CN203896455U - Circuit structure of satellite low noise block - Google Patents
Circuit structure of satellite low noise block Download PDFInfo
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- CN203896455U CN203896455U CN201420287881.5U CN201420287881U CN203896455U CN 203896455 U CN203896455 U CN 203896455U CN 201420287881 U CN201420287881 U CN 201420287881U CN 203896455 U CN203896455 U CN 203896455U
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Abstract
The utility model discloses a circuit structure of a satellite low noise block, which comprises the components of: an antenna which is used for receiving satellite signals, a radio frequency amplifier which is connected with the antenna, a thin-film chamber sound wave radio frequency filter, a frequency mixer, a local oscillator and an intermediate-frequency amplifier. The thin-film chamber sound wave radio frequency filter is connected with the radio frequency amplifier and the frequency mixer. The local oscillator is connected with the frequency mixer. The intermediate frequency amplifier is connected with the frequency mixer. The circuit structure of the satellite low noise block provided by the utility model has functions of: realizing high stability and low energy consumption, greatly reducing integral dimension of the product and reducing manual operation cost.
Description
Technical field
The utility model relates to technical field of satellite communication, especially relates to a kind of satellite low noise block circuit structure.
Background technology
LNB is again tuner (Low Noise Block), it is low noise block downconverter, its function is that the satellite-signal process being transmitted by feed is amplified and down-conversion, and Ka, Ku, S or C-band signal are become to mf band 250～2250MHz, through coaxial cable, sends satellite receiver to.LNB is comprised of LNB and LNC, and LNC consists of frequency mixer, local oscillator.Because satellite signals higher signal loss of frequency quite faint and coaxial cable transmission before arriving at antenna is larger, so just need LNB to come frequency reducing to amplify again, can't worsen too much signal to noise ratio simultaneously.The workflow of LNB is exactly first satellite high-frequency signals to be amplified, recycling mixting circuit is converted to 250MHz-2150MHz (determining intermediate frequency range according to LNB kind) intermediate frequency amplification again by high-frequency signals, is beneficial to the transmission of coaxial cable and the demodulation of rear end.
Existing satellite low noise block (LNB) main circuit will be divided into high-frequency RF part and medium-frequency IF part, and wherein high-frequency RF part basic framework comprises radio frequency amplifier, radio-frequency filter, frequency mixer and local oscillator.
Existing market field main flow has two kinds of local oscillations sources: the one, and applicating medium resonator (DR) is made oscillating circuit; Utilize dielectric resonator to make oscillating circuit because its product performance size of dielectric resonator large (C-band, ku wave band) and temperature are floated characteristic, need to be coupled; And need to carry out regulating frequency by screw, expend a large amount of artificial; The 2nd, single-chip utilizes PLL to make oscillating circuit.Single-chip scheme utilizes crystal resonator to make oscillating circuit, because of its product power consumption stream, and the reasons such as phase noise and the integration of high-order machine, LNB market at a low price can not satisfy the demands.It is little that FBAR resonator and FBAR oscillator have size, high stability, and without manual debugging, cost is low, conformability advantages of higher.
At present, the mirror filter of radio frequency is mainly realized by pcb board, but has following shortcoming: Q value is low; Size is large; Ability is made by pcb board manufacturer directly affects yield; It is high that FBAR has consistency, and size is little, is not subject to the advantages such as pcb board material affects.
And medium-frequency IF filter or frequency mixer component frequency are output as 46-2150MHz interval, existing market adopts respectively following 3 kinds of schemes to realize, and one utilizes LTCC (LTCC) device to realize, but cost is high, and size is large, and Q value is not high; It two utilizes surface acoustic wave (SAW) device to realize, but cost is high, and reflection loss is large, and frequency has the problem of yield higher than 2GHz; It three utilizes capacitor and inductor and transmission line to be combined in the circuit board filter to realize, but it is not high to have consistency, needs manual debugging, area is large wait not enough.FBAR intermediate-frequency filter does not have above-mentioned shortcoming.
Utility model content
The purpose of this utility model is to provide a kind of satellite low noise block circuit structure, and its stability is high, and energy consumption is little, can significantly reduce the overall dimensions of product and reduce manual work cost.
For realizing above-mentioned utility model object, the utility model adopts following technical scheme:
A kind of satellite low noise block circuit structure, comprise the antenna for receiving satellite signals, the radio frequency amplifier that is connected in described antenna, membrane well sound wave radio-frequency filter, frequency mixer, local oscillator and intermediate frequency amplifier, described membrane well sound wave radio-frequency filter is connected in described radio frequency amplifier and frequency mixer, described local oscillator is connected in described frequency mixer, and described intermediate frequency amplifier is connected in described frequency mixer.
Further, in above-mentioned satellite low noise block circuit structure, described membrane well sound wave radio-frequency filter is that membrane well acoustic wave filter is applied in satellite low noise block circuit as radio-frequency filter or mirror filter.
Further, in above-mentioned satellite low noise block circuit structure, described local oscillator is that membrane well acoustic wave oscillator or film bulk acoustic resonator device combine.
Further, in above-mentioned satellite low noise block circuit structure, described intermediate frequency amplifier comprises intermediate frequency front-end amplifier and intermediate frequency backend amplifier, described satellite low noise block circuit structure also comprises membrane well sound wave intermediate-frequency filter, described intermediate frequency front-end amplifier is connected in described frequency mixer and membrane well sound wave intermediate-frequency filter, and described intermediate frequency backend amplifier is connected in described membrane well sound wave intermediate-frequency filter.
Further, in above-mentioned satellite low noise block circuit structure, described satellite low noise block circuit structure also comprises intermediate frequency front-end amplifier, intermediate frequency backend amplifier and shift frequency Phase Lock Loop IC, described intermediate frequency front-end amplifier is connected in described frequency mixer and shift frequency Phase Lock Loop IC, described membrane well sound wave intermediate-frequency filter is connected in shift frequency Phase Lock Loop IC, and described intermediate frequency backend amplifier is connected in described shift frequency Phase Lock Loop IC.
Further, in above-mentioned satellite low noise block circuit structure, described satellite low noise block circuit structure also comprises PCB radio-frequency filter, intermediate frequency front-end amplifier, membrane well sound wave intermediate-frequency filter and intermediate frequency backend amplifier, described membrane well sound wave radio-frequency filter is connected in described PCB filter and frequency mixer, described intermediate frequency front-end amplifier is connected in described frequency mixer and membrane well sound wave intermediate-frequency filter, described membrane well sound wave intermediate-frequency filter is connected in intermediate frequency backend amplifier, and described intermediate frequency backend amplifier is connected in described membrane well sound wave intermediate-frequency filter.
Further, in above-mentioned satellite low noise block circuit structure, described membrane well sound wave intermediate-frequency filter is that membrane well acoustic wave filter is applied in satellite low noise block circuit as intermediate-frequency filter.
The utility model satellite low noise block circuit structure stability is high, and energy consumption is little, has significantly reduced the overall dimensions of product, has reduced manual work cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model satellite low noise block circuit structure the first embodiment;
Fig. 2 is the schematic diagram of the utility model satellite low noise block circuit structure the second embodiment;
Fig. 3 is the schematic diagram of the utility model satellite low noise block circuit structure the 3rd embodiment;
Fig. 4 is the schematic diagram of the utility model satellite low noise block circuit structure the 4th embodiment;
Fig. 5 is the schematic diagram of the utility model satellite low noise block circuit structure the 5th embodiment;
Fig. 6 is the schematic diagram of the utility model satellite low noise block circuit structure the 6th embodiment;
Fig. 7 is the schematic diagram of the utility model satellite low noise block circuit structure the 7th embodiment;
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.In accompanying drawing, provided preferred embodiment of the present utility model.But the utility model can be realized in many different forms, be not limited to embodiment described herein.On the contrary, providing the object of these embodiment is to make to the understanding of disclosure of the present utility model more thoroughly comprehensively.
Refer to Fig. 1, Fig. 1 is single-ended satellite low noise block circuit structure, it comprises the antenna 11 for receiving satellite signals, the radio frequency amplifier 12 that is connected in described antenna 11, membrane well sound wave (FBAR) radio-frequency filter 13, frequency mixer 14, local oscillator 15 and intermediate frequency amplifier 16, described membrane well sound wave (FBAR) radio-frequency filter 13 is connected in described radio frequency amplifier 12 and frequency mixer 14, described local oscillator 15 is connected in described frequency mixer 14, and described intermediate frequency amplifier 16 is connected in described frequency mixer 14.
Wherein, described membrane well sound wave radio-frequency filter 13 is applied in satellite low noise block circuit as radio-frequency filter (or mirror filter) for film bulk acoustic resonator device (FBAR), and described local oscillator 15 combines (local oscillator) for membrane well sound wave (FBAR) oscillator or membrane well sound wave (FBAR) resonator.
The present embodiment Satellite high frequency tuner circuit structure working principle is as follows:
Satellite signals receive by amplifying signal by radio frequency amplifier 12 through antenna 11, again via after the unwanted radio-frequency (RF) signal of membrane well sound wave (FBAR) radio-frequency filter 13 filtering, the frequency down circuit forming via frequency mixer 14 and local oscillator 15 is reduced to intermediate frequency signal, finally by amplifying signal by intermediate frequency amplifier 16.
Refer to Fig. 2, Fig. 2 is another satellite low noise block circuit (LNB) structure, it comprises for receiving the antenna 21 of satellite signals, be connected in the radio frequency amplifier 22 of described antenna 21, membrane well sound wave (FBAR) radio-frequency filter 23, frequency mixer 24, local oscillator 25, intermediate frequency front-end amplifier 26, membrane well sound wave intermediate-frequency filter 27 and intermediate frequency backend amplifier 28, described membrane well sound wave (FBAR) radio-frequency filter 23 is connected in described radio frequency amplifier 22 and frequency mixer 24, described local oscillator 25 is connected in described frequency mixer 24, described intermediate frequency front-end amplifier 26 is connected in described frequency mixer 24 and membrane well sound wave intermediate-frequency filter 27, described intermediate frequency backend amplifier 28 is connected in described membrane well sound wave intermediate-frequency filter 27.
Wherein, described membrane well sound wave (FBAR) radio-frequency filter 23 is applied in satellite low noise block circuit as radio-frequency filter (or mirror filter) for membrane well sound wave (FBAR) filter, the oscillator application that described local oscillator 25 combines for membrane well sound wave (FBAR) oscillator or membrane well sound wave (FBAR) resonator in satellite low noise block circuit as local oscillator; Described membrane well sound wave intermediate-frequency filter 27 is applied in satellite low noise block circuit as intermediate-frequency filter for film bulk acoustic resonator device (FBAR).
The present embodiment Satellite high frequency tuner circuit structure working principle is as follows:
Satellite signals receive by amplifying signal by radio frequency amplifier 22 through antenna 21, again via after the unwanted radio-frequency (RF) signal of membrane well sound wave (FBAR) radio-frequency filter 23 filtering, the frequency down circuit forming via frequency mixer 24 and local oscillator 25 is reduced to intermediate frequency signal, via intermediate frequency front-end amplifier 26, amplify, via the unwanted intermediate frequency signal of membrane well sound wave intermediate-frequency filter 27 filtering, then amplify signal via intermediate frequency backend amplifier 28.
Refer to Fig. 3, Fig. 3 is another satellite low noise block (LNB) circuit structure, it comprises for receiving the antenna 31 of satellite signals, be connected in the radio frequency amplifier 32 of described antenna 31, membrane well sound wave (FBAR) radio-frequency filter 33, frequency mixer 34, local oscillator 35, intermediate frequency front-end amplifier 36, shift frequency Phase Lock Loop IC 37, membrane well sound wave intermediate-frequency filter 38 and intermediate frequency backend amplifier 39, described membrane well sound wave (FBAR) radio-frequency filter 33 is connected in described radio frequency amplifier 32 and frequency mixer 34, described local oscillator 35 is connected in described frequency mixer 34, described intermediate frequency front-end amplifier 36 is connected in described frequency mixer 34 and shift frequency Phase Lock Loop IC 37, described membrane well sound wave intermediate-frequency filter 38 is connected in shift frequency Phase Lock Loop IC 37, described intermediate frequency backend amplifier 39 is connected in described shift frequency Phase Lock Loop IC 37.
Wherein, described membrane well sound wave radio-frequency filter 33 is membrane well sound wave (FBAR) filter for satellite low noise block circuit as radio-frequency filter (or mirror filter), the oscillator application that described local oscillator 35 combines for membrane well sound wave (FBAR) oscillator or membrane well sound wave (FBAR) resonator in satellite low noise block circuit as local oscillator; Described membrane well sound wave (FBAR) intermediate-frequency filter 38 is applied in satellite low noise block circuit as intermediate-frequency filter for membrane well sound wave (FBAR) filter.
The present embodiment Satellite high frequency tuner circuit structure working principle is as follows:
Satellite signals receive by amplifying signal by radio frequency amplifier 32 through antenna 31, again via after the unwanted radio-frequency (RF) signal of membrane well sound wave (FBAR) radio-frequency filter 33 filtering, the frequency down circuit forming via frequency mixer 34 and local oscillator 35 is reduced to intermediate frequency signal, via intermediate frequency front-end amplifier 36, amplify, again via shift frequency phase-locked loop 37 raising frequencies or frequency reducing signal to required frequency, via frequency-selecting, selecting special frequency channel signal amplifies, again via the unwanted intermediate frequency signal of membrane well sound wave intermediate-frequency filter 38 filtering, finally by being amplified by intermediate frequency backend amplifier 39, (actual use is multiband, need shift frequency Phase Lock Loop IC 37 by by mixer by each frequency range signal He Wei mono-road signal, via intermediate frequency backend amplifier 39, amplify again).
Refer to Fig. 4, Fig. 4 is another satellite low noise block (LNB) circuit structure, it comprises for receiving the antenna 41 of satellite signals, be connected in the radio frequency amplifier 42 of described antenna 41, PCB radio-frequency filter 43, membrane well sound wave (FBAR) radio-frequency filter 44, frequency mixer 46, local oscillator 45, intermediate frequency front-end amplifier 47, membrane well sound wave intermediate-frequency filter 48 and intermediate frequency backend amplifier 49, described membrane well sound wave (FBAR) radio-frequency filter 44 is connected in described PCB filter 43 and frequency mixer 46, described local oscillator 45 is connected in described frequency mixer 46, described intermediate frequency front-end amplifier 47 is connected in described frequency mixer 46 and membrane well sound wave (FBAR) intermediate-frequency filter 48, described membrane well sound wave intermediate-frequency filter 48 is connected in intermediate frequency backend amplifier 47, described intermediate frequency backend amplifier 49 is connected in described membrane well sound wave (FBAR) intermediate-frequency filter 48.
The present embodiment Satellite high frequency tuner circuit structure working principle is as follows:
Satellite signals receive by amplifying signal by radio frequency amplifier 42 through antenna 41, again via after pcb board filter 43 and the unwanted radio-frequency (RF) signal of membrane well sound wave (FBAR) radio-frequency filter 44 filtering, the frequency down circuit forming via frequency mixer 46 and local oscillator 45 is reduced to intermediate frequency signal, via intermediate frequency front-end amplifier 47, amplify, via the unwanted intermediate frequency signal of membrane well sound wave (FBAR) intermediate-frequency filter 48 filtering, then amplify signal via intermediate frequency backend amplifier 49.
Refer to Fig. 5, Fig. 5 is another satellite low noise block circuit structure, it comprises the antenna 51 for receiving satellite signals, the radio frequency amplifier 52 that is connected in described antenna 51, membrane well sound wave (FBAR) radio-frequency filter 53, self-vibration frequency mixer (SOM) 54 and intermediate frequency amplifier 55, described membrane well sound wave (FBAR) radio-frequency filter 53 is connected in described radio frequency amplifier 52 and self-vibration frequency mixer (SOM) 54, and described intermediate frequency amplifier 55 is connected in described self-vibration frequency mixer (SOM) 54.
Wherein, described membrane well sound wave radio-frequency filter 53 is applied in satellite low noise block circuit as radio-frequency filter (or mirror filter) for membrane well sound wave (FBAR) filter, and described self-vibration frequency mixer (som) 54 forms for membrane well sound wave (FBAR) oscillator or membrane well sound wave (FBAR) resonator and mixer combination.
The present embodiment Satellite high frequency tuner circuit structure working principle is as follows:
Satellite signals receive by amplifying signal by radio frequency amplifier 52 through antenna 51, again via after the unwanted radio-frequency (RF) signal of membrane well sound wave (FBAR) radio-frequency filter 53 filtering, the frequency down circuit forming via frequency mixer 14 and local oscillator 15 is reduced to intermediate frequency signal, finally by amplifying signal by intermediate frequency amplifier 55.
Refer to Fig. 6, Fig. 6 is another satellite low noise block circuit structure, it comprises for receiving the antenna 611 of satellite signals, 612, be connected in the radio frequency amplifier 621 of described antenna, 622, membrane well sound wave (FBAR) radio-frequency filter 63, self-vibration frequency mixer (SOM) 64 and intermediate frequency amplifier 65, described membrane well sound wave (FBAR) radio-frequency filter 63 is connected in described radio frequency amplifier 621,622 and self-vibration frequency mixer (SOM) 64, and described intermediate frequency amplifier 65 is connected in described self-vibration frequency mixer (SOM) 64.
Wherein, described membrane well sound wave radio-frequency filter 63 is applied in satellite low noise block circuit as radio-frequency filter (or mirror filter) for membrane well sound wave (FBAR) filter, and described self-vibration frequency mixer (SOM) 64 forms for membrane well sound wave (FBAR) oscillator or membrane well sound wave (FBAR) resonator and mixer combination.
The present embodiment Satellite high frequency tuner circuit structure working principle is as follows:
Satellite signals amplify signal via radio frequency amplifier 621 and 622 respectively respectively after antenna 611,612 receives, again via after the unwanted radio-frequency (RF) signal of membrane well sound wave (FBAR) radio-frequency filter 63 filtering, via self-vibration frequency mixer (SOM) 64, reduce to intermediate frequency signal, finally by amplifying signal by intermediate frequency amplifier 65.
Refer to Fig. 7, Fig. 7 is another satellite low noise block circuit structure, it comprises for receiving the antenna 711 of satellite signals, 712, be connected in the radio frequency amplifier 721 of described antenna, 722, membrane well sound wave (FBAR) radio-frequency filter 731, 732, radio frequency amplifier 741, 742, pcb board filter 75, membrane well sound wave (FBAR) radio-frequency filter 76, self-vibration frequency mixer (SOM) 77 and intermediate frequency amplifier 78, described membrane well sound wave (FBAR) radio-frequency filter 731 is connected in described radio frequency amplifier 721 and radio frequency amplifier 741, described membrane well sound wave (FBAR) radio-frequency filter 732 is connected in described radio frequency amplifier 722 and radio frequency amplifier 742, described membrane well sound wave (FBAR) radio-frequency filter 76 is connected in described pcb board filter 75 and self-vibration frequency mixer (SOM) 77, described intermediate frequency amplifier 65 is connected in described self-vibration frequency mixer (SOM) 64.
Wherein, described membrane well sound wave radio-frequency filter 731,732,76 is applied in satellite low noise block circuit as radio-frequency filter (or mirror filter) for membrane well sound wave (FBAR) filter, and described self-vibration frequency mixer (SOM) 64 forms for membrane well sound wave (FBAR) oscillator or membrane well sound wave (FBAR) resonator and mixer combination.
The present embodiment Satellite high frequency tuner circuit structure working principle is as follows:
Satellite signals amplify signal via radio frequency amplifier 721 and 722 respectively respectively after antenna 711,712 receives, again respectively via after the unwanted radio-frequency (RF) signal of membrane well sound wave (FBAR) radio-frequency filter 731,732 filtering, via radio frequency amplifier, amplify signal again via after membrane well sound wave (FBAR) radio-frequency filter 75 and the unwanted radiofrequency signal of pcb board filter 76 filtering respectively again, via self-vibration frequency mixer (SOM) 77, reduce to intermediate frequency signal, finally by amplifying signal by intermediate frequency amplifier 78.
It should be noted that, above-mentioned membrane well sound wave radio-frequency filter, membrane well intermediate-frequency filter, film bulk acoustic resonator device, membrane well acoustic wave oscillator are all based on FBAR technology, and the filter based on FBAR technology, resonator, oscillator are called FBAR filter, FBAR resonator, FBAR oscillator.The name that FBAR translates is at home called membrane well sound wave, film bulk acoustic, film bulk acoustic resonator device etc.
Than prior art, the utility model is applied to the family devices such as membrane well sound wave (FBAR) resonator, oscillator, filter, duplexer in satellite low noise block circuit structure, FBAR is than traditional resonator, filter, mixer, can significantly reduce the overall dimensions of product, reduce manual work cost, and stability is high, energy consumption is little.
FBAR applies and can be divided into high-frequency RF part and medium-frequency IF part on LNB:
One, for high-frequency RF part
1, FBAR resonator and oscillator have following advantage:
A, employing FBAR resonator are made oscillating circuit compared to the existing dielectric resonator of existing market, FBAR resonator has smaller szie (2.0mm*1.25mm or 1.6*0.8mm or 1.0mm*0.5mm) S-Band C-Band Ku-Band size can be unified for same size, and dielectric resonator C-band is of a size of 11.3*11.3 at present; Ku4.8*4.8) be 1/10～1/20 of existing size;
B, FBAR resonator, because frequency accuracy is high, does not need manually by adjustment screw, to carry out regulating frequency, thereby significantly reduce manufacturing cost;
C, with respect to the LNB that utilizes PLL oscillating circuit, it is little that FBAR product has more size, stability is high, power consumption is little and be applicable at a low price LNB.
2, FBAR filter has the features such as consistency is high, size is little with respect to existing PCB filter.
Two,, for medium-frequency IF part, FBAR filter and duplexer have following advantage:
Compared to the SAW (Surface Acoustic Wave) device of current employing, FBAR filter has high the inhibition, filter with low insertion loss, and the features such as good temp characteristic, can significantly improve complete machine characteristic; Compared to the dielectric device of current employing, it is little that FBAR filter has size, and the feature having suppressed is more conducive to make.
The utility model satellite low noise block circuit structure stability is high, and energy consumption is little, has significantly reduced the overall dimensions of product, has reduced manual work cost.
Here description of the present utility model and application is illustrative, not wants by scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and for those those of ordinary skill in the art, the various parts of the replacement of embodiment and equivalence are known.Those skilled in the art are noted that in the situation that not departing from spirit of the present utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realizes with other assembly, material and parts.In the situation that not departing from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (7)
1. a satellite low noise block circuit structure, it is characterized in that, comprise the antenna for receiving satellite signals, the radio frequency amplifier that is connected in described antenna, membrane well sound wave radio-frequency filter, frequency mixer, local oscillator and intermediate frequency amplifier, described membrane well sound wave radio-frequency filter is connected in described radio frequency amplifier and frequency mixer, described local oscillator is connected in described frequency mixer, and described intermediate frequency amplifier is connected in described frequency mixer.
2. satellite low noise block circuit structure according to claim 1, is characterized in that, described radio-frequency filter is that membrane well acoustic wave filter is applied in satellite low noise block circuit as radio-frequency filter or mirror filter.
3. satellite low noise block circuit structure according to claim 2, is characterized in that, described local oscillator is that membrane well acoustic wave oscillator or film bulk acoustic resonator device combine.
4. satellite low noise block circuit structure according to claim 3, it is characterized in that, described intermediate frequency amplifier comprises intermediate frequency front-end amplifier and intermediate frequency backend amplifier, described satellite low noise block circuit structure also comprises membrane well sound wave intermediate-frequency filter, described intermediate frequency front-end amplifier is connected in described frequency mixer and membrane well sound wave intermediate-frequency filter, and described intermediate frequency backend amplifier is connected in described membrane well sound wave intermediate-frequency filter.
5. satellite low noise block circuit structure according to claim 3, it is characterized in that, described satellite low noise block circuit structure also comprises intermediate frequency front-end amplifier, intermediate frequency backend amplifier and shift frequency Phase Lock Loop IC, described intermediate frequency front-end amplifier is connected in described frequency mixer and shift frequency Phase Lock Loop IC, described membrane well sound wave intermediate-frequency filter is connected in shift frequency Phase Lock Loop IC, and described intermediate frequency backend amplifier is connected in described shift frequency Phase Lock Loop IC.
6. satellite low noise block circuit structure according to claim 3, it is characterized in that, described satellite low noise block circuit structure also comprises PCB radio-frequency filter, intermediate frequency front-end amplifier, membrane well sound wave intermediate-frequency filter and intermediate frequency backend amplifier, described membrane well sound wave radio-frequency filter is connected in described PCB filter and frequency mixer, described intermediate frequency front-end amplifier is connected in described frequency mixer and membrane well sound wave intermediate-frequency filter, described membrane well sound wave intermediate-frequency filter is connected in intermediate frequency backend amplifier, described intermediate frequency backend amplifier is connected in described membrane well sound wave intermediate-frequency filter.
7. according to the satellite low noise block circuit structure described in claim 4 or 5 or 6, it is characterized in that, described membrane well sound wave intermediate-frequency filter is that membrane well acoustic wave filter is applied in satellite low noise block circuit as intermediate-frequency filter.
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| CN201420287881.5U CN203896455U (en) | 2014-06-03 | 2014-06-03 | Circuit structure of satellite low noise block |
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| CN201420287881.5U CN203896455U (en) | 2014-06-03 | 2014-06-03 | Circuit structure of satellite low noise block |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454469A (en) * | 2016-11-01 | 2017-02-22 | 李燕如 | LNB module with transverse antenna |
| CN106488200A (en) * | 2016-08-05 | 2017-03-08 | 深圳市平方兆赫科技有限公司 | A kind of high frequency tuner circuit and tuner |
| CN106533494A (en) * | 2016-12-22 | 2017-03-22 | 华讯方舟科技（湖北）有限公司 | Microwave frequency converter and microwave frequency conversion circuit thereof |
| CN108736902A (en) * | 2017-04-17 | 2018-11-02 | 东莞百电子有限公司 | A kind of novel combination S frequency ranges and KU frequency range tuners |
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2014
- 2014-06-03 CN CN201420287881.5U patent/CN203896455U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488200A (en) * | 2016-08-05 | 2017-03-08 | 深圳市平方兆赫科技有限公司 | A kind of high frequency tuner circuit and tuner |
| CN106488200B (en) * | 2016-08-05 | 2019-06-18 | 深圳市平方兆赫科技有限公司 | A kind of high frequency tuner circuit and tuner |
| CN106454469A (en) * | 2016-11-01 | 2017-02-22 | 李燕如 | LNB module with transverse antenna |
| CN106533494A (en) * | 2016-12-22 | 2017-03-22 | 华讯方舟科技（湖北）有限公司 | Microwave frequency converter and microwave frequency conversion circuit thereof |
| CN106533494B (en) * | 2016-12-22 | 2019-05-03 | 华讯方舟科技（湖北）有限公司 | A kind of microwave converter and its microwave frequency changer circuit |
| CN108736902A (en) * | 2017-04-17 | 2018-11-02 | 东莞百电子有限公司 | A kind of novel combination S frequency ranges and KU frequency range tuners |
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