CN107994919A - Up-converter circuit based on duplexer - Google Patents
Up-converter circuit based on duplexer Download PDFInfo
- Publication number
- CN107994919A CN107994919A CN201711401093.9A CN201711401093A CN107994919A CN 107994919 A CN107994919 A CN 107994919A CN 201711401093 A CN201711401093 A CN 201711401093A CN 107994919 A CN107994919 A CN 107994919A
- Authority
- CN
- China
- Prior art keywords
- frequency
- module
- level
- duplexer
- local oscillation
- 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
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/106—M-ary FSK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
Abstract
The invention discloses a kind of up-converter circuit based on duplexer, mainly solve transmitting-receiving integrated small station and broadcast TV programs by satellite inconvenience existing for joint debugging test, and prior art local oscillator leakage, isolation it is low, can not monitoring room outer cell operation state the problems such as.It is based on duplex network；Including L frequency ranges input module, 10MHz reference clocks module, low frequency output module, level-one frequency mixing module, two level frequency mixing module, frequency shifts keying (FSK) module；FSK modules include modulation and demodulation submodule, primary processor control level-one, two level local frequency, and control outdoor unit by FSK modulation submodule, and demodulating submodule by FSK monitors outdoor unit.The present invention has local oscillator degree of suppression high, and isolation is high, the advantages of can monitoring outdoor unit, available in microwave telecommunication system.
Description
Technical field
The invention belongs to electronic circuit technology field, more particularly to a kind of up-converter circuit based on duplexer.
Background technology
In recent years, as the development of communication technology of satellite, satellite communication system are brought very to the work and life of people
Big facility, is increasingly favored be subject to people, at the same time the small light for satellite communication system and reduces cost
Propose higher requirement.
At present, for satellite communication system terminal more using separated mode is received and dispatched, cost is higher.The satellite communication of transceiver
Terminal then greatly reduces cost, for transmitting-receiving integrated satellite communication terminal because it shares a radio-frequency joint, receives letter
L-band number is used, transmitting signal use low frequency signal, thereby results in joint debugging of broadcasting TV programs by satellite and tests that there are inconvenience.Based on duplexer
Up-converter circuit not only can will transmitting and receive signal be isolated, can also will transmitting signal upconvert to L-band signal, protecting
While card receives and transmitting can work normally, the function of monitoring outdoor unit is taken into account, greatly facilitates joint debugging survey of broadcasting TV programs by satellite
Examination.
The content of the invention
It is an object of the invention to broadcast TV programs by satellite inconvenience existing for joint debugging test for transmitting-receiving integrated small station, propose a kind of
Up-converter circuit based on duplexer, can not only reduce local oscillator leakage interference, isolation height, while also outdoor unit can be carried out
Monitoring.
To achieve these goals, the present invention includes：
A kind of up-converter circuit based on duplexer, including,
One L frequency range input module, a low frequency output module, a 10MHz Clock reference module, also comprising one one
Level frequency mixing module, a two level frequency mixing module and a frequency shifts keying module.
As a kind of further preferred scheme of the up-converter circuit based on duplexer of the present invention, the L frequency ranges input mould
Block, including L band-pass filter of frequency band, it is spuious outside L frequency ranges for filtering out.The low frequency output module, including the filter of low frequency band logical
Ripple device, it is spuious outside low-frequency range for filtering out.
As a kind of further preferred scheme of the up-converter circuit based on duplexer of the present invention, during the 10MHz references
Clock module, including clock circuit and 10MHz filter circuits, for providing 10MHz reference clocks for local oscillator and being presented as 10MHz
Clock exports.
As a kind of further preferred scheme of the up-converter circuit based on duplexer of the present invention, the level-one is mixed mould
Block, including level-one local oscillation circuit, the first mixting circuit, the first bandpass filter, level-one local oscillation circuit are used to produce 1050MHz's
Fixed frequency local oscillation signal；First mixting circuit is used to after the low frequency signal of input is mixed with local oscillation signal export；First band
Bandpass filter is used to filter out spuious outside local oscillator leakage and the band logical in mixer output signal.
As a kind of further preferred scheme of the up-converter circuit based on duplexer of the present invention, the two level is mixed mould
Block, including two level local oscillation circuit, the second mixting circuit, the second bandpass filter；Two level local oscillation circuit is produced according to target frequency point
The local oscillation signal of changeable frequency；The signal that second mixting circuit is used to export through level-one frequency conversion is defeated after being mixed with local oscillation signal
Go out；Second bandpass filter is used to filter out spuious outside local oscillator leakage and the band logical in mixer output signal.
As a kind of further preferred scheme of the up-converter circuit based on duplexer of the present invention, the frequency shifts keying
Module, including FSK modulation submodular circuits and FSK demodulation submodular circuits, by single outside FSK modulation submodular circuits control room
Member, demodulates submodular circuits by FSK and monitors outdoor unit.
The invention has the advantages that：
1) present invention can complete the output of L frequency band signals by an interface and low frequency signal inputs；
2) present invention carries out up-conversion using two-stage frequency conversion to the low frequency signal of input, recycles bandpass filter to output
Signal is filtered, and reduces the interference of local oscillation signal, and isolation is high；
3) present invention use frequency shifts keying (FSK) module, and outdoor unit can be controlled, and can be outside monitoring room singly
First working status.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the present invention；
Fig. 2 is the functional block diagram of L frequency ranges input module in the present invention；
Fig. 3 is the functional block diagram of 10MHz reference clocks module in the present invention；
Fig. 4 is the functional block diagram of two-stage frequency mixing module in the present invention；
Fig. 5 is the functional block diagram of frequency shift keying module in the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the structure of the present invention is discussed in detail.
With reference to Fig. 1, a kind of up-converter circuit based on duplexer provided by the invention, comprising L frequency ranges input module,
10MHz reference clocks module, low frequency output module, level-one frequency mixing module, two level frequency mixing module, frequency shifts keying (FSK) mould
Block；Wherein L frequency ranges input module includes bandpass filter；10MHz reference clocks module includes clock circuit and 10MHz is filtered
Circuit；Level-one frequency mixing module, including level-one local oscillation circuit, mixting circuit, bandpass filter；Two level frequency mixing module, including two level
Local oscillation circuit, mixting circuit, filter circuit；Frequency shifts keying (FSK) module, including modulation and demodulation submodule, modulation and
Demodulate filter circuit.
The L frequency range input modules, its concrete principle block diagram is as shown in Fig. 2, including L band-pass filter of frequency band.For
It is spuious to filter out L wave sections.L-band signal is inputted from interface 2, is exported through L band-pass filter of frequency band from interface 1.
The 10MHz reference clock modules, its concrete principle block diagram as shown in figure 3, including 10MHz clock circuits and
10MHz filter circuits.10MHz clocks are produced by voltage controlled crystal oscillator, are mixed through overdrive circuit and 10MHz filter circuits for two-stage
Module provides clock reference, and exports 10MHz by interface 3 and present clock.
The low frequency output module, including low frequency bandpass filter.It is spuious outside input low frequency signal for filtering out, it is low
Frequency signal is inputted from interface 1.
As shown in figure 4, be that two-stage is mixed output circuit block diagram in the present invention, it is specific as follows：
The level-one frequency mixing module, including level-one local oscillation circuit, mixting circuit, bandpass filter.Frequency shifts keying
(FSK) mould primary processor control level-one local oscillation circuit in the block produces the local oscillation signal of fixed frequency；Mixting circuit is to input
Low frequency signal after low frequency filtering be mixed with local oscillation signal after export；Bandpass filter filters out the sheet in mixer output signal
Shake leakage and it is spuious.Signal transmission after band-pass filter gives two level frequency mixing module.
The two level frequency mixing module, including two level local oscillation circuit, mixting circuit, filter circuit.Frequency shifts keying
(FSK) mould primary processor control two level local oscillation circuit in the block produces the local oscillation signal of changeable frequency according to target frequency point；Mixing
Circuit is exported after the signal exported through level-one frequency conversion is mixed with local oscillation signal；Bandpass filter is filtered out in mixer output signal
Local oscillator leakage and spuious.Signal after band-pass filter is exported by interface 3.
Described frequency shifts keying (FSK) module, its concrete principle block diagram is as shown in figure 5, including modulation and demodulation
Modular circuit and demodulation filtering and modulated filter.Primary processor control level-one, two level local frequency, and pass through FSK modulation
Submodular circuits control outdoor unit, and demodulating submodular circuits by FSK monitors outdoor unit, its control signal is defeated from interface 3
Go out.
Apply specific embodiment in the present invention to be set forth the principle of the present invention and embodiment, above example
Explanation be only intended to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, there will be changes in specific embodiments and applications, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (6)
- A kind of 1. up-converter circuit based on duplexer, it is characterised in that：Including,One L frequency range input module, a low frequency output module, a 10MHz Clock reference module, is also mixed comprising a level-one Frequency module, a two level frequency mixing module and a frequency shifts keying module.
- 2. the up-converter circuit according to claim 1 based on duplexer, it is characterised in that：The L frequency ranges input module, It is spuious outside L frequency ranges for filtering out including L band-pass filter of frequency band.The low frequency output module, including low frequency bandpass filtering Device, it is spuious outside low-frequency range for filtering out.
- 3. the up-converter circuit according to claim 1 based on duplexer, it is characterised in that：The 10MHz reference clocks Module, including clock circuit and 10MHz filter circuits, for providing 10MHz reference clocks for local oscillator and presenting clock as 10MHz Output.
- 4. the up-converter circuit according to claim 1 based on duplexer, it is characterised in that：The level-one frequency mixing module, Including level-one local oscillation circuit, the first mixting circuit, the first bandpass filter, level-one local oscillation circuit is used to produce consolidating for 1050MHz Determine frequency local oscillation signal；First mixting circuit is used to after the low frequency signal of input is mixed with local oscillation signal export；First band logical Wave filter is used to filter out spuious outside local oscillator leakage and the band logical in mixer output signal.
- 5. the up-converter circuit according to claim 1 based on duplexer, it is characterised in that：The two level frequency mixing module, Including two level local oscillation circuit, the second mixting circuit, the second bandpass filter；Two level local oscillation circuit produces frequency according to target frequency point Variable local oscillation signal；Second mixting circuit is used to after the signal exported through level-one frequency conversion is mixed with local oscillation signal export；The Two band-pass filter is used to filter out spuious outside local oscillator leakage and the band logical in mixer output signal.
- 6. the up-converter circuit according to claim 1 based on duplexer, it is characterised in that：The frequency shifts keying mould Block, including FSK modulation submodular circuits and FSK demodulation submodular circuits, by single outside FSK modulation submodular circuits control room Member, demodulates submodular circuits by FSK and monitors outdoor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401093.9A CN107994919A (en) | 2017-12-22 | 2017-12-22 | Up-converter circuit based on duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401093.9A CN107994919A (en) | 2017-12-22 | 2017-12-22 | Up-converter circuit based on duplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107994919A true CN107994919A (en) | 2018-05-04 |
Family
ID=62039580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711401093.9A Pending CN107994919A (en) | 2017-12-22 | 2017-12-22 | Up-converter circuit based on duplexer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107994919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416787A (en) * | 2020-04-16 | 2020-07-14 | 航天恒星科技有限公司 | Modem and baseband board card |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6731946B1 (en) * | 2000-11-22 | 2004-05-04 | Ensemble Communications | System and method for timing detector measurements in a wireless communication system |
| US20070129010A1 (en) * | 2002-11-13 | 2007-06-07 | General Instrument Corporation | Control system for controlling an output signal power level of a wireless transmitter |
| CN103684520A (en) * | 2013-12-06 | 2014-03-26 | 浙江中星光电子科技有限公司 | Satellite intermediate frequency signal conversion device applied to on-board two-way communication antenna |
| CN205283531U (en) * | 2015-11-30 | 2016-06-01 | 北京遥测技术研究所 | Channel is advanced in mini -series L, broadband small step of S frequency channel |
| CN106160778A (en) * | 2016-06-21 | 2016-11-23 | 成都金本华电子有限公司 | Portable station channel box |
-
2017
- 2017-12-22 CN CN201711401093.9A patent/CN107994919A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6731946B1 (en) * | 2000-11-22 | 2004-05-04 | Ensemble Communications | System and method for timing detector measurements in a wireless communication system |
| US20070129010A1 (en) * | 2002-11-13 | 2007-06-07 | General Instrument Corporation | Control system for controlling an output signal power level of a wireless transmitter |
| CN103684520A (en) * | 2013-12-06 | 2014-03-26 | 浙江中星光电子科技有限公司 | Satellite intermediate frequency signal conversion device applied to on-board two-way communication antenna |
| CN205283531U (en) * | 2015-11-30 | 2016-06-01 | 北京遥测技术研究所 | Channel is advanced in mini -series L, broadband small step of S frequency channel |
| CN106160778A (en) * | 2016-06-21 | 2016-11-23 | 成都金本华电子有限公司 | Portable station channel box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416787A (en) * | 2020-04-16 | 2020-07-14 | 航天恒星科技有限公司 | Modem and baseband board card |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180504 |