CN215990786U - Radio frequency front-end module covering multiple frequency bands and wireless communication equipment - Google Patents
Radio frequency front-end module covering multiple frequency bands and wireless communication equipment Download PDFInfo
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- CN215990786U CN215990786U CN202122495247.3U CN202122495247U CN215990786U CN 215990786 U CN215990786 U CN 215990786U CN 202122495247 U CN202122495247 U CN 202122495247U CN 215990786 U CN215990786 U CN 215990786U
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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
- 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
Abstract
The embodiment of the utility model discloses a multi-band-covered radio frequency front-end module and wireless communication equipment, wherein the radio frequency front-end module comprises a radio frequency transceiver, a first power amplifier working in a first frequency band, a second power amplifier working in a second frequency band, a first low-noise amplifier, at least three band-pass filters, a first selection switch, a second selection switch, a third selection switch and a first antenna; the first to third selection switches can be used for selecting the transceiving channels of the first frequency band and the second frequency band, and the plurality of band-pass filters are arranged to further subdivide the transceiving channels of at least one of the first frequency band and the second frequency band into a plurality of independent channels, namely, the plurality of subdivided frequency bands are ensured to be equipped with exclusive filters, so that in-band characteristics are ensured, out-of-band interference is greatly inhibited, and transceiving performance is ensured.
Description
Technical Field
The utility model relates to the technical field of wireless communication, in particular to a radio frequency front-end module covering multiple frequency bands and wireless communication equipment.
Background
A conventional 5G NR (new air interface for fifth generation mobile communication technology) radio frequency front end architecture simultaneously covering N77 (3300-.
For the N77 transceiving link 11, the transmitting link is firstly the power amplifier 111 performing power amplification on the signal sent by the rf transceiver 10, then switching to the TX (transmit) state through the rf switch 112 for transceiving switching of the TDD (time division duplex) system, filtering out the out-of-passband signal through the N77 band pass filter 113, and finally transmitting the signal through the N77 antenna 114; the receiving chain in the N77 transceiving chain 11 is a reverse process of transmission, and firstly, a signal received by the N77 antenna 114 enters the N77 band pass filter 113 to filter out-of-band interference signals, then the rf switch 112 switches to an RX (receiving) state, enters the low noise amplifier 115 to perform low noise power amplification, and then enters the rf transceiver 110 to perform subsequent processing. The N79 transceiving link 12 is consistent with the N77 architecture, which is simply a difference in operating frequency.
However, the above architecture has the following disadvantages:
taking the N77 link as an example, the frequency range of N77 is 3300-. Since the N77 wide-band filter is directly used in the link, when the system works in these sub-bands, the in-band characteristics and out-of-band rejection cannot be guaranteed to the maximum extent, thereby affecting the index of the system to a certain extent.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a multi-band-covered radio frequency front-end module and wireless communication equipment, which can ensure the in-band characteristic and out-of-band rejection under each working frequency to the greatest extent.
In order to solve the above technical problem, in a first aspect, the present invention provides a multi-band rf front-end module, which includes a radio frequency transceiver, a first power amplifier operating in a first frequency band, a second power amplifier operating in a second frequency band, a first low noise amplifier, at least three band pass filters, a first selection switch, a second selection switch, a third selection switch, and a first antenna;
wherein the working frequency band of at least one of the band-pass filters is within one of the first frequency band and the second frequency band, and the working frequency bands of at least two of the band-pass filters are within the other of the first frequency band and the second frequency band;
the first selection switch, the second selection switch and the third selection switch are provided with a plurality of selection ends, the first selection switch is provided with three selection ends, and the number of the selection ends of the second selection switch and the third selection switch is the same as that of the band-pass filters; the first power amplifier, the second power amplifier and first low noise amplifier respectively with the radio frequency transceiver is connected, first selector switch's three select terminal respectively with first power amplifier second power amplifier and first low noise amplifier connects, first selector switch's common port with second selector switch's common port is connected, a plurality of band pass filter's one end respectively with a plurality of select terminal one-to-one of second selector switch are connected, a plurality of band pass filter's the other end respectively with a plurality of select terminal one-to-one of third selector switch are connected, third selector switch's common port is connected first antenna.
The antenna also comprises a second antenna, and the third selection switch is provided with two common ends, wherein one common end is connected with the first antenna, and the other common end is connected with the second antenna.
The system also comprises a fourth selection switch, a two-port duplexer and a second low-noise amplifier;
the second antenna is connected with a common terminal of the third selection switch through the fourth selection switch, wherein two selection terminals of the fourth selection switch are respectively connected with the two-port duplexer and the other common terminal of the third selection switch, and the common terminal of the fourth selection switch is connected with the second antenna; and the two-port duplexer is connected with the radio frequency transceiver through the second low noise amplifier.
Wherein, the first frequency band is N77 (3300-.
The working frequency ranges of the band-pass filters are respectively the B42 (3400-.
In a second aspect, the present invention further provides a wireless communication device, including any one of the foregoing radio frequency front end modules covering multiple frequency bands.
Has the advantages that: the utility model relates to a multi-band-covered radio frequency front-end module, which comprises a radio frequency transceiver, a first power amplifier working in a first frequency band, a second power amplifier working in a second frequency band, a first low noise amplifier, at least three band-pass filters, a first selection switch, a second selection switch, a third selection switch and a first antenna, wherein the first power amplifier and the second low noise amplifier are connected in series; the working frequency band of at least one of the band-pass filters is in one of the first frequency band and the second frequency band, at least two of the working frequency bands of the band-pass filters are in the other of the first frequency band and the second frequency band, and the transceiving channels of the first frequency band and the second frequency band can be selected through the first to third selector switches, and the transceiving channels of at least one of the first frequency band and the second frequency band are further subdivided into a plurality of independent channels by arranging a plurality of band-pass filters, namely, the plurality of subdivided frequency bands are ensured to be equipped with exclusive filters, so that the out-of-band interference can be greatly inhibited while the in-band characteristic is ensured, and the transceiving performance is ensured.
Drawings
The technical solution and the advantages of the present invention will be apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an rf front end architecture in the prior art;
FIG. 2 is a schematic diagram of a RF front-end module covering multiple frequency bands according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another structure of a RF front-end module covering multiple frequency bands according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a radio frequency front-end module covering multiple frequency bands according to an embodiment of the present invention.
Detailed Description
Referring to the drawings, wherein like reference numbers refer to like elements, the principles of the present invention are illustrated as being implemented in a suitable computing environment. The following description is based on illustrated embodiments of the utility model and should not be taken as limiting the utility model with regard to other embodiments that are not detailed herein.
Referring to fig. 2, the multiband rf front-end module 200 of the present invention includes an rf transceiver 21, a first power amplifier 22 operating in a first frequency band, a second power amplifier 23 operating in a second frequency band, a first low noise amplifier 24, at least three band pass filters 25, a first selection switch 26, a second selection switch 27, a third selection switch 28, and a first antenna 29.
Wherein the first selection switch 26, the second selection switch 27 and the third selection switch 28 each have a plurality of selection terminals, the first selection switch 26 has three selection terminals, and the number of selection terminals of the second selection switch 27 and the third selection switch 28 is the same as the number of the band pass filters 25. The first selection switch 26, the second selection switch 27 and the third selection switch 28 each have one common terminal.
The first power amplifier 22, the second power amplifier 23, and the first low noise amplifier 24 are respectively connected to the radio frequency transceiver 21, and three selection terminals of the first selection switch 26 are respectively connected to the first power amplifier 22, the second power amplifier 23, and the first low noise amplifier 24. Specifically, the input terminals of the first power amplifier 22 and the second power amplifier 23 are respectively connected to the radio frequency transceiver 21, the output terminals of the first power amplifier 22 and the second power amplifier 23 are respectively connected to two selection terminals of the first selection switch 26, the input terminal of the first low noise amplifier 24 is connected to the remaining one selection terminal of the first selection switch 26, and the output terminal of the first low noise amplifier 24 is connected to the radio frequency transceiver 21. The common terminal of the first selection switch 26 is connected to the common terminal of the second selection switch 27, one end of each of the plurality of band-pass filters 25 is connected to one of the plurality of selection terminals of the second selection switch 27, the other end of each of the plurality of band-pass filters 25 is connected to one of the plurality of selection terminals of the third selection switch 28, and the common terminal of the third selection switch 28 is connected to the first antenna 29.
The first selection switch 26 is configured to switch between a transmission channel of a first frequency band and a transmission channel of a second frequency band, and is configured to switch a transceiving channel, that is, when the radio frequency front end module 200 is in a transmission state and an operating frequency band is the first frequency band, the first selection switch 26 selects to turn on the first power amplifier 22, when the radio frequency front end module 200 operates in the second frequency band, the first selection switch 26 selects to turn on the second power amplifier 23, and when the radio frequency front end module 200 is in a receiving state, the first selection switch 26 selects to turn on the first low noise amplifier 24. The second selection switch 27 and the third selection switch 28 are used to effect switching of the plurality of band pass filters 25.
Wherein the working frequency band of at least one of the band-pass filters 25 is in one of the first frequency band and the second frequency band, and the working frequency bands of at least two of the band-pass filters 25 are in the other of the first frequency band and the second frequency band. That is, in the embodiment of the present invention, at least one of the first frequency band and the second frequency band is subdivided, each frequency band is provided with a dedicated band pass filter 25, and when a signal of a certain frequency is output by the radio frequency transceiver 21, the second selection switch 27 and the third selection switch 28 select the band pass filter 25 of the corresponding frequency band to filter the signal, so that out-of-band interference can be greatly suppressed. Moreover, for the communication systems of the first frequency band and the second frequency band, the same antenna 29 and the same low noise amplifier 24 are shared, so that the idle of the antenna can be avoided, resources can be fully utilized, and the reduction of the chip area is facilitated.
The first frequency band may be an N77 (3300-. Wherein, the frequency range of the N77 band is 3300-. Therefore, the dedicated band-pass filters 25 are equipped for transmitting and receiving a plurality of subdivided frequency bands, thereby being beneficial to ensuring the maximization of the system performance under each frequency band.
Further, referring to fig. 3, in another embodiment of the rf front-end module 200 of the present invention, the rf front-end module 200 further includes a second antenna 31, and the third selection switch 28 has two common terminals, one of the common terminals is connected to the first antenna 29, and the other common terminal is connected to the second antenna 31. By arranging the double antennas, antenna MIMO (multiple input multiple output) is realized, so that the round sending and the round receiving of the antennas can be realized, and the diversity gain of the antennas is improved.
Referring to fig. 4, in another embodiment of the rf front-end module 200 of the present invention, the rf front-end module 200 further includes a fourth selection switch 32, a two-port duplexer 33, and a second low noise amplifier 34.
The second antenna via 31 is connected to a common terminal of the third selection switch 28 through the fourth selection switch 32, wherein two selection terminals of the fourth selection switch 32 are respectively connected to the two-port duplexer 33 and the other common terminal of the third selection switch 28, and a common terminal of the fourth selection switch 32 is connected to the second antenna 31; the two-port duplexer 33 is connected to the radio frequency transceiver 21 through the second low noise amplifier 34. The duplexer 33 and the second low noise amplifier 34 are arranged, and then the selection function of the fourth selection switch 32 is performed, so that a receiving path can be additionally added, the two-port duplexer 33 of N77 and N79 is adopted as a filter of the receiving path, and the filtering of signals is performed through the two-port duplexer 33, so that the receiving path can receive signals in the N77 frequency band and signals in the N79 frequency band, and thus, the full-band receiving function is realized.
The following describes the transceiving process of the rf front-end module of the present invention by taking the rf front-end module 200 shown in fig. 4 as an example.
In the transmitting state, the radio frequency transceiver 21 outputs a signal with a frequency (e.g. B48), and the frequency of B48 is within the range of the first frequency band, when the first selection switch 26 switches to the transmitting channel, i.e. selectively connects to the first power amplifier 22, so as to perform power amplification on the signal through the first power amplifier 22. The second selection switch 27 selects corresponding frequencies, switches on the band-pass filter 25 corresponding to the B48 frequency, that is, the band-pass filter 25 with the working frequency band of B48, and then selects and outputs the selected signals to the first antenna 29 or the second antenna 31 through the third selection switch 28 to transmit the signals.
In the receiving state, firstly, the first antenna 29 or the second antenna 31 converts the signal in the free space into an electric signal to be received, then the third selection switch 28 selects the corresponding frequency channel, the electric signal enters the band-pass filter 25 with the corresponding frequency, the filtered electric signal is output through the second selection switch 27, at this time, the first selection switch 26 is switched to the receiving channel, that is, the first selection switch 26 switches on the first low noise amplifier 24, so that the received signal passes through the broadband first low noise amplifier 24 which can cover N77+ N79 simultaneously, and the signal is subjected to low noise amplification and then is further processed by the incident frequency transceiver 21.
If the simultaneous reception of signals of two frequency bands N77+ N79 is to be realized, the signals may be received through the second antenna 31, then the fourth selection switch 32 is switched to the receiving channel where the two-port duplexer 33 is located, the received signals are filtered through the duplexer 33, and finally enter the second low noise amplifier 34 to perform low noise amplification on the signals and then send the signals to the radio frequency transceiver 21 for further processing.
The radio frequency front-end module provided by the embodiment of the utility model can realize the switching of the receiving and transmitting channels under a plurality of sub-divided frequency bands, and ensure the performance under each working frequency to the maximum extent, so that each working frequency can be filtered by using a special band-pass filter, and the out-of-band interference is inhibited to the maximum extent. In addition, the multiple antennas are arranged, so that the multiple-input multiple-output function of the antennas can be realized, and the function of simultaneous receiving can be realized by arranging the two-port duplexer channel.
The embodiment of the present invention further provides a wireless communication device, including the radio frequency front end module described in any of the above embodiments.
The foregoing describes in detail a radio frequency front-end module and a wireless communication device covering multiple frequency bands according to embodiments of the present invention, and a specific example is applied in the present disclosure to explain the principle and implementation of the present invention, and the description of the foregoing embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (6)
1. A radio frequency front-end module covering multiple frequency bands is characterized by comprising a radio frequency transceiver, a first power amplifier working in a first frequency band, a second power amplifier working in a second frequency band, a first low noise amplifier, at least three band-pass filters, a first selection switch, a second selection switch, a third selection switch and a first antenna;
wherein the working frequency band of at least one of the band-pass filters is within one of the first frequency band and the second frequency band, and the working frequency bands of at least two of the band-pass filters are within the other of the first frequency band and the second frequency band;
the first selection switch, the second selection switch and the third selection switch are provided with a plurality of selection ends, the first selection switch is provided with three selection ends, and the number of the selection ends of the second selection switch and the third selection switch is the same as that of the band-pass filters; the first power amplifier, the second power amplifier and first low noise amplifier respectively with the radio frequency transceiver is connected, first selector switch's three select terminal respectively with first power amplifier second power amplifier and first low noise amplifier connects, first selector switch's common port with second selector switch's common port is connected, a plurality of band pass filter's one end respectively with a plurality of select terminal one-to-one of second selector switch are connected, a plurality of band pass filter's the other end respectively with a plurality of select terminal one-to-one of third selector switch are connected, third selector switch's common port is connected first antenna.
2. The multiband radio frequency front-end module of claim 1, further comprising a second antenna, wherein the third selection switch has two common terminals, one of the common terminals is connected to the first antenna, and the other common terminal is connected to the second antenna.
3. The multiband-covered radio frequency front-end module of claim 2, further comprising a fourth selection switch, a two-port duplexer, and a second low noise amplifier;
the second antenna is connected with a common terminal of the third selection switch through the fourth selection switch, wherein two selection terminals of the fourth selection switch are respectively connected with the two-port duplexer and the other common terminal of the third selection switch, and the common terminal of the fourth selection switch is connected with the second antenna; and the two-port duplexer is connected with the radio frequency transceiver through the second low noise amplifier.
4. The RF front-end module of claim 1, wherein the first band is N77 (3300-.
5. The RF front-end module covering multiple frequency bands of claim 4, wherein the operating frequency bands of the band-pass filters are respectively B42 (3400-.
6. A wireless communication device comprising a multi-band covered radio frequency front end module according to any of claims 1-5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122495247.3U CN215990786U (en) | 2021-10-15 | 2021-10-15 | Radio frequency front-end module covering multiple frequency bands and wireless communication equipment |
| PCT/CN2022/116422 WO2023061090A1 (en) | 2021-10-15 | 2022-09-01 | Radio frequency front-end module covering multiple frequency bands and wireless communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122495247.3U CN215990786U (en) | 2021-10-15 | 2021-10-15 | Radio frequency front-end module covering multiple frequency bands and wireless communication equipment |
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| CN215990786U true CN215990786U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122495247.3U Active CN215990786U (en) | 2021-10-15 | 2021-10-15 | Radio frequency front-end module covering multiple frequency bands and wireless communication equipment |
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| CN (1) | CN215990786U (en) |
| WO (1) | WO2023061090A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114928387A (en) * | 2022-03-29 | 2022-08-19 | 荣耀终端有限公司 | MIMO receiving device and terminal equipment of antenna |
| WO2023061090A1 (en) * | 2021-10-15 | 2023-04-20 | 深圳飞骧科技股份有限公司 | Radio frequency front-end module covering multiple frequency bands and wireless communication device |
| WO2023197959A1 (en) * | 2022-04-11 | 2023-10-19 | 中兴通讯股份有限公司 | Multiplexer and radio frequency device |
| CN117526992A (en) * | 2024-01-04 | 2024-02-06 | 中科海高(成都)电子技术有限公司 | Radio frequency receiving and transmitting circuit, radio frequency front-end module and electronic equipment |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104518818A (en) * | 2013-09-29 | 2015-04-15 | 芯迪半导体科技（上海）有限公司 | Wireless system multiband transceiver |
| US10812049B2 (en) * | 2018-09-06 | 2020-10-20 | Apple Inc. | Reconfigurable feed-forward for electrical balance duplexers (EBD) |
| JP2020188337A (en) * | 2019-05-13 | 2020-11-19 | 株式会社村田製作所 | Front-end circuit, diversity circuit, and communication device |
| US20200412403A1 (en) * | 2019-06-27 | 2020-12-31 | Skyworks Solutions, Inc. | Rf front-end with filter-based interface to multi-feed antenna |
| JP2021048566A (en) * | 2019-09-20 | 2021-03-25 | 株式会社村田製作所 | High frequency module and communication device |
| CN113016145A (en) * | 2020-05-06 | 2021-06-22 | 深圳市大疆创新科技有限公司 | Multi-frequency bi-directional amplifier, transceiver, control method, and storage medium |
| CN115589232A (en) * | 2020-09-27 | 2023-01-10 | Oppo广东移动通信有限公司 | Radio frequency L-PA Mid device, radio frequency transceiving system and communication equipment |
| CN112953573A (en) * | 2021-01-28 | 2021-06-11 | 广州慧智微电子有限公司 | Radio frequency front end architecture |
| CN215990786U (en) * | 2021-10-15 | 2022-03-08 | 深圳飞骧科技股份有限公司 | Radio frequency front-end module covering multiple frequency bands and wireless communication equipment |
-
2021
- 2021-10-15 CN CN202122495247.3U patent/CN215990786U/en active Active
-
2022
- 2022-09-01 WO PCT/CN2022/116422 patent/WO2023061090A1/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061090A1 (en) * | 2021-10-15 | 2023-04-20 | 深圳飞骧科技股份有限公司 | Radio frequency front-end module covering multiple frequency bands and wireless communication device |
| CN114928387A (en) * | 2022-03-29 | 2022-08-19 | 荣耀终端有限公司 | MIMO receiving device and terminal equipment of antenna |
| CN114928387B (en) * | 2022-03-29 | 2023-09-08 | 荣耀终端有限公司 | MIMO receiving device of antenna and terminal equipment |
| WO2023197959A1 (en) * | 2022-04-11 | 2023-10-19 | 中兴通讯股份有限公司 | Multiplexer and radio frequency device |
| CN117526992A (en) * | 2024-01-04 | 2024-02-06 | 中科海高(成都)电子技术有限公司 | Radio frequency receiving and transmitting circuit, radio frequency front-end module and electronic equipment |
| CN117526992B (en) * | 2024-01-04 | 2024-03-22 | 中科海高(成都)电子技术有限公司 | Radio frequency receiving and transmitting circuit, radio frequency front-end module and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023061090A1 (en) | 2023-04-20 |
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