CN103746690A - Frequency synthesis circuit for realizing satellite navigation anti-interference antenna - Google Patents
Frequency synthesis circuit for realizing satellite navigation anti-interference antenna Download PDFInfo
- Publication number
- CN103746690A CN103746690A CN201310686218.2A CN201310686218A CN103746690A CN 103746690 A CN103746690 A CN 103746690A CN 201310686218 A CN201310686218 A CN 201310686218A CN 103746690 A CN103746690 A CN 103746690A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- inductance
- frequency amplifier
- chip
- phase
- 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
Links
Images
Landscapes
- Filters And Equalizers (AREA)
Abstract
The invention relates to a frequency synthesis circuit for realizing a satellite navigation anti-interference antenna. The frequency synthesis circuit comprises a reset chip, a single chip microcomputer, a si4133 phase-locked loop chip, an intermediate-frequency amplifier, an intermediate-frequency filter circuit, a radio frequency amplifier, a low-pass filter, a two-path passive power divider and a four-path passive power divider, wherein the reset chip is sequentially connected with the single chip microcomputer and the si4133 phase-locked loop chip, the si4133 phase-locked loop chip is connected with the intermediate-frequency amplifier and the low-pass filter, the intermediate-frequency amplifier and the intermediate-frequency filter circuit are connected to an anti-interference unit, the low-pass filter is connected with the radio frequency amplifier, and the radio frequency amplifier is connected to the four-path passive power divider through the two-path passive power divider and is connected to an up-conversion unit. The si4133 phase-locked loop chip can simultaneously generate a Beidou local oscillation signal and an anti-interference clock signal, and the cost of capital is greatly saved; and meanwhile, the adopted si4133 phase-locked loop chip has fewer pins and the pins are sparsely distributed, which is conducive to welding, thereby saving labor cost.
Description
Technical field
The present invention relates to satellite navigation, relate in particular to a kind of frequency of realizing satellite navigation anti-interference antenna and combine circuit.
Background technology
The frequency of existing satellite navigation anti-interference antenna is combined chip that circuit design used and can only produce the signal of single-frequency, and pin is many, pin distribution is close, thereby it is large to cause welding difficulty, Programming comparison complexity.
Summary of the invention
In view of defect and deficiency that prior art exists, the invention provides a kind of frequency of realizing satellite navigation anti-interference antenna and combine circuit.
The technical scheme that the present invention taked is for achieving the above object: a kind of frequency of realizing satellite navigation anti-interference antenna is combined circuit, it is characterized in that: comprise reset chip, single-chip microcomputer, si4133 phase-locked loop chip, intermediate frequency amplifier, intermediate frequency filtering circuit, radio frequency amplifier, low pass filter, the passive power splitter in the passive power splitter He Si of two-way road, wherein: reset chip is connected with single-chip microcomputer, single-chip microcomputer is connected with si4133 phase-locked loop chip, si4133 phase-locked loop chip is connected with intermediate frequency amplifier and low pass filter, intermediate frequency amplifier is connected with intermediate frequency filtering circuit, low pass filter is connected with radio frequency amplifier, intermediate frequency filtering circuit is connected to anti-interference unit, radio frequency amplifier connects the four passive power splitters in tunnel by the passive power splitter of two-way, be connected to again up-conversion unit simultaneously.
Feature of the present invention is: si4133 chip can produce the anti-interference clock signal of Big Dipper local oscillation signal and the 62MHz of 1222MHz simultaneously, has greatly saved fund cost; The si4133 chip pin simultaneously adopting is few, and pin distributes sparse, is beneficial to welding, thereby saves cost of labor.
Accompanying drawing explanation
Fig. 1 is that circuit of the present invention connects block diagram;
Fig. 2 is intermediate-frequency filter schematic diagram of the present invention;
Fig. 3 is scm software control flow chart.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
With reference to Fig. 1, reset chip model of the present invention is that ADM809SAKSZ, single-chip microcomputer model are that ATTINY13V-10SSI, intermediate frequency amplifier model are that MGA-53543, intermediate frequency filtering circuit are that LC filter (Fig. 2 is shown in by circuit diagram), low pass filter model are that LFCN-80, radio frequency amplifier model are that the passive power splitter model of MGA-53543, two-way is that SCN-2-15, the four passive power splitter models in tunnel are WP4N+.
With reference to Fig. 2, intermediate frequency filtering circuit of the present invention comprises inductance L 14, inductance L 15, inductance L 16, inductance L 17, capacitor C 92, capacitor C 93, capacitor C 94, capacitor C 95, capacitor C 96, capacitor C 97, capacitor C 98, capacitor C 99, capacitor C 100 and capacitor C 101, wherein: inductance L 14, capacitor C 92, capacitor C 93, on the holding wire that it is 62MHz that one end of capacitor C 94 and inductance L 15 is connected to by intermediate frequency amplifier output frequency, inductance L 14, capacitor C 92, ground connection after the other end of capacitor C 93 and capacitor C 94 connects, the other end of inductance L 15 connects one end of capacitor C 95, the other end of capacitor C 95 and inductance L 16, capacitor C 96, one end of capacitor C 97 and capacitor C 98 connects, and the one end that connects capacitor C 99 and capacitor C 100 after being connected with one end of inductance L 17 again connects simultaneously, inductance L 16, capacitor C 96, ground connection after the other end of capacitor C 97 and capacitor C 98 connects, the other end of inductance L 17 connects one end of capacitor C 101, the other end ground connection of capacitor C 101 after being connected with the other end of capacitor C 99 and capacitor C 100.
Above intermediate frequency filtering circuit is LC filter, and its effect mainly filters 62MHz harmonic wave.
With reference to Fig. 3, Fig. 3 is Single-chip Controlling flow chart.Utilize single-chip microcomputer and reset circuit thereof to produce 1222MHz signal and anti-interference clock signal by programming Control si4133 chip simultaneously, clock signal is exported to anti-interference unit by intermediate frequency amplifier, intermediate frequency filtering circuit successively, and LNA and channel unit that 1222MHz signal is the Big Dipper by low pass filter, radio frequency amplifier, the two passive power splitters in tunnel, the four passive power splitters in tunnel successively provide local oscillation signal.
The present invention only uses Liao Yi road RF (1222MHz) He Yi road IF (62MHz) signal.Intermediate-freuqncy signal 62MHz exports anti-interference unit to by intermediate frequency amplifier and intermediate frequency filtering circuit, as clock signal.Radiofrequency signal 1222MHz first passes through low pass filter, reduce its harmonic signal, at process radio frequency amplifier and the passive power splitter of two-way, the first via is as the local oscillation signal of up-converter circuit, the second tunnel again through the four passive power splitters in tunnel as satellite navigation anti-interference antenna other module Si road BD local oscillation signal.
Single-chip microcomputer and reset chip thereof are by spi bus control phase-locked loop chip si4133, phase-locked loop chip si4133 contains inside voltage controlled oscillator, loop filter, phase discriminator, power splitter and programmable power-off setting, by three complete phase-locked loop circuits of inner spi bus composition.
Phase-locked loop chip si4133 output-index is as shown in table 1:
Table 1
Claims (2)
1. a frequency of realizing satellite navigation anti-interference antenna is combined circuit, it is characterized in that: comprise reset chip, single-chip microcomputer, si4133 phase-locked loop chip, intermediate frequency amplifier, intermediate frequency filtering circuit, radio frequency amplifier, low pass filter, the passive power splitter in the passive power splitter He Si of two-way road, wherein: reset chip is connected with single-chip microcomputer, single-chip microcomputer is connected with si4133 phase-locked loop chip, si4133 phase-locked loop chip is connected with intermediate frequency amplifier and low pass filter, intermediate frequency amplifier is connected with intermediate frequency filtering circuit, low pass filter is connected with radio frequency amplifier, intermediate frequency filtering circuit is connected to anti-interference unit, radio frequency amplifier connects the four passive power splitters in tunnel by the passive power splitter of two-way, be connected to again up-conversion unit simultaneously.
2. a kind of frequency of realizing satellite navigation anti-interference antenna according to claim 1 is combined circuit, it is characterized in that: described intermediate frequency filtering circuit comprises inductance L 14, inductance L 15, inductance L 16, inductance L 17, capacitor C 92, capacitor C 93, capacitor C 94, capacitor C 95, capacitor C 96, capacitor C 97, capacitor C 98, capacitor C 99, capacitor C 100 and capacitor C 101, wherein: inductance L 14, capacitor C 92, capacitor C 93, on the holding wire that it is 62MHz that one end of capacitor C 94 and inductance L 15 is connected to by intermediate frequency amplifier output frequency, inductance L 14, capacitor C 92, ground connection after the other end of capacitor C 93 and capacitor C 94 connects, the other end of inductance L 15 connects one end of capacitor C 95, the other end of capacitor C 95 and inductance L 16, capacitor C 96, one end of capacitor C 97 and capacitor C 98 connects, and the one end that connects capacitor C 99 and capacitor C 100 after being connected with one end of inductance L 17 again connects simultaneously, inductance L 16, capacitor C 96, ground connection after the other end of capacitor C 97 and capacitor C 98 connects, the other end of inductance L 17 connects one end of capacitor C 101, the other end ground connection of capacitor C 101 after being connected with the other end of capacitor C 99 and capacitor C 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686218.2A CN103746690A (en) | 2013-12-16 | 2013-12-16 | Frequency synthesis circuit for realizing satellite navigation anti-interference antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686218.2A CN103746690A (en) | 2013-12-16 | 2013-12-16 | Frequency synthesis circuit for realizing satellite navigation anti-interference antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103746690A true CN103746690A (en) | 2014-04-23 |
Family
ID=50503689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310686218.2A Pending CN103746690A (en) | 2013-12-16 | 2013-12-16 | Frequency synthesis circuit for realizing satellite navigation anti-interference antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103746690A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750001A (en) * | 2015-03-25 | 2015-07-01 | 天津七六四通信导航技术有限公司 | Frequency synthesizing circuit for achieving satellite navigation anti-interference antenna |
| CN105406860A (en) * | 2015-10-20 | 2016-03-16 | 北京中科飞鸿科技有限公司 | High precision output single-chip microcomputer phase-locked loop rapid frequency source |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6693980B1 (en) * | 2000-09-18 | 2004-02-17 | Telasic Communications, Inc. | Wideband fast-hopping receiver front-end and mixing method |
| CN202183456U (en) * | 2011-08-12 | 2012-04-04 | 河北晶禾电子技术有限公司 | Anti-interference antenna of compass satellite navigation receiving equipment |
| CN103117767A (en) * | 2013-01-15 | 2013-05-22 | 武汉大学 | Multi-mode multi-frequency global navigational satellite system receiver radio frequency front end device |
| CN103209004A (en) * | 2013-04-07 | 2013-07-17 | 海能达通信股份有限公司 | Multi-slot transceiver |
| CN203135808U (en) * | 2013-01-11 | 2013-08-14 | 京信通信系统（中国）有限公司 | Out-of-band high-restrain LC filter |
| CN203722606U (en) * | 2013-12-16 | 2014-07-16 | 天津七六四通信导航技术有限公司 | Frequency synthesis circuit for realizing satellite navigation anti-interference antenna |
-
2013
- 2013-12-16 CN CN201310686218.2A patent/CN103746690A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6693980B1 (en) * | 2000-09-18 | 2004-02-17 | Telasic Communications, Inc. | Wideband fast-hopping receiver front-end and mixing method |
| CN202183456U (en) * | 2011-08-12 | 2012-04-04 | 河北晶禾电子技术有限公司 | Anti-interference antenna of compass satellite navigation receiving equipment |
| CN203135808U (en) * | 2013-01-11 | 2013-08-14 | 京信通信系统（中国）有限公司 | Out-of-band high-restrain LC filter |
| CN103117767A (en) * | 2013-01-15 | 2013-05-22 | 武汉大学 | Multi-mode multi-frequency global navigational satellite system receiver radio frequency front end device |
| CN103209004A (en) * | 2013-04-07 | 2013-07-17 | 海能达通信股份有限公司 | Multi-slot transceiver |
| CN203722606U (en) * | 2013-12-16 | 2014-07-16 | 天津七六四通信导航技术有限公司 | Frequency synthesis circuit for realizing satellite navigation anti-interference antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750001A (en) * | 2015-03-25 | 2015-07-01 | 天津七六四通信导航技术有限公司 | Frequency synthesizing circuit for achieving satellite navigation anti-interference antenna |
| CN105406860A (en) * | 2015-10-20 | 2016-03-16 | 北京中科飞鸿科技有限公司 | High precision output single-chip microcomputer phase-locked loop rapid frequency source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203722606U (en) | Frequency synthesis circuit for realizing satellite navigation anti-interference antenna | |
| CN204679643U (en) | A kind of Novel GPS/Beidou satellite navigation displacement monitoring receiving system | |
| CN106487401A (en) | A kind of AIS receiver based on Super heterodyne principle | |
| CN103746690A (en) | Frequency synthesis circuit for realizing satellite navigation anti-interference antenna | |
| CN105262486A (en) | X wave band frequency synthesizer | |
| CN203039670U (en) | 1222MHz frequency synthesis unit | |
| CN108037332A (en) | Module occurs for multichannel reference clock | |
| CN104536021A (en) | Dual-mode reconfigurable radio frequency front end receiving system of GNSS (global navigation satellite system) | |
| CN204832524U (en) | Bimodulus reconfigurable GNSS radio frequency front end receiving system | |
| CN203301609U (en) | Tuner for receiving Ku wave band satellite television signals | |
| CN104270098A (en) | Microwave broadband down converter | |
| CN204089733U (en) | A kind of microwave wideband band low-converter | |
| CN205092849U (en) | X wave band frequency synthesizer | |
| CN202364176U (en) | Clock circuit | |
| CN101902287A (en) | Calibration test system, device and method of receivers | |
| CN104750001A (en) | Frequency synthesizing circuit for achieving satellite navigation anti-interference antenna | |
| CN204180050U (en) | A kind of X-band low noise benchmark local frequency source of secondary | |
| CN106411339A (en) | Radio monitoring and receiving system based on direct frequency conversion | |
| CN103259991B (en) | For receiving the dual output tuner of satellite TV signal | |
| CN207266001U (en) | A kind of generation device of multiband local oscillation signal | |
| CN205105194U (en) | A radio frequency local oscillator circuit for radio general measuring instrument | |
| CN204633752U (en) | Two-band frequency source | |
| CN204465510U (en) | The frequency source of Low phase noise frequency agility Ku wave band and structure | |
| CN203661047U (en) | A 2.4G direct down conversion receiver radio frequency front end device | |
| CN103297044A (en) | Microwave signal source and method for producing microwave signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |