CN208836139U - C-band transmitting-receiving subassembly - Google Patents
C-band transmitting-receiving subassembly Download PDFInfo
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- CN208836139U CN208836139U CN201821828439.3U CN201821828439U CN208836139U CN 208836139 U CN208836139 U CN 208836139U CN 201821828439 U CN201821828439 U CN 201821828439U CN 208836139 U CN208836139 U CN 208836139U
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Abstract
The utility model discloses a kind of C-band transmitting-receiving subassemblies, it is made of transmitting unit and receiving unit, wherein transmitting unit and receiving unit are isolated by radiofrequency signal of the duplexer to received radiofrequency signal and transmitting, intermediate-freuqncy signal is upconverted to radiofrequency signal by up-conversion twice and launched by transmitting unit, and the radiofrequency signal received is down-converted to intermediate-freuqncy signal output by down coversion twice by receiving unit；The local oscillation signal of second of up-conversion of transmitting unit and the local oscillation signal of receiving unit first time down coversion come from same RF local oscillator, i.e. transmitting unit and receiving unit shares same RF local oscillator.The utility model is by receiving unit and transmitting unit together as one, receiving unit and transmitting unit shared radio frequency local oscillator, it is all made of double conversion scheme, has the characteristics that good receive-transmit isolation, highly sensitive, high-gain, low-noise factor, big transmission power, is with a wide range of applications.
Description
Technical field
The utility model belongs to technology for radio frequency field, and in particular to a kind of C-band transmitting-receiving subassembly.
Background technique
Subsystem of the transmitting-receiving subassembly as communication equipment, be radar, navigation, communication system important component.With logical
The continuous development of letter technology, the requirement to transmitting-receiving subassembly are higher and higher.Miniaturization, low-power consumption, high sensitivity, high-gain, big hair
Penetrating power etc. becomes transmitting-receiving in the development trend of integral component.
Utility model content
The utility model technical issues that need to address are to provide good a kind of receive-transmit isolation, highly sensitive, high-gain, low
The C-band transmitting-receiving subassembly of noise coefficient.
To solve the above problems, technical solution adopted in the utility model is:
A kind of C-band transmitting-receiving subassembly, is made of transmitting unit and receiving unit, and wherein transmitting unit and receiving unit pass through
The radiofrequency signal of received radiofrequency signal and transmitting is isolated in duplexer, and transmitting unit is believed intermediate frequency by up-conversion twice
It number upconverts to radiofrequency signal and launches, the radiofrequency signal received is down-converted to by receiving unit by down coversion twice
Intermediate-freuqncy signal output；The local oscillation signal of second of up-conversion of transmitting unit and the local oscillation signal of receiving unit first time down coversion
From same RF local oscillator, i.e. transmitting unit and receiving unit shares same RF local oscillator.
Further, the intermediate frequency local oscillator signal of the transmitting unit and the intermediate frequency local oscillator signal of receiving unit respectively from
Two integrated PLL chips, integrated PLL chip are controlled by single-chip microcontroller.
Further, receiving unit is equipped with voltage-controlled attenuator, voltage-controlled attenuator and coupler, wave detector, operational amplifier
Automatic gain control circuit is formed, the signal that intermediate-freuqncy signal is coupled out through coupler is after wave detector, the electricity of detecting signal size
Pressure inputs voltage-controlled attenuator after operational amplifier, realizes automatic growth control.
Further, transmitting unit is equipped with voltage-controlled attenuator, voltage-controlled attenuator and coupler, wave detector, operational amplifier
Automatic gain control circuit is formed, the signal that the radiofrequency signal after second of up-conversion is coupled out through coupler is through wave detector
Afterwards, the voltage of detecting signal size inputs voltage-controlled attenuator after operational amplifier, realizes automatic growth control.
Further, the receiving unit includes sequentially connected duplexer, isolator, low-noise amplifier, band logical filter
Wave device, amplifier, frequency mixer, filter, amplifier, voltage-controlled attenuator, attenuator, filter, frequency mixer, attenuator, amplification
Device, filter, coupler, radiofrequency signal first enter isolator through duplexer, enter low-noise amplifier later, pass through low noise
Amplifier monitoring reception tiny signal simultaneously amplifies, after by band-pass filter, amplification, into frequency mixer, carry out for the first time
Down coversion carries out second of down coversion, the intermediate-freuqncy signal after frequency conversion is through declining then through filter and amplification, voltage-controlled decaying, attenuation filter
Subtract, amplify, filtering, coupling output.
Further, the transmitting unit includes sequentially connected attenuator, voltage-controlled attenuator, attenuator, amplifier, filter
Wave device, frequency mixer, attenuator, amplifier, filter, amplifier, filter, frequency mixer, bandpass filter, amplifier, power
Amplifier, isolator, duplexer, intermediate-freuqncy signal enter frequency mixer after overdamping, voltage-controlled decaying, decaying, amplification, filtering, into
Row first time up-conversion carries out second of up-conversion, intermediate-freuqncy signal is upconverted to and is penetrated by two-stage amplification filtering after decaying
Frequency signal, by band-pass filter, amplifier amplification, power amplifier amplification, isolator isolation, duplexer filtering every
From finally emission of radio frequency signals is gone out.
The beneficial effects of adopting the technical scheme are that
The utility model is by receiving unit and transmitting unit together as one, receiving unit and transmitting unit shared radio frequency sheet
Vibration, is all made of double conversion scheme, good, highly sensitive, high-gain, low-noise factor, big transmission power with receive-transmit isolation
The features such as, it is with a wide range of applications.
Detailed description of the invention
Fig. 1 is the utility model principle block diagram.
Specific embodiment
Utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, the utility model is made of transmitting unit and receiving unit, wherein transmitting unit and receiving unit are logical
It crosses duplexer the radiofrequency signal of received radiofrequency signal and transmitting is isolated, transmitting unit will by up-conversion twice
70MHz intermediate-freuqncy signal upconverts to radiofrequency signal and launches, and receiving unit passes through the radio frequency that down coversion will receive twice
Signal is down-converted to the output of 70MHz intermediate-freuqncy signal；The local oscillation signal and receiving unit first of second of up-conversion of transmitting unit
The local oscillation signal of secondary down coversion comes from same RF local oscillator, i.e. transmitting unit and receiving unit shares same RF local oscillator.It is described
The intermediate frequency local oscillator signal of transmitting unit and the intermediate frequency local oscillator signal of receiving unit are integrated respectively from two integrated PLL chips
PLL chip is controlled by single-chip microcontroller.
In order to guarantee that the dynamic range of receiving unit is not less than 25dB, while try 70MHz intermediate-freuqncy signal in temperature environment
Output amplitude is more stable when testing.The receiving unit is equipped with voltage-controlled attenuator, voltage-controlled attenuator and coupler, wave detector, fortune
It calculates amplifier and forms automatic gain control circuit, the signal that intermediate-freuqncy signal is coupled out through coupler is after wave detector, detecting signal
The voltage of size inputs voltage-controlled attenuator after operational amplifier, realizes automatic growth control.
For the stability for guaranteeing transmitting signal amplitude, transmitting unit is equipped with voltage-controlled attenuator (being located on radio frequency link), pressure
Control attenuator and coupler (using strip line coupler), wave detector, operational amplifier form automatic gain control circuit, through the
The signal that radiofrequency signal after secondary up-conversion is coupled out through coupler is after wave detector, and the voltage of detecting signal size is through operation
Voltage-controlled attenuator is inputted after amplifier, realizes automatic growth control.
The receiving unit includes sequentially connected duplexer, isolator, low-noise amplifier, bandpass filter, amplification
Device, frequency mixer, filter, amplifier, voltage-controlled attenuator, attenuator, filter, frequency mixer, attenuator, amplifier, filter,
Coupler, the received radiofrequency signal of receiving unit initially enter isolator after duplexer, enter low-noise amplifier afterwards, lead to
Cross low-noise amplifier monitoring reception tiny signal and amplify, after by band-pass filter, amplifier amplification, into mixing
Device carries out first time down coversion, inhibits spuious after frequency conversion, devises dual stage filter, for the dynamic model for realizing receiving unit
It encloses index Design and is mounted with voltage-controlled attenuator, the signal after frequency conversion carries out second through filter and amplification, voltage-controlled decaying, attenuation filter
Secondary down coversion is converted to 70MHz intermediate-freuqncy signal through attenuator, amplifier, filter, coupler and most after being mixed for the second time
Output eventually.The voltage of the signal being coupled out detecting signal size after wave detector, inputs voltage-controlled attenuator after operational amplifier,
Gain Automatic control system is formed, ensure that the dynamic range of receiving unit is not less than 25dB, while making intermediate-freuqncy signal in temperature
Output amplitude is more stable when environmental test.
The transmitting unit includes sequentially connected attenuator, voltage-controlled attenuator, attenuator, amplifier, filter, mixing
Device, attenuator, amplifier, filter, amplifier, filter, frequency mixer, bandpass filter, amplifier, power amplifier, every
From device, duplexer, transmitting unit first passes through attenuator decaying to the intermediate-freuqncy signal of input, voltage-controlled attenuator is decayed, attenuator declines
Subtract, amplifier amplification, enter frequency mixer after filter filtering, carry out first time up-conversion, inhibits spuious after frequency conversion and equally adopts
Filtered with dual stage filter, after by level-one attenuator decaying and dual-stage amplifier be amplified into second of up-conversion, pass through
Cross second of up-conversion, intermediate-freuqncy signal upconverted to radiofrequency signal, by bandpass filter, amplifier, power amplifier, every
From device, duplexer, finally emission of radio frequency signals is gone out.For the stability for guaranteeing transmitting signal amplitude, adopted on radio frequency link
With strip line coupler, the signal being coupled out controls voltage-controlled attenuator after wave detector, operational amplifier, forms Gain Automatic control
System processed improves transmitting unit stability.
The utility model is C-band signal receiving unit and transmitting unit in the component of one, utilizes duplexer and isolation
Device has carried out effective isolation to transmitting-receiving, and isolation reaches 110dB or more.Transmitting unit is to improve transmission power, final power
Amplifier is exported using high P-1, and high-gain power tube makes component transmission power reach 1W or more.The amplification of the receiving unit first order
The device low noise very low using noise, guarantees the low-noise factor of entire receiving unit, entire receives link is put using high-gain
Big device guarantees receiving unit high sensitivity, the performance of high-gain.To sum up the present invention is high with receive-transmit isolation, transmission power is big,
The advantages such as receiving sensitivity height, high gain, noise coefficient be low.
Claims (6)
1.C wave band transmitting-receiving subassembly, it is characterised in that: be made of transmitting unit and receiving unit, wherein transmitting unit and reception are single
Member is isolated by radiofrequency signal of the duplexer to received radiofrequency signal and transmitting, and transmitting unit will by up-conversion twice
Intermediate-freuqncy signal upconverts to radiofrequency signal and launches, and receiving unit is by the way that down coversion will be under the radiofrequency signal that received twice
It is converted to intermediate-freuqncy signal output；The local oscillation signal of second of up-conversion of transmitting unit and the sheet of receiving unit first time down coversion
The signal that shakes comes from same RF local oscillator, i.e. transmitting unit and receiving unit shares same RF local oscillator.
2. C-band transmitting-receiving subassembly according to claim 1, it is characterised in that: the intermediate frequency local oscillator signal of the transmitting unit
And the intermediate frequency local oscillator signal of receiving unit, respectively from two integrated PLL chips, integrated PLL chip is controlled by single-chip microcontroller.
3. C-band transmitting-receiving subassembly according to claim 1 or 2, it is characterised in that: receiving unit is equipped with voltage-controlled attenuator,
Voltage-controlled attenuator and coupler, wave detector, operational amplifier form automatic gain control circuit, and intermediate-freuqncy signal is coupled through coupler
For signal out after wave detector, the voltage of detecting signal size inputs voltage-controlled attenuator after operational amplifier, realizes automatic increase
Benefit control.
4. C-band transmitting-receiving subassembly according to claim 1 or 2, it is characterised in that: transmitting unit is equipped with voltage-controlled attenuator,
Voltage-controlled attenuator and coupler, wave detector, operational amplifier form automatic gain control circuit, penetrating after second of up-conversion
After wave detector, the voltage of detecting signal size inputs voltage-controlled the signal that frequency signal is coupled out through coupler after operational amplifier
Attenuator realizes automatic growth control.
5. C-band transmitting-receiving subassembly according to claim 3, it is characterised in that: the receiving unit includes sequentially connected
Duplexer, isolator, low-noise amplifier, bandpass filter, amplifier, frequency mixer, filter, amplifier, voltage-controlled attenuator,
Attenuator, filter, frequency mixer, attenuator, amplifier, filter, coupler, radiofrequency signal first enter isolation through duplexer
Device, later enter low-noise amplifier, by low-noise amplifier monitoring reception tiny signal and amplify, after by bandpass filtering
Device filtering is amplified, into frequency mixer, is carried out first time down coversion, then through filter and amplification, voltage-controlled decaying, attenuation filter, is carried out
Second of down coversion, the intermediate-freuqncy signal after frequency conversion are exported through decaying, amplification, filtering, coupling.
6. C-band transmitting-receiving subassembly according to claim 4, it is characterised in that: the transmitting unit includes sequentially connected
Attenuator, voltage-controlled attenuator, attenuator, amplifier, filter, frequency mixer, attenuator, amplifier, filter, amplifier, filter
Wave device, frequency mixer, bandpass filter, amplifier, power amplifier, isolator, duplexer, intermediate-freuqncy signal is through overdamping, voltage-controlled
Into frequency mixer after decaying, decaying, amplification, filtering, first time up-conversion is carried out, amplifies filtering by two-stage after decaying, into
Intermediate-freuqncy signal, is upconverted to radiofrequency signal by second of up-conversion of row, by band-pass filter, amplifier amplification, power
Amplifier amplification, isolator isolation, duplexer filtering isolation, finally go out emission of radio frequency signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821828439.3U CN208836139U (en) | 2018-11-07 | 2018-11-07 | C-band transmitting-receiving subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821828439.3U CN208836139U (en) | 2018-11-07 | 2018-11-07 | C-band transmitting-receiving subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208836139U true CN208836139U (en) | 2019-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821828439.3U Expired - Fee Related CN208836139U (en) | 2018-11-07 | 2018-11-07 | C-band transmitting-receiving subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208836139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115514388A (en) * | 2022-09-14 | 2022-12-23 | 南京德睿智芯电子科技有限公司 | C-band frequency conversion transceiving method |
-
2018
- 2018-11-07 CN CN201821828439.3U patent/CN208836139U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115514388A (en) * | 2022-09-14 | 2022-12-23 | 南京德睿智芯电子科技有限公司 | C-band frequency conversion transceiving method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190507 Termination date: 20211107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |