CN206835067U - A kind of Miniaturized multiband RDSS radio-frequency modules - Google Patents
A kind of Miniaturized multiband RDSS radio-frequency modules Download PDFInfo
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- CN206835067U CN206835067U CN201720762447.1U CN201720762447U CN206835067U CN 206835067 U CN206835067 U CN 206835067U CN 201720762447 U CN201720762447 U CN 201720762447U CN 206835067 U CN206835067 U CN 206835067U
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- intermediate frequency
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Abstract
The utility model discloses a kind of Miniaturized multiband RDSS radio-frequency modules, including receiving module and transmitter module；Receiving module includes the first bandpass filter, microwave low-noise amplifier, the first low-converter, the second low-converter, output low pass filter and the intermediate frequency amplifier being sequentially connected in series, and the output of intermediate frequency amplifier exports for the zero intermediate frequency of receiving module；Transmitter module includes ALC baseband amplifiers, the first low pass filter, the second low pass filter, the first upconverter, if bandpas filter, APC intermediate frequency amplifiers, the second upconverter, radio frequency band filter and the radio-frequency power amplifier being sequentially connected in series, and the output of radio-frequency power amplifier exports for the radiofrequency signal of transmitter module.The module can meet the high-performance of radio system, highly reliable, small size, the requirement of weak jamming using the mutually isolated design of transmitting-receiving two parts.
Description
Technical field
The utility model belongs to technical field of satellite communication, and in particular to a kind of Miniaturized multiband RDSS radio-frequency modules.
Background technology
Satellite transmission channel is a basicly stable passage, is influenceed in whole transmitting procedure by external environment change
Relatively small, transmission level changes typically at only several decibels to tens decibels (fine days).And terrestrial microwave transmission channel is by outer
The influence of the change of boundary's environment compares larger, and the change of transmission level can be large enough in tens of decibels.Satellite transmission need to pass through
Satellite repeater forwards, and the active transponder on satellite is a limited device of common source, so sts satellite transmission system is one
The individual constrained system restricted by space resources, the information long delay of satellite transmission is that have very much the transmission different from terrestrial microwave system
Feature.
Range measurement and position of the user to satellite calculate can not be by user itself complete independently, it is necessary to is led to by external system
The response of user is crossed to complete.RDSS (Radio Determination Satellite Service, satellite radio detection
Business) by user's response, while completing to position, the Subscriber Location Report to external system is completed, it is fixed also to realize
Position is integrated with communicating.
The overall feature of RDSS radio-frequency modules is shown as：Working signal frequency is high, narrow bandwidth, and circuit gain is high, easy self-excitation,
Powerful transmission signal easily produces various harmonic wave interferences and receiving portion especially B1, L1 frequency is caused to have a strong impact on.
For the most frequently used low noise microwave active device-GaAs field effect transistor, S-band is low-noise amplifier design
Difficult wave band.In this wave band, generally all in latent instability region, the low-noise amplifier to the wave band is set amplifier
Meter causes suitable difficulty.
Utility model content
Purpose of utility model：For problems of the prior art, the utility model discloses a kind of miniaturized multifrequency
Section RDSS radio-frequency modules, the module use the mutually isolated design of transmitting-receiving two parts, can meet the high property of radio system
Energy, highly reliable, small size, the requirement of weak jamming.
Technical scheme：The utility model adopts the following technical scheme that：
A kind of Miniaturized multiband RDSS radio-frequency modules, including receiving module and transmitter module；Wherein receiving module includes
The first bandpass filter (1), microwave low-noise amplifier (2), the first low-converter (3), the second low-converter being sequentially connected in series
(8) low pass filter (10) and intermediate frequency amplifier (11), are exported, the output of intermediate frequency amplifier (11) is the zero intermediate frequency of receiving module
Output；
Wherein the local oscillation signal of the first low-converter is provided by the first local vibration source (5), the local oscillation signal of the second low-converter
There is provided by the second local vibration source (7), the first local vibration source and the second local vibration source are passed through respectively by receiving terminal reference clock source (12) respectively
First frequency synthesizer of phase locking (4) and the second frequency synthesizer of phase locking (6) produce afterwards, and AGC control modules (9) are connected across zero intermediate frequency
Between output and the intermediate frequency amplifier of the second low-converter (8) input, AGC rings are formed；
Transmitter module includes ALC baseband amplifiers (13), the first low pass filter (14), the discharge circuit being sequentially connected in series
(28), the second low pass filter (15), the first upconverter (16), if bandpas filter (17), APC intermediate frequency amplifiers
(18), the second upconverter (19), radio frequency band filter (20) and radio-frequency power amplifier (21), radio-frequency power amplifier
(21) output exports for the radiofrequency signal of transmitter module；
Wherein the local oscillation signal of the first upconverter is provided by the 3rd local vibration source (22), the local oscillation signal of the second upconverter
There is provided by the 4th local vibration source (23), the 3rd local vibration source and the 4th local vibration source are passed through respectively by transmitting terminal reference clock source (26) respectively
3rd frequency synthesizer of phase locking (24) and the 4th frequency synthesizer of phase locking (25) produce afterwards.
The input signal of receiving module is interfered in order to avoid the high-power RF output signal of transmitter module, received
The receiving front-end of module also includes notch filter (27), and the notch filter is connected to the first bandpass filter (1) and micro-
Between ripple low-noise amplifier (2).
In order to reduce the volume of microwave band-pass filter, the dielectric material of the first bandpass filter (1) is normal using high dielectric
Several titanium oxide ceramics.
Operation principle：
Receiving module operation principle：The radiofrequency signal inputted by reception antenna first passes around the first bandpass filter and carried out
Radio frequency bandpass filtering, then amplify by microwave LNA；After filtering again, and the first local oscillator caused by frequency synthesizer of phase locking
Source signal enters the frequency that the first low-converter is mixed to the first local vibration source；Then after 90 degree of phase shift, into the second low-converter,
Downconvert to the frequency of the second local vibration source again, exported after the low pass signal filtering and intermediate frequency amplification after down coversion and give base band electricity
Road is handled.
Emitting portion operation principle：The signal of baseband circuit input first passes around low pass filter filtering and ALC base band is put
Big device amplification, after filtering again, and the 3rd local oscillator source signal caused by frequency synthesizer of phase locking is mixed into the first upconverter
Enter to the frequency of the 3rd local oscillator information source, after filtering the second upconverter again up-conversion to the 4th local vibration source frequency, on
Signal after frequency conversion is exported after radio frequency band filter to radio-frequency power amplifier, exports launch to transmitting antenna afterwards.
Beneficial effect：Compared with prior art, Miniaturized multiband RDSS radio-frequency modules disclosed in the utility model is excellent
Point is：1st, designed using transceiver module is androgynous, there is the advantages of integrated level is high, low in energy consumption；2nd, receiving module is set by trap
Meter avoids the interference of the high-power RF output signal of transmitter module, has the advantages of high-performance, highly reliable；3rd, microwave band-pass
Wave filter effectively reduces wave filter volume, and then reduce the volume of complete machine using the titanium oxide ceramics of high-k.
Brief description of the drawings
Fig. 1 is the receiving portion circuit composition frame chart of RDSS radio-frequency modules disclosed in the utility model；
Fig. 2 is the emitting portion circuit composition frame chart of RDSS radio-frequency modules disclosed in the utility model；
Fig. 3 is the receiving portion another kind circuit composition frame chart of RDSS radio-frequency modules disclosed in the utility model.
Embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate.
As shown in figure 1, be the receiving portion circuit composition frame chart of RDSS radio-frequency modules disclosed in the utility model, including according to
Under the low-noise amplifier of secondary series connection and the first bandpass filter 1, microwave low-noise amplifier 2, the first low-converter 3, second
Frequency converter 8, output low pass filter 10 and intermediate frequency amplifier 11, the output of intermediate frequency amplifier 11 are defeated for the zero intermediate frequency of receiving module
Go out.
Wherein the local oscillation signal of the first low-converter is provided by the first local vibration source 5, the local oscillation signal of the second low-converter by
Second local vibration source 7 provides, and the first local vibration source and the second local vibration source are respectively through the first lock respectively by receiving terminal reference clock source 12
Produced after the frequency synthesizer of phase locking 6 of phase frequency synthesizer 4 and second, AGC control modules 9 are connected across under zero intermediate frequency output and second
Between the intermediate frequency amplifier of the input of frequency converter 8, AGC rings are formed, the reference voltage of AGC rings is PAGC。
For receiving and dispatching same module, launch the powerful rf power signal broadcast TV programs by satellite and be easy to leak into by reception antenna and connect
Receive input.If this high reject signal can not be effectively filtered out, it will have a strong impact on the normal work of low-noise amplifier, very
Extremely burnt.The input signal of receiving module is interfered in order to avoid the high-power RF output signal of transmitter module,
The receiving front-end of receiving module also includes notch filter 27, and the notch filter is connected to the first bandpass filter 1 and micro-
Between ripple low-noise amplifier 2, as shown in Figure 3.
Because the wavelength of S-band is longer, if designed according to traditional microstrip filter, wave filter volume mistake can be caused
Greatly, so influence complete machine volume.To solve this problem, the dielectric material of the first bandpass filter 1 uses high-k
Titanium oxide ceramics, on the premise of performance of filter is ensured try one's best reduce volume.
As shown in Fig. 2 being the emitting portion circuit composition frame chart of RDSS radio-frequency modules disclosed in the utility model, launch mould
Block include be sequentially connected in series ALC baseband amplifiers 13, the first low pass filter 14, discharge circuit 28, the second low pass filter 15,
First upconverter 16, if bandpas filter 17, APC intermediate frequency amplifiers 18, the second upconverter 19, radio frequency band filter
20 and radio-frequency power amplifier 21, the output of radio-frequency power amplifier 21 exports for the radiofrequency signal of transmitter module.
Wherein the local oscillation signal of the first upconverter is provided by the 3rd local vibration source 22, the local oscillation signal of the second upconverter by
4th local vibration source 23 provides, and the 3rd local vibration source and the 4th local vibration source are respectively through the 3rd lock respectively by transmitting terminal reference clock source 26
Produced after the frequency synthesizer of phase locking 25 of phase frequency synthesizer 24 and the 4th.
Claims (3)
1. a kind of Miniaturized multiband RDSS radio-frequency modules, it is characterised in that including receiving module and transmitter module；
The receiving module includes the first bandpass filter (1), microwave low-noise amplifier (2), first time change being sequentially connected in series
Frequency device (3), the second low-converter (8), output low pass filter (10) and intermediate frequency amplifier (11), intermediate frequency amplifier (11) it is defeated
Go out the zero intermediate frequency output for receiving module；
Wherein the local oscillation signal of the first low-converter is provided by the first local vibration source (5), and the local oscillation signal of the second low-converter is by the
Two local vibration sources (7) provide, and the first local vibration source and the second local vibration source are respectively through first respectively by receiving terminal reference clock source (12)
Frequency synthesizer of phase locking (4) and the second frequency synthesizer of phase locking (6) produce afterwards, and AGC control modules (9) are connected across zero intermediate frequency output
And second low-converter (8) input intermediate frequency amplifier between；
The transmitter module includes ALC baseband amplifiers (13), the first low pass filter (14), the discharge circuit being sequentially connected in series
(28), the second low pass filter (15), the first upconverter (16), if bandpas filter (17), APC intermediate frequency amplifiers
(18), the second upconverter (19), radio frequency band filter (20) and radio-frequency power amplifier (21), radio-frequency power amplifier
(21) output exports for the radiofrequency signal of transmitter module；
Wherein the local oscillation signal of the first upconverter is provided by the 3rd local vibration source (22), and the local oscillation signal of the second upconverter is by
Four local vibration sources (23) provide, and the 3rd local vibration source and the 4th local vibration source are respectively through the 3rd respectively by transmitting terminal reference clock source (26)
Frequency synthesizer of phase locking (24) and the 4th frequency synthesizer of phase locking (25) produce afterwards.
2. Miniaturized multiband RDSS radio-frequency modules according to claim 1, it is characterised in that receiving module also includes falling into
Wave filter (27), the notch filter are connected between the first bandpass filter (1) and microwave low-noise amplifier (2).
3. Miniaturized multiband RDSS radio-frequency modules according to claim 1, it is characterised in that the first bandpass filter
(1) dielectric material is titanium oxide ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720762447.1U CN206835067U (en) | 2017-06-28 | 2017-06-28 | A kind of Miniaturized multiband RDSS radio-frequency modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720762447.1U CN206835067U (en) | 2017-06-28 | 2017-06-28 | A kind of Miniaturized multiband RDSS radio-frequency modules |
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| Publication Number | Publication Date |
|---|---|
| CN206835067U true CN206835067U (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720762447.1U Active CN206835067U (en) | 2017-06-28 | 2017-06-28 | A kind of Miniaturized multiband RDSS radio-frequency modules |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450479A (en) * | 2018-12-08 | 2019-03-08 | 武汉中科牛津波谱技术有限公司 | A kind of signal modulation module and method |
| CN109450479B (en) * | 2018-12-08 | 2024-04-26 | 武汉中科牛津波谱技术有限公司 | Signal modulation module and method |
-
2017
- 2017-06-28 CN CN201720762447.1U patent/CN206835067U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450479A (en) * | 2018-12-08 | 2019-03-08 | 武汉中科牛津波谱技术有限公司 | A kind of signal modulation module and method |
| CN109450479B (en) * | 2018-12-08 | 2024-04-26 | 武汉中科牛津波谱技术有限公司 | Signal modulation module and method |
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