CN206807446U - A kind of RF transceiver circuit system - Google Patents
A kind of RF transceiver circuit system Download PDFInfo
- Publication number
- CN206807446U CN206807446U CN201720714423.9U CN201720714423U CN206807446U CN 206807446 U CN206807446 U CN 206807446U CN 201720714423 U CN201720714423 U CN 201720714423U CN 206807446 U CN206807446 U CN 206807446U
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- circuit
- input
- output end
- local oscillator
- receiving
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Abstract
The utility model discloses a kind of RF transceiver circuit system, including receiving circuit and radiating circuit, receiving circuit includes the first receiving circuit and the second receiving circuit for sharing a receiving terminal；Radiating circuit includes the first radiating circuit and the second radiating circuit for sharing a transmitting terminal；First receiving circuit and the first radiating circuit share the first local oscillator of connection, and the second receiving circuit and the second radiating circuit connect the second local oscillator respectively.The utility model provides a kind of radio-frequency module, can meet the same frequency application demand for having multi-signal to receive and dispatch, meanwhile, input and output add the flexibility of signal input and output by the way of distribution synthesizes.This radio-frequency module is based on same timing reference input and produces multichannel local oscillator simultaneously in same equipment, the mixing of multiple signals is provided, configuration up-conversion or down coversion as needed, and signal synthesis is carried out respectively in intermediate frequency and radio frequency, further enrich the species of signal transmission.
Description
Technical field
It the utility model is related to radio-frequency module, more particularly to a kind of RF transceiver circuit system.
Background technology
In common radio-frequency receiving-transmitting application, only receive and launch all the way all the way, system shares a local oscillator, carries out respectively
Up-conversion and down coversion, so as to realize transmission-receiving function.It can solve the problem that the pickup and delivery problem of single channel, for there is the application of a variety of receptions
With regard to needing multiple modules to complete, cost is on the one hand added, on the other hand the requirement to space is also bigger.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of RF transceiver circuit system.The circuit meets simultaneously
Need the synchronous applications of transmitting-receiving multiple signals.
To reach above-mentioned purpose, the utility model provides following technical scheme, a kind of RF transceiver circuit system, including extremely
A few receiving circuit and at least one radiating circuit, receiving circuit include sharing the first receiving circuit and the of receiving terminal
Two receiving circuits；Radiating circuit includes the first radiating circuit and the second radiating circuit for sharing a transmitting terminal；First receives electricity
Road and the first radiating circuit share the first local oscillator of connection, and the second receiving circuit and the second radiating circuit connect the second local oscillator respectively,
Clock circuit is provided between first local oscillator and the second local oscillator, clock circuit is connected with the first local oscillator and the second local oscillator respectively；
First receiving circuit includes the first down-converter unit being connected with receiving terminal, the first down-converter unit and first
Local oscillator connects, and second receiving circuit includes the second down-converter unit for be connected with receiving terminal, the second down-converter unit and the
Two local oscillators connect；First radiating circuit includes the first upconverting unit for be connected with transmitting terminal, the first upconverting unit and
First local oscillator connects, and second radiating circuit includes the second upconverting unit being connected with transmitting terminal, the second upconverting unit
It is connected with the second local oscillator；First down-converter unit is also connected with the first upconverting unit, the second down-converter unit also with second
Converter unit connects.
First down-converter unit includes the first high-frequency amplifier circuit, the first filter circuit, the second filter circuit, first
Mixting circuit and the first IF amplifier circuit, the input of first high-frequency amplifier circuit are connected with receiving terminal, the first high frequency
The output end of amplifying circuit is connected with the input of the first filter circuit, the output end of the first filter circuit and the first mixting circuit
The connection of one of input, the input of the second filter circuit is connected with the first local oscillator, the output end of the second filter circuit
It is connected with another input of the first mixting circuit, the output end of the first mixting circuit and the input of the first IF amplifier circuit
End connection, the output end of the first IF amplifier circuit are connected with the first upconverting unit.
First upconverting unit includes the first intermediate frequency bandwidth-limited circuit, the 3rd mixting circuit, the first high-frequency band pass
Filter circuit, the first radio frequency amplifying circuit, the second high-frequency band pass filter circuit, the first power attenuation circuit and the first High frequency amplification
Circuit, the input of the first intermediate frequency bandwidth-limited circuit are connected with the output end of the first IF amplifier circuit, the first intermediate frequency
The output end of bandwidth-limited circuit is connected with one of input of the 3rd mixting circuit, the output end of the 3rd mixting circuit with
The input connection of first high-frequency band pass filter circuit, output end and the first radio frequency amplification electricity of the first high-frequency band pass filter circuit
The input connection on road, the output end of the first radio frequency amplifying circuit are connected with the input of the second high-frequency band pass filter circuit, the
The output end of two high-frequency band pass filter circuits is connected with the input of the first power attenuation circuit, the first power attenuation circuit it is defeated
Go out end to be connected with the input of the first high-frequency amplifier circuit, the output end of the first high-frequency amplifier circuit is connected with transmitting terminal；It is described
First local oscillator is connected with another input of the 3rd mixting circuit.
Further, second down-converter unit includes the second high-frequency amplifier circuit, the 3rd filter circuit, the 4th filtered electrical
Road, the second mixting circuit and the second IF amplifier circuit, the input of second high-frequency amplifier circuit are connected with receiving terminal, the
The output end of two high-frequency amplifier circuits is connected with the input of the 3rd filter circuit, and the output end of the 3rd filter circuit is mixed with second
One of input connection of frequency circuit, the input of the 4th filter circuit are connected with the second local oscillator, the 4th filter circuit
Output end is connected with another input of the second mixting circuit, the output end of the second mixting circuit and the second IF amplifier circuit
Input connection, the output end of the second IF amplifier circuit is connected with the second upconverting unit.
The beneficial effects of the utility model are：
This radio-frequency module is based on same timing reference input and produces multichannel local oscillator simultaneously in same equipment, there is provided multichannel is believed
Number mixing, configure up-conversion or down coversion as needed, and signal synthesis is carried out respectively in intermediate frequency and radio frequency, further enrich
The species of signal transmission.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing illustrates：
Fig. 1 is theory structure block diagram of the present utility model；
Fig. 2 is the theory diagram of the first down-converter unit；
Fig. 3 is the theory diagram of the second down-converter unit；
Fig. 4 is the theory diagram of the first upconverting unit；
Fig. 5 is the theory diagram of the second upconverting unit.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in figure 1, a kind of RF transceiver circuit system, including at least one receiving circuit and at least one transmitting electricity
Road, receiving circuit include the first receiving circuit and the second receiving circuit for sharing a receiving terminal；Radiating circuit includes sharing one
The first radiating circuit and the second radiating circuit of individual transmitting terminal；First receiving circuit and the first radiating circuit share connection first
Shake, the second receiving circuit and the second radiating circuit connect the second local oscillator respectively, and clock electricity is provided between the first local oscillator and the second local oscillator
Road, clock circuit are connected with the first local oscillator and the second local oscillator respectively；
First receiving circuit includes the first down-converter unit being connected with receiving terminal, the first down-converter unit and first
Local oscillator connects, and second receiving circuit includes the second down-converter unit for be connected with receiving terminal, the second down-converter unit and the
Two local oscillators connect；First radiating circuit includes the first upconverting unit for be connected with transmitting terminal, the first upconverting unit and
First local oscillator connects, and second radiating circuit includes the second upconverting unit being connected with transmitting terminal, the second upconverting unit
It is connected with the second local oscillator；First down-converter unit is also connected with the first upconverting unit, the second down-converter unit also with second
Converter unit connects.
Radiofrequency signal is distributed into two-way by receiving terminal, and radiofrequency signal enters the first receiving circuit all the way, and by the first local oscillator
Down coversion is carried out, radiofrequency signal is converted to intermediate-freuqncy signal, and another way radiofrequency signal enters the second receiving circuit, the first receiving circuit
It is identical with the workflow of the second receiving circuit；Radio-frequency module exports two-way intermediate-freuqncy signal, and intermediate-freuqncy signal enters the first hair all the way
Transmit-receive radio road simultaneously carries out up-conversion by the second local oscillator, and intermediate-freuqncy signal is converted to radiofrequency signal；Another way intermediate-freuqncy signal enters the second hair
The workflow of transmit-receive radio road, the first radiating circuit and the second radiating circuit is identical；Two-way radiofrequency signal is again after emitted end synthesis
Output.
Fig. 2 is the theory diagram of the first down-converter unit, and the first down-converter unit includes the first high-frequency amplifier circuit, first
Filter circuit, the second filter circuit, the first mixting circuit and the first IF amplifier circuit,
First high-frequency amplifier circuit carries out multistage amplification to the high-frequency signal of reception and modulates and be delivered to the first filter circuit
The filtering process of corresponding wave band is carried out, the first local oscillator will be delivered to the second filter circuit after the local oscillation signal amplification modulation of generation and enter
The filtering process of the corresponding wave band of row, high-frequency signal, local oscillation signal after the first filter circuit and the processing of the second filter circuit exist
First mixting circuit carries out Frequency mixing processing and down-converts to intermediate-freuqncy signal, and intermediate-freuqncy signal exports after the amplification of the first IF amplifier circuit
Into the modem of rear class.Down-conversion device is the key device of reception signal, and the first high-frequency amplifier circuit, first filter
Circuit, the second filter circuit, the first mixting circuit and the first IF amplifier circuit are pasted with the simple surface mounting technology of technique
Dress is integrated on pcb board, exempts the processing step of wire bonding, and cost is low, has miniaturization and high excellent of integrated level of circuit
Point.
Fig. 3 is the theory diagram of the second down-converter unit, the structure of the second down-converter unit and the first down-converter unit
Structure is identical.
Fig. 4 is the theory diagram of the first upconverting unit, and first upconverting unit includes the first intermediate frequency bandpass filtering
Circuit, the 3rd mixting circuit, the first high-frequency band pass filter circuit, the first radio frequency amplifying circuit, the second high-frequency band pass filter circuit,
First power attenuation circuit and the first high-frequency amplifier circuit, the input and the first intermediate frequency of the first intermediate frequency bandwidth-limited circuit
The output end connection of amplifying circuit, the output end of the first intermediate frequency bandwidth-limited circuit and one of input of the 3rd mixting circuit
End connection, the output end of the 3rd mixting circuit are connected with the input of the first high-frequency band pass filter circuit, the filter of the first high-frequency band pass
The output end of wave circuit is connected with the input of the first radio frequency amplifying circuit, the output end of the first radio frequency amplifying circuit and second high
The input connection of frequency band bandpass filter circuit, the output end of the second high-frequency band pass filter circuit are defeated with the first power attenuation circuit
Enter end connection, the output end of the first power attenuation circuit is connected with the input of the first high-frequency amplifier circuit, the first High frequency amplification
The output end of circuit is connected with transmitting terminal；First local oscillator is connected with another input of the 3rd mixting circuit.
The first intermediate frequency bandwidth-limited circuit is input to after the first IF amplifier circuit amplification in first down-converter unit
In the outer garbage signal of band in intermediate-freuqncy signal is suppressed.
In the utility model, by the input of output end and the first radio frequency amplifying circuit in the 3rd mixting circuit it
Between increase by the first high-frequency band pass filter circuit, the output end of the first radio frequency amplifying circuit connects the second high-frequency band pass filter circuit
Input, the output end output radiofrequency signal of the second high-frequency band pass filter circuit, it is suppressed that mixing interference signal etc. is useless to mix
The leakage of frequency product and local oscillation signal.
, can be with centering by increasing by the first intermediate frequency bandwidth-limited circuit before the 3rd mixting circuit in the utility model
The outer garbage signal of band in frequency signal is suppressed.
As the improvement to the present embodiment, the first upconverting unit also includes the first acoustic surface filter circuit.
The output signal of first local oscillator is inputted to the input of the first acoustic surface filter circuit, the first acoustic surface filter circuit
Output end be connected with the 3rd mixting circuit.
Wherein, the first acoustic surface filter circuit main function principle is the piezoelectric property using piezoelectric, using input with
The input signal of electric wave is converted into mechanical energy by output transducer, after treatment, then converts mechanical energy into electric signal, with up to
To the target for filtering unnecessary signal.
In the utility model, the secondary and high order that can be suppressed by the first acoustic surface filter circuit in local oscillation signal is humorous
Ripple.
As the improvement to the present embodiment, the first upconverting unit also includes the first high frequency adjustable amplifying circuit.
In the utility model, by increasing by the first high frequency adjustable amplifying circuit, power amplification is carried out to radiofrequency signal, and
Radiofrequency signal is exported by the first high frequency adjustable amplifying circuit, realizes adjustable to the power output of radiofrequency signal, improves electricity
The linearity on road.
The high frequency adjustable amplifying circuit includes the first power attenuation circuit and the first high-frequency amplifier circuit；
The output end of second high-frequency band pass filter circuit is connected with the input of the first power attenuation circuit, and the first power declines
The output end on powered down road is connected with the input of the first high-frequency amplifier circuit, the output end output radio frequency of the first high-frequency amplifier circuit
Signal.
In the utility model, the gain of radiofrequency signal is adjusted by the first power attenuation circuit, realized to output
Radiofrequency signal power adjustable.
By the first upconverting unit in the present embodiment, the first intermediate frequency of intermediate-freuqncy signal bandwidth-limited circuit suppresses with outer miscellaneous
Be input to the 3rd mixting circuit after ripple, the output signal of the first local oscillator pass through corresponding to the first acoustic surface filter circuit suppress it is secondary and
The 3rd mixting circuit is input to after multiple harmonic.3rd mixting circuit is mixed to intermediate-freuqncy signal and local oscillation signal, and output is high
Frequency signal, in order to suppress the leakage of local oscillation signal and various mixing interference signals, while circuit linearity degree is improved, add first
High-frequency band pass filter circuit and the second high-frequency band pass filter circuit, while in order to adjustable to high-frequency signal power output, add
First high frequency adjustable amplifying circuit, the first high frequency adjustable amplifying circuit is by the first power attenuation circuit and the first High frequency amplification electricity
Road forms.
Fig. 5 is the theory diagram of the second upconverting unit；In the utility model, the structure of the second upconverting unit and the
The structure of one upconverting unit is identical.
The technical scheme of the present embodiment, it is suppressed that the useless mixed product of mixing interference signal etc. and local oscillation signal are let out
Dew, i.e., the scattering frequency spectrum of the radiofrequency signal of output is controlled in the range of requiring, adjacent channel will not be impacted, and
And on the premise of power output efficiency is improved as far as possible, improve the linearity of circuit.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model has been described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The scope of restriction.
Claims (2)
- A kind of 1. RF transceiver circuit system, it is characterised in that：Including at least one receiving circuit and at least one radiating circuit, Receiving circuit includes the first receiving circuit and the second receiving circuit for sharing a receiving terminal；Radiating circuit includes sharing a hair Penetrate first radiating circuit and the second radiating circuit at end；First receiving circuit and the first radiating circuit share the first local oscillator of connection, Second receiving circuit and the second radiating circuit connect the second local oscillator respectively, and clock circuit is provided between the first local oscillator and the second local oscillator, Clock circuit is connected with the first local oscillator and the second local oscillator respectively；First receiving circuit includes the first down-converter unit being connected with receiving terminal, the first down-converter unit and the first local oscillator Connection, second receiving circuit include the second down-converter unit for be connected with receiving terminal, the second down-converter unit and second Shake connection；First radiating circuit includes the first upconverting unit being connected with transmitting terminal, the first upconverting unit and first Local oscillator connects, and second radiating circuit includes the second upconverting unit for being connected with transmitting terminal, the second upconverting unit and the Two local oscillators connect；First down-converter unit is also connected with the first upconverting unit, the second down-converter unit also with the second up-conversion Unit connects；First down-converter unit includes the first high-frequency amplifier circuit, the first filter circuit, the second filter circuit, the first mixing Circuit and the first IF amplifier circuit, the input of first high-frequency amplifier circuit are connected with receiving terminal, the first High frequency amplification The output end of circuit is connected with the input of the first filter circuit, the output end of the first filter circuit and the first mixting circuit its In the connection of input, the input of the second filter circuit is connected with the first local oscillator, the output end of the second filter circuit and the Another input connection of one mixting circuit, the output end of the first mixting circuit and the input of the first IF amplifier circuit connect Connect, the output end of the first IF amplifier circuit is connected with the first upconverting unit；First upconverting unit includes the 3rd mixting circuit, the first high-frequency band pass filter circuit, the first radio frequency amplifying circuit With the second high-frequency band pass filter circuit, the input of the 3rd mixting circuit and the output end of the first IF amplifier circuit connect Connect, the output end of the 3rd mixting circuit is connected with the input of the first high-frequency band pass filter circuit, the first high-frequency band pass filtered electrical The output end on road is connected with the input of the first radio frequency amplifying circuit, the output end of the first radio frequency amplifying circuit and the second high frequency band The input connection of bandpass filter circuit, the output end of the second high-frequency band pass filter circuit are connected with transmitting terminal；First local oscillator It is connected with another input of the 3rd mixting circuit.
- A kind of 2. RF transceiver circuit system according to claim 1, it is characterised in that：The second upconverting unit bag Include the 4th mixting circuit, the 3rd high-frequency band pass filter circuit, the second radio frequency amplifying circuit and the 4th high-frequency band pass filter circuit, institute The input for stating the 4th mixting circuit is connected with the output end of the second IF amplifier circuit, the output end of the 4th mixting circuit and the The input connection of three high-frequency band pass filter circuits, output end and the second radio frequency amplifying circuit of the 3rd high-frequency band pass filter circuit Input connection, the output end of the second radio frequency amplifying circuit is connected with the input of the 4th high-frequency band pass filter circuit, the 4th The output end of high-frequency band pass filter circuit is connected with transmitting terminal；Second local oscillator and another input of the 4th mixting circuit Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720714423.9U CN206807446U (en) | 2017-06-19 | 2017-06-19 | A kind of RF transceiver circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720714423.9U CN206807446U (en) | 2017-06-19 | 2017-06-19 | A kind of RF transceiver circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807446U true CN206807446U (en) | 2017-12-26 |
Family
ID=60747823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720714423.9U Expired - Fee Related CN206807446U (en) | 2017-06-19 | 2017-06-19 | A kind of RF transceiver circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206807446U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828476A (en) * | 2018-06-27 | 2018-11-16 | 重庆湃芯入微科技有限公司 | A kind of application of high frequency limiting circuit in hardware system |
-
2017
- 2017-06-19 CN CN201720714423.9U patent/CN206807446U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828476A (en) * | 2018-06-27 | 2018-11-16 | 重庆湃芯入微科技有限公司 | A kind of application of high frequency limiting circuit in hardware system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20180619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |