CN207150589U - High isolation unjammable navigation radio-frequency module - Google Patents
High isolation unjammable navigation radio-frequency module Download PDFInfo
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- CN207150589U CN207150589U CN201721012541.1U CN201721012541U CN207150589U CN 207150589 U CN207150589 U CN 207150589U CN 201721012541 U CN201721012541 U CN 201721012541U CN 207150589 U CN207150589 U CN 207150589U
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Abstract
High isolation unjammable navigation radio-frequency module, including receiving circuit, radiating circuit, receiving circuit are provided with several receiving channels, and radiating circuit is provided with some transmission channels.Receiving channel includes limiter, bulk accoustic wave filter, low-noise amplifier, SAW filter, temperature compensation attenuating device, local oscillator and lower frequency changer circuit, LC filter and IF amplifier circuit.The input of high reject signal is limited by limiter from the radio-frequency input signals that antenna transmits, prevents high reject signal from damaging rear class device, protects late-class circuit；Frequency-selecting is carried out by bulk accoustic wave filter, frequency-selecting effect is more preferable, and small volume, easy to assembly；And to be temperature compensation adapt to for the effect of temperature compensation attenuating device, decay when passing through low temperature more, decay less during high temperature, ensure the uniformity of the gain output of amplified signal, improve adaptability of the anti-interference function in high and low temperature state.In addition, also if the dry units of inside modules and sub-circuit are separately encapsulated using shielding box, not only reduce microstrip line connecting length between device and sub-circuit, both assembling integrated level had been improved, and reduce invalid decay between signal and the microwave radiation outside transmitting procedure center line interior lines, reach more excellent high-isolation and anti-jamming effectiveness.
Description
Technical field
It the utility model is related to navigation radio-frequency module field, espespecially a kind of high isolation unjammable navigation radio-frequency module.
Background technology
Navigation radio-frequency module, which generally comprises, only receives the reception type navigation type do not sent out and reception and emission type.No matter which kind of
Type is all at least made up of in receiving channel two to three even more more receiving channels, is received due to multiple receiving channels
Signal is likely to be interference signal, and various channel radio frequency signals, local oscillator and frequency changer circuit are easily produced in inside modules and harassed；
And transmitting-receiving type navigation module, intermediate-freuqncy signal, radiofrequency signal, local oscillator and the frequency changer circuit of its transmission channel are also easy in inside modules
Interference is produced to receiving channel；Therefore the navigation radio-frequency module design of high-isolation, jamproof transmitting-receiving type is always realization in the industry
Difficult point, problem.
It is conventional, common it is higher every high and jamproof navigation radio-frequency module mainly in receiving channel, by multiple sound
It is surface wave filter, low-noise amplifier (several levels amplification is in its front and rear plus SAW filter), local oscillator and lower frequency changer circuit, multiple
Multiple discrete device compositions such as LC filter and intermediate frequency amplification；So, receiving circuit is caused by multistage, multiple device groups
Into making the circuit board and its structural volume and all larger but actual isolation and interference free performance of quality of such navigation module
It is and non-good.
The content of the invention
To solve the above problems, the utility model provides a kind of isolation and anti-interference is good, component integrated level is higher
High isolation unjammable navigation radio-frequency module.
To achieve the above object, the technical solution adopted in the utility model is：A kind of high isolation unjammable navigation radio frequency mould
Block, including receiving circuit, radiating circuit, the receiving circuit are provided with several receiving channels, and the radiating circuit is provided with some
Transmission channel.The receiving channel input is connected with antenna, and output end is connected with base band demodulating digital processing circuit；The hair
Penetrate path input to be connected with base-band modulated digital process circuit, output end is connected with antenna；The receiving channel includes amplitude limit
Device, bulk accoustic wave filter, low-noise amplifier, SAW filter, temperature compensation attenuating device, local oscillator and lower frequency changer circuit, LC filter
Ripple device and IF amplifier circuit, the limiter input connect antenna output end, and the limiter output connects bulk acoustic wave
Filter input end, the bulk accoustic wave filter output end connect low-noise amplifier input, and the low-noise amplifier is defeated
Go out end connection SAW filter input, the SAW filter output end connects temperature compensation attenuating device input, the temperature compensation
Attenuating device output end connects local oscillator and lower frequency changer circuit input, the local oscillator and the connection LC filter of lower frequency changer circuit output end
Ripple device input, the LC filter output end connect IF amplifier circuit input, the IF amplifier circuit output end
Connect base band demodulating digital processing circuit input.
Specifically, the radiating circuit is provided with two transmission channels, and the receiving circuit is provided with four receiving channels.
Specifically, in addition to some shielding boxs, the limiter, bulk accoustic wave filter, low-noise amplifier, sound table filter
Device and temperature compensation attenuating device are encapsulated in same shielding box, and the local oscillator and lower frequency changer circuit are encapsulated in same shielding box
Interior, the LC filter and IF amplifier circuit are encapsulated in same shielding box, and each shielding box is connected by microstrip line
Connect.
Specifically, the transmission channel includes the first amplifier, the second amplifier, local oscillator and up-converter circuit, the first filter
Ripple device, the second wave filter, the 3rd wave filter.The first amplifier in connection baseband modulation digital processing circuit output
End, first amplifier out connect the first filter input end, the first filter output connection local oscillator and on
Frequency changer circuit input, the local oscillator and up-converter circuit output end connect the second filter input end, second wave filter
Output end connects the input of the second amplifier, and second amplifier out connects the 3rd filter input end, and described the
Three filter outputs connect antenna input.
Specifically, in addition to some shielding boxs, first amplifier and the first filter package are in same shielding box
Interior, the local oscillator and up-converter circuit are encapsulated in same shielding box, second wave filter, the second amplifier and the 3rd filter
Ripple device is encapsulated in same shielding box.
The beneficial effects of the utility model are：The utility model receiving channel is except including low-noise amplifier, sound table
Wave filter, local oscillator and lower frequency changer circuit, LC filter and IF amplifier circuit, in addition to limiter, bulk accoustic wave filter and
Temperature compensation attenuating device.The input of high reject signal is limited by limiter from the radio-frequency input signals that antenna transmits, is prevented strong
Interference signal damages rear class device, protects late-class circuit；Frequency-selecting is carried out by bulk accoustic wave filter, frequency-selecting effect is more preferable, and body
Product is small, easy to assembly；And to be temperature compensation adapt to for the effect of temperature compensation attenuating device, decay when passing through low temperature more, decay less during high temperature, protect
The uniformity of the gain output of amplified signal is demonstrate,proved, improves adaptability of the anti-interference function in high and low temperature state.In addition, also by module
If internal dry units and sub-circuit are separately encapsulated using shielding box, not only reduce microstrip line between device and sub-circuit and connect
Length, assembling integrated level was both improved, and reduced invalid decay between signal and the microwave outside transmitting procedure center line interior lines
Radiation, reaches more excellent high-isolation and anti-jamming effectiveness.
Brief description of the drawings
Fig. 1 is the structural representation of this specific embodiment.
Fig. 2 is the structural representation of the utility model receiving channel.
Fig. 3 is the structural representation of the utility model transmission channel.
Drawing reference numeral explanation：1. receiving channel；11. limiter；12. bulk accoustic wave filter；13. low-noise amplifier；14.
SAW filter；15. temperature compensation attenuating device；16. LC filter；17. IF amplifier circuit；2. transmission channel；21. first puts
Big device；22. the second amplifier；23. the first wave filter；24. the second wave filter；25. the 3rd wave filter；3. at base-band modulated digital
Manage circuit；4. local oscillator and lower frequency changer circuit；5. base band demodulating digital processing circuit；6. local oscillator and up-converter circuit.
Embodiment
Refer to shown in Fig. 1-2, the utility model is on a kind of high isolation unjammable navigation radio-frequency module, including receives electricity
Road, radiating circuit.The receiving circuit is provided with several receiving channels 1, and the radiating circuit is provided with some transmission channels 2.Institute
State the input of receiving channel 1 to be connected with antenna, output end is connected with base band demodulating digital processing circuit；The transmission channel 2 is defeated
Enter end to be connected with base-band modulated digital process circuit, output end is connected with antenna；The receiving channel 1 includes limiter 11, body
Acoustic wave filter 12, low-noise amplifier 13, SAW filter 14, temperature compensation attenuating device 15, local oscillator and lower frequency changer circuit 4, sense
Capacitor filter device 16 and IF amplifier circuit 17.The input of limiter 11 connects antenna output end, and the limiter 11 exports
The end connection input of bulk accoustic wave filter 12, the output end of bulk accoustic wave filter 12 connect the input of low-noise amplifier 13,
The output end of low-noise amplifier 13 connects the input of SAW filter 14, and the output end of SAW filter 14 connects temperature compensation
The input of attenuating device 15, the output end of the temperature compensation attenuating device 15 connection local oscillator and the input of lower frequency changer circuit 4, the local oscillator
And the output end of the lower frequency changer circuit 4 connection input of LC filter 16, the output end of the LC filter 16 connection intermediate frequency amplification
The input of circuit 17, the output end of IF amplifier circuit 17 connect base band demodulating digital processing circuit input.
Compared with prior art, the utility model receiving channel 1 is except including low-noise amplifier 13, SAW filter
14th, local oscillator and lower frequency changer circuit 4, LC filter 16 and IF amplifier circuit 17, in addition to limiter 11, bulk accoustic wave filter
12 and temperature compensation attenuating device 15, limit the defeated of high reject signal from the radio-frequency input signals that antenna transmits by limiter 11
Enter, prevent high reject signal from damaging rear class device, protect late-class circuit；Frequency-selecting, frequency-selecting effect are carried out by bulk accoustic wave filter 12
Fruit is more preferable, and small volume, easy to assembly；And the effect of temperature compensation attenuating device 15 is temperature compensation adaptation, decay when passing through low temperature more,
Decay less during high temperature, ensure the uniformity of the gain output of amplified signal, improve adaptation of the anti-interference function in high and low temperature state
Property.If in addition, also separately encapsulating the dry units of inside modules and sub-circuit using shielding box, not only reduce microstrip line line
Length, assembling integrated level is improved, also reduce the microwave radiation outside invalid decay and online interior lines between signal, reach more excellent
High-isolation and anti-jamming effectiveness.
Specifically, the radiating circuit is provided with two transmission channels 2, and the receiving circuit is provided with four receiving channels 1.
Specifically, in addition to some shielding boxs, the limiter 11, bulk accoustic wave filter 12, low-noise amplifier 13, sound
Table wave filter 14 and temperature compensation attenuating device 15 are encapsulated in same shielding box, and the local oscillator and lower frequency changer circuit 4 are encapsulated in together
In one shielding box, the LC filter 16 and IF amplifier circuit 17 are encapsulated in same shielding box, and each shielding
Box is connected by microstrip line.
Specifically, refer to shown in Fig. 3, the transmission channel 2 includes the first amplifier 21, the second amplifier 22, local oscillator
And up-converter circuit 6, the first wave filter 23, the second wave filter 24, the 3rd wave filter 25.The input of first amplifier 21 connects
Base-band modulated digital process circuit output end is connect, the output end of the first amplifier 21 connects the input of the first wave filter 23, institute
The output end of the first wave filter 23 connection local oscillator and the input of up-converter circuit 6 are stated, the local oscillator and the output end of up-converter circuit 6 connect
Connecing the input of the second wave filter 24, the output end of the second wave filter 24 connects the input of the second amplifier 22, and described second
The output end of amplifier 22 connects the input of the 3rd wave filter 25, and the output end of the 3rd wave filter 25 connects antenna input.
Specifically, in addition to some shielding boxs, the wave filter 23 of the first amplifier 21 and first are encapsulated in same screen
Cover in box, the local oscillator and up-converter circuit 6 are encapsulated in same shielding box, second wave filter 24, the second amplifier
22 and the 3rd wave filter 25 be encapsulated in same shielding box.
The utility model is further described below by specific embodiment.
This specific embodiment navigation radio-frequency module is made up of receiving circuit and radiating circuit two-way, and receiving circuit is connect by four
Receive passage 1 to form, radiating circuit is made up of two transmission channels 2；Four road radio-frequency input signals of navigation radio-frequency module come from day
Line, two-way radio frequency output signal will deliver to antenna；Four road intermediate frequency outputs of navigation radio-frequency module will be reached at base band demodulating numeral
Manage circuit 5；The two-way intermediate frequency input of navigation module comes from base-band modulated digital process circuit 3.
Wherein, receiving circuit is made up of four structures and the identical receiving channel 1 of circuit, the electricity of each receiving channel 1
Road design is to realize the core and key of " high isolation, anti-interference ".Receiving channel 1 receive from antenna end be transmitted through come radio frequency it is defeated
Enter signal and be introduced into limiter 11；The input of high reject signal, protection late-class circuit are limited by limiter 11, prevented capable and experienced
Disturb signal corruption rear class device.The output of limiter 11 terminates to the input of bulk accoustic wave filter 12, the output end of body acoustic filter 12
It is connected to the input of low-noise amplifier 13, the output termination input of SAW filter 14 of low-noise amplifier 13.SAW filter
The input of 14 output termination temperature compensation attenuating device 15, the output of temperature compensation attenuating device 15 termination local oscillator and the input of lower frequency changer circuit 4,
Local oscillator and the output termination input of LC filter 16 of lower frequency changer circuit 4.The output termination IF amplifier circuit of LC filter 16
17 inputs.The output end of IF amplifier circuit 17 enters the base band demodulating digital processing circuit 5 of this module-external, the mould of the part again
Block circuit has been not belonging to this module, but its effect is to carry out the conversion of analog signal and data signal, the base band of data signal
Demodulation, the processing of data signal.Wherein, the effect of local oscillator and lower frequency changer circuit 4 is to provide local oscillator reference signal, and by radio frequency
Analog signal down-converts to analog if signal；The effect of LC filter 16 is to filter out radiofrequency signal, local oscillation signal and humorous miscellaneous
Ripple signal, useful intermediate frequency simulation signal is only allowed to pass through；The effect of IF amplifier circuit 17 is the useful intermediate frequency simulation letter of amplification
Number.
Radiating circuit is made up of two structures and the identical transmission channel 2 of circuit.Adjusted from the base band of this module-external
Digital processing circuit 3 processed be transmitted through come intermediate frequency analog input signal, by the first amplifier 21, the first wave filter 23, local oscillator and
Up-converter circuit 6, the second wave filter 24, the second amplifier 22, the 3rd wave filter 25, amplified signal is finally sent be handed to outside module
Antenna.Wherein, local oscillator and the effect of up-converter circuit 6 are to provide local oscillator reference signal, and by analog if signal up-conversion
For radio frequency analog signal.
This specific embodiment will be instead of with the frivolous metal shielding box of small size weight used in original structural member it is big and
The parting bead of less effective and the quantity for reducing fixing screws.By greatly reduce the microstrip line wire length between bare chip, come
The microwave radiation outside invalid decay and online interior lines between signal is reduced, along with independent shielding box, achieves this programme
Turn the more excellent high-isolation of traditional scheme and Geng Gao anti-jamming effectiveness.
The project demands of the visual client of this specific embodiment use the microwave assembly technology of two kinds of different integrated levels：Suitable for height
Performance, micro-volume, the high integration microwave assembly technology of high price, and suitable for take into account economy, micro-volume, high performance-price ratio
Middle integrated level packaging technology.If certain receiving circuit is changed into three, five, six, eight receiving channels etc., radiating circuit
It is changed into three, four etc. transmission channels etc., the accommodation for falling within this programme is applicable category.In addition, local oscillator and up-converter circuit 6,
Local oscillator and lower frequency changer circuit 4, can be by the way of each passage be individually matched, i.e., each receiving channel 1 and transmission channel 2 are used
One local oscillator and frequency changer circuit, six transceiver channels 1 are i.e. with six sets of local oscillators and frequency changer circuit；Such as in order to take into account economy and it is low into
This, can also use multiple passages, share a set of local oscillator and up-converter circuit 6, a set of local oscillator and lower frequency changer circuit 4, and each transmitting-receiving is logical
Road uses the shunting sign by local oscillator and frequency variation signal.
Embodiment of above is only that preferred embodiment of the present utility model is described, not to the utility model
Scope be defined, on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff to this
The various modifications and improvement that the technical scheme of utility model is made, the guarantor that claims of the present utility model determine all should be fallen into
In the range of shield.
Claims (5)
1. a kind of high isolation unjammable navigation radio-frequency module, including receiving circuit, radiating circuit, the receiving circuit is provided with some
Individual receiving channel, the radiating circuit are provided with some transmission channels；The receiving channel input is connected with antenna, output end with
Base band demodulating digital processing circuit connects；The transmission channel input is connected with base-band modulated digital process circuit, output end
It is connected with antenna；It is characterized in that：The receiving channel includes limiter, bulk accoustic wave filter, low-noise amplifier, the filter of sound table
Ripple device, temperature compensation attenuating device, local oscillator and lower frequency changer circuit, LC filter and IF amplifier circuit, the limiter input
Antenna output end is connected, the limiter output connects bulk accoustic wave filter input, the bulk accoustic wave filter output end
Low-noise amplifier input is connected, the low-noise amplifier output end connects SAW filter input, the sound table filter
Ripple device output end connects temperature compensation attenuating device input, and the temperature compensation attenuating device output end connection local oscillator and lower frequency changer circuit are defeated
Enter end, the local oscillator and lower frequency changer circuit output end connection LC filter input, the LC filter output end connection
IF amplifier circuit input, the IF amplifier circuit output end connect base band demodulating digital processing circuit input.
A kind of 2. high isolation unjammable navigation radio-frequency module according to claim 1, it is characterised in that：The radiating circuit
Provided with two transmission channels, the receiving circuit is provided with four receiving channels.
A kind of 3. high isolation unjammable navigation radio-frequency module according to claim 1, it is characterised in that：Also include some screens
Box is covered, the limiter, bulk accoustic wave filter, low-noise amplifier, SAW filter and temperature compensation attenuating device are encapsulated in same
In individual shielding box, the local oscillator and lower frequency changer circuit are encapsulated in same shielding box, LC filter and the intermediate frequency amplification
Circuit package is in same shielding box, and each shielding box is connected by microstrip line.
A kind of 4. high isolation unjammable navigation radio-frequency module according to claim 1, it is characterised in that：The transmission channel
Including the first amplifier, the second amplifier, local oscillator and up-converter circuit, the first wave filter, the second wave filter, the 3rd wave filter；
First amplifier in connects baseband modulation digital processing circuit output end, the first amplifier out connection the
One filter input end, the first filter output connection local oscillator and up-converter circuit input, the local oscillator and upper change
Frequency circuit output end connects the second filter input end, and second filter output connects the input of the second amplifier,
Second amplifier out connects the 3rd filter input end, and the 3rd filter output connects antenna input.
A kind of 5. high isolation unjammable navigation radio-frequency module according to claim 4, it is characterised in that：Also include some screens
Box is covered, first amplifier and the first filter package are in same shielding box, the local oscillator and up-converter circuit encapsulation
In same shielding box, second wave filter, the second amplifier and the 3rd filter package are in same shielding box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012541.1U CN207150589U (en) | 2017-08-14 | 2017-08-14 | High isolation unjammable navigation radio-frequency module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012541.1U CN207150589U (en) | 2017-08-14 | 2017-08-14 | High isolation unjammable navigation radio-frequency module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207150589U true CN207150589U (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721012541.1U Expired - Fee Related CN207150589U (en) | 2017-08-14 | 2017-08-14 | High isolation unjammable navigation radio-frequency module |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037949A (en) * | 2018-08-01 | 2018-12-18 | 湖南迈克森伟电子科技有限公司 | It is anti-to burn anti-interference antenna equipment |
| CN110108966A (en) * | 2019-05-31 | 2019-08-09 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Radiation effect test board, system, the method and device for obtaining connection line length |
| CN111884725A (en) * | 2020-07-24 | 2020-11-03 | 中国电子科技集团公司第三十四研究所 | Multipurpose broadband intelligent radio frequency photoelectric integrated transmitting and receiving assembly |
| WO2021232523A1 (en) * | 2020-05-21 | 2021-11-25 | 深圳市知用电子有限公司 | Isolated signal transmission apparatus |
| CN114783167A (en) * | 2022-04-19 | 2022-07-22 | 赵德群 | Based on LED display screen intelligence remote control device |
-
2017
- 2017-08-14 CN CN201721012541.1U patent/CN207150589U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037949A (en) * | 2018-08-01 | 2018-12-18 | 湖南迈克森伟电子科技有限公司 | It is anti-to burn anti-interference antenna equipment |
| CN109037949B (en) * | 2018-08-01 | 2021-02-12 | 湖南迈克森伟电子科技有限公司 | Anti-burnout and anti-interference antenna equipment |
| CN110108966A (en) * | 2019-05-31 | 2019-08-09 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Radiation effect test board, system, the method and device for obtaining connection line length |
| CN110108966B (en) * | 2019-05-31 | 2021-05-11 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Radiation effect test board, radiation effect test system, method and device for obtaining length of connecting line |
| WO2021232523A1 (en) * | 2020-05-21 | 2021-11-25 | 深圳市知用电子有限公司 | Isolated signal transmission apparatus |
| US11881639B2 (en) | 2020-05-21 | 2024-01-23 | Shenzhen Zhiyong Electronics Co., Ltd. | Signal isolation and transmission device |
| CN111884725A (en) * | 2020-07-24 | 2020-11-03 | 中国电子科技集团公司第三十四研究所 | Multipurpose broadband intelligent radio frequency photoelectric integrated transmitting and receiving assembly |
| CN111884725B (en) * | 2020-07-24 | 2024-05-28 | 中国电子科技集团公司第三十四研究所 | Multipurpose broadband intelligent radio frequency photoelectric integrated transmitting and receiving assembly |
| CN114783167A (en) * | 2022-04-19 | 2022-07-22 | 赵德群 | Based on LED display screen intelligence remote control device |
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