CN109037960A - Satellite antenna tuner polarizing voltage adjusts device - Google Patents
Satellite antenna tuner polarizing voltage adjusts device Download PDFInfo
- Publication number
- CN109037960A CN109037960A CN201810907186.7A CN201810907186A CN109037960A CN 109037960 A CN109037960 A CN 109037960A CN 201810907186 A CN201810907186 A CN 201810907186A CN 109037960 A CN109037960 A CN 109037960A
- Authority
- CN
- China
- Prior art keywords
- voltage
- polarizing
- feedback network
- power supply
- polarizing voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
Abstract
The invention discloses a kind of satellite antenna tuner polarizing voltages to adjust device, including the main decompression chip of linear power supply and peripheral matched circuit and controlled resistor feedback network.Linear power supply reduction voltage circuit is converted to 18V or 13V polarizing voltage after inputting nominal 24V voltage step-down, while having certain filter action, reduces Ripple Noise, makes the polarizing voltage better quality of supply high frequency head.Voltage sample feedback network circuit category main function is to stablize the polarizing voltage needed, keeps output constant when input voltage fluctuation, while core innovative function is that the network is controlled by external level signal, can quick and precisely be switched, to change output voltage.
Description
Technical field
The present invention relates to satellite antenna reception techniques, adjust device more particularly to satellite antenna tuner polarizing voltage.
Background technique
In satellite antenna reception system, the satellite (such as culminant star 9) of circular polarisation mode is needed to adjust tuner
Polarization could receive the satellite-signal of whole frequency points, and tuner is polarized, which to be adjusted, is completed by adjusting polarizing voltage, pole
Change voltage respectively left-handed (nominal 18V) and dextrorotation (nominal 13V).Most common polarizing voltage generation circuit is to generate 2 tunnels
Different voltages select 1 mode to select then left-handed voltage or dextrorotation voltage by 2, this scheme need 2 road power-switching circuits and
Gating switch, it is more complicated, it is at high cost.
Therefore the technical solution for needing one kind new is to solve the above problems.
Summary of the invention
Goal of the invention: the present invention is provided a kind of at low cost and is filled convenient for the adjustment of the satellite antenna tuner polarizing voltage of operation
It sets.
Technical solution: following technical scheme can be used in motor speed detection method of the present invention, comprising the following steps:
A kind of satellite antenna tuner polarizing voltage adjustment device, including linear power supply decompression chip, controlled resistor feedback
Network；
Wherein linear power supply decompression chip receives 24V DC voltage, and will be converted to 18V after 24V DC voltage decompression
Or 13V polarizing voltage；
Controlled resistor feedback network is controlled the polarizing voltage after switching decompression by external level signal.
The utility model has the advantages that satellite antenna tuner polarizing voltage adjustment device provided by the invention converts electricity using single channel power supply
Road can control the voltage feedback network circuit structure form of linear power supply chip by simple low and high level, to change anti-
Feedforward coefficient generates the left-handed and two different polarizing voltages of dextrorotation, it is possible to reduce the circuit element of half, it is simple and reliable.
Further, adjustable linear power supply chip selects LM317 cake core, the pin 2 and pin 1 of the LM317 cake core
Between pressure difference be maintained at 1.25V, controlled resistor feedback network includes the metal-oxide-semiconductor and several resistance combinations by level signal control,
Resistance combination after metal-oxide-semiconductor conducting forms the first intrinsic standoff ratio, and the resistance combination after which disconnects forms the second intrinsic standoff ratio,
By controlled resistor feedback network input high level or low level control, when high level, output voltage is (first point of 1.25V*
Pressure ratio+1)=13V, when high level, output voltage is 1.25V* (the second intrinsic standoff ratio+1)=13V.
Further, the linear adjustable voltage of the big encapsulation TO-263 of selection.
Further, linear power supply reduction voltage circuit has filter action.
Further, controlled resistor feedback network is protected also to stablize the polarizing voltage needed when input voltage fluctuation
It is constant to hold output.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that satellite antenna tuner polarizing voltage of the present invention adjusts device.
Specific embodiment
Incorporated by reference to shown in Fig. 1, the present invention provides a kind of satellite antenna tuner polarizing voltage adjustment device, including linear electricity
The main decompression chip in source and peripheral matched circuit and controlled resistor feedback network.Linear power supply reduction voltage circuit will input nominal 24V electricity
18V or 13V polarizing voltage is converted to after pressure drop pressure, while there is certain filter action, reduces Ripple Noise, keeps supply high
The polarizing voltage better quality of frequency head.Voltage sample feedback network circuit category main function is to stablize the polarizing voltage needed, when
Keep output constant when input voltage fluctuation, while core innovative function is that the network is controlled by external level signal, can be carried out
Quick and precisely switch, to change output voltage.
Concrete principle description: the power consumption electric current of antenna tuner is little, and system nominal input voltage is 24VDC, tuner
It is desirable that left-handed 18VDC and dextrorotation 13VDC, so the linear adjustable voltage of the big encapsulation TO-263 of present invention selection.The present apparatus
Using a kind of adjustable linear power supply chip LM317, the characteristics of chip is that pressure difference is protected between pin 2 and pin 1 when working normally
It holds in 1.25V, the intrinsic standoff ratio of the resistance pressure-dividing network by changing its feedback voltage, i.e. adjustable output voltage.
For example, controlled resistor feedback network includes metal-oxide-semiconductor and several resistance combinations by level signal control, the metal-oxide-semiconductor
Resistance combination after conducting forms the first intrinsic standoff ratio, and the resistance combination after which disconnects forms the second intrinsic standoff ratio, by controlled
Resistance-feedback network input high level or low level control, when high level output voltage be 1.25V* (the first intrinsic standoff ratio+1)=
13V, when high level, output voltage is 1.25V* (the second intrinsic standoff ratio+1)=13V.
In addition, implement the technical solution method and approach it is very much, the above is only preferred implementation of the invention
Mode, it is noted that for those skilled in the art, without departing from the principle of the present invention, also
Several improvements and modifications can be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.It is unknown in the present embodiment
The available prior art of true each component part is realized.
Claims (5)
1. a kind of satellite antenna tuner polarizing voltage adjusts device, it is characterised in that: including linear power supply decompression chip, controlled
Resistance-feedback network；
Wherein linear power supply decompression chip receives 24V DC voltage, and will be converted to 18V or 13V after 24V DC voltage decompression
Polarizing voltage；
Controlled resistor feedback network is controlled the polarizing voltage after switching decompression by external level signal.
2. polarizing voltage according to claim 1 adjusts device, it is characterised in that: adjustable linear power supply chip selection
LM317 cake core, pressure difference is maintained at 1.25V, controlled resistor feedback network packet between the pin 2 and pin 1 of the LM317 cake core
The metal-oxide-semiconductor by level signal control and several resistance combinations are included, the resistance combination after metal-oxide-semiconductor conducting forms the first intrinsic standoff ratio,
Resistance combination after the metal-oxide-semiconductor disconnects forms the second intrinsic standoff ratio, passes through controlled resistor feedback network input high level or low level
Control, when high level, output voltage is 1.25V* (the first intrinsic standoff ratio+1)=13V, and when high level, output voltage is 1.25V*
(the second intrinsic standoff ratio+1)=13V.
3. polarizing voltage according to claim 2 adjusts device, it is characterised in that: big encapsulation the linear of TO-263 of selection can
Adjust voltage.
4. polarizing voltage according to claim 3 adjusts device, it is characterised in that: linear power supply reduction voltage circuit has filtering
Effect.
5. motor speed detection method according to claim 1, it is characterised in that: controlled resistor feedback network is also to steady
Surely the polarizing voltage needed keeps output constant when input voltage fluctuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907186.7A CN109037960A (en) | 2018-08-10 | 2018-08-10 | Satellite antenna tuner polarizing voltage adjusts device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907186.7A CN109037960A (en) | 2018-08-10 | 2018-08-10 | Satellite antenna tuner polarizing voltage adjusts device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109037960A true CN109037960A (en) | 2018-12-18 |
Family
ID=64633500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810907186.7A Pending CN109037960A (en) | 2018-08-10 | 2018-08-10 | Satellite antenna tuner polarizing voltage adjusts device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109037960A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070019117A1 (en) * | 2005-07-25 | 2007-01-25 | Sharp Kabushiki Kaisha | Low noise block converter |
| CN201388161Y (en) * | 2009-03-26 | 2010-01-20 | 青岛海信电器股份有限公司 | Power supply voltage regulating circuit and tuner feed circuit using same |
| KR101216010B1 (en) * | 2011-08-24 | 2012-12-27 | (주)인텔리안테크놀로지스 | Satellite vsat antenna for transmitting/receiving co and cross polarization |
| CN203813659U (en) * | 2014-03-18 | 2014-09-03 | 井冈山电器有限公司 | Satellite tuner power supply circuit |
| CN108233711A (en) * | 2018-01-16 | 2018-06-29 | 四川安迪科技实业有限公司 | A kind of LNB polarization power supplies power-supplying circuit |
-
2018
- 2018-08-10 CN CN201810907186.7A patent/CN109037960A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070019117A1 (en) * | 2005-07-25 | 2007-01-25 | Sharp Kabushiki Kaisha | Low noise block converter |
| CN201388161Y (en) * | 2009-03-26 | 2010-01-20 | 青岛海信电器股份有限公司 | Power supply voltage regulating circuit and tuner feed circuit using same |
| KR101216010B1 (en) * | 2011-08-24 | 2012-12-27 | (주)인텔리안테크놀로지스 | Satellite vsat antenna for transmitting/receiving co and cross polarization |
| CN203813659U (en) * | 2014-03-18 | 2014-09-03 | 井冈山电器有限公司 | Satellite tuner power supply circuit |
| CN108233711A (en) * | 2018-01-16 | 2018-06-29 | 四川安迪科技实业有限公司 | A kind of LNB polarization power supplies power-supplying circuit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |