CN113541771B - Satellite down converter for receiving Beidou signal for households - Google Patents
Satellite down converter for receiving Beidou signal for households Download PDFInfo
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- CN113541771B CN113541771B CN202110802392.3A CN202110802392A CN113541771B CN 113541771 B CN113541771 B CN 113541771B CN 202110802392 A CN202110802392 A CN 202110802392A CN 113541771 B CN113541771 B CN 113541771B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a down converter for receiving a Beidou signal for a household satellite, which comprises a Beidou signal receiving part, a satellite signal receiving part and a satellite signal down-conversion part, wherein the satellite signal down-conversion part, a satellite receiving separation filtering part and a printed line radio frequency signal mixing part are adopted; the satellite receiving separation filtering part comprises a printed board on-board inductor, an inductor and a capacitor to form LC filtering, and the printed line radio frequency signal mixing part comprises a capacitor C29, a capacitor C12, a resistor R4 and a printed line. The satellite receiving and separating filtering part is designed by adopting an LC separating device, the satellite signal receiving part receives satellite signals by adopting a circular polarization receiving pin made of carbon steel, and the Beidou signal receiving part receives Beidou signals by adopting a PCB onboard antenna, so that the product cost is reduced on the premise of ensuring the performance.
Description
Technical Field
The invention relates to the technical field of satellite signal receiving equipment, in particular to a down converter for receiving a Beidou signal family satellite.
Background
One product in the fourth generation satellite direct broadcast satellite is a satellite down converter for receiving Beidou signals for households, a satellite receiving and filtering part in the common satellite down converter for receiving the Beidou signals for households adopts a TCC (cross-talk-over-cellular) or LTCC (low temperature co-fired ceramic) integrated element, and a circularly polarized receiving needle adopts silver plated copper, so that the cost is high.
Disclosure of Invention
The invention aims to provide a down converter for receiving a Beidou signal family satellite, which is used for solving the problem that the down converter for receiving the Beidou signal family satellite in the prior art is high in cost:
the invention solves the problems through the following technical scheme:
a household satellite down converter for receiving Beidou signals comprises an LDO power supply part, a satellite signal receiving part and a Beidou signal receiving part, wherein the satellite signal receiving part is connected with the satellite signal down conversion part, the satellite signal down conversion part is connected with a satellite receiving and separating filtering part, the satellite receiving and separating filtering part and the output end of the Beidou signal receiving part are connected with a printed line radio frequency signal mixing part, the LDO power supply part provides power supply voltage, the satellite signal receiving part receives satellite signals by adopting a circular polarization receiving pin made of carbon steel, and the Beidou signal receiving part receives the Beidou signals by adopting a PCB on-board antenna; the satellite receiving and separating filtering part comprises a capacitor C17 connected with a satellite signal down-conversion part, the capacitor C17 is connected with a first end of an inductor L5, a second end of the inductor L5 is connected with an inductor L8 in sequence, the capacitor C24 is grounded, a second end of the inductor L5 is also connected with a printed board inductor LY1 in sequence, the printed board inductor LY2 and the printed board inductor LY3, a node between the printed board inductor LY1 and the printed board inductor LY2 is connected with an inductor L9 and a capacitor C30 in sequence and then grounded, a node between the printed board inductor LY2 and the printed board inductor LY3 is connected with an inductor L12 and a capacitor C31 in sequence and then grounded, the printed board inductor LY3 is connected with first ends of an inductor L10 and an inductor L7 respectively, the inductor L10 is grounded through a capacitor C25, the inductor L7 is connected with a capacitor C19 and grounded and is output to a printed line radio frequency signal mixing part through an inductor L4, the printed line radio frequency signal mixing part is composed of a capacitor C29, a Beidou signal output through a Beidou satellite signal receiving and Beidou signal coupling and Beidou signal output through a Beidou signal coupling and a satellite signal coupling part, and Beidou signal output through a Beidou signal coupling and a Beidou signal coupling terminal of a satellite receiving and Beidou signal coupling part, and a Beidou signal output terminal.
A left-handed signal output by a circular polarization receiving pin of the satellite signal receiving part is connected with a low-noise high-gain amplifier Q1, and the output end of the low-noise high-gain amplifier Q1 is connected with the first end of a capacitor C14; the right-hand signal output by the circularly polarized receiving pin is connected with a low-noise high-gain amplifier Q3, and the output end of the low-noise high-gain amplifier Q3 is connected with the first end of a capacitor C21; the second end of the capacitor C14 and the second end of the capacitor C21 are connected to the input end of the low-noise high-gain amplifier Q2, the output end of the low-noise high-gain amplifier Q2 is connected to the satellite signal down-conversion part after being connected to the capacitor C16, and the voltage states of the low-noise high-gain amplifier Q1 and the low-noise high-gain amplifier Q3 are controlled by the output of the satellite signal down-conversion part and used for controlling signal switching.
The satellite signal down-conversion part comprises a down-conversion chip, the signal input end of the down-conversion chip is connected with the capacitor C16, pins 4 and 5 of the down-conversion chip are respectively connected with the G pole and the D pole of the low-noise high-gain amplifier Q3, pins 17 and 18 of the down-conversion chip are respectively connected with the G pole and the D pole of the low-noise high-gain amplifier Q1, pins 8 of the down-conversion chip are respectively connected with the first end of the resistor R7 and the first end of the resistor R8, the second end of the resistor R7 is connected with the LDO power supply part, and the second end of the resistor R8 is grounded; the 10 pins of the down-conversion chip are connected with the capacitor C22 and then are grounded or suspended, and the output end of the down-conversion chip is connected with the satellite receiving, separating and filtering part.
The big dipper signal reception part includes PCB board and carries the antenna, PCB board carries the antenna connection inductance L11's first end, inductance L11's second end is connected the input of big dipper amplifier, big dipper wave filter is connected to big dipper amplifier's output, export to the printed wiring radio frequency signal mixed part behind electric capacity C28 is connected to big dipper wave filter's output.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the satellite receiving and separating filter part is designed by adopting an LC separating device, wherein an inductor is printed on board, a satellite signal receiving part receives satellite signals by adopting a circular polarization receiving needle made of carbon steel, a Beidou signal receiving part receives Beidou signals by adopting a PCB printed on board antenna, and a mixing part adopts on-board printed lines, so that the product cost is reduced on the premise of ensuring the performance.
Drawings
FIG. 1 is a block diagram of the circuit of the present invention;
FIG. 2 is a schematic diagram of the present invention;
wherein, the U2-down conversion chip.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
with reference to fig. 1 and 2, a down converter for receiving a beidou signal for a household satellite comprises an LDO power supply part, a satellite signal receiving part and a beidou signal receiving part, wherein the satellite signal receiving part is connected with the satellite signal down-conversion part, the satellite signal down-conversion part is connected with the satellite receiving separation filtering part, the output ends of the satellite receiving separation filtering part and the beidou signal receiving part are connected with a printed line radio frequency signal mixing part, the LDO power supply part provides power supply voltage, the satellite signal receiving part receives a satellite signal by using a circular polarization receiving pin made of carbon steel, and the beidou signal receiving part receives the beidou signal by using a PCB on-board antenna; the satellite receiving and separating filtering part comprises a capacitor C17 connected with a satellite signal down-conversion part, the capacitor C17 is connected with a first end of an inductor L5, a second end of the inductor L5 is connected with an inductor L8 in sequence, the capacitor C24 is grounded, a second end of the inductor L5 is also connected with a printed board inductor LY1 in sequence, the printed board inductor LY2 and the printed board inductor LY3, a node between the printed board inductor LY1 and the printed board inductor LY2 is connected with an inductor L9 and a capacitor C30 in sequence and then grounded, a node between the printed board inductor LY2 and the printed board inductor LY3 is connected with an inductor L12 and a capacitor C31 in sequence and then grounded, the printed board inductor LY3 is connected with first ends of an inductor L10 and an inductor L7 respectively, the inductor L10 is grounded through a capacitor C25, the inductor L7 is connected with a capacitor C19 and grounded and is output to a printed line radio frequency signal mixing part through an inductor L4, the printed line radio frequency signal mixing part is composed of a capacitor C29, a Beidou signal output through a Beidou satellite signal receiving and Beidou signal coupling and Beidou signal output through a Beidou signal coupling and a satellite signal coupling part, and Beidou signal output through a Beidou signal coupling and a Beidou signal coupling terminal of a satellite receiving and Beidou signal coupling part, and a Beidou signal output terminal.
In the invention, the satellite receiving and separating filter part is designed by adopting an LC separating device, wherein the inductor is printed on board, the printed line radio frequency signal mixing part adopts a printed line, the circular polarization receiving pin is made of carbon steel, the Beidou receiving part adopts a PCB on-board antenna, and the mixing part adopts a radio frequency printed line mode, so that the product cost is reduced on the premise of ensuring the performance.
Example 2:
on the basis of the embodiment 1, with reference to fig. 2, the left-hand signal output by the circular polarization receiving pin of the satellite signal receiving part is connected to a low-noise high-gain amplifier Q1, and the output end of the low-noise high-gain amplifier Q1 is connected to the first end of a capacitor C14; a right-hand signal output by the circularly polarized receiving pin is connected with a low-noise high-gain amplifier Q3, and the output end of the low-noise high-gain amplifier Q3 is connected with the first end of a capacitor C21; the second end of the capacitor C14 and the second end of the capacitor C21 are connected to the input end of the low-noise high-gain amplifier Q2, the output end of the low-noise high-gain amplifier Q2 is connected to the satellite signal down-conversion part after being connected to the capacitor C16, and the voltage states of the low-noise high-gain amplifier Q1 and the low-noise high-gain amplifier Q3 are controlled by the output of the satellite signal down-conversion part and used for controlling signal switching.
The satellite signal down-conversion part comprises a down-conversion chip, the signal input end of the down-conversion chip is connected with the capacitor C16, pins 4 and 5 of the down-conversion chip are respectively connected with the G pole and the D pole of the low-noise high-gain amplifier Q3, pins 17 and 18 of the down-conversion chip are respectively connected with the G pole and the D pole of the low-noise high-gain amplifier Q1, pins 8 of the down-conversion chip are respectively connected with the first end of the resistor R7 and the first end of the resistor R8, the second end of the resistor R7 is connected with the LDO power supply part, and the second end of the resistor R8 is grounded; the 10 pins of the down-conversion chip are connected with the capacitor C22 and then are grounded or suspended, and the output end of the down-conversion chip is connected with the satellite receiving, separating and filtering part.
The big dipper signal reception part includes PCB board and carries the antenna, PCB board carries the antenna connection inductance L11's first end, inductance L11's second end is connected the input of big dipper amplifier, big dipper wave filter is connected to big dipper amplifier's output, export to the printed wiring radio frequency signal mixed part behind electric capacity C28 is connected to big dipper wave filter's output.
Satellite signals are accessed through a circularly polarized receiving pin, the access frequency is 11.7 GHz-12.2 GHz, left-handed signals are amplified through a low-noise high-gain amplifier Q1 and then coupled to a low-noise high-gain amplifier Q2 through a capacitor C14, and the amplified signals of the low-noise high-gain amplifier Q2 are coupled to a pin 3 of a down-conversion chip U2 through a capacitor C16. The right-handed signal is amplified by a low-noise high-gain amplifier Q3 and then coupled to a low-noise high-gain amplifier Q2 through a capacitor C21, the amplified low-noise high-gain amplifier Q2 is coupled to a pin 3 of a down-conversion chip U2 through a capacitor C16, and a down-conversion broadband signal inside the down-conversion chip U2 is output through a pin 14.
Signal switching: the left-handed signal and the right-handed signal cannot be received at the same time, and the voltage states of the Q1 and the Q3 are controlled by a down-conversion chip U2; when a left-handed signal is received, the down-conversion chip U2 enables the Q1 to work, and the Q3 stops working; when a right-hand signal is received, the down-conversion chip U2 enables the Q3 to work, and the Q1 stops working.
The working voltage of the whole machine enters through 'L/R polarization voltage', the voltage state input is two states, one is less than or equal to DC13V, the other is more than or equal to DC18V, and the power supply is provided by the set top box according to the states; providing voltage, forming a voltage division circuit through a resistor R7 and a resistor R8, and entering an 8 pin of a down-conversion chip U2; when the input voltages are different, the voltage states of the 8 pins entering the down-conversion chip U2 are different, and the 8 pins of the down-conversion chip U2 control the working states of the low-noise high-gain amplifier Q1 and the low-noise high-gain amplifier Q3 according to the voltage states; the working state of Q1 is controlled by a pin 17 (controlling the G pole of Q1) and a pin 18 (controlling the D pole of Q1) of the down-conversion chip U2; the 4 pins (for controlling the G pole of the Q3) and the 5 pins (for controlling the D pole of the Q3) of the down-conversion chip U2 control the working state of the Q3. When a pin 10 of the down-conversion chip U2 is externally connected with a capacitor C22, when the input voltage is less than or equal to DC13V, RDA3566E (element bit number U2) controls Q3 to work, and Q1 stops working; the input voltage is more than or equal to the DC18V down-conversion chip U2 to control the Q1 to work, and the Q3 stops working; when the 10 feet of the down-conversion chip U2 are suspended, the down-conversion chip U2 controls the Q1 to work and the Q3 stops working when the input voltage is less than or equal to DC 13V; the input voltage is more than or equal to the DC18V down-conversion chip U2 to control Q3 to work, and Q1 stops working.
The down-conversion chip is of the type RDA3566E. The satellite low-noise high-gain amplifiers Q1-Q3 adopt YF36 series, CKRF75 series, CKRF85 series or JK15 series, and product cost is reduced.
A14-pin down-conversion signal of the down-conversion chip U2 is filtered through an LC separation filter consisting of a capacitor C17, an inductor L5, an inductor L6, inductors L7 and C18, an inductor L4, inductors L8 and C24, an inductor L10, a capacitor C25 and a capacitor C19, and the value bandwidth of the signal is 950 MHz-1470 MHz.
The receiving frequency range of the Beidou signal receiving part is 1550 MHz-1615 MHz. The Beidou amplifier adopts SW7 series; the Beidou filter adopts industrial MS11U1G57 series, so that the product cost is reduced. The power supply input of the SW7 series Beidou amplifier is DC6V, and the circuit is formed by a resistor R1, an inductor L3 and a capacitor C10 to supply power.
The Beidou signal is coupled and input through a capacitor C29, the satellite down-conversion signal is coupled and input through a capacitor C12, and a signal mixing part is formed by a printed line and R4 and is output through a port; meanwhile, the direct current power supply of the whole machine is input through an L/R polarized voltage port.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (1)
1. A household satellite down converter for receiving Beidou signals comprises an LDO power supply part, a satellite signal receiving part and a Beidou signal receiving part, wherein the satellite signal receiving part is connected with the satellite signal down conversion part, the satellite signal down conversion part is connected with a satellite receiving separation filtering part, the satellite receiving separation filtering part and the output end of the Beidou signal receiving part are connected with a printed line radio frequency signal mixing part, and the LDO power supply part provides power supply voltage; the satellite receiving, separating and filtering part comprises a capacitor C17 connected with the satellite signal down-conversion part, the capacitor C17 is connected with a first end of an inductor L5, a second end of the inductor L5 is connected with an inductor L8 and a capacitor C24 in sequence and then grounded, a second end of the inductor L5 is also connected with a printed board on-board inductor LY1, a printed board on-board inductor LY2 and a printed board on-board inductor LY3 in sequence, a node between the printed board on-board inductor LY1 and the printed board on-board inductor LY2 is connected with an inductor L9 and a capacitor C30 in sequence and then grounded, a node between the printed board on-board inductor LY2 and the printed board on-board inductor LY3 is connected with an inductor L12 and a capacitor C31 in sequence and then grounded, and the printed board on-board inductor LY3 is connected with first ends of an inductor L10 and an inductor L7 respectively, the inductor L10 is grounded through a capacitor C25, the second end of the inductor L7 is grounded after being connected with a capacitor C19, the second end of the inductor L7 is also connected with the first end of the inductor L4, the second end of the inductor L4 is output to a printed line radio frequency signal mixing part, the printed line radio frequency signal mixing part is composed of a capacitor C29, a capacitor C12, a resistor R4 and a printed line, a Beidou signal output by the Beidou signal receiving part is coupled and input to the printed line radio frequency signal mixing part through the capacitor C29, a satellite down-conversion signal output by the satellite receiving and separating filtering part is coupled and input through the capacitor C12, and the printed line and the resistor R4 form a signal mixing part and are output through a port;
a left-handed signal output by a circular polarization receiving pin of the satellite signal receiving part is connected with a low-noise high-gain amplifier Q1, and the output end of the low-noise high-gain amplifier Q1 is connected with the first end of a capacitor C14; the right-hand signal output by the circularly polarized receiving pin is connected with a low-noise high-gain amplifier Q3, and the output end of the low-noise high-gain amplifier Q3 is connected with the first end of a capacitor C21; the second end of the capacitor C14 and the second end of the capacitor C21 are connected with the input end of a low-noise high-gain amplifier Q2 together, the output end of the low-noise high-gain amplifier Q2 is connected with a satellite signal down-conversion part after being connected with a capacitor C16, and the voltage states of the low-noise high-gain amplifier Q1 and the low-noise high-gain amplifier Q3 are controlled by the output of the satellite signal down-conversion part and are used for controlling signal switching;
the satellite signal down-conversion part comprises a down-conversion chip, the signal input end of the down-conversion chip is connected with the capacitor C16, pins 4 and 5 of the down-conversion chip are respectively connected with the G pole and the D pole of the low-noise high-gain amplifier Q3, pins 17 and 18 of the down-conversion chip are respectively connected with the G pole and the D pole of the low-noise high-gain amplifier Q1, pins 8 of the down-conversion chip are respectively connected with the first end of the resistor R7 and the first end of the resistor R8, the second end of the resistor R7 is connected with the LDO power supply part, and the second end of the resistor R8 is grounded; the pin 10 of the down-conversion chip is connected with a capacitor C22 and then is grounded or suspended, and the output end of the down-conversion chip is connected with the satellite receiving, separating and filtering part;
the big dipper signal reception part includes PCB board and carries the antenna, PCB board carries the antenna connection inductance L11's first end, inductance L11's second end is connected the input of big dipper amplifier, big dipper wave filter is connected to big dipper amplifier's output, export to the printed wiring radio frequency signal mixed part behind electric capacity C28 is connected to big dipper wave filter's output.
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| CN202110802392.3A CN113541771B (en) | 2021-07-15 | 2021-07-15 | Satellite down converter for receiving Beidou signal for households |
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| CN202110802392.3A CN113541771B (en) | 2021-07-15 | 2021-07-15 | Satellite down converter for receiving Beidou signal for households |
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| CN113541771B true CN113541771B (en) | 2022-10-28 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031878A (en) * | 1997-02-28 | 2000-02-29 | Maxim Integrated Products, Inc. | Direct-conversion tuner integrated circuit for direct broadcast satellite television |
| JP2001168751A (en) * | 1999-10-01 | 2001-06-22 | Sharp Corp | Satellite broadcast reception system and low noise block down converter and satellite broadcast receiver used in satellite broadcast reception system |
| CN104767948A (en) * | 2015-04-10 | 2015-07-08 | 无锡市晶源微电子有限公司 | Satellite reception tuner LNB biasing circuit |
| CN105403898A (en) * | 2015-12-03 | 2016-03-16 | 天津七六四通信导航技术有限公司 | Radio frequency receiving channel circuit for realizing anti-interference antenna of satellite navigation and method |
| CN106060678A (en) * | 2016-02-18 | 2016-10-26 | 泰斗微电子科技有限公司 | Direct-broadcast satellite television broadcast receiving system LNB (Low Noise Block) module and satellite television set top box |
| CN106412467A (en) * | 2016-08-26 | 2017-02-15 | 李燕如 | Low-pass filter, LNB module and signal processing method |
| CN208638350U (en) * | 2018-08-08 | 2019-03-22 | 珠海市美宸电子科技有限公司 | A kind of CASS feed integration satellite low-converter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003143028A (en) * | 2001-11-01 | 2003-05-16 | Sharp Corp | Low-noise converter |
| CA2976742A1 (en) * | 2015-12-21 | 2017-06-15 | Genetec Inc. | Vehicle positioning with rfid tags |
-
2021
- 2021-07-15 CN CN202110802392.3A patent/CN113541771B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031878A (en) * | 1997-02-28 | 2000-02-29 | Maxim Integrated Products, Inc. | Direct-conversion tuner integrated circuit for direct broadcast satellite television |
| JP2001168751A (en) * | 1999-10-01 | 2001-06-22 | Sharp Corp | Satellite broadcast reception system and low noise block down converter and satellite broadcast receiver used in satellite broadcast reception system |
| CN104767948A (en) * | 2015-04-10 | 2015-07-08 | 无锡市晶源微电子有限公司 | Satellite reception tuner LNB biasing circuit |
| CN105403898A (en) * | 2015-12-03 | 2016-03-16 | 天津七六四通信导航技术有限公司 | Radio frequency receiving channel circuit for realizing anti-interference antenna of satellite navigation and method |
| CN106060678A (en) * | 2016-02-18 | 2016-10-26 | 泰斗微电子科技有限公司 | Direct-broadcast satellite television broadcast receiving system LNB (Low Noise Block) module and satellite television set top box |
| CN106412467A (en) * | 2016-08-26 | 2017-02-15 | 李燕如 | Low-pass filter, LNB module and signal processing method |
| CN208638350U (en) * | 2018-08-08 | 2019-03-22 | 珠海市美宸电子科技有限公司 | A kind of CASS feed integration satellite low-converter |
Non-Patent Citations (2)
| Title |
|---|
| 直播卫星北斗户户通一体化下变频器关键技术研究;孙功宪;《卫星与网络》;20190331(第03期);第70-71页 * |
| 直播星卫星下变频器技术研究和探讨;丁爱国;《广播与电视技术》;20111231;第215-220页 * |
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Address after: 537000 Ganhua Industrial Park, qintang District, Guigang City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi chuitong Electronic Technology Co.,Ltd. Address before: 537000 Ganhua Industrial Park, qintang District, Guigang City, Guangxi Zhuang Autonomous Region Patentee before: Guangxi Jinwangtong Electronic Technology Co.,Ltd. |