CN206136105U - Weak signal area special KU frequency channel dual -port output tuner - Google Patents
Weak signal area special KU frequency channel dual -port output tuner Download PDFInfo
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- CN206136105U CN206136105U CN201621153261.8U CN201621153261U CN206136105U CN 206136105 U CN206136105 U CN 206136105U CN 201621153261 U CN201621153261 U CN 201621153261U CN 206136105 U CN206136105 U CN 206136105U
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- frequency
- amplifier
- signal
- mixer
- intermediate frequency
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Abstract
The utility model discloses a weak signal area special KU frequency channel dual -port output tuner relates to satellite signal reception equipment technical field. Processing circuit includes signal reception's feed, a low -noise amplifier, the 2nd low -noise amplifier, two distributors of the first high -frequency signal, the 2nd high frequency signal two distributors, a band pass filter, the 2nd band pass filter, the 3rd band pass filter, fourth band pass filter, first first detector, the second first detector, the third first detector, the fourth first detector, first IF amplifier, the second IF amplifier, the third IF amplifier, the fourth IF amplifier, first medium oscillator, second medium oscillator, matrix switch, the 5th IF amplifier, the 6th IF amplifier. Through changing processing circuit, increase enlarging function, reduction noise to the weak signal, improve isolation characteristic, and then improved the rating quality in weak signal area.
Description
Technical field
The utility model is related to satellite signal receiving equipment technical field, more particularly to a kind of special KU frequencies in weak signal area
Section dual-port output high frequency tuner.
Background technology
With the development of Global Satellite industry and opening gradually for China's direct broadcasting satellite policy, China's direct broadcasting satellite market
Demand will steeply rise, and satellite reception is in full flourish in the whole world, therefore satellite television receiving equipment is needed in the face of global complicated many
Impact of the weather conditions and satellite-signal of change in local intensity.Satellite audiovisual reception system commonly used in the prior art be all by
Parabola antenna, tuner, the satellite earth receiving station of the complete set of digital satellite receiver composition.Because satellite audiovisual is passed
Send and use microwave, with optical alignment propagation characteristic, for C frequency ranges and Ku frequency ranges, generally using with very highly directive
Parabola antenna, the effect of antenna will be converged to from aerial satellite-signal energy reflection using the principle of geometric optics
In focus, the electric wave signal conduction for being intended to reception by the feed in focus is conveyed to tuner immediately after, tuner
Effect be that the small-signal for receiving on antenna is amplified.
In the intensive serious interference of the satellites such as South America, Southeast Asia, signal is very weak and be the area of tropical rainy climate, when this
When just very weak electromagnetic wave passes through the region of rainfall, rain not only absorbs radio wave energy, moreover it is possible to produce scattering to electric wave.KU wave bands frequency
Rate higher (12GHz-18GHz), being declined by rain affects than more serious.Therefore requirement of these areas to receiving device is very high, but
What the way for being to increase antenna size to improve signal receiving strength was faced with is being significantly increased for material cost.
In traditional direct broadcasting satellite (DBS) is installed, in signal is weaker, rain declines stronger area, mainly by increasing offset-fed
Antenna, the size of Prime Focus Antenna increasing signal receiving area, so as to improve signal receiving quality.Define the KU of multiple caliber
Band satellite reception antenna, specification species is various from 30CM to 150CM for family expenses antenna size, but antenna is limited to scantling and gets over
Big cost is higher, and the increase of antenna can only improve signal strength signal intensity, and the noise and isolation interference to weak signal improves little, whole
The paid effect of body is not still good.And traditional tuner is extremely difficult to higher water in noise, frequency multiplication, three parameters of isolation
It is flat, and reception of these three parameters on weak signal affects very big.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of special KU frequency ranges dual-port output in weak signal area
Tuner, by changing signal processing circuit, increases the enlarging function to weak signal, reduces noise, improves isolation characteristic, and then
Improve the rating quality in weak signal area.
To solve above-mentioned technical problem, technical solution adopted in the utility model is：A kind of regional special KU of weak signal
Frequency range dual-port output high frequency tuner, the tuner is arranged between antenna and DVB, including shell, is set on the shell
Have two output interfaces, inside the shell is provided with signal processing circuit, the signal processing circuit include the feed that signal receives, first
Low-noise amplifier, the second low-noise amplifier, the distributor of the first high-frequency signal two, the distributor of the second high-frequency signal two, first
Bandpass filter, the second bandpass filter, the 3rd bandpass filter, the 4th bandpass filter, the first frequency mixer, the second mixing
Device, three-mixer, the 4th frequency mixer, the first intermediate frequency amplifier, the second intermediate frequency amplifier, the 3rd intermediate frequency amplifier, in the 4th
Audio amplifier, first medium oscillator, second medium oscillator, matrix switch, the 5th intermediate frequency amplifier, the 6th intermediate frequency amplify
Device, is separately installed with horizontal polarization and vertical polarization signal probe in the feed, the vertical polarization signal probe will be received
Vertical polarization signal export two-way Jing after the first low-noise amplifier, the distributor of the first high-frequency signal two, Jing first bands all the way
Send the first input end of matrix switch, the bands of another Lu Jing tri- after bandpass filter, the first frequency mixer, the first intermediate frequency amplifier to
Send the 3rd input of matrix switch after bandpass filter, three-mixer, the 3rd intermediate frequency amplifier to；The horizontal polarization letter
The horizontal polarization signals of reception are exported two-way by number probe Jing after the second low-noise amplifier, the distributor of the second high-frequency signal two,
Send the second input of matrix switch to Jing after the second bandpass filter, the second frequency mixer, the second intermediate frequency amplifier all the way, separately
Send the 4th input of matrix switch to Jing after the 4th bandpass filter, the 4th frequency mixer, the 4th intermediate frequency amplifier all the way；Institute
State two output ends difference intermediate frequency amplifiers of Jing the 5th, the output of the 6th intermediate frequency amplifier of matrix switch, first frequency mixer
First medium oscillator is shared with the second frequency mixer, the three-mixer and the 4th frequency mixer share second medium oscillator.
Further the technical scheme of optimization is that first low-noise amplifier and the second low-noise amplifier adopt three
The low-noise amplifier composition that level is connected in series.
Further the technical scheme of optimization is the horizontal polarization signals probe and vertical polarization signal probe in the feed
It is in mutually 90 degree.
Further the technical scheme of optimization is that the medium that the first medium oscillator is local frequency 9.75GHz vibrates
Device.
Further the technical scheme of optimization is that the medium that the second medium oscillator is local frequency 10.6GHz vibrates
Device.
It is using the beneficial effect produced by above-mentioned technical proposal：The utility model to signal processing circuit by making an uproar
The design and matching of the module parameters such as sound, gain, isolation, frequency multiplication, realize weak signal area, environment complex area can
High-quality satellite-signal is received, its low-noise amplifier is respectively adopted the amplifier composition of thtee-stage shiplock connection, to polarization letter
Number it is amplified, relative low side band-pass filter of frequency band and all the way is connected to behind every distributor of road high-frequency signal two
The relatively high-end bandpass filter in road；To provide satisfactory follow-up mixing interface level and inband flatness, mirror image suppression is improved
System ratio, it is ensured that spectral purity；The setting of intermediate frequency amplifier, can Shi Ge roads signal can distribute enough level and satisfactory
Carrier-to-noise ratio；The utility model simple structure, low manufacture cost, signal quality are good, it is adaptable to the weaker area of satellite-signal.
Description of the drawings
Fig. 1 is the utility model circuit theory diagrams.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
As shown in figure 1, the utility model discloses a kind of special KU frequency ranges dual-port output high frequency tuner in weak signal area, is somebody's turn to do
Tuner is arranged between antenna and DVB, including shell, and the shell is provided with two output interfaces, and inside the shell sets
There is signal processing circuit, the signal processing circuit includes feed, the first low-noise amplifier 11, the second low noise that signal is received
Acoustic amplifier 12, the distributor 21 of the first high-frequency signal two, the distributor 21 of the second high-frequency signal two, the first bandpass filter 31,
Two band-pass filter 32, the 3rd bandpass filter 33, the 4th bandpass filter 34, the first frequency mixer 41, the second frequency mixer 42,
Three-mixer 43, the 4th frequency mixer 44, the first intermediate frequency amplifier 61, the second intermediate frequency amplifier 62, the 3rd intermediate frequency amplifier 63,
Four intermediate frequency amplifiers 64, first medium oscillator 51, second medium oscillator 52, matrix switch 71, the 5th intermediate frequency amplifier 81,
6th intermediate frequency amplifier 82, is separately installed with horizontal polarization signals probe 102 and vertical polarization signal probe in the feed
101, vertical polarization signal Jing the first low-noise amplifiers 11, the first high frequency that the vertical polarization signal probe 101 will be received
Two-way is exported after the distributor 21 of signal two, all the way Jing the first bandpass filters 31, the first frequency mixer 41, the first intermediate frequency amplifier 61
Send the first input end of matrix switch 71, the bandpass filters 33, three-mixer 43 of another Lu Jing tri-, the 3rd intermediate frequency to afterwards
Send the 3rd input of matrix switch 71 after amplifier 63 to；The level pole that the horizontal polarization signals probe 102 will be received
Change signal and export two-way Jing after the second low-noise amplifier 12, the distributor 22 of the second high-frequency signal two, all the way the filter of the band logicals of Jing second
Send the second input of matrix switch 71, another Lu Jing after ripple device 32, the second frequency mixer 42, the second intermediate frequency amplifier 62 to
Send the 4th input of matrix switch 71 after four bandpass filters 34, the 4th frequency mixer 44, the 4th intermediate frequency amplifier 64 to；Institute
Two output ends for stating matrix switch 71 are distinguished the intermediate frequency amplifiers 81 of Jing the 5th, the 6th intermediate frequency amplifier 82 and are exported, and described first
The frequency mixer 42 of frequency mixer 41 and second shares first medium oscillator 51, and the frequency mixer 44 of the three-mixer 43 and the 4th is shared
Second medium oscillator 52.
Wherein, the first low-noise amplifier 11 and the second low-noise amplifier 12 are using the low noise of thtee-stage shiplock connection
Amplifier is constituted, and using the best components and parts NE3512 of noise, NE3513 designs matching and debugging by circuit makes whole machine NF substantially excellent
In conventional high frequency head, with suitable for weak signal area；Two-way low frequency bandpass filter 31,32 connects below frequency mixer 41,42, it
Have shared local frequency 9.75GHz first medium oscillator 51 be connected.Two-way high freguency bandpass filter 33,34
They have a shared local frequency 10.6GHz second medium oscillator 52 to be connected to connect frequency mixer 43,44 below.This shakes
Circuit is swung using ceramic dielectric oscillator, amplifier tube model NE5508, circuit design local frequency temperature characteristic of floaing has reached very
Outstanding ± 1MHz (- 30 DEG C～60 DEG C).
Four frequency mixers 41,42,43,44 connect respectively intermediate frequency amplifier 61,62,63,64 all the way, amplifier cast below
Number it is DS2715L, the output signal of first via intermediate frequency amplifier 61 is using local frequency 9.75GHz vertical polarization intermediate frequency letter
Number, the signal of No. second intermediate frequency amplifier output is using the water grade intermediate-freuqncy signal of local frequency 9.75GHz, in the 3rd tunnel
The output signal of audio amplifier is that, using the vertical polarization intermediate-freuqncy signal of local frequency 10.6GHz, No. fourth intermediate frequency amplifier is defeated
The signal for going out is using the water grade intermediate-freuqncy signal of local frequency 10.6GHz；Intermediate frequency amplifier is set, can Shi Ge roads signal
Can the enough level of distribution and satisfactory carrier-to-noise ratio.Around four frequency mixers and amplifier tube, both increase suction ripple blob of viscose and come
Anti- stop signal overflows the frequency multiplication for interfering with each other row.
Four tunnel four that model D8001 is provided with behind the intermediate frequency amplifier of above-mentioned No. four is input into two output matrixes switch 71, square
Four inputs of battle array switch 71 correspond to respectively four kinds of satellite intermediate frequency signals.Two output ends of matrix switch 71 are right respectively
Intermediate frequency amplifier 81,82 all the way should be connected, amplifier tube model DS2709L, each output port can independently poise four kinds of satellites
Intermediate-freuqncy signal system one is exported, and is respectively connecting to two DVBs.
Meanwhile, the utility model additionally uses four circle feed waveguide structures, in the case that relatively conventional external diameter is constant, increases
Order of reflection is added, the horizontal polarization signals probe and vertical polarization signal probe in feed is improved mutually in 90 degree of design
Isolation, places four sides for enclosing feed waveguide structures, so as to greatling save by the PCB of process signal circuit
PCB surface is accumulated and body dimension, and two dielectric oscillators are separately positioned on into body two sides, improves the parameter of circuit frequency multiplication.
In signal, weaker area realizes need that weaker satellite-signal is received with miniature antenna (moonlet pot) to the utility model
Ask, in addition the high area of part satellite density realize pannikin one pot of one tuner double star receive scheme, be cost most
Excellent solution.In environment complex area, decline in the face of rain, situations such as high temperature changes, the utility model working stability, body
Preferable economic results in society are showed.
Claims (5)
1. a kind of special KU frequency ranges dual-port output high frequency tuner in weak signal area, the tuner is arranged on antenna and DVB
Between, including shell, the shell is provided with two output interfaces, and inside the shell is provided with signal processing circuit, it is characterised in that：Institute
State feed, the first low-noise amplifier, the second low-noise amplifier, the first high frequency letter that signal processing circuit is received including signal
Number two distributors, the distributor of the second high-frequency signal two, the first bandpass filter, the second bandpass filter, the 3rd bandpass filter,
4th bandpass filter, the first frequency mixer, the second frequency mixer, three-mixer, the 4th frequency mixer, the first intermediate frequency amplifier,
Two intermediate frequency amplifiers, the 3rd intermediate frequency amplifier, the 4th intermediate frequency amplifier, first medium oscillator, second medium oscillator, matrix
Switch, the 5th intermediate frequency amplifier, the 6th intermediate frequency amplifier, are separately installed with horizontal polarization and vertical polarization signal in the feed
Probe, vertical polarization signal the first low-noise amplifiers of Jing, the first high-frequency signal that the vertical polarization signal probe will be received
Two-way is exported after two distributors, matrix is sent to Jing after the first bandpass filter, the first frequency mixer, the first intermediate frequency amplifier all the way
The first input end of switch, after the bandpass filters of another Lu Jing tri-, three-mixer, the 3rd intermediate frequency amplifier matrix is sent to
3rd input of switch；The horizontal polarization signals probe by receive the low-noise amplifiers of horizontal polarization signals Jing second,
Two-way is exported after the distributor of second high-frequency signal two, all the way the bandpass filters of Jing second, the second frequency mixer, the second intermediate frequency amplifier
Send the second input of matrix switch, the bandpass filters of another Lu Jing tetra-, the 4th frequency mixer, the 4th intermediate frequency amplifier to afterwards
Send the 4th input of matrix switch to afterwards；Two output ends difference intermediate frequency amplifiers of Jing the 5th of the matrix switch, the
Six intermediate frequency amplifiers are exported, and first frequency mixer and the second frequency mixer share first medium oscillator, the three-mixer
Second medium oscillator is shared with the 4th frequency mixer.
2. the special KU frequency ranges dual-port output high frequency tuner in a kind of weak signal area according to claim 1, it is characterised in that：
First low-noise amplifier and the second low-noise amplifier are using the low-noise amplifier composition of thtee-stage shiplock connection.
3. the special KU frequency ranges dual-port output high frequency tuner in a kind of weak signal area according to claim 1, it is characterised in that：
Horizontal polarization signals probe and vertical polarization signal probe in the feed is in mutually 90 degree.
4. the special KU frequency ranges dual-port output high frequency tuner in a kind of weak signal area according to claim 1, it is characterised in that：
The first medium oscillator is the dielectric oscillator of local frequency 9.75GHz.
5. the special KU frequency ranges dual-port output high frequency tuner in a kind of weak signal area according to claim 1, it is characterised in that：
The second medium oscillator is the dielectric oscillator of local frequency 10.6GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153261.8U CN206136105U (en) | 2016-10-31 | 2016-10-31 | Weak signal area special KU frequency channel dual -port output tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153261.8U CN206136105U (en) | 2016-10-31 | 2016-10-31 | Weak signal area special KU frequency channel dual -port output tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206136105U true CN206136105U (en) | 2017-04-26 |
Family
ID=58576562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621153261.8U Expired - Fee Related CN206136105U (en) | 2016-10-31 | 2016-10-31 | Weak signal area special KU frequency channel dual -port output tuner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206136105U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864348A (en) * | 2017-11-16 | 2018-03-30 | 珠海市普斯赛特科技有限公司 | A kind of C-band dual output medium this vibration shape dual polarization positive bias lnb |
| CN111131732A (en) * | 2019-12-24 | 2020-05-08 | 深圳翔成电子科技有限公司 | KU-band tuner |
| CN112018480A (en) * | 2020-08-26 | 2020-12-01 | 中电科仪器仪表有限公司 | Integrated solid-state signal external spread spectrum device and solid-state signal generator |
-
2016
- 2016-10-31 CN CN201621153261.8U patent/CN206136105U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864348A (en) * | 2017-11-16 | 2018-03-30 | 珠海市普斯赛特科技有限公司 | A kind of C-band dual output medium this vibration shape dual polarization positive bias lnb |
| CN111131732A (en) * | 2019-12-24 | 2020-05-08 | 深圳翔成电子科技有限公司 | KU-band tuner |
| CN111131732B (en) * | 2019-12-24 | 2021-10-19 | 深圳翔成电子科技有限公司 | KU-band tuner |
| CN112018480A (en) * | 2020-08-26 | 2020-12-01 | 中电科仪器仪表有限公司 | Integrated solid-state signal external spread spectrum device and solid-state signal generator |
| CN112018480B (en) * | 2020-08-26 | 2022-03-11 | 中电科思仪科技股份有限公司 | Integrated solid-state signal external spread spectrum device and solid-state signal generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20211031 |