CN218829857U - Radio frequency receiving module and radio frequency chip - Google Patents
Radio frequency receiving module and radio frequency chip Download PDFInfo
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- CN218829857U CN218829857U CN202222893232.7U CN202222893232U CN218829857U CN 218829857 U CN218829857 U CN 218829857U CN 202222893232 U CN202222893232 U CN 202222893232U CN 218829857 U CN218829857 U CN 218829857U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model provides a radio frequency receiving module and radio frequency chip, including the signal reception end, multichannel radio frequency switch, wave filter, low noise amplifier and the signal sending end that connect gradually, still include harmonious inductance and input matching network, the first end of harmonious inductance connect in the signal reception end with between the multichannel radio frequency switch, the second end ground connection of harmonious inductance, the first end of input matching network is connected in the output of wave filter, the second end of input matching network connect in low noise amplifier's input, low noise amplifier's output is connected to the signal sending end. The utility model discloses a radio frequency receiving module and radio frequency chip's radio frequency noise coefficient is little, the reliability is high, the frequency channel restraines effectually.
Description
Technical Field
The utility model relates to a wireless communication technology field especially relates to a radio frequency receiving module and radio frequency chip.
Background
As people enter the information age, wireless communication technology has been rapidly developed, and mobile phones, wireless local area networks, bluetooth and the like have become an indispensable part of social life and development. Advances in wireless communication technology are not open to the development of radio frequency circuits and microwave technology. Currently, in a wireless transceiving system, a radio frequency amplifier is one of important components.
The existing communication is used as a link of modern social civilization, and great convenience is brought to the life of people. The requirement of mass data processing is urging the coming of the 5G era. In a communication system, a radio frequency front end receiving module is responsible for performing preliminary processing, including filtering, amplification and the like, on signals received from an antenna, and is indispensable in various intelligent terminals. The key components of the system comprise a multi-channel radio frequency switch, a filter, a matching network and a low noise amplifier. With the increasing maturity of communication technology, radio frequency receiving modules with high sensitivity, high reliability and low cost are increasingly demanded. In a receiving system with fixed bandwidth and demodulation signal-to-noise ratio, the noise coefficient becomes a key index affecting the sensitivity.
However, the filter of the rf front-end receiving module in the prior art has a large process error, a large rf noise coefficient, and low reliability.
SUMMERY OF THE UTILITY MODEL
Not enough to above prior art, the utility model provides a radio frequency noise coefficient is little, the reliability is high, frequency channel restraines effectual radio frequency receiving module and radio frequency chip to solve above-mentioned technical problem.
In order to solve the technical problem, the utility model adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a radio frequency receiving module, including signal receiving terminal, multichannel radio frequency switch, wave filter, low noise amplifier and the signal sending terminal of series connection in proper order, still include tuning inductance and input matching network, the first end of tuning inductance is connected to the signal receiving terminal with between the multichannel radio frequency switch, the second end ground connection of tuning inductance, the first end of input matching network is connected in the output of wave filter, the second end of input matching network connect in low noise amplifier's input, low noise amplifier's output is connected to the signal sending terminal.
Preferably, the input matching network includes a second inductor and a third inductor, a first end of the second inductor and a first end of the third inductor are both connected to the output end of the filter, a second end of the second inductor is grounded, and a second end of the third inductor is connected to the input end of the low noise amplifier.
Preferably, the multichannel radio frequency switch includes a first series transistor, a second series transistor, a third series transistor, and a fourth series transistor, a first end of the first series transistor, a first end of the second series transistor, a first end of the third series transistor, and a first end of the fourth series transistor are all connected to the signal receiving terminal, and a second end of the first series transistor is connected to the input terminal of the filter.
Preferably, the multi-channel radio frequency switch further comprises a first parallel transistor, a second parallel transistor, a third parallel transistor and a fourth parallel transistor, wherein a first end of the first parallel transistor is connected to a second end of the first series transistor, and a second end of the first parallel transistor is grounded.
Preferably, the low noise amplifier comprises a main amplification path for low noise amplification of the signal and a bypass path for attenuation of the signal; a first end of the main amplification path is used as an input end of the low noise amplifier and connected to an output end of the input matching network, and a second end of the main amplification path is used as an output end of the low noise amplifier and connected to the signal transmitting end; the first end of the bypass path and the second end of the bypass path are connected to the first end of the main amplification path and the second end of the main amplification path, respectively.
Preferably, the filter is one of a BAW filter, an FBAR filter, an IPD filter and an LTCC filter.
Preferably, the filter is an IPD filter or an LTCC filter.
Preferably, the signal receiving end is an antenna.
In a second aspect, the present invention provides a radio frequency chip, which includes the above radio frequency receiving module.
Compared with the prior art, the embodiment of the utility model provides an in, through with signal receiving terminal, multichannel radio frequency switch, wave filter, low noise amplifier and signal sending terminal series connection in proper order, with the first end of tuning inductance is connected in between signal receiving terminal and the multichannel radio frequency switch, the second end ground connection of tuning inductance, the first end of input matching network is connected in the output of wave filter, the second end of input matching network is connected in the input of low noise amplifier, the output of low noise amplifier is connected to the signal sending terminal; the tuning inductor arranged between the signal receiving end and the multi-channel radio frequency switch is used for eliminating the capacitance of the radio frequency switch, a signal is input to the multi-channel radio frequency switch from the signal receiving end, the multi-channel radio frequency switch enters a filter after a signal path is selected by the multi-channel radio frequency switch, the filter selects and inputs a frequency band with low noise amplification, and the rest frequency bands are suppressed; the filter outputs a required frequency band signal and then enters the input matching network, the low-noise amplifier receives the signal output by the filter and performs low-noise amplification or attenuation on the signal, the low-noise amplifier outputs the signal and then enters the signal output end, and the radio frequency receiving module is low in noise coefficient, high in reliability and capable of better inhibiting the B41 frequency band through the existence of the tuning inductor and the second inductor.
Drawings
The present invention will be described in detail with reference to the accompanying drawings. The foregoing and other aspects of the invention will become more apparent and more readily appreciated from the following detailed description, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a circuit diagram of a radio frequency receiving module according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a multi-channel rf switch according to an embodiment of the present invention;
fig. 3 is a circuit diagram of an input matching network according to an embodiment of the present invention.
The radio frequency receiving module comprises a radio frequency receiving module 100, a signal receiving end 1, a multi-channel radio frequency switch 2, a multi-channel radio frequency switch 21, a first series transistor 22, a second series transistor 23, a third series transistor 24, a fourth series transistor 3, a filter 4, an input matching network 5, a low noise amplifier 51, a main amplification path 52, a bypass path 6, a signal sending end 7, a first parallel transistor 8, a second parallel transistor 9, a third parallel transistor 10 and a fourth parallel transistor.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Example one
Please refer to fig. 1-3, an embodiment of the present invention provides a radio frequency receiving module 100, including signal receiving terminal 1, multichannel radio frequency switch 2, wave filter 3, low noise amplifier 5 and signal sending terminal 6 (RX) of series connection in proper order, still include tuning inductance L1 and input matching network 4, tuning inductance L1's first end connect in signal receiving terminal 1 with between the multichannel radio frequency switch 2, tuning inductance L1's second end ground GND, the first end of input matching network 4 connects in wave filter 3's output, the second end of input matching network 4 connect in low noise amplifier 5's input, low noise amplifier 5's output is connected to signal sending terminal 6.
The signal receiving end 1 is used for receiving electromagnetic signals and transmitting the electromagnetic signals into the multi-channel radio frequency switch 2, in order to eliminate the capacitance presented by the radio frequency switch, a tuning inductor L1 connected to the ground is connected in parallel in front of the radio frequency switch, and the tuning inductor L1 optimizes matching and can reduce the noise of a receiving module.
Specifically, a signal receiving end 1, a multi-channel radio frequency switch 2, a filter 3, a low-noise amplifier 5 and a signal transmitting end 6 are sequentially connected, a first end of a tuning inductor L1 is connected between the signal receiving end 1 and the multi-channel radio frequency switch 2, a second end of the tuning inductor L1 is grounded, a first end of an input matching network 4 is connected to an output end of the filter 3, a second end of the input matching network 4 is connected to an input end of the low-noise amplifier 5, and an output end of the low-noise amplifier 5 is connected to the signal transmitting end 6; the tuning inductor L1 arranged between the signal receiving end 1 and the multi-channel radio frequency switch 2 is used for eliminating the capacitance of the radio frequency switch, signals are input into the multi-channel radio frequency switch 2 from the signal receiving end 1, the multi-channel radio frequency switch 2 enters the filter 3 after a signal path is selected, the filter 3 selects and inputs a frequency band with low noise amplification, and the rest frequency bands are suppressed; the filter 3 outputs a required frequency band signal and then enters the input matching network 4, the low-noise amplifier receives the signal output by the filter 3 and performs low-noise amplification or attenuation on the signal, and the low-noise amplifier outputs the signal and then enters the signal output end, so that the radio frequency receiving module is low in noise coefficient, high in reliability and capable of better inhibiting the B41 frequency band.
Preferably, the tuning inductor L1 is a tuning inductor. The tuning inductance can optimize matching and reduce noise of the receiving module.
In this embodiment, the input matching network 4 includes a second inductor L2 and a third inductor L3, a first end of the second inductor L2 and a first end of the third inductor L3 are both connected to the output end of the filter 3, a second end of the second inductor L2 is connected to the ground GND, and a second end of the third inductor L3 is connected to the input end of the low noise amplifier 5.
Specifically, after the signal is filtered by the filter 3, a second inductor L2 connected in parallel to the ground is additionally connected between the third inductor L3 connected in series and the filter 3. The existence of the inductor eliminates the influence caused by different performances of filters 3 in different batches to a certain extent, simultaneously improves the suppression of a B41 frequency band, and enables the input impedance matching of low-noise amplification to be more flexible.
Optionally, the tuning inductor L1, the second inductor L2, and the third inductor L3 are all off-chip inductors, and are used to reduce the noise coefficient of the radio frequency receiving module.
In the present embodiment, the multi-channel rf switch 2 includes a first series transistor 21, a second series transistor 22, a third series transistor 23, and a fourth series transistor 24, a first end of the first series transistor 21, a first end of the second series transistor 22, a first end of the third series transistor 23, and a first end of the fourth series transistor 24 are connected to the signal receiving terminal 1, and a second end of the first series transistor 21 is connected to an input terminal of a filter 3.
Optionally, the second terminal of the second series transistor 22, the second terminal of the third series transistor 23, and the second terminal of the fourth series transistor 24 are connected to input terminals of other rf paths.
Specifically, through the setting with first series transistor 21, second series transistor 22, third series transistor 23 and fourth series transistor 24 for increase the multichannel radio frequency, the filter 3 of being convenient for chooses for use suitable radio frequency signal to carry out filtering processing, and the filtering signal after the loudspeaker is handled can adapt to different equipment and use, and accommodation is wide.
Preferably, the isolation between the plurality of ports is increased by the shunt transistor connecting the first series transistor 21, the second series transistor 22, the third series transistor 23 and the fourth series transistor 24 in parallel to the ground.
Preferably, the multi-channel radio frequency switch 2 includes not only 4 channels, but also 2 channels, 3 channels, 5 channels, etc., which may be selected according to the actual situation, and will not be described one by one here.
In this embodiment, only a 1P4T rf switch is used for illustration, which may be 1p5t,2p4t,2p5t, etc., and one of the ports to which the filter may be connected. The TRX1/2/3 connection may be a filter input, an antenna LNA input, or a direct input signal, and the specific connection is selected according to the actual application and will not be described one by one here.
In this embodiment, the multichannel rf switch 2 further includes a first parallel transistor 7, a second parallel transistor 8, a third parallel transistor 9, and a fourth parallel transistor 10, wherein a first end of the first parallel transistor 7 is connected to a second end of the first series transistor 21, and a second end of the first parallel transistor 7 is grounded. Optionally, the first parallel transistor 7, the second parallel transistor 8, the third parallel transistor 9, and the fourth parallel transistor 10 have the same principle, and are not described one by one here.
In this embodiment, the low noise amplifier 5 includes a main amplification path 51 for performing low noise amplification on a signal and a bypass path 52 for attenuating the signal, a first end of the main amplification path 51 is connected to the output end of the input matching network 4 as the input end of the low noise amplifier 5, and a second end of the main amplification path 51 is connected to the signal transmitting end 6 as the output end of the low noise amplifier 5; a first end of the bypass path 52 and a second end of the bypass path 52 are connected to a first end of the main amplification path 51 and a second end of the main amplification path 51, respectively.
Specifically, the main amplification path 51 is used for amplifying the signal output by the input matching network 4, and the signal is output to the signal transmitting terminal 6 through the output terminal of the main amplification path 51, and is transmitted through the signal transmitting terminal 6.
By connecting the first and second ends of the bypass path 52 to the first and second ends of the main amplification path 51, respectively, the bypass path 52 can attenuate a large input signal. This enables the low noise amplifier to be used to achieve low noise amplification of signals, and usually different gain steps are set to cope with input signals of different powers. For larger input signals, the signals can be attenuated by the bypass path 52 and then output, and the safety is high.
Preferably, the low noise amplifier design comprises a bypass attenuation design, and is integrated with the multi-channel radio frequency switch 2 on a silicon chip (SOI Die). If the radio frequency receiving module further comprises a TX transmitting part, the controller and the coupler can be integrated at the same time, so that the cost is reduced, and the area is saved.
In this embodiment, the type of the filter 3 is one of a BAW filter, an FBAR filter, an IPD filter and an LTCC filter.
Specifically, the 5G common frequency bands n77 (3.3-4.2G) and n79 (4.4-5G) have a wide band-to-band interval, so that the filter 3 does not depend on a steep roll-off curve. The BAW/FABAR filter has steep edge, large out-of-band attenuation, low insertion loss and low temperature coefficient, and has very excellent performance.
Preferably, the filter is an IPD filter or an LTCC filter. Since BAW/FBAR filters are process-dependent and expensive, commonly used IPD/LTCC filters are preferred.
In this embodiment, the signal receiving end 1 is an Antenna (ANT). The antenna is used for receiving electromagnetic signals, transmitting the electromagnetic signals into the multi-channel radio frequency switch 2, and performing filtering processing by the filter 3 after channel selection is performed through the multi-channel radio frequency switch 2.
Example two
The utility model provides a radio frequency chip, including the radio frequency receiving module 100 of above-mentioned embodiment one. The radio frequency chip has low noise coefficient and high reliability, and can better inhibit the B41 frequency band.
It should be noted that the above-mentioned embodiments described with reference to the drawings are only intended to illustrate the present invention and not to limit the scope of the present invention, and those skilled in the art should understand that modifications or equivalent substitutions made on the present invention without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, unless the context indicates otherwise, words that appear in the singular include the plural and vice versa. Additionally, all or a portion of any embodiment may be utilized with all or a portion of any other embodiment, unless stated otherwise.
Claims (9)
1. The utility model provides a radio frequency receiving module, includes signal reception end, multichannel radio frequency switch, wave filter, low noise amplifier and the signal transmission end of series connection in proper order, its characterized in that still includes harmonious inductance and input matching network, the first end of harmonious inductance is connected to the signal reception end with between the multichannel radio frequency switch, the second end ground connection of harmonious inductance, the first end of input matching network is connected in the output of wave filter, the second end of input matching network connect in low noise amplifier's input, low noise amplifier's output is connected to signal transmission end.
2. The rf receiving module of claim 1, wherein the input matching network comprises a second inductor and a third inductor, a first terminal of the second inductor and a first terminal of the third inductor are both connected to the output terminal of the filter, a second terminal of the second inductor is connected to ground, and a second terminal of the third inductor is connected to the input terminal of the lna.
3. The rf receiving module of claim 2, wherein the multichannel rf switch comprises a first series transistor, a second series transistor, a third series transistor and a fourth series transistor, a first terminal of the first series transistor, a first terminal of the second series transistor, a first terminal of the third series transistor and a first terminal of the fourth series transistor are all connected to the signal receiving terminal, and a second terminal of the first series transistor is connected to an input terminal of a filter.
4. The RF receiving module of claim 3, wherein the multichannel RF switch further comprises a first parallel transistor, a second parallel transistor, a third parallel transistor, and a fourth parallel transistor, a first terminal of the first parallel transistor is connected to a second terminal of the first series transistor, and a second terminal of the first parallel transistor is connected to ground.
5. The rf receiving module of claim 1, wherein the low noise amplifier comprises a main amplifying path for low noise amplification of the signal and a bypass path for attenuation of the signal; a first end of the main amplification path is used as an input end of the low noise amplifier and connected to an output end of the input matching network, and a second end of the main amplification path is used as an output end of the low noise amplifier and connected to the signal transmitting end; the first end of the bypass path and the second end of the bypass path are connected to the first end of the main amplification path and the second end of the main amplification path, respectively.
6. The RF receiving module of claim 1, wherein the filter is one of BAW filter, FBAR filter, IPD filter and LTCC filter.
7. The RF receiving module of claim 6, wherein the filter is an IPD filter or an LTCC filter.
8. The RF receiving module of claim 1, wherein the signal receiving end is an antenna.
9. A radio frequency chip comprising the radio frequency receiving module according to any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222893232.7U CN218829857U (en) | 2022-10-28 | 2022-10-28 | Radio frequency receiving module and radio frequency chip |
| PCT/CN2023/115037 WO2024087849A1 (en) | 2022-10-28 | 2023-08-25 | Radio frequency receiving module and radio frequency chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222893232.7U CN218829857U (en) | 2022-10-28 | 2022-10-28 | Radio frequency receiving module and radio frequency chip |
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| Publication Number | Publication Date |
|---|---|
| CN218829857U true CN218829857U (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222893232.7U Active CN218829857U (en) | 2022-10-28 | 2022-10-28 | Radio frequency receiving module and radio frequency chip |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN218829857U (en) |
| WO (1) | WO2024087849A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087849A1 (en) * | 2022-10-28 | 2024-05-02 | 深圳飞骧科技股份有限公司 | Radio frequency receiving module and radio frequency chip |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8649739B2 (en) * | 2010-01-06 | 2014-02-11 | Rfaxis, Inc. | Increased receive sensitivity radio frequency front end integrated circuits |
| CN106100649A (en) * | 2016-08-22 | 2016-11-09 | 宇龙计算机通信科技(深圳)有限公司 | Radio circuit and communication terminal |
| CN110572167B (en) * | 2019-09-09 | 2021-07-20 | 广州粒子微电子有限公司 | Radio frequency front end transmitting circuit, radio frequency front end receiving circuit and radio frequency front end circuit |
| CN110932747B (en) * | 2019-12-02 | 2020-08-21 | 翱捷智能科技(上海)有限公司 | Integrated high-performance radio frequency transmit-receive switch |
| CN218829857U (en) * | 2022-10-28 | 2023-04-07 | 深圳飞骧科技股份有限公司 | Radio frequency receiving module and radio frequency chip |
-
2022
- 2022-10-28 CN CN202222893232.7U patent/CN218829857U/en active Active
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2023
- 2023-08-25 WO PCT/CN2023/115037 patent/WO2024087849A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087849A1 (en) * | 2022-10-28 | 2024-05-02 | 深圳飞骧科技股份有限公司 | Radio frequency receiving module and radio frequency chip |
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| WO2024087849A1 (en) | 2024-05-02 |
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