CN102594392B - Frequency-spectrum inversion transformation system - Google Patents
Frequency-spectrum inversion transformation system Download PDFInfo
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- CN102594392B CN102594392B CN201210061687.0A CN201210061687A CN102594392B CN 102594392 B CN102594392 B CN 102594392B CN 201210061687 A CN201210061687 A CN 201210061687A CN 102594392 B CN102594392 B CN 102594392B
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- 238000001228 spectrum Methods 0.000 title claims abstract description 22
- 230000009466 transformation Effects 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000002955 isolation Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 13
- 230000003595 spectral effect Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
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Abstract
The invention discloses a frequency-spectrum inversion transformation system, comprising a first mixer connected in a transmission channel, a first frequency source connected with the first mixer, a second mixer connected with a receiving channel, a second frequency source connected with the second mixer, and a single chip microcomputer respectively connected with the first frequency source and the second frequency source, wherein the single chip microcomputer respectively controls signals emitted by the first frequency source and the second frequency source. According to the frequency-spectrum inversion transformation system disclosed by the invention, the signals input to the mixers from the frequency sources are adjusted by the single chip microcomputer, and the signals are mixed with transmission signals so as to obtain signals with the same phase or the reverse phase with the transmission signals, or the signals are mixed with receiving signals so as to obtain signals with the same phase or the reverse phase with the receiving signals. Furthermore, the frequency of the signals which are input to the mixers from the frequency sources is adjusted by the signal chip microcomputer, so that the obtained signals have the same frequency with the transmission signals or the receiving signals.
Description
Technical field
The present invention relates to telecommunication transmission system, refer to particularly a kind of frequency-spectrum inversion transformation system.
Background technology
At present, each common carrier requires different for the spectral phase in communication link, cause need to using its special-purpose communication equipment according to communication equipment manufacturer's difference in the networking of letter machine, to guarantee the consistency of signal spectrum in communication link.Once the equipment that uses other communication equipment manufacturer to provide, cannot guarantee that this equipment can provide the frequency spectrum identical with original equipment in communication link, because cannot meet the requirement of common carrier to spectral phase.In this case, only, because the difference of spectral phase has just limited to be selected the variation of communication equipment, cannot select other to there is the communication equipment of premium properties.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art and a kind of frequency-spectrum inversion transformation system is provided, and this system, for different communication equipment, is carried out spectrum inversion conversion to the signal of its output, makes between distinct device, to realize in data communication network compatible.
The technical scheme that realizes the object of the invention employing is: a kind of frequency-spectrum inversion transformation system comprises:
Antenna, for transmitting and receiving signal;
Transmission channel, transmits through transferring to described antenna after this transmission channel;
Receive path, the signal of described antenna reception is exported after this receive path;
It is characterized in that, also comprise:
The first frequency mixer, it is connected in described transmission channel, for the control to the phase place that transmits;
First frequency source, is connected with described the first frequency mixer, and its output first signal enters into described the first frequency mixer;
The second frequency mixer, it is connected in described receive path, for the control to antenna receiving signal phase place;
Second frequency source, is connected with described the second frequency mixer, and its output secondary signal enters into described the second frequency mixer; And,
Single-chip microcomputer, is connected with second frequency source with described first frequency source respectively, and controls respectively the signal that send in first frequency source and second frequency source.
Further, this frequency-spectrum inversion transformation system also comprises:
Duplexer, is connected with described transmission channel, receive path and antenna respectively, for isolation, transmits and receives signal.
In technique scheme, described transmission channel comprises initialize signal source, the first filter, the first intermediate frequency amplifier and the power amplifier being electrically connected to successively, and the output of described power amplifier is connected with described duplexer;
Described receive path comprises low noise amplifier, the second intermediate frequency amplifier, the second filter being electrically connected to successively, and the input of described low noise amplifier is connected with described duplexer.
Further, two inputs of described the first frequency mixer are connected with first frequency source with described initialize signal source respectively, and its output is connected with the input of described the first filter;
Two inputs of described the second frequency mixer are connected with the output of the second filter with described second frequency source respectively.
This frequency-spectrum inversion transformation system also comprises: three-mixer, and its first input end is connected with the output of described the first intermediate frequency amplifier, and its output is connected with the input of described power amplifier;
The 4th frequency mixer, its first input end is connected with the output of described low noise amplifier, and its output is connected with the input of described the second intermediate frequency amplifier;
The 3rd frequency source, it is connected with the second input of described the 4th frequency mixer with the second input of described three-mixer respectively.
The present invention arranges respectively frequency mixer and frequency source in transmitting path and receiving path, by single-chip microcomputer regulating frequency source to input signal in frequency mixer, with after the mixing that transmits, obtain the signal identical and contrary with the phase place that transmits, or with receive signal mixing after obtain the signal identical and contrary with phase of received signal.In addition, the present invention is the frequency to input signal in frequency mixer by single-chip microcomputer regulating frequency source also, thereby makes the signal obtaining identical with the frequency transmitting.
Use frequency-spectrum inversion transformation system of the present invention, can carry out frequency spectrum adjusting for the equipment of different communication device fabrication manufacturer, obtain the required frequency spectrum of common carrier, make the selection to communication equipment in communication link there is diversity.
Accompanying drawing explanation
Fig. 1 is the structural representation of frequency-spectrum inversion transformation system of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, invention is further described.
As shown in Figure 1, frequency-spectrum inversion transformation system comprises: transmission channel 1, receive path 2 and antenna 3 and duplexer 4.Transmitting after transmission channel 1 transfers to antenna 3, and antenna 3 will transmit and send; Antenna 3 is exported the signal receiving after receive path 2.
In the present embodiment, transmission channel comprises signal source 101, the first frequency mixer 102, the first filter 103, the first intermediate frequency amplifier 104, three-mixer 105 and the power amplifier 106 being electrically connected to successively, and the output of power amplifier 106 is connected with duplexer 4.Frequency mixer 102 is also connected with first frequency source 107, and first frequency source 107 is connected with single-chip microcomputer, the signal that send in Single-chip Controlling first frequency source 107.Receive path comprises low noise amplifier 206, the 4th frequency mixer 205, the second intermediate frequency amplifier 204, the second filter 203, the second frequency mixer 202 and the output signal 201 being electrically connected to successively.The second frequency mixer 202 is also connected with second frequency source 207, and second frequency source 207 is also connected with single-chip microcomputer.Single-chip microcomputer is controlled respectively the signal that send in first frequency source 107 and second frequency 207 sources.
Duplexer 4 is connected with power amplifier 106, low noise amplifier 206 and antenna 3 respectively, for isolation, transmits and receives signal.The output of its intermediate power amplifier 106 is connected with duplexer 4, and the input of low noise amplifier 206 is connected with duplexer 4.
Below illustrate respectively that transmission channel 1 and receive path 2 are that how to realize spectral phase inverted.
In transmission channel 1, obtain the signal of spectrum inversion:
The signal that signal source 101 is sent is Fin (t)=A
1cos (
w1t+ φ), the local oscillation signal that send in Single-chip Controlling first frequency source 107 is Flo (t)=A
2cos (w
2t), two signals, after the first frequency mixer 102, produce signal
With
After the filtering of the first filter 103, obtain signal
the single spin-echo of the signal Fin (t) that the phase place of this signal and signal source 101 are sent.
In order to obtain having the signal of certain angular frequency, the present invention can also connect three-mixer 105 in transmitting path 1, and the 3rd frequency source 5 being connected with three-mixer 105.It is signal
successively after the first filter 103 and the first intermediate frequency amplifier 104, with the signal Flo_ of the 3rd frequency source 5 inputs
cOM(t)=A
3cos (w
3t) carry out mixing, the signal obtaining
In transmission channel 1, obtain the not inverted signal of frequency spectrum:
The signal that signal source 101 is sent is Fin (t)=A
1cos (w
1t+ φ), the local oscillation signal that send in Single-chip Controlling first frequency source 107 is
two signals, after frequency mixer 102, produce signal
With
After the filtering of the first filter 103, obtain signal
the phase place of the signal Fin (t) that the phase place of this signal is sent with signal source 101 is identical.
In like manner, in order to obtain having the signal of certain angular frequency, the present invention can also connect three-mixer 105 in transmitting path 1, and the 3rd frequency source 5 being connected with three-mixer 105.It is signal
successively after the second intermediate frequency amplifier 204 and the first filter 203, with the signal Flo_ of the 3rd frequency source 5 inputs
cOM(t)=A
3cos (w
3t) carry out mixing, the signal obtaining
Therefore, only need
equate, as N=2, w
2=4*w
1, in transmission channel 1 of the present invention, obtain single spin-echo, two signals that angular frequency is identical.
In side circuit, often need the MHz output frequency skew X, to avoid output frequency to become multiple relation with input intermediate frequency.
As w
2/ N+w
1+ X=w
2-w
1
As N=2, w
2=4*w
1+ 2*X
Receive path 2 spectral phases are inverted or are not inverted, and its process, with above-mentioned receive path 1, repeats no more herein.
Claims (3)
1. a frequency-spectrum inversion transformation system, comprising:
Antenna, for transmitting and receiving signal;
Transmission channel, transmits through transferring to described antenna after this transmission channel;
Receive path, the signal of described antenna reception is exported after this receive path;
It is characterized in that, also comprise:
The first frequency mixer, it is connected in described transmission channel, for the control to the phase place that transmits;
First frequency source, is connected with described the first frequency mixer, and its output first signal enters into described the first frequency mixer; Between the output in described first frequency source and antenna, be connected with the first processing unit, between an input of the signal of described antenna reception and described frequency mixer, be connected with the second processing unit; Described the first processing unit comprises the first filter, the first intermediate frequency amplifier and the power amplifier being electrically connected to successively, and the output of described power amplifier is connected with described antenna; Described the second processing unit comprises low noise amplifier, the second intermediate frequency amplifier, the second filter being electrically connected to successively, and the input of described low noise amplifier is connected with described antenna;
The second frequency mixer, it is connected in described receive path, for the control to antenna receiving signal phase place;
Second frequency source, is connected with described the second frequency mixer, and its output secondary signal enters into described the second frequency mixer;
Single-chip microcomputer, is connected with second frequency source with described first frequency source respectively, and controls respectively the signal that send in first frequency source and second frequency source;
Three-mixer, its first input end is connected with the output of described the first intermediate frequency amplifier, and its output is connected with the input of described power amplifier;
The 4th frequency mixer, its first input end is connected with the output of described low noise amplifier, and its output is connected with the input of described the second intermediate frequency amplifier; And,
The 3rd frequency source, it is connected with the second input of described the 4th frequency mixer with the second input of described three-mixer respectively;
Described transmission channel comprises initialize signal source, and the signal that send with first frequency source in this initialize signal source is connected with two inputs of described the first frequency mixer respectively, and the output in described first frequency source is connected with the first frequency mixer; The signal of described the second filter output is connected with two inputs of described the second frequency mixer respectively with second frequency source.
2. frequency-spectrum inversion transformation system according to claim 1, is characterized in that:
Two inputs of described the first frequency mixer are connected with first frequency source with described initialize signal source respectively, and its output is connected with the input of described the first filter;
Two inputs of described the second frequency mixer are connected with the output of the second filter with described second frequency source respectively.
3. frequency-spectrum inversion transformation system according to claim 1 and 2, is characterized in that, also comprises:
Duplexer, is connected with described transmission channel, receive path and antenna respectively, for isolation, transmits and receives signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210061687.0A CN102594392B (en) | 2012-03-09 | 2012-03-09 | Frequency-spectrum inversion transformation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210061687.0A CN102594392B (en) | 2012-03-09 | 2012-03-09 | Frequency-spectrum inversion transformation system |
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| Publication Number | Publication Date |
|---|---|
| CN102594392A CN102594392A (en) | 2012-07-18 |
| CN102594392B true CN102594392B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210061687.0A Expired - Fee Related CN102594392B (en) | 2012-03-09 | 2012-03-09 | Frequency-spectrum inversion transformation system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118535A (en) * | 1993-10-08 | 1996-03-13 | 索尼公司 | Correcting circuit for mixing circuit, receiver using same, and frequency spectrum-inverting circuit using same |
| CN102201789A (en) * | 2010-07-14 | 2011-09-28 | 锐迪科科技有限公司 | LNB (low noise block) down-conversion chip circuit and LNB down-conversion chip as well as LNB down-conversion circuit and method |
| CN202050408U (en) * | 2011-03-25 | 2011-11-23 | 中国电子科技集团公司第五十四研究所 | Microminiature time division L waveband transceiver |
-
2012
- 2012-03-09 CN CN201210061687.0A patent/CN102594392B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118535A (en) * | 1993-10-08 | 1996-03-13 | 索尼公司 | Correcting circuit for mixing circuit, receiver using same, and frequency spectrum-inverting circuit using same |
| CN102201789A (en) * | 2010-07-14 | 2011-09-28 | 锐迪科科技有限公司 | LNB (low noise block) down-conversion chip circuit and LNB down-conversion chip as well as LNB down-conversion circuit and method |
| CN202050408U (en) * | 2011-03-25 | 2011-11-23 | 中国电子科技集团公司第五十四研究所 | Microminiature time division L waveband transceiver |
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|---|---|
| CN102594392A (en) | 2012-07-18 |
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