CN102594392A - Frequency-spectrum inversion transformation system - Google Patents
Frequency-spectrum inversion transformation system Download PDFInfo
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- CN102594392A CN102594392A CN2012100616870A CN201210061687A CN102594392A CN 102594392 A CN102594392 A CN 102594392A CN 2012100616870 A CN2012100616870 A CN 2012100616870A CN 201210061687 A CN201210061687 A CN 201210061687A CN 102594392 A CN102594392 A CN 102594392A
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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 a kind of spectrum inversion transformation system particularly.
Background technology
At present; Each common carrier requires to have nothing in common with each other for the spectral phase in the communication link; Cause in the networking of letter machine, need using its special-purpose communication equipment, to guarantee the consistency of signal spectrum in the communication link according to communication equipment manufacturer's difference.In case the equipment that uses other communication equipment manufacturer to provide can't guarantee that this equipment can provide the frequency spectrum identical with original equipment in communication link, because can't satisfy the requirement of common carrier to spectral phase.In this case, only, can't select other to have the communication equipment of premium properties because the difference of spectral phase has just limited to be selected the variation of communication equipment.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned prior art and a kind of spectrum inversion transformation system is provided, and this system is to different communication equipment, and the signal of its output is carried out the spectrum inversion conversion, make realize between the distinct device in the data communication network compatible.
Realize that the technical scheme that the object of the invention adopts is: a kind of spectrum inversion transformation system comprises:
Antenna is used to transmit and receive signal;
Transmission channel, transmitting transfers to said antenna through behind this transmission channel;
Receive path, the signal that said antenna receives is exported behind this receive path;
It is characterized in that, also comprise:
First frequency mixer, it is connected in the said transmission channel, is used for the control to the phase place that transmits;
The first frequency source is connected with said first frequency mixer, and it is exported first signal and enters into said first frequency mixer;
Second frequency mixer, it is connected in the said receive path, is used for the control to the antenna receiving signal phase place;
The second frequency source is connected with said second frequency mixer, and its output secondary signal enters into said second frequency mixer; And,
Single-chip microcomputer is connected with the second frequency source with described first frequency source respectively, and controls the signal that send in first frequency source and second frequency source respectively.
Further, this spectrum inversion transformation system also comprises:
Duplexer is connected with said transmission channel, receive path and antenna respectively, is used for isolating transmitting and received signal.
In technique scheme, said transmission channel comprises initialize signal source, first filter, first intermediate frequency amplifier and the power amplifier that is electrically connected successively, and the output of said power amplifier is connected with said duplexer;
Said receive path comprises low noise amplifier, second intermediate frequency amplifier, second filter that is electrically connected successively, and the input of said low noise amplifier is connected with said duplexer.
Further, two inputs of said first frequency mixer are connected with the first frequency source with said initialize signal source respectively, and its output is connected with the input of said first filter;
Two inputs of said second frequency mixer are connected with the output of the said second frequency source and second filter respectively.
This spectrum inversion transformation system also comprises: three-mixer, and its first input end is connected with the output of said first intermediate frequency amplifier, and its output is connected with the input of said power amplifier;
The 4th frequency mixer, its first input end is connected with the output of said low noise amplifier, and its output is connected with the input of said second intermediate frequency amplifier;
The 3rd frequency source, it is connected with second input of said three-mixer and second input of said the 4th frequency mixer respectively.
The present invention is provided with frequency mixer and frequency source at the emission path with receiving in the path respectively; Through single-chip microcomputer regulating frequency source input signal in frequency mixer; With obtain the signal identical and opposite after the mixing that transmits with the phase place that transmits, perhaps with after receiving signal mixing obtain the signal identical and opposite with phase of received signal.In addition, the present invention also passes through the frequency of single-chip microcomputer regulating frequency source input signal in frequency mixer, thereby makes the signal that obtains identical with the frequency that transmits.
Use spectrum inversion transformation system of the present invention, can carry out frequency spectrum to the equipment of different communication device fabrication manufacturer and regulate, obtain the required frequency spectrum of common carrier, make that the selection to communication equipment has diversity in the communication link.
Description of drawings
Fig. 1 is the structural representation of spectrum inversion transformation system of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment invention is further described.
As shown in Figure 1, the spectrum inversion transformation system comprises: transmission channel 1, receive path 2 and antenna 3 and duplexer 4.1 transfers to antenna 3 behind the process that the transmits transmission channel, and antenna 3 will transmit and send; Antenna 3 is exported the signal that receives behind receive path 2.
In the present embodiment, transmission channel comprises successively the signal source that is electrically connected 101, first frequency mixer 102, first filter 103, first intermediate frequency amplifier 104, three-mixer 105 and power amplifier 106, and the output of power amplifier 106 is connected with duplexer 4.Frequency mixer 102 also is 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 successively the low noise amplifier that is electrically connected 206, the 4th frequency mixer 205, second intermediate frequency amplifier 204, second filter 203, second frequency mixer 202 and output signal 201.Second frequency mixer 202 also is connected with second frequency source 207, and second frequency source 207 also is connected with single-chip microcomputer.Single-chip microcomputer is controlled the signal that send in first frequency source 107 and second frequency 207 sources respectively.
Explain respectively below transmission channel 1 and receive path 2 are how to realize that spectral phase is 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 sends of Single-chip Controlling first frequency source 107 is Flo (t)=A
2Cos (w
2T), two signals through first frequency mixer 102 after, produce signal
With
After the filtering through first filter 103, promptly obtain signal
The phase place of the signal Fin (t) that the phase place of this signal and signal source 101 are sent is opposite.
In order to obtain having the signal of certain angular frequency, the present invention can also connect three-mixer 105 in emission path 1, and the 3rd frequency source 5 that is connected with three-mixer 105.It is signal
Successively through behind first filter 103 and 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 that obtains
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 sends of Single-chip Controlling first frequency source 107 does
Two signals produce signal through behind the frequency mixer 102
With
After the filtering through first filter 103, promptly obtain signal
The phase place of this signal is identical with the phase place of the signal Fin (t) that signal source 101 is sent.
In like manner in order to obtain having the signal of certain angular frequency, the present invention can also connect three-mixer 105 in emission path 1, and the 3rd frequency source 5 that is connected with three-mixer 105.It is signal
Successively through behind second intermediate frequency amplifier 204 and 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 that obtains
Therefore, only need
Equate, like N=2, w then
2=4*w
1, promptly opposite by obtaining phase place in the transmission channel 1 of the present invention, two signals that angular frequency is identical.
In side circuit, often need become the multiple relation to the output frequency X MHz that squints to avoid output frequency with the input intermediate frequency.
Like w
2/ N+w
1+ X=w
2-w
1
Like N=2, w then
2=4*w
1+ 2*X
Claims (7)
1. spectrum inversion transformation system comprises:
Antenna is used to transmit and receive signal;
Transmission channel, transmitting transfers to said antenna through behind this transmission channel;
Receive path, the signal that said antenna receives is exported behind this receive path;
It is characterized in that, also comprise:
First frequency mixer, it is connected in the said transmission channel, is used for the control to the phase place that transmits;
The first frequency source is connected with said first frequency mixer, and it is exported first signal and enters into said first frequency mixer;
Second frequency mixer, it is connected in the said receive path, is used for the control to the antenna receiving signal phase place;
The second frequency source is connected with said second frequency mixer, and its output secondary signal enters into said second frequency mixer; And,
Single-chip microcomputer is connected with the second frequency source with described first frequency source respectively, and controls the signal that send in first frequency source and second frequency source respectively.
2. spectrum inversion transformation system according to claim 1; It is characterized in that: said transmission channel comprises the initialize signal source; This initialize signal source is connected with two inputs in said first frequency source respectively with the signal that send in the first frequency source, and the output in said first frequency source is connected with antenna; The signal that said antenna receives is connected with two inputs of said second frequency mixer respectively with the second frequency source.
3. spectrum inversion transformation system according to claim 2; It is characterized in that: be connected with first processing unit between the output in said first frequency source and the antenna, be connected with second processing unit between a signal that said antenna receives and the input of said frequency mixer.
4. spectrum inversion transformation system according to claim 3 is characterized in that:
Said first processing unit comprises first filter, first intermediate frequency amplifier and the power amplifier that is electrically connected successively, and the output of said power amplifier is connected with said antenna;
Said second processing unit comprises low noise amplifier, second intermediate frequency amplifier, second filter that is electrically connected successively, and the input of said low noise amplifier is connected with said antenna.
5. spectrum inversion transformation system according to claim 4 is characterized in that:
Two inputs of said first frequency mixer are connected with the first frequency source with said initialize signal source respectively, and its output is connected with the input of said first filter;
Two inputs of said second frequency mixer are connected with the output of the said second frequency source and second filter respectively.
6. spectrum inversion transformation system according to claim 5 is characterized in that, also comprises:
Three-mixer, its first input end is connected with the output of said first intermediate frequency amplifier, and its output is connected with the input of said power amplifier;
The 4th frequency mixer, its first input end is connected with the output of said low noise amplifier, and its output is connected with the input of said second intermediate frequency amplifier;
The 3rd frequency source, it is connected with second input of said three-mixer and second input of said the 4th frequency mixer respectively.
7. according to the arbitrary described spectrum inversion transformation system of claim 1～6, it is characterized in that, also comprise:
Duplexer is connected with said transmission channel, receive path and antenna respectively, is used for isolating transmitting and received 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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| CN102594392A true CN102594392A (en) | 2012-07-18 |
| CN102594392B CN102594392B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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| CN102594392B (en) | 2014-10-29 |
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