CN107733454A - Small-power FAX transmitter modules - Google Patents
Small-power FAX transmitter modules Download PDFInfo
- Publication number
- CN107733454A CN107733454A CN201710881812.5A CN201710881812A CN107733454A CN 107733454 A CN107733454 A CN 107733454A CN 201710881812 A CN201710881812 A CN 201710881812A CN 107733454 A CN107733454 A CN 107733454A
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- Prior art keywords
- amplifier
- wave filter
- power
- small
- transmitter modules
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- 230000010355 oscillation Effects 0.000 claims abstract description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- 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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
- H04B1/001—Channel filtering, i.e. selecting a frequency channel within the SDR system
-
- 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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
- H04B1/0035—Channel filtering, i.e. selecting a frequency channel within a software radio system
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The invention provides small-power FAX transmitter modules, including the first wave filter, the first amplifier, the second wave filter, the second amplifier, the 3rd amplifier and antenna, the first described wave filter and the first amplifier, the second wave filter, the second amplifier, the 3rd amplifier connect with antenna successively signal, local vibration source is provided between the first amplifier and the second wave filter, described local vibration source is DDS direct synthesizers, for producing local oscillation signal；The present invention selects single-conversion structure, and using DDS as local vibration source, compared with conventional phase locked loops (PLL) mode, the easy cost of configuration simple in construction is low.Transmitter module uses independent control simultaneously, uses serial mode with PERCOM peripheral communication, can simplify communication mode and control logic.
Description
Technical field
The invention belongs to the communications field, more particularly, to small-power FAX transmitter modules.
Background technology
In the communication technology and sensory field of optic fibre, generally require on the signal that is sent at signal transmitter end superposition or
Suitable modulated signal is loaded to do corresponding modulation treatment to carrier signal, so as to be received in signal receiving end by one
The electric signal of the change of set pattern rule and convenient processing is so as to being advantageous to solve the various unlike signals received in signal receiving end
Reason is mediated to extract useful signal.And traditional signal generating apparatus is usually because its volume is big and its price is prohibitively expensive,
The factors such as its function is single in addition and use environment is limited are widely popularized use so as to cause it to be not easy, in the prior art ordinary straight
Discharge technique, or Harmonics amplification transmitting chain, using the technology to modulated intermediate frequency signal single-conversion, numerical portion complex designing.
Local vibration source uses conventional phase locked loops (PLL) mode in classical signal occurrence of equipment, structure is more complicated and meanwhile configuration also it is more difficult into
This is higher.
The content of the invention
In view of this, the present invention is directed to propose a kind of small-power FAX transmitter modules for 2MHz~30MHz.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
Small-power FAX transmitter modules, including the first wave filter, the first amplifier, the second wave filter, the second amplifier,
Three amplifiers and antenna, the first described wave filter and the first amplifier, the second wave filter, the second amplifier, the 3rd amplifier
Connected with antenna successively signal, local vibration source is provided between the first amplifier and the second wave filter, described local vibration source is that DDS is straight
Frequency synthesizer is connect, for producing local oscillation signal.
Further, the first described wave filter is 45M07B narrow-band crystal filters；The second described wave filter uses
Passive fourth order low-pass wave filter.
Further, the first described amplifier, the second amplifier are that Hittite HMC580 single-chip integration microwaves are put
Big device；3rd amplifier is low-power amplifier, using AFT05MS003N chips.
Further, described DDS direct synthesizers are also connected with microcontroller serial port, and described single-chip microcomputer is
C8051 single-chip microcomputers.
Further, the input signal of the device is 45MHz intermediate-freuqncy signals.
Further, the module uses the isolated pcb board of digital-to-analogue.
Further, the module is additionally provided with power supply, and it is transmitting chain and DDS direct synthesizers that described power supply, which is used for,
Power supply.
Relative to prior art, small-power FAX transmitter modules of the present invention have the advantage that：
(1) present invention selects single-conversion structure, and using DDS as local vibration source, with conventional phase locked loops (PLL) mode phase
Than the easy cost of configuration simple in construction is low.Independent control is used simultaneously, serial mode is used with PERCOM peripheral communication, can simplify logical
Letter mode and control logic.
(2) present invention uses local frequency source of secondary of the monolithic DDS as transmitting chain, can reduce system design and debugging,
And PCB surface product.Simultaneously PCB design using digital-to-analog circuit isolation by the way of, reduction digital and analogue signals between interfere with it is miscellaneous
Distribute and penetrate.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation described in the embodiment of the present invention；
Fig. 2 is the DDS circuit figure described in the embodiment of the present invention；
Fig. 3 is the single chip circuit figure described in the embodiment of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the invention, term " first ", " second " etc. be only used for describe purpose, and it is not intended that instruction or
Imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
One or more this feature can be expressed or be implicitly included to feature.In the description of the invention, unless otherwise indicated,
" multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, small-power FAX transmitter modules, including the first wave filter, the first amplifier, the second wave filter, second
Amplifier, the 3rd amplifier and antenna, the first described wave filter and the first amplifier, the second wave filter, the second amplifier,
Three amplifiers are connected with antenna successively signal, and local vibration source is provided between the first amplifier and the second wave filter, as shown in Fig. 2
Described local vibration source is DDS direct synthesizers, and chip uses local oscillation signals of the AD9958 chips LO1 for output, and LO2 can be
Other modules of system provide the clock signal of high-precision low spurious.
First wave filter of this module is 45M07B narrow-band crystal filters；The second described wave filter uses passive quadravalence
Low pass filter；Described the first amplifier, the second amplifier are Hittite HMC580 single-chip integration microwave amplifiers；The
Three amplifiers are low-power amplifier, using AFT05MS003N chips.It is also connected with the DDS direct synthesizers of this module
There is single-chip microcomputer, described single-chip microcomputer is C8051 single-chip microcomputers.The signal that enters of this module is 45MHz intermediate-freuqncy signals.This module uses number
The isolated pcb board of mould.
In addition, as shown in figure 3, the digital control processing routine of the present invention relies on single-chip microcomputer, wherein U13 is microcontroller chip
C8051F001；J6 (JTAG_10PIN) interface is single-chip microcomputer debugging and download program interface；J2 (PORT) is DDS external tune
Try mouth；Single-chip microcomputer workflow predominantly initializes and data reception/transmission：Wherein initialization step is followed successively by initialization ginseng
Number setting, clock initialization, configuration register, serial communication setting, DDS set initial configuration；Data receiver and transmission walk
Suddenly include：(1) serial ports write-in control word is read；(2) frequency digital data write-in DDS SPI port is changed out by control word.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (7)
1. small-power FAX transmitter modules, it is characterised in that：Including the first wave filter, the first amplifier, the second wave filter, second
Amplifier, the 3rd amplifier and antenna, the first described wave filter and the first amplifier, the second wave filter, the second amplifier,
Three amplifiers are connected with antenna successively signal, and local vibration source, described local oscillator are provided between the first amplifier and the second wave filter
Source is DDS direct synthesizers, for producing local oscillation signal.
2. small-power FAX transmitter modules according to claim 1, it is characterised in that：The first described wave filter is
45M07B narrow-band crystal filters；The second described wave filter uses passive fourth order low-pass wave filter.
3. small-power FAX transmitter modules according to claim 1, it is characterised in that：Described the first amplifier, second are put
Big device is Hittite HMC580 single-chip integration microwave amplifiers；3rd amplifier is low-power amplifier, is used
AFT05MS003N chips.
4. small-power FAX transmitter modules according to claim 1, it is characterised in that：Described DDS direct synthesizers
Also it is connected with microcontroller serial port, described single-chip microcomputer is C8051 single-chip microcomputers.
5. the small-power FAX transmitter modules according to Claims 1 to 4 any one, it is characterised in that：The module board
Using the isolated pcb board of digital-to-analogue.
6. the small-power FAX transmitter modules according to Claims 1 to 4 any one, it is characterised in that：The input of the module
Signal is 45MHz intermediate-freuqncy signals.
7. the small-power FAX transmitter modules according to Claims 1 to 4 any one, it is characterised in that：The module is additionally provided with
Power supply, described power supply are used to power for transmitting chain and DDS direct synthesizers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881812.5A CN107733454A (en) | 2017-09-26 | 2017-09-26 | Small-power FAX transmitter modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881812.5A CN107733454A (en) | 2017-09-26 | 2017-09-26 | Small-power FAX transmitter modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107733454A true CN107733454A (en) | 2018-02-23 |
Family
ID=61208097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710881812.5A Pending CN107733454A (en) | 2017-09-26 | 2017-09-26 | Small-power FAX transmitter modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107733454A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7177601B1 (en) * | 2001-11-02 | 2007-02-13 | Raytheon Company | Method and apparatus for transceiving data using a bimodal power data link transceiver device |
| CN103428401A (en) * | 2013-07-24 | 2013-12-04 | 南京虹航电子科技有限公司 | Digital meteorologic fax machine |
| CN205377852U (en) * | 2015-12-30 | 2016-07-06 | 南京誉葆科技有限公司 | Frequently, subassembly is combined and received |
| CN205490574U (en) * | 2016-03-17 | 2016-08-17 | 石家庄开发区泰顺电子通讯有限公司 | Wireless broadcast receives monitoring facilities |
| US9501087B1 (en) * | 2015-06-17 | 2016-11-22 | Raytheon Company | Dynamically clocked DDS for spur optimization |
-
2017
- 2017-09-26 CN CN201710881812.5A patent/CN107733454A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7177601B1 (en) * | 2001-11-02 | 2007-02-13 | Raytheon Company | Method and apparatus for transceiving data using a bimodal power data link transceiver device |
| CN103428401A (en) * | 2013-07-24 | 2013-12-04 | 南京虹航电子科技有限公司 | Digital meteorologic fax machine |
| US9501087B1 (en) * | 2015-06-17 | 2016-11-22 | Raytheon Company | Dynamically clocked DDS for spur optimization |
| CN205377852U (en) * | 2015-12-30 | 2016-07-06 | 南京誉葆科技有限公司 | Frequently, subassembly is combined and received |
| CN205490574U (en) * | 2016-03-17 | 2016-08-17 | 石家庄开发区泰顺电子通讯有限公司 | Wireless broadcast receives monitoring facilities |
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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: 20180223 |