CN209250631U - 4G rf processing circuitry - Google Patents
4G rf processing circuitry Download PDFInfo
- Publication number
- CN209250631U CN209250631U CN201920094252.3U CN201920094252U CN209250631U CN 209250631 U CN209250631 U CN 209250631U CN 201920094252 U CN201920094252 U CN 201920094252U CN 209250631 U CN209250631 U CN 209250631U
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- China
- Prior art keywords
- switch
- low
- signal
- noise amplifier
- radio frequency
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- Expired - Fee Related
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- 238000001914 filtration Methods 0.000 claims abstract description 8
- 208000005392 Spasm Diseases 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a kind of 4G rf processing circuitries, including radio-frequency receiving-transmitting control circuit, the input terminal of the radio-frequency receiving-transmitting control circuit connects RF switch U6, its output end connects RF switch U7, the transmitting signal of RF switch U6 is transmitted to radio frequency amplifier U4, low-noise amplifier U5 is connected on the RX path of RF switch U6, wave reception filtering circuit is connected between RF switch U6 and low-noise amplifier U5, the output pin of RF switch U7 is connect with radio frequency amplifier U4, the reception pin of RF switch U7 is connect with low-noise amplifier U5, the control pin of low-noise amplifier U5 and radio frequency amplifier U4 is connect with phase inverter U8.The power that the utility model increases 4G transmitting signal has simultaneously amplified the signal received so that transmitting range is farther, makes circuit that should have better receiving sensitivity, can receive fainter signal；When there is 2.4G signal in the environment, interference of the 2.4G signal to 4G equipment can be reduced.
Description
Technical field
The utility model relates to radio frequency chip technical field, especially a kind of 4G rf processing circuitry.
Background technique
UWB (Ultra Wideband) is a kind of no-load communication techniques, general to emit for the radio frequency chip of 4G frequency range
Power is all relatively low, is generally up to -41.3dBm/MHz.Due to the limitation of chip volume and function, dedicated 4G radio frequency chip
Transmission power is relatively low, in the occasion for needing telecommunication, depend merely on chip itself transmission power and receiving sensitivity without
Method reaches demand.Simultaneously because the limitation of chip volume and function, portion can not carry out excessive place to interference signal in the chip
Reason.
Now in the environment, universal due to wifi, 2.4G signal there are more and more, since 2.4Gwifi signal is general
Transmission power is relatively high, in this case, interference will be generated to UWB4G signal, especially as UWB 4G equipment and wifi
When equipment is closer, it is this interference just will affect it is bigger, will lead to the UWB 4G device talk bit error rate raising, or even occur
Phenomena such as cisco unity malfunction.
Utility model content
Technical problem to be solved by the utility model is: overcoming the deficiencies in the existing technology, providing one kind can directly connect
It is connected to the RF output end of 4G radio frequency chip, makes to emit signal power raising, improves receiving signal sensitivity, can also guarantee
4G equipment works normally and interference-free 4G rf processing circuitry.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of 4G rf processing circuitry, including penetrate
Frequency transmitting-receiving control circuit, the input terminal of the radio-frequency receiving-transmitting control circuit connect RF switch U6, and output end connection radio frequency is opened
U7 is closed, the transmitting signal of RF switch U6 is transmitted to radio frequency amplifier U4, connects low noise on the RX path of RF switch U6
Amplifier U5, is connected with wave reception filtering circuit between RF switch U6 and low-noise amplifier U5, the output of RF switch U7 is drawn
Foot is connect with radio frequency amplifier U4, and the reception pin of RF switch U7 is connect with low-noise amplifier U5, low-noise amplifier U5
It is connect with phase inverter U8 with the control pin of radio frequency amplifier U4.
The effect of RF switch U6 is switching transmitting and reception signal；The effect of radio frequency amplifier U4 is amplification radio-frequency transmissions
Signal；The effect of low-noise amplifier U5 is that amplification receives signal；The effect of RF switch U7 is switching radiofrequency signal；Phase inverter
The effect of U8 be by single-chip microcontroller control pin 3.3V level conversion to 5V level, can be used for controlling radio frequency amplifier U4 with it is low
The switch of noise amplifier U5.
In order to filter out 2.4G signal, further limit, the wave reception filtering circuit is printed on pcb board.
It for the ease of the disassembly of radio frequency amplifier U4 and low-noise amplifier U5, further limits, in the pcb board
Upper radio frequency amplifier U4 is screwed on low-noise amplifier U5.
It further limits, the RF switch U6 and RF switch U7 are all made of MASW-007107 chip.
It further limits, the radio frequency amplifier U4 uses HMC326MS8G chip.
It further limits, the low-noise amplifier U5 uses PMA3-83LN+ chip.
It further limits, the phase inverter U8 uses SN74LVC14 chip.
The beneficial effects of the utility model are: the utility model increases the power of 4G transmitting signal, so that transmitting range
It is farther, the signal received has been simultaneously amplified, has made circuit that should there is better receiving sensitivity, fainter letter can be received
Number；When there is 2.4G signal in the environment, interference of the 2.4G signal to 4G equipment can be reduced.
Detailed description of the invention
The present invention will be further described with embodiment with reference to the accompanying drawing.
Fig. 1 is the structural block diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Fig. 3 is the PCB figure of the utility model.
Specific embodiment
The utility model is further described presently in connection with attached drawing.These attached drawings are simplified schematic diagram only to show
Meaning mode illustrates the basic structure of the utility model, therefore it only shows composition related with the utility model.
As shown in Figures 1 to 3, a kind of 4G rf processing circuitry of the present embodiment, including radio-frequency receiving-transmitting control circuit, it is described to penetrate
The input terminal of frequency transmitting-receiving control circuit connects RF switch U6, and output end connects RF switch U7, the transmitting of RF switch U6
Signal is transmitted to radio frequency amplifier U4, connects low-noise amplifier U5 on the RX path of RF switch U6, RF switch U6 and
Wave reception filtering circuit is connected between low-noise amplifier U5, the output pin of RF switch U7 is connect with radio frequency amplifier U4,
The reception pin of RF switch U7 is connect with low-noise amplifier U5, and the control of low-noise amplifier U5 and radio frequency amplifier U4 are drawn
Foot is connect with phase inverter U8, and wave reception filtering circuit is printed on pcb board, and radio frequency amplifier U4 is screwed onto low noise on pcb board
On acoustic amplifier U5.
In the present embodiment, RF switch U6 and RF switch U7 is all made of MASW-007107 chip, radio frequency amplifier U4
Using HMC326MS8G chip, low-noise amplifier U5 uses PMA3-83LN+ chip, and phase inverter U8 uses SN74LVC14 core
Piece.
Working principle is as follows:
4G radiofrequency signal passes through RF switch U6, then amplifies by radio frequency amplifier U4, finally passes through RF switch again
U7 sends out signal；In signal receive process, 4G signal passes through RF switch U7, then will connect by low-noise amplifier U5
The signal received amplifies, and then switches by RF switch U6, reaches microcontroller.In this process, transmitting
Signal and the signal received improve signal sensitivity all by amplifying.Meanwhile in PCB realization, it is received back road,
Wave reception filtering circuit is increased between RF switch U6 and low-noise amplifier U5, the 2.4G wifi received can be filtered out
Signal.
Above embodiment is only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with this skill
The personage of art can understand the content of the utility model and be implemented, and the protection model of the utility model can not be limited with this
It encloses, all equivalent change or modifications according to made by the spirit of the present invention essence should all cover the protection model in the utility model
In enclosing.
Claims (7)
1. a kind of 4G rf processing circuitry, including radio-frequency receiving-transmitting control circuit, it is characterised in that: the radio-frequency receiving-transmitting control circuit
Input terminal connect RF switch U6, output end connects RF switch U7, and the transmitting signal of RF switch U6 is transmitted to radio frequency
Amplifier U4 connects low-noise amplifier U5, RF switch U6 and low-noise amplifier U5 on the RX path of RF switch U6
Between be connected with wave reception filtering circuit, the output pin of RF switch U7 is connect with radio frequency amplifier U4, and RF switch U7's connects
Spasm foot is connect with low-noise amplifier U5, the control pin of low-noise amplifier U5 and radio frequency amplifier U4 with phase inverter U8
Connection.
2. 4G rf processing circuitry according to claim 1, it is characterised in that: the wave reception filtering circuit is printed on PCB
On plate.
3. 4G rf processing circuitry according to claim 2, it is characterised in that: the radio frequency amplifier U4 on the pcb board
It is screwed on low-noise amplifier U5.
4. 4G rf processing circuitry according to claim 1, it is characterised in that: the RF switch U6 and RF switch U7
It is all made of MASW-007107 chip.
5. 4G rf processing circuitry according to claim 1, it is characterised in that: the radio frequency amplifier U4 is used
HMC326MS8G chip.
6. 4G rf processing circuitry according to claim 1, it is characterised in that: the low-noise amplifier U5 is used
PMA3-83LN+ chip.
7. 4G rf processing circuitry according to claim 1, it is characterised in that: the phase inverter U8 uses SN74LVC14
Chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920094252.3U CN209250631U (en) | 2019-01-21 | 2019-01-21 | 4G rf processing circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920094252.3U CN209250631U (en) | 2019-01-21 | 2019-01-21 | 4G rf processing circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209250631U true CN209250631U (en) | 2019-08-13 |
Family
ID=67536584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920094252.3U Expired - Fee Related CN209250631U (en) | 2019-01-21 | 2019-01-21 | 4G rf processing circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209250631U (en) |
-
2019
- 2019-01-21 CN CN201920094252.3U patent/CN209250631U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 |