CN206135916U - Single star single -output KU band satellite down converter of circular polarization - Google Patents
Single star single -output KU band satellite down converter of circular polarization Download PDFInfo
- Publication number
- CN206135916U CN206135916U CN201621151434.2U CN201621151434U CN206135916U CN 206135916 U CN206135916 U CN 206135916U CN 201621151434 U CN201621151434 U CN 201621151434U CN 206135916 U CN206135916 U CN 206135916U
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- Prior art keywords
- signal
- low
- satellite
- noise amplifier
- band
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Abstract
The utility model discloses a single star single -output KU band satellite down converter of circular polarization relates to satellite receiving equipment technical field. Processing circuit including the feed of gathering linear polarization satellite signal, with the two tunnel parallelly connected first order low -noise amplifier that the feed is connected and is gone on enlargeing to water flat line polarization signal and perpendicular line polarization signal respectively, the satellite signal is behind the low -noise amplifier of the second level, the amplifying signal carries out the frequency band through band pass filter and filters, signal input after the filtration is to the integrated IC who has PLL phaselock technique, integration IC provides an output signal, just integration IC still is connected with a crystal oscillator. Simplify circuit structure, practiced thrift cost and design space, reduced the preparation process, improved production efficiency.
Description
Technical field
This utility model is related to satellite receiving equipment technical field, more particularly to a kind of circular polarisation list star list output KU wave bands
Satellite low-converter.
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.Satellite audiovisual reception system commonly used in the prior art is defended by parabola antenna, tuner, numeral
The satellite earth receiving station of the complete set of star receiver composition.
Because satellite audiovisual transmission uses microwave, with optical alignment propagation characteristic, for C frequency ranges and Ku frequency ranges,
Generally using the parabola antenna with very highly directive, the effect of antenna is by from aerial using the principle of geometric optics
Satellite-signal energy reflection, converge in focus, the electric wave signal conduction for being intended to receive by the feed in focus is conveyed to
Tuner immediately after, the effect of tuner is that the small-signal for receiving on antenna is amplified, and respectively by C frequency ranges 3.4
～4.2GHz, the signal of Ku 10.75～12.75GHz of frequency range are down-converted to after 950～1450MHz, 950～2150MHz frequency ranges and put
Big output, with coaxial cable satellite audio visual signal receiver is sent to, and satellite audio visual signal receiver again comes tuner conveying
Satellite-signal be demodulated, demodulate satellite image signal and audio signal.
At present, all of satellite low noise block can be divided into single local oscillator and double local oscillator tuners according to local oscillator classification；According to polarization
Mode can be divided into single polarization, dual polarization, linear polarization and circular polarisation tuner；Can be divided into single output according to exporting, dual output, four is defeated
Go out and eight output high frequency tuners；Can be divided into C frequency ranges, KU frequency ranges and KA frequency range tuners again according to application band.In traditional KU ripples
During the manufacturing of Duan Weixing low-converters, because electronic devices and components are all separate types, need in the fabrication process big
Supporting production, production efficiency is low, and product fraction defective is also higher for the man power and material of amount.While horizontal signal and vertical letter
Number audio visual effect of mutual crosstalk when also reducing practical application.
Utility model content
Technical problem to be solved in the utility model is to provide under a kind of circular polarisation list star list output KU band satellites and becomes
Frequency device, simplifies circuit structure, has saved cost and design space, reduces manufacturing process, improves production efficiency.
To solve above-mentioned technical problem, technical solution adopted in the utility model is：A kind of circular polarisation list star list output
KU band satellite low-converters, including shell, the shell is provided with an output port, and enclosure is provided with signal processing electricity
Road, the signal processing circuit includes the feed of aggregation linear polarization satellite-signal and feed connection and respectively to horizontal linear polarization
The two-way parallel connection first order low-noise amplifier that signal and vertical line polarized signal are amplified, satellite-signal Jing second level low noise
After acoustic amplifier, the signal of amplification carries out band division filter by band filter, and the signal input after filtration locks phase to PLL
On the integrated IC of technology, integrated IC provides an output signal, and integrated IC is also associated with a crystal oscillator.
Further the technical scheme of optimization is that the signal processing circuit also includes power supply IC, and it is two-way first order low noise
Acoustic amplifier, second level low-noise amplifier and integrated IC provide power supply.
Further the technical scheme of optimization is that two-way first order low-noise amplifier and second level low-noise amplifier are adopted
With the amplifier of model NE3503S01.
Further the technical scheme of optimization is to be provided with to prevent horizontal linear polarization signal and vertical linear polarization letter in the feed
The dieelctric sheet of number crosstalk.
Further the technical scheme of optimization is to be additionally provided with an intermediate frequency amplifier inside the integrated IC.
It is using the beneficial effect produced by above-mentioned technical proposal：This utility model utilizes the integrated IC of PLL Phase Lock Techniques,
The local oscillation signal of original separate type is integrated in an IC chip, while a high frequency amplifier is also integrated.
The electronic devices and components quantity of circuit peripheral is this not only reduces, also causes wiring more simple and efficient.Greatly simplify
Manufacturing process, effectively locks local oscillation signal；Simultaneously using the mode of dieelctric sheet isolation so that the crosstalk of signal has very well
Solution, audio visual effect is improved.Manpower about 40% can be directly reduced on the basis of original manufacture manpower, instrument sets
It is standby to reduce about 30%, so as to greatly improve production efficiency, while also have to cost significantly saving.
Description of the drawings
Fig. 1 is this utility model circuit theory diagrams.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Based on the embodiment in this 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 this utility model protection.
As shown in figure 1, this utility model is arranged between antenna and DVB, it includes shell, is arranged on shell
On output interface and be arranged on the signal processing circuit of inside the shell, in its signal processing circuit, using feed 10 satellite is received
Signal, then signal by output to first polarization probe 11, second polarize probe 12, vertical linear polarization signal (VLP) and
Horizontal linear polarization signal (HLP) is exported respectively to low noise amplification Jing after the first polarization polarization probe 12 of probe 11 and second is coupled
Device 21,22 is amplified, and in the present embodiment, the material of the first polarization polarization probe 12 of probe 11 and second is that ferrum is silver-plated or ferrum
Nickel plating.Low-noise amplifier includes first order low-noise amplifier 21 and 22, second level low-noise amplifier 31；Band filter
41；Wherein first order low-noise amplifier 21,22 employs noise figure low well to ensure the noise objective of product
Noise amplifier；Because first order amplifier is in parallel, thus into during second level low-noise amplifier 31 below just simultaneously
In order to all the way, material is thus formed the combined effect of two-level concatenation low-noise amplifier.By first order low-noise amplifier 21
Respectively signal amplification is carried out to vertical line polarized signal (VLP) and horizontal linear polarization signal (HLP) with 22 so as to which meeting system will
The gain asked and noise figure.Three low-noise amplifier models use the model of NEC semiconductor companies
NE3503S01.Signal output after low-noise amplifier amplifies is to band filter 41, the band logical frequency of band filter
12.2-12.7GHz is, is the unwanted frequency band of the system that filters out by the main purpose of band filter 41, play suppression mirror
Effect as disturbing and ensureing spectral purity.
In the present embodiment, as a result of the integrated IC of band PLL Phase Lock Techniques, so through the signal of band filter 41,
Access the integrated IC 51 with PLL Phase Lock Techniques；Integrated IC provides an output signal, so as to realize the function of single output.Input
The mixing of frequency, amplifies and the phase-locked function, realizes all inside integrated IC.
In the present embodiment, low-noise amplifier 21,22,31,51 carries a power supply IC because being active device
61, it is that the power supply of low-noise amplifier 21,22,31,51 makes its normal work so as to reach the purpose of amplification.Because realizing lock phase
During technology, need to provide a reference frequency in integrated circuit external, so in this example, that what is innovated again employs a ginseng
Examine the method for frequency crystal oscillator 71 to realize, while dieelctric sheet 81 is adjusted into certain angle, make horizontal signal with vertical signal
Crosstalk has good isolation so that audio visual effect is improved.
Claims (5)
1. a kind of circular polarisation list star list exports KU band satellite low-converters, it is characterised in that：Including shell, set on the shell
There is an output port, enclosure is provided with signal processing circuit, and the signal processing circuit includes aggregation linear polarization satellite letter
Number the feed and feed two-way that connects and horizontal linear polarization signal and vertical line polarized signal are amplified respectively in parallel the
One-level low-noise amplifier, Jing after the low-noise amplifier of the second level, the signal of amplification is carried out satellite-signal by band filter
Band division filter, in the signal input after filtration to the integrated IC with PLL Phase Lock Techniques, integrated IC provides an output signal,
And integrated IC is also associated with a crystal oscillator.
2. a kind of circular polarisation list star list according to claim 1 exports KU band satellite low-converters, it is characterised in that：Institute
Stating signal processing circuit also includes power supply IC, and it is two-way first order low-noise amplifier, second level low-noise amplifier and collection
Power supply is provided into IC.
3. a kind of circular polarisation list star list according to claim 1 exports KU band satellite low-converters, it is characterised in that：Two
Road first order low-noise amplifier and second level low-noise amplifier are using the amplifier of model NE3503S01.
4. a kind of circular polarisation list star list according to claim 1 exports KU band satellite low-converters, it is characterised in that：Institute
State and the dieelctric sheet for preventing horizontal linear polarization signal and vertical line polarized signal crosstalk is provided with feed.
5. a kind of circular polarisation list star list according to claim 1 exports KU band satellite low-converters, it is characterised in that：Institute
State and an intermediate frequency amplifier is additionally provided with inside integrated IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151434.2U CN206135916U (en) | 2016-10-31 | 2016-10-31 | Single star single -output KU band satellite down converter of circular polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151434.2U CN206135916U (en) | 2016-10-31 | 2016-10-31 | Single star single -output KU band satellite down converter of circular polarization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135916U true CN206135916U (en) | 2017-04-26 |
Family
ID=58575397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621151434.2U Expired - Fee Related CN206135916U (en) | 2016-10-31 | 2016-10-31 | Single star single -output KU band satellite down converter of circular polarization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135916U (en) |
-
2016
- 2016-10-31 CN CN201621151434.2U patent/CN206135916U/en not_active Expired - Fee Related
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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 |