one end of the third switch and one end of the sixth switch, and the other end of the first switch is connected with the antenna; one end of the second switch is connected with the third filtering phase-shifting unit, one end of the fourth switch and one end of the fifth switch, and the other end of the second switch is connected with the antenna; the other end of the third switch and the other end of the fourth switch are both connected with a second filtering phase-shifting unit; and the other end of the fifth switch and the other end of the sixth switch are both connected with a fourth filtering phase-shifting unit.
In the downlink carrier aggregation radio frequency circuit, when the first switch and the third switch are closed, the first filtering phase-shifting unit and the second filtering phase-shifting unit respectively send the uplink signal of the first frequency band and receive the downlink signal of the first frequency band; and when the second switch and the sixth switch are closed, the third filtering phase-shifting unit and the fourth filtering phase-shifting unit respectively send the second frequency band uplink signal and receive the second frequency band downlink signal.
In the downlink carrier aggregation radio frequency circuit, when a first switch, a third switch and a sixth switch are closed, a first frequency band uplink signal is sent through a first filtering phase-shifting unit, and diversity reception of a first frequency band downlink signal and a second frequency band downlink signal during downlink carrier aggregation is realized through a second filtering phase-shifting unit and a fourth filtering phase-shifting unit; when the second switch, the fourth switch and the fifth switch are closed, the third filtering phase-shifting unit is used for sending the second frequency band uplink signal, and the second filtering phase-shifting unit and the fourth filtering phase-shifting unit are used for realizing the diversity reception of the first frequency band downlink signal and the second frequency band downlink signal during the downlink carrier aggregation.
In the downlink carrier aggregation radio frequency circuit, the first filtering phase-shifting unit comprises a first surface acoustic wave filter and a first phase shifter, and the second filtering phase-shifting unit comprises a second surface acoustic wave filter and a second phase shifter; the first surface acoustic wave filter is connected with one end of the first switch through the first phase shifter; and the second surface acoustic wave filter is connected with the other end of the third switch and the other end of the fourth switch through the second phase shifter.
In the downlink carrier aggregation radio frequency circuit, the third filtering phase-shifting unit comprises a third surface acoustic wave filter and a third phase shifter, and the fourth filtering phase-shifting unit comprises a fourth surface acoustic wave filter and a fourth phase shifter; the third surface acoustic wave filter is connected with one end of the second switch through the third phase shifter; and the fourth surface acoustic wave filter is connected with the other end of the fifth switch and the other end of the sixth switch through the fourth phase shifter.
An antenna device comprises the downlink carrier aggregation radio frequency circuit.
An electronic device comprises a shell, wherein a PCB is arranged in the shell, and the PCB is provided with the downlink carrier aggregation radio frequency circuit.
Compared with the prior art, in the downlink carrier aggregation radio frequency circuit, the antenna device and the electronic equipment, the downlink carrier aggregation radio frequency circuit is connected with an antenna and comprises a switch module, a first filtering phase-shifting module and a second filtering phase-shifting module, wherein the first filtering phase-shifting module and the second filtering phase-shifting module are connected with the switch module; when the wireless communication system works in a non-carrier aggregation mode, the switch module controls an uplink signal end and a downlink signal end which are connected with the first filtering phase-shifting module or the second filtering phase-shifting module to be conducted, and receives and transmits a first frequency band uplink signal and a first frequency band downlink signal or receives and transmits a second frequency band uplink signal and a second frequency band downlink signal; when the wireless communication device works in a downlink carrier aggregation mode, the switch module controls the conduction of the two downlink signal ends and controls the conduction of the uplink signal end connected with the first filtering phase-shifting module or the second filtering phase-shifting module, so that the transmission of the first frequency band uplink signal or the second frequency uplink signal and the carrier aggregation reception of the first frequency band downlink signal and the second frequency band downlink signal are realized. The downlink carrier aggregation of two frequency band signals can be realized by controlling the path selection between the switch module and the filtering phase-shifting module without adopting a quadruplex, and the production cost can be greatly reduced.
Drawings
Fig. 1 is a block diagram of a downlink carrier aggregation rf circuit according to the present invention.
Fig. 2 is a schematic circuit diagram of a downlink carrier aggregation rf circuit according to the present invention.
Detailed Description
In view of the disadvantages of high cost and the like caused by the fact that a quadruplex is needed for carrier aggregation in the prior art, the invention aims to provide a downlink carrier aggregation radio frequency circuit, an antenna device and electronic equipment.
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the downlink carrier aggregation rf circuit provided by the present invention is connected to an antenna 10, and includes a switch module 20, and a first filtering phase-shifting module 31 and a second filtering phase-shifting module 32 connected to the switch module 20, wherein a first end of the switch module 20 includes two uplink signal ends P1 and P3, and two downlink signal ends P2 and P4, the first filtering phase-shifting module 31 and the second filtering phase-shifting module 32 are respectively connected to the switch module 20 through an uplink signal end and a downlink signal end, another end of the switch module 20 is connected to the antenna 10, the first filtering phase-shifting module 31 allows an uplink signal in a first frequency band and a downlink signal in the first frequency band to pass through, the second filtering phase-shifting module 32 allows an uplink signal in a second frequency band and a downlink signal in the second frequency band to pass through, and when the switch module 20 operates in a non-carrier aggregation mode, the switch module 20 controls the uplink signal connected to the first phase-shifting module 31 or the second filtering phase-shifting module 32 The signal end is connected with the downlink signal end to receive and transmit the uplink signal of the first frequency band and the downlink signal of the first frequency band, or to receive and transmit the uplink signal of the second frequency band and the downlink signal of the second frequency band, that is, when carrier aggregation is not required to be achieved, the P1 and the P2 or the P3 and the P4 are controlled to be connected, so that the current access circuit of the first filtering phase-shifting module 31 or the second filtering phase-shifting module 32 starts to work, for example, when the ports P1 and P2 are connected, the uplink signal of the first frequency band passes through the first filtering phase-shifting module 31 and then reaches the antenna 10 through the switch module 20, and the downlink signal of the first frequency band is received by the antenna 10 and then is output to the first filtering phase-shifting module 31 and then to the radio frequency transceiver, so that the signal receiving and transmitting of the single frequency band are achieved, thereby achieving the communication of the frequency band.
When the wireless communication device works in the downlink carrier aggregation mode, the switch module 20 controls both downlink signal ends to be conducted, and controls the uplink signal ends connected with the first filtering phase-shifting module 31 or the second filtering phase-shifting module 32 to be conducted, so that the transmission of the first frequency band uplink signal or the second frequency uplink signal and the carrier aggregation reception of the first frequency band downlink signal and the second frequency band downlink signal are realized. Namely, when the down carrier aggregation mode is operated, the two down signal terminals P2 and P4 are controlled to be conducted, and controls the conduction of the uplink signal end connected with the first filtering phase-shifting module 31 or the second filtering phase-shifting module 32 according to the frequency band of the current main carrier, for example, if the current main carrier frequency band is the first frequency band, the P1 is controlled to be conducted, if the current main carrier frequency band is the second frequency band, the P3 is controlled to be conducted, taking the main carrier frequency band as the first frequency band as an example, at this time, the ports P1, P2 and P4 are turned on, the uplink signal of the first frequency band passes through the first filtering phase-shifting module 31 and then reaches the antenna 10 through the switch module 20, the downlink signal of the first frequency band and the downlink signal of the second frequency band after carrier aggregation are received by the antenna 10 and then are respectively output to the first filtering phase-shifting module 31 and the second filtering phase-shifting module 32 through the P2 end and the P4 end of the switch module 20, so that diversity reception of the downlink signal of the first frequency band and the downlink signal of the second frequency band during downlink carrier aggregation is realized. The invention can realize the downlink carrier aggregation of two frequency band signals without adopting a quadruplex device and by controlling the path selection between the switch module 20 and the filtering phase-shifting module, and can also not influence the communication of a single frequency band, thereby greatly reducing the production cost.
Specifically, referring to fig. 2, the first filtering phase-shifting module 31 includes a first filtering phase-shifting unit 311 and a second filtering phase-shifting unit 312, and the second filtering phase-shifting module 32 includes a third filtering phase-shifting unit 321 and a fourth filtering phase-shifting unit 322, where the first filtering phase-shifting unit 311 is connected to the uplink signal end of the switch module 20, and is configured to perform filtering phase-shifting processing on the transmitted uplink signal of the first frequency band; the second filtering phase-shifting unit 312 is connected to the downlink signal end of the switch module 20, and is configured to perform filtering phase-shifting processing on the received downlink signal of the first frequency band; the third filtering phase-shifting unit 321 is connected to the uplink signal end of the switch module 20, and is configured to perform filtering phase-shifting processing on the transmitted uplink signal of the second frequency band; the second filtering phase shift unit 312 is connected to the downlink signal end of the switch module 20, and is configured to perform filtering phase shift processing on the received downlink signal of the second frequency band. That is, in the downlink carrier aggregation radio frequency circuit provided by the present invention, four filtering phase shift units are respectively used to perform filtering phase shift processing on uplink signals and downlink signals of two different frequency bands, so that each filtering phase shift unit can only pass through signals of a preset frequency, for example, the first filtering phase shift unit 311 can pass through the uplink signals of the first frequency band after filtering and phase shift processing, but cut off the radio frequency signals except the uplink signals of the first frequency band, and the other three filtering phase shift units are similar, so that each filtering phase shift unit has a specific frequency channel, thereby improving the accuracy of carrier aggregation signal transmission.
Further, the switch module 20 includes a first switch S1, a second switch S2, a third switch S3, a fourth switch S4, a fifth switch S5, and a sixth switch S6; one end of the first switch S1 is connected to the first filtering phase shift unit 311, one end of the third switch S3 and one end of the sixth switch S6, and the other end of the first switch S1 is connected to the antenna 10; one end of the second switch S2 is connected to the third filtering phase-shifting unit 321, one end of the fourth switch S4 and one end of the fifth switch S5, and the other end of the second switch S2 is connected to the antenna 10; the other end of the third switch S3 and the other end of the fourth switch S4 are both connected to the second filtering phase-shifting unit 312; the other end of the fifth switch S5 and the other end of the sixth switch S6 are both connected to the fourth filtering phase-shifting unit 322.
Specifically, the first filtering phase-shift unit 311 includes a first surface acoustic wave filter SAW1 and a first phase shifter a1, and the second filtering phase-shift unit 312 includes a second surface acoustic wave filter SAW2 and a second phase shifter a 2; the first surface acoustic wave filter SAW1 is connected to one end of a first switch S1 through the first phase shifter a 1; the second surface acoustic wave filter SAW2 is connected to the other end of the third switch S3 and the other end of the fourth switch S4 through the second phase shifter a 2; the third filtering phase-shifting unit 321 includes a third surface acoustic wave filter SAW3 and a third phase shifter A3, and the fourth filtering phase-shifting unit 322 includes a fourth surface acoustic wave filter SAW4 and a fourth phase shifter a 4; the third surface acoustic wave filter SAW3 is connected to one end of a second switch S2 through the third phase shifter A3; the fourth surface acoustic wave filter SAW4 is connected to the other end of the fifth switch S5 and the other end of the sixth switch S6 through the fourth phase shifter a 4.
In a specific implementation, when the wireless communication device operates in a non-carrier aggregation mode, if the first switch S1 and the third switch S3 are controlled to be closed, the first filtering phase-shifting unit 311 and the second filtering phase-shifting unit 312 respectively transmit a first frequency band uplink signal and receive a first frequency band downlink signal; if the second switch S2 and the sixth switch S6 are controlled to be closed, the third filtering phase-shifting unit 321 and the fourth filtering phase-shifting unit 322 respectively send the uplink signal of the second frequency band and receive the downlink signal of the second frequency band, so as to implement communication of a single frequency band.
When working in the downlink carrier aggregation mode, if the first switch S1, the third switch S3, and the sixth switch S6 are controlled to be closed, the first filtering phase-shifting unit 311 sends the first frequency band uplink signal, and the second filtering phase-shifting unit 312 and the fourth filtering phase-shifting unit 322 implement diversity reception of the first frequency band downlink signal and the second frequency band downlink signal during downlink carrier aggregation; if the real number of the second switch S2, the fourth switch S4, and the fifth switch S5 is controlled to be closed, the third filtering phase-shifting unit 321 sends the uplink signal in the second frequency band, and the second filtering phase-shifting unit 312 and the fourth filtering phase-shifting unit 322 implement diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band during downlink carrier aggregation, thereby implementing downlink carrier aggregation with two different main carrier frequency bands.
Specifically, taking a B2 frequency band and a B4 frequency band as examples, a first surface acoustic wave filter SAW1 and a second surface acoustic wave filter SAW2 respectively filter an uplink signal of a first frequency band and a downlink signal of the first frequency band, wherein a first phase shifter a1 enables the uplink signal of the first frequency band, that is, a B2 TX signal (frequencies of 1850 to 1910 MHz) to pass through by setting a first preset value, and cuts off signals except for B2 TX, a second phase shifter a2 enables the downlink signal of the first frequency band, that is, a B2 RX signal (frequencies of 1930 to 1990) to pass through by setting a second preset value, and cuts off signals except for B2 RX, and a third surface acoustic wave filter SAW3, a third phase shifter A3, a fourth surface acoustic wave filter SAW4 and a fourth phase shifter a4 corresponding to the B4 frequency band are similar.
If the working of the B2 frequency band is only needed, when the 2A-4A downlink carrier aggregation is not needed, the first switch S1 and the third switch S3 are controlled to be closed, at the moment, the first frequency band uplink signal B2 TX signal passes through the first surface acoustic wave filter SAW1 and the first phase shifter A1, and because the second phase shifter A2 cuts off signals except the first frequency band downlink signal B2 RX, the first frequency band uplink signal B2 TX signal cannot pass through the third switch S3 and only reaches the antenna 10 through the first switch S1; the first band downlink signal B2 RX is received by the antenna 10, and passes through the first switch S1, because the first phase shifter a1 cuts off signals other than the first band uplink signal B2 TX, the first band downlink signal B2 RX does not pass through the first phase shifter a1, but passes through the third switch S3, then passes through the second phase shifter a2 and the second surface acoustic wave filter 2, and then enters the wireless transceiver, if only the B4 band is needed to work, the second switch S2 and the sixth switch S6 are controlled to be closed, and the signal process is similar to the B2 band.
If 2A-4A downlink carrier aggregation needs to be implemented, taking a B2 frequency band as PCC (primary carrier, i.e., primary carrier, including TX signal and RX signal), and a B4 frequency band as SCC (secondary carrier, i.e., secondary carrier, including only RX signal), as an example, at this time, the first switch S1, the third switch S3 and the sixth switch S6 are controlled to be closed, so that the first frequency band uplink signal B2 TX signal passes through the first surface acoustic wave filter SAW1 and the first phase shifter a1, because the second phase shifter a2 blocks signals other than the first frequency band downlink signal B2 RX, and the fourth phase shifter a4 blocks signals other than the second frequency band downlink signal B4 RX, the first frequency band uplink signal B2 TX signal does not pass through the third switch S3 and the sixth switch S6, and only passes through the first switch S1 to reach the antenna 10; the antenna 10 receives a first band downlink signal B2 RX and a second band downlink signal B4 RX combined by carriers, wherein the first band downlink signal passes through a first switch S1, because the first phase shifter a1 cuts off signals except the first band uplink signal B2 TX, and the fourth phase shifter a4 cuts off signals except the second band downlink signal B4 RX, the first band downlink signal B2 RX does not pass through the first phase shifter a1 and a sixth switch S6, but passes through a third switch S3, then passes through a second phase shifter a2 and a surface wave filter SAW2, and then enters the wireless transceiver; the second band downlink signal B4 RX signal passes through the first switch S1, because the first phase shifter a1 cuts off signals outside the first band uplink signal B2 TX, and the second phase shifter a2 cuts off signals outside the first band downlink signal B2 RX, the second band downlink signal B4 RX signal does not pass through the first phase shifter a1 and the third switch S3, but passes through the sixth phase shifter a4 and the fourth surface acoustic wave filter SAW4 and then enters the wireless transceiver, so as to realize the downlink carrier aggregation function of 2A-4A with the B2 band as the main carrier and the B4 band as the auxiliary carrier, and if the downlink carrier aggregation function of 2A-4A with the B4 band as the main carrier and the B2 band as the auxiliary carrier is required, the second switch S2, the fourth switch S4 and the fifth switch S5 are only required to be controlled to be closed. The transmission process of the carrier aggregation signals of other frequency bands such as the B1 frequency band and the B3 frequency band is similar, and the frequency range of the signals allowed to pass through by each filtering phase-shifting unit can be adjusted.
The invention realizes the downlink carrier aggregation of different frequency bands by adopting the combination form of the surface acoustic wave filter, the phase shifter and the plurality of switches, compared with the prior mode of realizing the carrier aggregation by the quadruplex, because the insertion loss of the single surface acoustic wave filter and the phase shifter is less than that of the quadruplex, the loss is improved, the problems of equipment power consumption, equipment heating, battery life and the like can be improved, secondly, the cost of the surface acoustic wave filter and the phase shifter is far less than that of the quadruplex, the manufacturing cost of the device is improved, the competitive advantage is improved, if the device needs to support both 1A-3A and 2A-4A downlink carrier aggregation, and then correspondingly adding two groups of surface acoustic wave filters, phase shifters and switches, wherein the cost is far less than that of adding a quadruplex, and the expansibility of the downlink carrier aggregation radio frequency circuit is improved.
Based on the downlink carrier aggregation radio frequency circuit, the present invention also provides an antenna apparatus, which includes the downlink carrier aggregation radio frequency circuit as described above, and since the downlink carrier aggregation radio frequency circuit has been described in detail above, detailed description thereof is omitted here.
Based on the downlink carrier aggregation radio frequency circuit, the invention also correspondingly provides an electronic device, which comprises a shell, wherein a PCB is arranged in the shell, the downlink carrier aggregation radio frequency circuit is arranged on the PCB, and the downlink carrier aggregation radio frequency circuit is described in detail above and is not described in detail here.
In summary, in the downlink carrier aggregation radio frequency circuit, the antenna device and the electronic device provided by the present invention, the downlink carrier aggregation radio frequency circuit is connected to an antenna, and includes a switch module, and a first filtering phase-shifting module and a second filtering phase-shifting module connected to the switch module, where one end of the switch module includes two uplink signal ends and two downlink signal ends, and the other end of the switch module is connected to the antenna; when the wireless communication system works in a non-carrier aggregation mode, the switch module controls an uplink signal end and a downlink signal end which are connected with the first filtering phase-shifting module or the second filtering phase-shifting module to be conducted, and receives and transmits a first frequency band uplink signal and a first frequency band downlink signal or receives and transmits a second frequency band uplink signal and a second frequency band downlink signal; when the wireless communication device works in a downlink carrier aggregation mode, the switch module controls the conduction of the two downlink signal ends and controls the conduction of the uplink signal end connected with the first filtering phase-shifting module or the second filtering phase-shifting module, so that the transmission of the first frequency band uplink signal or the second frequency uplink signal and the carrier aggregation reception of the first frequency band downlink signal and the second frequency band downlink signal are realized. The downlink carrier aggregation of two frequency band signals can be realized by controlling the path selection between the switch module and the filtering phase-shifting module without adopting a quadruplex, and the production cost can be greatly reduced.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (4)
1. A downlink carrier aggregation radio frequency circuit is connected with an antenna and is characterized by comprising a switch module, a first filtering phase-shifting module and a second filtering phase-shifting module, wherein the first filtering phase-shifting module and the second filtering phase-shifting module are connected with the switch module; when the wireless communication device works in a non-carrier aggregation mode, the switch module controls an uplink signal end P1 and a downlink signal end P2 which are connected with the first filtering phase-shifting module to be conducted, and receives and transmits a first frequency band uplink signal and a first frequency band downlink signal; the switch module controls an uplink signal end P3 and a downlink signal end P4 connected with the second filtering phase-shifting module to be conducted, and receives and transmits a second frequency band uplink signal and a second frequency band downlink signal; when the device works in a downlink carrier aggregation mode, the switch module controls the conduction of two downlink signal ends, and controls the conduction of an uplink signal end P1 connected with the first filtering phase-shifting module or the conduction of an uplink signal end P3 connected with the second filtering phase-shifting module, so that the transmission of a first frequency band uplink signal or a second frequency uplink signal and the carrier aggregation reception of the first frequency band downlink signal and the second frequency band downlink signal are realized;
the switch module comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch and a sixth switch; one end of the first switch is connected with the first filtering phase-shifting unit, one end of the third switch and one end of the sixth switch, and the other end of the first switch is connected with the antenna; one end of the second switch is connected with the third filtering phase-shifting unit, one end of the fourth switch and one end of the fifth switch, and the other end of the second switch is connected with the antenna; the other end of the third switch and the other end of the fourth switch are both connected with a second filtering phase-shifting unit; the other end of the fifth switch and the other end of the sixth switch are both connected with a fourth filtering phase-shifting unit;
the first filtering phase-shifting module comprises a first filtering phase-shifting unit and a second filtering phase-shifting unit, and the first filtering phase-shifting unit is connected with an uplink signal end P1 of the switch module and is used for performing filtering phase-shifting processing on an emitted uplink signal of a first frequency band; the second filtering phase-shifting unit is connected with a downlink signal end P2 of the switch module and is used for performing filtering phase-shifting processing on the received downlink signal of the first frequency band;
the second filtering phase-shifting module comprises a third filtering phase-shifting unit and a fourth filtering phase-shifting unit, and the third filtering phase-shifting unit is connected with an uplink signal end P3 of the switch module and is used for performing filtering phase-shifting processing on the transmitted uplink signal of the second frequency band; the fourth filtering phase-shifting unit is connected with a downlink signal end P4 of the switch module and is used for performing filtering phase-shifting processing on the received downlink signal of the second frequency band;
the first filtering phase-shifting unit comprises a first surface acoustic wave filter and a first phase shifter, and the second filtering phase-shifting unit comprises a second surface acoustic wave filter and a second phase shifter; the first surface acoustic wave filter is connected with one end of the first switch through the first phase shifter; the second surface acoustic wave filter is connected with the other end of the third switch and the other end of the fourth switch through the second phase shifter;
the third filtering phase-shifting unit comprises a third surface acoustic wave filter and a third phase shifter, and the fourth filtering phase-shifting unit comprises a fourth surface acoustic wave filter and a fourth phase shifter; the third surface acoustic wave filter is connected with one end of the second switch through the third phase shifter; the fourth surface acoustic wave filter is connected with the other end of the fifth switch and the other end of the sixth switch through the fourth phase shifter;
the first phase shifter enables the first frequency band uplink signal to pass through by setting a first preset value and stops signals except the first frequency band uplink signal, and the second phase shifter enables the first frequency band downlink signal to pass through by setting a second preset value and stops signals except the first frequency band downlink signal; the third phase shifter enables the second frequency band uplink signal to pass through by setting a third preset value and stops signals except the second frequency band uplink signal, and the fourth phase shifter enables the second frequency band downlink signal to pass through by setting a fourth preset value and stops signals except the second frequency band downlink signal;
when the first switch, the third switch and the sixth switch are closed, the first filtering phase-shifting unit is used for sending the uplink signal of the first frequency band, and the second filtering phase-shifting unit and the fourth filtering phase-shifting unit are used for realizing the diversity reception of the downlink signal of the first frequency band and the downlink signal of the second frequency band during the downlink carrier aggregation; when the second switch, the fourth switch and the fifth switch are closed, the third filtering phase-shifting unit is used for sending the second frequency band uplink signal, and the second filtering phase-shifting unit and the fourth filtering phase-shifting unit are used for realizing the diversity reception of the first frequency band downlink signal and the second frequency band downlink signal during the downlink carrier aggregation;
and the downlink carrier aggregation of the two frequency band signals is realized by controlling the path selection between the switch module and the filtering phase-shifting module.
2. The downlink carrier aggregation rf circuit of claim 1, wherein when the first switch and the third switch are closed, the first filtering phase shift unit and the second filtering phase shift unit respectively transmit the uplink signal in the first frequency band and receive the downlink signal in the first frequency band; and when the second switch and the sixth switch are closed, the third filtering phase-shifting unit and the fourth filtering phase-shifting unit respectively send the second frequency band uplink signal and receive the second frequency band downlink signal.
3. An antenna device, characterized by comprising the downlink carrier aggregation radio frequency circuit according to any one of claims 1 to 2.
4. An electronic device comprising a housing, wherein a PCB is disposed in the housing, wherein the PCB is disposed with the downlink carrier aggregation rf circuit according to any one of claims 1-2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910081434.1A CN109560833B (en) | 2019-01-28 | 2019-01-28 | Downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment |
| PCT/CN2019/120970 WO2020155817A1 (en) | 2019-01-28 | 2019-11-26 | Downlink carrier aggregation radio frequency circuit, antenna device, and electronic apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910081434.1A CN109560833B (en) | 2019-01-28 | 2019-01-28 | Downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment |
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| CN109560833A CN109560833A (en) | 2019-04-02 |
| CN109560833B true CN109560833B (en) | 2022-01-11 |
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| CN201910081434.1A Active CN109560833B (en) | 2019-01-28 | 2019-01-28 | Downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment |
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| CN109560833B (en) * | 2019-01-28 | 2022-01-11 | 惠州Tcl移动通信有限公司 | Downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment |
| DE102019208987A1 (en) * | 2019-06-19 | 2020-12-24 | Molex Cvs Dabendorf Gmbh | Circuit arrangement for the transmission of radio signals and method for operating a circuit arrangement |
| CN110808751A (en) * | 2019-11-08 | 2020-02-18 | 昆山立讯射频科技有限公司 | Wireless communication receiving system |
| CN111030716B (en) * | 2019-12-30 | 2021-09-10 | 深圳市大富科技股份有限公司 | 5G mobile communication system and radio frequency coupling circuit thereof |
| CN112152690B (en) * | 2020-09-18 | 2024-02-09 | Oppo广东移动通信有限公司 | Diversity receiving apparatus, device, method, and computer-readable storage medium |
| CN113746495A (en) * | 2021-08-04 | 2021-12-03 | Tcl通讯（宁波）有限公司 | Radio frequency front-end circuit and electronic equipment |
| CN219577051U (en) * | 2022-12-27 | 2023-08-22 | 荣耀终端有限公司 | Radio frequency front-end device, antenna module and electronic equipment |
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| WO2020155817A1 (en) | 2020-08-06 |
| CN109560833A (en) | 2019-04-02 |
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