CN105959002A - Wireless signal emission system of aviation communication - Google Patents
Wireless signal emission system of aviation communication Download PDFInfo
- Publication number
- CN105959002A CN105959002A CN201610330726.0A CN201610330726A CN105959002A CN 105959002 A CN105959002 A CN 105959002A CN 201610330726 A CN201610330726 A CN 201610330726A CN 105959002 A CN105959002 A CN 105959002A
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- CN
- China
- Prior art keywords
- resistance
- outfan
- amplifier
- loop filter
- electric capacity
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
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- Oscillators With Electromechanical Resonators (AREA)
- Transmitters (AREA)
Abstract
The present invention discloses a wireless signal emission system of aviation communication. The wireless signal emission system comprises a signal input port, a filter, a high frequency signal generation circuit, a modulator, a power amplifier (PA) and an emission antenna. The input port is connected with the input end of the filter, and the output ends of the filter and the high frequency signal generation circuit are connected with the modulator separately. The output end of the modulator is connected with the PA, the output end of the PA is connected with the emission antenna, and the high frequency signal generation circuit comprises a crystal oscillation circuit, a phase-frequency detector, a charge pump, a loop filter and a voltage-controlled oscillator. According to the wireless signal emission system of aviation communication provided by the present invention, a high-frequency signal generated by the high frequency signal generation circuit is stable, and the work stability of the wireless signal emission system is guaranteed.
Description
Technical field
The present invention relates to the wireless signal transmission system of a kind of air communications.
Background technology
Wireless signal transmission system is the key component in communication system, and just because of wireless signal transmission system, information just can be processed to be the signal of applicable transmission, is then sent by antenna and is transmitted.
In air communications, the requirement to the frequency of wireless signal transmission system is increasingly stricter, and signal modulation is extremely important, it is ensured that for the high-frequency signal source stability of modulation, just become the emphasis direction of present stage research.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that the wireless signal transmission system of a kind of air communications, the high-frequency signal that high-frequency signal produces circuit evolving is stable, it is ensured that the stability of the work of wireless signal transmission system.
It is an object of the invention to be achieved through the following technical solutions: the wireless signal transmission system of a kind of air communications, it is characterised in that: include signal input port, wave filter, high-frequency signal generation circuit, manipulator, power amplifier PA and launch antenna；Input port is connected with the input of wave filter；The outfan of wave filter and the outfan of high-frequency signal generation circuit are connected with manipulator respectively；The outfan power amplifier PA of manipulator connects, and the outfan of power amplifier PA is connected with launching antenna；
Described high frequency generation circuit includes crystal oscillating circuit, phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator, the outfan of crystal oscillating circuit is connected with crystal oscillating circuit, phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator respectively, the outfan of crystal oscillating circuit is connected with the first input end of phase frequency detector, the outfan of phase frequency detector passes sequentially through electric charge pump and loop filter is connected with voltage controlled oscillator, and the outfan of voltage controlled oscillator the second input with manipulator and phase frequency detector respectively is connected；
Further, the second input of phase frequency detector is feedback signal input terminal；
Described crystal oscillating circuit includes the first inductance L1, crystal oscillator X, the first resistance R1 and the first electric capacity C1；The power input of crystal oscillator X is connected to working power by the first inductance L1, and the NC end of crystal oscillator X is unsettled, the earth terminal ground connection of crystal oscillator X, and the outfan of crystal oscillator X is connected with phase frequency detector by the first resistance R1；It is additionally provided with ground capacity between outfan and the first resistance R1 of crystal oscillator X；
Described loop filter includes that described loop filter includes amplifier A1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4；The reverse input end of amplifier A1 is connected with the signal input part of loop filter；The positive input of amplifier A1 is connected to working power by the 4th resistance R4, and one end of the 5th resistance R5 is connected between the 4th resistance R4 and the positive input of amplifier A1, the other end ground connection of the 5th resistance R5；One end of second resistance R2 is connected with the reverse input end of amplifier A1；The other end of the second resistance R2 is connected to the outfan of amplifier A1 by the 3rd electric capacity C3；Circuit and the second electric capacity C2 of the second resistance R2 and the 3rd electric capacity C3 composition are in parallel；And second the two ends of electric capacity C2 be connected with amplifier A1 reverse input end and outfan respectively；The outfan of amplifier A1 is connected to the signal output part of loop filter by the 3rd resistance R3；It is additionally provided with ground capacity C4 between 3rd resistance R3 and the signal output part of loop filter.
Described phase frequency detector uses ultrahigh speed phase frequency detector AD9901.
Described crystal oscillator X is the active crystal oscillator of 20MHZ.
The invention has the beneficial effects as follows: high-frequency signal produces circuit and uses active crystal oscillator, signal quality is good, connected mode is simple, during high-frequency signal produces circuit simultaneously, it is provided with phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator, the high-frequency signal of output is stable, and the stability for the work of wireless signal transmission system provides guarantee.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention；
Fig. 2 is the schematic diagram of crystal oscillating circuit；
Fig. 3 is the structural representation of loop filter.
Detailed description of the invention
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to the following stated.
As it is shown in figure 1, the wireless signal transmission system of a kind of air communications, it is characterised in that: include signal input port, wave filter, high-frequency signal generation circuit, manipulator, power amplifier PA and launch antenna；Input port is connected with the input of wave filter；The outfan of wave filter and the outfan of high-frequency signal generation circuit are connected with manipulator respectively；The outfan power amplifier PA of manipulator connects, and the outfan of power amplifier PA is connected with launching antenna；
Described high frequency generation circuit includes crystal oscillating circuit, phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator, the outfan of crystal oscillating circuit is connected with crystal oscillating circuit, phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator respectively, the outfan of crystal oscillating circuit is connected with the first input end of phase frequency detector, the outfan of phase frequency detector passes sequentially through electric charge pump and loop filter is connected with voltage controlled oscillator, and the outfan of voltage controlled oscillator the second input with manipulator and phase frequency detector respectively is connected；
Further, the second input of phase frequency detector is feedback signal input terminal；First input end is external signal input terminals.
Further, phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator have substantially constituted a charge pump phase locking loop circuit so that the high-frequency signal of output is stable, and the stability for the work of wireless signal transmission system provides guarantee.
As in figure 2 it is shown, described crystal oscillating circuit includes the first inductance L1, crystal oscillator X, the first resistance R1 and the first electric capacity C1；The power input of crystal oscillator X is connected to working power by the first inductance L1, and the NC end of crystal oscillator X is unsettled, the earth terminal ground connection of crystal oscillator X, and the outfan of crystal oscillator X is connected with phase frequency detector by the first resistance R1；It is additionally provided with ground capacity between outfan and the first resistance R1 of crystal oscillator X；
As it is shown on figure 3, described loop filter includes that described loop filter includes amplifier A1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4；The reverse input end of amplifier A1 is connected with the signal input part of loop filter；The positive input of amplifier A1 is connected to working power by the 4th resistance R4, and one end of the 5th resistance R5 is connected between the 4th resistance R4 and the positive input of amplifier A1, the other end ground connection of the 5th resistance R5；One end of second resistance R2 is connected with the reverse input end of amplifier A1；The other end of the second resistance R2 is connected to the outfan of amplifier A1 by the 3rd electric capacity C3；Circuit and the second electric capacity C2 of the second resistance R2 and the 3rd electric capacity C3 composition are in parallel；And second the two ends of electric capacity C2 be connected with amplifier A1 reverse input end and outfan respectively；The outfan of amplifier A1 is connected to the signal output part of loop filter by the 3rd resistance R3；It is additionally provided with ground capacity C4 between 3rd resistance R3 and the signal output part of loop filter.
Described crystal oscillator X be frequency be more than 10MHZ, can be such as the active crystal oscillator of 20MHZ or 30MHZ, can select according to concrete communication environment.
Phase frequency detector uses a key property of ultrahigh speed phase frequency detector AD9901, AD9901 to be can to input with medium standard frequency frequency ratio relatively phase/frequency, and without pre-divider, has saved the cost of phase-locked loop circuit, by its complexity low；In loop filter, the filter network that the second electric capacity C2, the 3rd electric capacity C3 and the second resistance R2 form is arranged on the feedback circuit of amplifier A1, it is achieved low-pass filtering function；Meanwhile, the filter network being made up of the 3rd resistance R3 and the 4th electric capacity is filtered further.
Claims (4)
1. the wireless signal transmission system of an air communications, it is characterised in that: include signal input port, wave filter, high-frequency signal generation circuit, manipulator, power amplifier PA and launch antenna；Input port is connected with the input of wave filter；The outfan of wave filter and the outfan of high-frequency signal generation circuit are connected with manipulator respectively；The outfan power amplifier PA of manipulator connects, and the outfan of power amplifier PA is connected with launching antenna；
Described high frequency generation circuit includes crystal oscillating circuit, phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator, the outfan of crystal oscillating circuit is connected with crystal oscillating circuit, phase frequency detector, electric charge pump, loop filter and voltage controlled oscillator respectively, the outfan of crystal oscillating circuit is connected with the first input end of phase frequency detector, the outfan of phase frequency detector passes sequentially through electric charge pump and loop filter is connected with voltage controlled oscillator, and the outfan of voltage controlled oscillator the second input with manipulator and phase frequency detector respectively is connected；
Described crystal oscillating circuit includes the first inductance L1, crystal oscillator X, the first resistance R1 and the first electric capacity C1；The power input of crystal oscillator X is connected to working power by the first inductance L1, and the NC end of crystal oscillator X is unsettled, the earth terminal ground connection of crystal oscillator X, and the outfan of crystal oscillator X is connected with phase frequency detector by the first resistance R1；It is additionally provided with ground capacity between outfan and the first resistance R1 of crystal oscillator X.
The wireless signal transmission system of a kind of air communications the most according to claim 1, it is characterised in that: described loop filter includes that described loop filter includes amplifier A1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4；The reverse input end of amplifier A1 is connected with the signal input part of loop filter；The positive input of amplifier A1 is connected to working power by the 4th resistance R4, and one end of the 5th resistance R5 is connected between the 4th resistance R4 and the positive input of amplifier A1, the other end ground connection of the 5th resistance R5；One end of second resistance R2 is connected with the reverse input end of amplifier A1；The other end of the second resistance R2 is connected to the outfan of amplifier A1 by the 3rd electric capacity C3；Circuit and the second electric capacity C2 of the second resistance R2 and the 3rd electric capacity C3 composition are in parallel；And second the two ends of electric capacity C2 be connected with amplifier A1 reverse input end and outfan respectively；The outfan of amplifier A1 is connected to the signal output part of loop filter by the 3rd resistance R3；It is additionally provided with ground capacity C4 between 3rd resistance R3 and the signal output part of loop filter.
The wireless signal transmission system of a kind of air communications the most according to claim 1, it is characterised in that: described phase frequency detector uses ultrahigh speed phase frequency detector AD9901.
The wireless signal transmission system of a kind of air communications the most according to claim 1, it is characterised in that: described crystal oscillator X is the active crystal oscillator of 20MHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330726.0A CN105959002A (en) | 2016-05-18 | 2016-05-18 | Wireless signal emission system of aviation communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330726.0A CN105959002A (en) | 2016-05-18 | 2016-05-18 | Wireless signal emission system of aviation communication |
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| Publication Number | Publication Date |
|---|---|
| CN105959002A true CN105959002A (en) | 2016-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330726.0A Pending CN105959002A (en) | 2016-05-18 | 2016-05-18 | Wireless signal emission system of aviation communication |
Country Status (1)
| Country | Link |
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| CN (1) | CN105959002A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525245A (en) * | 2018-11-07 | 2019-03-26 | 深圳扬兴科技有限公司 | A kind of programmable oscillator |
Citations (7)
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| JP2006128945A (en) * | 2004-10-27 | 2006-05-18 | Tamura Seisakusho Co Ltd | Portable telephone communication suppression system, method and program for controlling same, and channel suppressing circuit |
| CN102273079A (en) * | 2009-01-08 | 2011-12-07 | 松下电器产业株式会社 | Integrator circuit and ΔΣ modulator including the same |
| CN202121571U (en) * | 2011-06-16 | 2012-01-18 | 奥维通信股份有限公司 | Digital repeater zero intermediate frequency receiver |
| CN202364176U (en) * | 2011-11-21 | 2012-08-01 | 北京东方广视科技股份有限公司 | Clock circuit |
| CN202978895U (en) * | 2012-12-28 | 2013-06-05 | 中国电子科技集团公司第五十四研究所 | Low phase noise frequency synthesizer |
| CN105099537A (en) * | 2014-05-08 | 2015-11-25 | 中国科学院空间科学与应用研究中心 | Digital transmission sender used for satellite |
| CN205883202U (en) * | 2016-05-18 | 2017-01-11 | 成都福兰特电子技术股份有限公司 | Aeronautical communication's radio signal send system |
-
2016
- 2016-05-18 CN CN201610330726.0A patent/CN105959002A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006128945A (en) * | 2004-10-27 | 2006-05-18 | Tamura Seisakusho Co Ltd | Portable telephone communication suppression system, method and program for controlling same, and channel suppressing circuit |
| CN102273079A (en) * | 2009-01-08 | 2011-12-07 | 松下电器产业株式会社 | Integrator circuit and ΔΣ modulator including the same |
| CN202121571U (en) * | 2011-06-16 | 2012-01-18 | 奥维通信股份有限公司 | Digital repeater zero intermediate frequency receiver |
| CN202364176U (en) * | 2011-11-21 | 2012-08-01 | 北京东方广视科技股份有限公司 | Clock circuit |
| CN202978895U (en) * | 2012-12-28 | 2013-06-05 | 中国电子科技集团公司第五十四研究所 | Low phase noise frequency synthesizer |
| CN105099537A (en) * | 2014-05-08 | 2015-11-25 | 中国科学院空间科学与应用研究中心 | Digital transmission sender used for satellite |
| CN205883202U (en) * | 2016-05-18 | 2017-01-11 | 成都福兰特电子技术股份有限公司 | Aeronautical communication's radio signal send system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525245A (en) * | 2018-11-07 | 2019-03-26 | 深圳扬兴科技有限公司 | A kind of programmable oscillator |
| CN109525245B (en) * | 2018-11-07 | 2023-04-25 | 深圳扬兴科技有限公司 | Programmable oscillator |
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Application publication date: 20160921 |
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