CN104682969A - Ultrashort-wave frequency hopping transmitter - Google Patents
Ultrashort-wave frequency hopping transmitter Download PDFInfo
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- CN104682969A CN104682969A CN201310616279.1A CN201310616279A CN104682969A CN 104682969 A CN104682969 A CN 104682969A CN 201310616279 A CN201310616279 A CN 201310616279A CN 104682969 A CN104682969 A CN 104682969A
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Abstract
The present invention discloses an ultrashort-wave frequency hopping transmitter, which comprises an ultrashort-wave frequency hopping transmission module, a medium-frequency input end, a first local oscillation signal input end, a second local oscillation signal input end and a control module, wherein the frequency hopping transmission module is formed by successively connecting a power control module A, a first frequency mixing module, a SAW filtering module, a first low noise amplification module, a second frequency mixing module, a wideband numerical control electric tuning filter, a power control module, a second low noise amplification module and a power amplification module B. The present invention has the beneficial effects that: through adoption of a dual-frequency superheterodyne reception mode and the frequency selection mode of the wideband numerical control electric tuning filter and simultaneously adoption of the function control module, time-division channel control is realized; the power control response speed, the frequency hopping switching speed, the isolation and the clutter inhibiting capability of an entire machine are improved; and meanwhile, on the basis of not affecting the original functions and performance indexes of wireless communication equipment, the performance index requirements of the data transmission error code rate and the voice communication intelligibility for the wireless communication equipment are improved.
Description
Technical field
The present invention relates to ultrashort wave frequency hopping transmitter, belong to telecommunication technology field.
Background technology
At wireless communication field, communication equipment becomes increasingly complex, and high-tech content gets more and more, function from strength to strength, therefore the transmitter of Wireless Telecom Equipment is had higher requirement, requires that transmitter image frequency and clutter suppression capability are strong, input dynamic range and machine sensitivity high.On one point in the star-like wireless communication system of multiple spot, requirement system employing communication system data transmission error rates is low, speech communication intelligibility is high, in order to ensure wireless communication system communicating reliability, the power control response speed of transmitter wants fast, frequency hopping switch speed wants fast, isolation wants high, clutter suppression capability will be got well, but existing radio frequency sending set cannot meet these requirements.
Summary of the invention
The object of the present invention is to provide ultrashort wave frequency hopping transmitter, overcome the deficiencies in the prior art, complete machine power control response speed, frequency hopping switch speed, isolation, clutter suppression capability can be improved, meet wireless communication system communicating distance, data transmission error rate and the requirement of speech communication intelligibility performance index.
The object of the invention is to be achieved through the following technical solutions: ultrashort wave frequency hopping transmitter, it comprises ultrashort wave frequency hopping transmitter module, as the IF input terminal of the first input source, as the first local oscillator signal input part of the first signal source, as the second local oscillation signal input in secondary signal source and the control module as the second input source, Frequency hopping transmissions module is by connecting power control modules A successively, first frequency mixing module, sound table filtration module, first LNA module, second frequency mixing module, broadband numerical control electrically tunable filter, power control module, second LNA module and attack amplification module B and form,
Wherein, power control modules A adopts double frequency superheterodyne reception mode, power control modules A is also provided with signal input end of intermediate frequency and control signal input, first frequency mixing module is also provided with the first signal source input and the first signal source input is connected with the first local oscillator signal input part the second frequency mixing module is also provided with secondary signal source input and secondary signal source input is connected with the second local oscillation signal input, broadband numerical control electrically tunable filter and power control module are provided with control signal input, control module have three control signal outputs and respectively with control power control module, numerical control electrically tunable filter in broadband is connected with the control signal input of power control module, the output of attacking amplification module B is connected with the external world as the output of ultrashort wave frequency hopping transmitter.
Described power control modules A is also provided with auxiliary signal output and auxiliary signal output is directly connected with the signal input part of the second LNA module.
Described broadband numerical control electrically tunable filter adopts 8 bit data to control, and the response time is less than 50us, and control data adopts the communication mode of SPI.
Beneficial effect of the present invention is: the mode adopting double frequency superheterodyne reception mode and the frequency-selecting of broadband numerical control electrically tunable filter, adopt power control module simultaneously, realize time-derived channel to control, improve complete machine power control response speed, frequency hopping switch speed and isolation and clutter suppression capability.Simultaneously on the basis that can not affect the original function of Wireless Telecom Equipment and performance index, improve Wireless Telecom Equipment data transmission error rate and the requirement of speech communication intelligibility performance index.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is numerical control tuning FILTER TO CONTROL data SPI communication sequential chart of the present invention.
Wherein, 1-power control modules A, 2-first frequency mixing module, 3-sound table filtration module, 4-first LNA module, 5-second frequency mixing module, 6-broadband numerical control electrically tunable filter, 7-power control module, 8-second LNA module, 9-attacks amplification module B, 10-IF input terminal, 11-first local oscillator signal input part, 12-second local oscillation signal input, 13-control module.
Embodiment
Technical scheme of the present invention is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As Fig. 1, ultrashort wave frequency hopping transmitter, it comprises ultrashort wave frequency hopping transmitter module, as the IF input terminal 10 of the first input source, as the first local oscillator signal input part 11 of the first signal source, as the second local oscillation signal input 12 in secondary signal source and the control module 13 as the second input source, Frequency hopping transmissions module is by connecting power control modules A 1 successively, first frequency mixing module 2, sound table filtration module 3, first LNA module 4, second frequency mixing module 5, broadband numerical control electrically tunable filter 6, power control module 7, second LNA module 8 and attack amplification module B9 and form,
Wherein, power control modules A 1 adopts double frequency superheterodyne reception mode, power control modules A 1 is also provided with signal input end of intermediate frequency and control signal input, first frequency mixing module 2 is also provided with the first signal source input and the first signal source input is connected with the first local oscillator signal input part 11, second frequency mixing module 5 is also provided with secondary signal source input and secondary signal source input is connected with the second local oscillation signal input 12, broadband numerical control electrically tunable filter 6 and power control module 7 are provided with control signal input, control module 13 have three control signal outputs and respectively with control power control module 1, broadband numerical control electrically tunable filter 6 is connected with the control signal input of power control module 7, the output of attacking amplification module B9 is connected with the external world as the output of ultrashort wave frequency hopping transmitter.
Described power control modules A 1 is also provided with auxiliary signal output and auxiliary signal output is directly connected with the signal input part of the second LNA module 8.
The present invention is by adopting double frequency superheterodyne reception mode and broadband numerical control electrically tunable filter frequency-selecting technology, further increase complete machine power control response and to broadband noise and harmonic emissions rejection ability, adopt power control module to realize time-division control and radio listening silence function, adopt power control module to realize power adjustable.Complete machine power control response time≤10 μ s, frequency hopping switching time≤20 μ s, signal bandwidth internal power flatness value ranges ± 0.5dB, power control accuracy 1dB, band stray level≤-70dBc, wide band noise level≤-150dBm/Hz, harmonic emissions :≤-60dBc.
Its operation principle is as follows: the modulated intermediate frequency signal that transmitter receives from modulator-demodulator obtains the high intermediate-freuqncy signal of frequency-invariant by power control modules A 1 and with the input signal of IF input terminal 10 after the first frequency mixing module 2 mixing, through the outer clutter of sound table filtration module 3 filter out-band, after mirror image suppresses, low noise amplification is carried out through the first LNA module 4, obtain the radiofrequency signal of launching again through the second frequency mixing module 5 mixing with the input signal of the second local oscillation signal input 11, after broadband numerical control electrically tunable filter 6 frequency-selecting filtering clutter, realize after power control through power control module 7, low noise amplification is carried out through the second LNA module 8 radio frequency signal, amplify to exporting radiofrequency signal the radio frequency signal frequently obtaining stable output power again through power amplifier module B9, output to power amplifier, be transferred to up-conversion and the transmitting of antenna settling signal again.
Wherein power control module realizes time-division communication and controls, and broadband numerical control electrically tunable filter realizes frequency-selecting, and it is adjustable that power control module realizes transmitting power, and power amplifier module realizes transmitting power and amplifies.
Under frequency hopping system, control module 13 produces the instruction of broadband numerical control electrically tunable filter frequency range switching controls, broadband numerical control electrically tunable filter 6 carries out frequency fast according to control command and switches, ensure that transmitter effectively receives Frequency Hopping Signal, and obtain corresponding radiofrequency signal to the second local oscillation signal input 12 mixing of synchronous saltus step, filtering and amplification are carried out to the signal after mixing, realizes frequency hopping function.
As Fig. 2, broadband numerical control electrically tunable filter 6 can change working frequency points by digital control scheme in full frequency band, select useful signal, the outer clutter of filter out-band and noise, improve the sensitivity of complete machine, and this filter adopts 8 bit data to control, response time is less than 50us, control data adopts SPI communication mode, and control module adopts serioparallel exchange chip to realize, control signal sequential.
Transmitter circuitry is designed with power control module, and when power control control signal is effective, power control module is in conducting state, and conduction loss is lower, ensures that signal is undamped and passes through; When power control control signal is invalid, power control module is in open-circuit condition, and the isolation of circuit is very high, and signal is blocked, and transmitter no signal exports, and realizes radio listening silence function.
Transmitter circuitry is designed with power control module 7, need to send the transmitting power control signal of needs according to radio station after, control module 13 control power control module 7 produce radio station launch needed for transmitting power.
Claims (3)
1. ultrashort wave frequency hopping transmitter, it is characterized in that: it comprises ultrashort wave frequency hopping transmitter module, as the IF input terminal (10) of the first input source, as the first local oscillator signal input part (11) of the first signal source, as the second local oscillation signal input (12) in secondary signal source and the control module (13) as the second input source, Frequency hopping transmissions module is by connecting power control modules A (1) successively, first frequency mixing module (2), sound table filtration module (3), first LNA module (4), second frequency mixing module (5), broadband numerical control electrically tunable filter (6), power control module (7), second LNA module (8) and attack amplification module B(9) composition,
Wherein, power control modules A (1) adopts double frequency superheterodyne reception mode, power control modules A (1) is also provided with signal input end of intermediate frequency and control signal input, first frequency mixing module (2) is also provided with the first signal source input and the first signal source input is connected with the first local oscillator signal input part (11), second frequency mixing module (5) is also provided with secondary signal source input and secondary signal source input is connected with the second local oscillation signal input (12), broadband numerical control electrically tunable filter (6) and power control module (7) are provided with control signal input, control module (13) have three control signal outputs and respectively with control power control module (1), broadband numerical control electrically tunable filter (6) is connected with the control signal input of power control module (7), attack amplification module B(9) output be connected with the external world as the output of ultrashort wave frequency hopping transmitter.
2. ultrashort wave frequency hopping transmitter according to claim 1, is characterized in that: described power control modules A (1) is also provided with auxiliary signal output and auxiliary signal output is directly connected with the signal input part of the second LNA module (8).
3. ultrashort wave frequency hopping transmitter according to claim 1, is characterized in that: described broadband numerical control electrically tunable filter (6) adopts 8 bit data to control, and the response time is less than 50us, and control data adopts the communication mode of SPI.
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| CN201310616279.1A CN104682969B (en) | 2013-11-27 | 2013-11-27 | Ultrashort-wave frequency hopping transmitter |
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| CN104682969B CN104682969B (en) | 2017-01-18 |
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| CN1499732A (en) * | 2002-10-29 | 2004-05-26 | ��ʢ���ӹɷ�����˾ | Digital radio frequency emitter and method |
| EP1480402A1 (en) * | 2003-05-23 | 2004-11-24 | Sony Ericsson Mobile Communications AB | Automatic power control circuitry for a QAM transmitter unit of a wireless communication device |
| CN101018061A (en) * | 2007-02-08 | 2007-08-15 | 华为技术有限公司 | A method for restraining the spurious in-band and transmitter |
| CN101944924A (en) * | 2010-09-30 | 2011-01-12 | 东南大学 | Broadband MIMO radio frequency transceiving system for next-generation wireless communication network |
| CN102299684A (en) * | 2011-05-24 | 2011-12-28 | 北京恒际通科技发展有限公司 | Signal frequency conversion transmitter |
| CN203596817U (en) * | 2013-11-27 | 2014-05-14 | 贵州航天天马机电科技有限公司 | Frequency hopping transmitter |
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2013
- 2013-11-27 CN CN201310616279.1A patent/CN104682969B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1499732A (en) * | 2002-10-29 | 2004-05-26 | ��ʢ���ӹɷ�����˾ | Digital radio frequency emitter and method |
| EP1480402A1 (en) * | 2003-05-23 | 2004-11-24 | Sony Ericsson Mobile Communications AB | Automatic power control circuitry for a QAM transmitter unit of a wireless communication device |
| CN101018061A (en) * | 2007-02-08 | 2007-08-15 | 华为技术有限公司 | A method for restraining the spurious in-band and transmitter |
| CN101944924A (en) * | 2010-09-30 | 2011-01-12 | 东南大学 | Broadband MIMO radio frequency transceiving system for next-generation wireless communication network |
| CN102299684A (en) * | 2011-05-24 | 2011-12-28 | 北京恒际通科技发展有限公司 | Signal frequency conversion transmitter |
| CN203596817U (en) * | 2013-11-27 | 2014-05-14 | 贵州航天天马机电科技有限公司 | Frequency hopping transmitter |
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