CN206559333U - A kind of Digital Frequency Modulation Transmitter - Google Patents
A kind of Digital Frequency Modulation Transmitter Download PDFInfo
- Publication number
- CN206559333U CN206559333U CN201720258059.XU CN201720258059U CN206559333U CN 206559333 U CN206559333 U CN 206559333U CN 201720258059 U CN201720258059 U CN 201720258059U CN 206559333 U CN206559333 U CN 206559333U
- Authority
- CN
- China
- Prior art keywords
- module
- frequency modulation
- main control
- control module
- modulation transmitter
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of Digital Frequency Modulation Transmitter, its composition includes main control module, peripheral module, frequency modulation(PFM) module, power amplifier module, wherein, the main control module is connected by frequency modulation(PFM) module with power amplifier module, and the peripheral module is connected with main control module.Peripheral module includes button, display and the serial port level changer being connected with extraneous PC.The utility model can realize manually and automatically frequency modulation, the function of the currently used channel of display, while support+7.4V lithium batteries and+9V/+12V power supply adaptors are powered.The utility model solves current frequency modulation transmitter function simple question, while the characteristics of also having broadband, low-power consumption, scalable system, performance stabilization.
Description
Technical field
The utility model is related to a kind of frequency modulation transmitter, more particularly to a kind of Digital Frequency Modulation Transmitter.
Background technology
Digital Frequency Modulation Transmitter is the digitized frequency-modulated broadcast transmitter from audio to radio frequency overall process, and it has used soft
Part radiotechnics realizes frequency-modulated broadcast transmitter.This emitter is due to the digitized processing using overall process and on a large scale
Integrated circuit is as main element, and the tonequality of frequency modulation broadcasting can reach the level close to CD, greatly improve the reliable of emitter
Property, thus it is better than analog fm emitter.
Digital communication in recent years is developed rapidly and promoted, and is asked for analog fm emitter is not good enough on launching effect
Topic, digital frequency modulation transmitter is used widely.With the development of science and technology, requirement of the people to hardware equipment function is constantly carried
Rise, the function of buying emitter is limited, it is impossible to meet people in future to more multi-functional demand.
Utility model content
The purpose of this utility model is to solve current frequency modulation transmitter function simple question, at the same also have broadband,
The characteristics of low-power consumption, scalable cheap, system, performance stabilization.
The technical solution of the utility model is：
A kind of Digital Frequency Modulation Transmitter, including main control module, peripheral module, frequency modulation(PFM) module and power amplifier module；
Wherein, the main control module is connected by frequency modulation(PFM) module with power amplifier module, and the peripheral module connects with main control module
Connect.
Wherein, the main control module uses single-chip microcomputer MSP430G2553.
Wherein, the peripheral module includes button, display and the serial port level changer being connected with extraneous PC,
The button, display, serial port level changer are connected with main control module respectively.
Wherein, the frequency modulation(PFM) module uses monolithic radio frequency transceiving chip TRF6901, and frequency band adjustable is 860-
930MHz。
Wherein, the power amplifier module uses fixed gain radio frequency amplification chip TRF37A73.
Wherein, in addition to power supply, the input voltage of power supply is in 6.5-12V, while support+7.4V lithium batteries and+9V/
+ 12V power supply adaptors are powered as external power supply.
Beneficial effect：
A kind of Digital Frequency Modulation Transmitter described in the utility model, including main control module, peripheral module, frequency modulation(PFM) module
And power amplifier module；Wherein, the main control module is connected by frequency modulation(PFM) module with power amplifier module, the peripheral hardware mould
Block is connected with main control module.Current frequency modulation transmitter function simple question is can solve the problem that, while also having broadband, low work(
The characteristics of consumption, cheap, system are scalable, performance is stable.
Brief description of the drawings
Fig. 1 is a kind of system block diagram for Digital Frequency Modulation Transmitter that the utility model is provided.
Fig. 2 is a kind of function structure chart of the power supply for Digital Frequency Modulation Transmitter that the utility model is provided.
Embodiment
Describe the technical solution of the utility model in detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of Digital Frequency Modulation Transmitter described in the utility model, including main control module, peripheral module, frequency
Rate modulation module and power amplifier module；Wherein, the main control module is connected by frequency modulation(PFM) module with power amplifier module,
The peripheral module is connected with main control module.
Wherein, the peripheral module includes button, display and the serial port level changer being connected with extraneous PC,
The button, display, serial port level changer are connected with main control module respectively.
Frequency modulation(PFM) module selects TI companies monolithic radio frequency transceiving chip TRF6901, and it has, and price is low, be applicable voltage
Scope is wide, using simple, peripheral components it is few the advantages of, frequency band adjustable is 860-930MHz.
Wherein, the main control module selects single-chip microcomputer MSP430G2553, have performance strong, low in energy consumption, can online upgrading
Advantage.Single-chip microcomputer MSP430G2553 reads keyboard, the instruction of serial port level changer, realizes to frequency modulation(PFM) module and display
The control of device.
The input instruction of button in peripheral module is to single-chip microcomputer MSP430G2553, by I2C to frequency modulation(PFM) module
Monolithic radio frequency transceiving chip TRF6901 control register is written and read operation, to realize the hand to the frequency-shift keying transmitter
The selection of dynamic or automatic frequency adjustment.Display is driven by main control module single-chip microcomputer MSP430G2553, display current channel letter
Breath.The signal of PC is carried out level conversion by serial port level changer, is connected to the serial ports of main control module, download program is arrived
In main control module, so as to realize to system software upgrading.
Power amplifier module selects TRF37A73 chips, is a kind of fixed gain radio frequency amplifier, stable with low in energy consumption
Property high advantage, the modulated signal amplification that can produce frequency modulation(PFM) module again is coupled on antenna.
As shown in figure 1, the frequency modulation(PFM) module, including voltage controlled oscillator and frequency modulator, wherein, it is described voltage-controlled to shake
Swing device to be connected with main control module by I2C, the frequency modulator is connected with power amplifier module, extraneous modulated signal is input to
Frequency modulator.
The power amplifier module, is made up of RF power amplification, passes through antenna receiving and transmitting signal.
As shown in Fig. 2 the Digital Frequency Modulation Transmitter, in addition to power supply, the input voltage of power supply in 6.5-12V,
Support+7.4V lithium batteries and+9V/+12V power supply adaptors are powered as external power supply simultaneously.It should be noted that the power supply is electric
Source includes resettable fuse, overvoltage crowbar, voltage stabilizing chip AMS1117CD.
Described above is only, to preferred embodiment of the present utility model, not scope of the present utility model to be defined,
Therefore on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff is to described in the utility model
Equivalence changes or decoration that construction, feature and principle are made, all should fall into protection domain of the present utility model.
Claims (6)
1. a kind of Digital Frequency Modulation Transmitter, it is characterised in that including main control module, peripheral module, frequency modulation(PFM) module and power
Amplification module；Wherein, the main control module is connected by frequency modulation(PFM) module with power amplifier module, the peripheral module and master
Control module connection.
2. a kind of Digital Frequency Modulation Transmitter according to claim 1, it is characterised in that the main control module uses single-chip microcomputer
MSP430G2553。
3. a kind of Digital Frequency Modulation Transmitter according to claim 1, it is characterised in that the peripheral module include button,
Display and the serial port level changer being connected with extraneous PC, the button, display, serial port level changer difference
It is connected with main control module.
4. a kind of Digital Frequency Modulation Transmitter according to claim 1, it is characterised in that the frequency modulation(PFM) module is using single
Piece rf chip TRF6901, frequency band adjustable is 860-930MHz.
5. a kind of Digital Frequency Modulation Transmitter according to claim 1, it is characterised in that the power amplifier module is using solid
Determine gain RF amplification chip TRF37A73.
6. a kind of Digital Frequency Modulation Transmitter according to claim 1, it is characterised in that also including power supply, power supply
Input voltage is in 6.5-12V, while support+7.4V lithium batteries and+9V/+12V power supply adaptors are powered as external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720258059.XU CN206559333U (en) | 2017-03-16 | 2017-03-16 | A kind of Digital Frequency Modulation Transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720258059.XU CN206559333U (en) | 2017-03-16 | 2017-03-16 | A kind of Digital Frequency Modulation Transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206559333U true CN206559333U (en) | 2017-10-13 |
Family
ID=60364812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720258059.XU Expired - Fee Related CN206559333U (en) | 2017-03-16 | 2017-03-16 | A kind of Digital Frequency Modulation Transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206559333U (en) |
-
2017
- 2017-03-16 CN CN201720258059.XU patent/CN206559333U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20180316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |