CN109120284A - digital frequency modulation transmitter - Google Patents
digital frequency modulation transmitter Download PDFInfo
- Publication number
- CN109120284A CN109120284A CN201710508768.3A CN201710508768A CN109120284A CN 109120284 A CN109120284 A CN 109120284A CN 201710508768 A CN201710508768 A CN 201710508768A CN 109120284 A CN109120284 A CN 109120284A
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- mentioned
- interface
- frequency modulation
- 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
Links
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
- H04B1/02—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)
- Small-Scale Networks (AREA)
Abstract
The present invention provides a kind of Digital Frequency Modulation Transmitters, including power amplifier module, and the signal received is amplified to transmission power and exports transmitting signal, comprising: multiple interface modules receive data-signal；Signal processing module carries out signal processing to data-signal and exports modulated signal；Multiple frequency synthesizer modules carry out conversion process to modulated signal, and export analog signal to power amplifier module；And main control module, it is interface module, signal processing module and frequency synthesizer module power supply, and send configuration-direct to signal processing module, wherein interface module and the quantity of frequency synthesizer module are configured according to transmitting.The technical solution that there is provided through the invention, it can be achieved that transmitting business diversification, and reach save the cost by separate modularization design, effectively reduce the purpose of transmitter volume.
Description
The application is the divisional application of original bill, the application number 201710493006.0 of original bill, June 26 2017 applying date
Day, invention and created name " Digital Frequency Modulation Transmitter ".
Technical field
The present invention relates to the frequency modulation broadcasting communications fields, particularly, are related to a kind of Digital Frequency Modulation Transmitter.
Background technique
Frequency modulation broadcasting is widely used in China's broadcast world.With radio programmes channel and signal kind
Class increases, and traditional frequency modulation transmitter using single audio frequency signal, single launching frequency and analog signal processing technology is
New demand is not adapted to increasingly.
Existing frequency modulation transmitter need to the demand of corresponding multi signal, multi-emitting frequency point due to its integrated design
Internal a whole set of transmitting module is extended, cost is too high, and the transmitter volume after extension is excessive.
Summary of the invention
To solve the above problems, the present invention provides a kind of adaptation multi signal type, multi-emitting frequency point, and can be with flexible configuration
Module, the Digital Frequency Modulation Transmitter for reducing cost, realizing miniaturization.
The embodiment of the invention provides a kind of Digital Frequency Modulation Transmitter, including power amplifier module, the signal that will be received
It is amplified to transmission power and exports transmitting signal characterized by comprising multiple interface modules receive data-signal；At signal
Module is managed, signal processing is carried out to above-mentioned data-signal and exports modulated signal；Multiple frequency synthesizer modules, to above-mentioned modulation
Signal carries out conversion process, and exports analog signal to above-mentioned power amplifier module；And main control module, it is above-mentioned interface mould
Block, above-mentioned signal processing module and the power supply of said frequencies Senthesizer module, and configuration-direct is sent to above-mentioned signal processing module,
Wherein, above-mentioned interface module and the quantity of said frequencies Senthesizer module are configured according to transmitting.
Optionally, the quantity of above-mentioned interface module is configured according to the quantity of the data-signal type of required transmitting.
Optionally, the quantity of said frequencies Senthesizer module is configured according to the quantity of launching frequency.
Optionally, above-mentioned interface module includes analog audio interface, digital audio interface, wireless Data Broadcasting System
(Radio Data System, RDS) data-interface and Ethernet data interface, above-mentioned analog audio interface include L channel mould
Quasi- audio interface and right analog audio interface.
Optionally, above-mentioned signal processing module carries out signal processing to above-mentioned data-signal according to above-mentioned configuration-direct, and
Above-mentioned signal processing includes FM modulation, QPSK modulation, stereo coding, preemphasis processing and number filtering processing.
Optionally, above-mentioned signal processing module includes field programmable gate array chip.
Optionally, said frequencies Senthesizer module includes Direct Digital Frequency Synthesizers chip and filter unit.
Optionally, above-mentioned conversion process includes digital-to-analogue conversion and filtering processing.
Optionally, above-mentioned configuration-direct include above-mentioned data-signal type, launching frequency and above-mentioned interface module and on
State the configuration quantity of frequency synthesizer module.
Compared with prior art, technical solution of the present invention has the advantages that
1. number can also be provided other than it can provide analog audio signal access in Digital Frequency Modulation Transmitter provided by the invention
The access of word audio signal, the access of RDS data-signal and the access of Ethernet data signal, the presence or absence of various data-signals can pass through
Main control module is separately configured；
2. due to the main control module of Digital Frequency Modulation Transmitter, interface module, signal processing circuit, frequency synthesis in the present invention
Device module and power amplifier module are designed using separate modularization, therefore are worked as and needed to increase signal kinds or mode, and are needed more
When frequency point emits, main control module and signal processing module are not required to increase, it is only necessary to increase accordingly interface module and frequency synthesizer
Module, then configured by main control module, so that it may realize that multi-signal mode and multifrequency point emit, save the cost, and can
To effectively reduce the volume of transmitter.
Detailed description of the invention
Fig. 1 is the schematic diagram of the specific embodiment of Digital Frequency Modulation Transmitter of the present invention；
Fig. 2 is the schematic diagram of the another specific embodiment of Digital Frequency Modulation Transmitter of the present invention；And
Fig. 3 is the schematic diagram of the still another embodiment of Digital Frequency Modulation Transmitter of the present invention.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
The embodiment of the invention provides a kind of Digital Frequency Modulation Transmitters.Referring to FIG. 1, Fig. 1 is frequency-shift keying hair of the present invention
Penetrate the schematic diagram of the specific embodiment of machine.As shown, Digital Frequency Modulation Transmitter 1 includes main control module 11, interface module 12, letter
Number processing module 13, frequency synthesizer module 14 and power amplifier module 15.
Main control module 11 includes power supply, display unit, input unit and processing unit (not shown).Power supply is used for interface
Module 12, signal processing module 13 and frequency synthesizer module 14 are powered.Display unit shows transmitter system status information, packet
Include the data-signal type of launching frequency, preemphasis option and access.Input unit is for inputting configuration information.In the present embodiment
In, input unit is control button, including key, acknowledgement key and ESC Escape up and down, and invention is not limited thereto.Processing unit
The configuration information from input unit is handled, display unit is sent it to, and sends configure to signal processing module 13 accordingly
Instruction, wherein configuration-direct includes type, launching frequency and the interface module 12 and frequency synthesizer of the data-signal of access
The configuration quantity of module 14.
Interface module 12 receives a plurality of types of data-signals.In the present embodiment, interface module 12 includes analogue audio frequency
Interface, digital audio interface, RDS data-interface and Ethernet data interface, and analog audio interface includes left channel analog sound
Frequency interface and right analog audio interface, invention is not limited thereto.Interface module 12 is arranged by above-mentioned interface, at least may be used
Receive analog audio signal, digital audio and video signals, RDS data-signal and Ethernet data signal.
Signal processing module 13 receives the data-signal from interface module 12 and the configuration-direct from main control module 11,
Corresponding signal processing is carried out to data-signal according to configuration-direct and exports modulated signal.Wherein, above-mentioned signal processing includes
Frequency modulation (Frequency Modulation, FM) modulation, quadrature phase shift keying (Quadrature Phase Shift Keyin,
QPSK) modulation, stereo coding, preemphasis processing and number filtering processing.
The modulated signal received is carried out conversion process and exports analog signal by frequency synthesizer module 14.Frequency synthesis
Device module 14 includes Direct Digital Frequency Synthesizers (Direct Digital Synthesizer, DDS) chip and filter unit,
Wherein, DDS chip carries out digital-to-analogue conversion to modulated signal, and filter unit is filtered modulated signal.
The analog signal received is amplified to transmission power and exports transmitting signal, and then led to again by power amplifier module 15
Antenna is crossed to launch signal.
In the present invention, the quantity of interface module 12 and frequency synthesizer module 14 is can to need to be extended according to transmitting
's.In the present embodiment, Digital Frequency Modulation Transmitter 1 includes an interface module 12 and a frequency synthesizer module 14.Interface
Module 12 can access any one in analog audio signal, digital audio and video signals, RDS data-signal and Ethernet data signal
Data-signal, and the data-signal is launched by frequency synthesizer module 14 using single launching frequency.With traditional tune
Channel transmitter is compared, and single launching frequency can be used to emit at least four different types for the Digital Frequency Modulation Transmitter 1 in the present embodiment
Data-signal, realize the diversification of transmitting business.
Fig. 2 is the schematic diagram of the another specific embodiment of Digital Frequency Modulation Transmitter of the present invention.As shown, in the present embodiment
The module and each module that include of Digital Frequency Modulation Transmitter 2 function as in previous embodiment, repeated no more in this.
The present embodiment is different in embodiment shown in Fig. 1: Digital Frequency Modulation Transmitter 2 includes 4 frequency synthesis
Device module 24a, 24b, 24c, 24d, as shown in Figure 2.Digital Frequency Modulation Transmitter 2 can access at least four not by interface module 22
The data-signal of same type, comprising: analog audio signal, digital audio and video signals, RDS data-signal and Ethernet data signal,
After those data-signals are handled by signal processing module 23, four differences are used by frequency synthesizer module 24a~24d respectively
Launching frequency the data-signal of four seed types is launched simultaneously, such as: analog audio signal is passed through into frequency synthesizer
Module 24a is emitted, and digital audio and video signals are emitted by frequency synthesizer module 24b, RDS data-signal is passed through
Frequency synthesizer module 24c is emitted, and Ethernet data signal is emitted by frequency synthesizer module 24d.
On the other hand, Digital Frequency Modulation Transmitter 2 can access analog audio signal by interface module 22, digital audio is believed
Number, any one signal in RDS data-signal and Ethernet data signal, and will by frequency synthesizer module 24a~24d
The data-signal is launched using four different launching frequencies.
Wherein, the access of multichannel data signal and the transmitting of multi-emitting frequency point are to be sent to signal processing by main control module 21
The configuration-direct of module 23 is controlled.
The beneficial effect of the present embodiment includes: that Digital Frequency Modulation Transmitter 2 can use the data-signal of multiple and different types
Multi-emitting frequency point is launched simultaneously, realizes the diversification of transmitting business, can also make the individual data signal of a certain type
Emitted with multiple launching frequencies, realizes the quick and wide-scale distribution of important broadcasted content.
Fig. 3 is the schematic diagram of the still another embodiment of Digital Frequency Modulation Transmitter of the present invention.As shown in figure 3, the present embodiment
In the module and each module that include of Digital Frequency Modulation Transmitter 3 function as in previous embodiment, it is no longer superfluous in this
It states.
The present embodiment is different in embodiment shown in Fig. 2: Digital Frequency Modulation Transmitter 3 includes two interface modules
32a,32b.Since each interface module includes at least analog audio interface, digital audio interface, RDS data-interface and ether
Four kinds of data signal interfaces of network data interface, therefore Digital Frequency Modulation Transmitter 3 can be according to mission need, to the kind of incoming data signal
Class is freely combined.For example, interface module 32a access analog audio signal, digital audio and video signals and Ethernet data signal,
Interface module 32b accesses another analog audio signal.
After those data-signals are handled by signal processing module 33, used respectively by frequency synthesizer module 34a~34d
Four different launching frequencies launch the data-signal of four seed types simultaneously, such as: analog audio signal is passed through into frequency
Rate Senthesizer module 34a is emitted, and digital audio and video signals is emitted by frequency synthesizer module 34b, by Ethernet
Data-signal is emitted by frequency synthesizer module 34c, and another analog audio signal is passed through frequency synthesizer module 34d
Emitted.Wherein, the access of diversiform data signal and the transmitting of multi-emitting frequency point are to be sent to signal by main control module 31
The configuration-direct of processing module 33 is controlled.
In conclusion Digital Frequency Modulation Transmitter provided by the invention is gone back other than it can provide analog audio signal access
It can provide digital audio and video signals access, the access of RDS data-signal and the access of Ethernet data signal, the presence or absence of various data-signals
It can be separately configured by main control module, realize the diversification of transmitting business.In addition, due to frequency-shift keying transmitting in the present invention
Main control module, interface module, signal processing circuit, frequency synthesizer module and the power amplifier module of machine use separate modular
Design, therefore when needing to increase signal kinds or mode, and multifrequency point being needed to emit, main control module and signal processing module are not
It needs to increase, it is only necessary to increase accordingly interface module and frequency synthesizer module, then be configured by main control module, so that it may real
Existing multi-signal mode and multifrequency point transmitting, save the cost, and the volume of transmitter can be effectively reduced.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (9)
1. the signal received is amplified to transmission power and exported by a kind of Digital Frequency Modulation Transmitter, including power amplifier module
Emit signal characterized by comprising
Multiple interface modules receive data-signal；
Signal processing module carries out signal processing to above-mentioned data-signal and exports modulated signal；
Multiple frequency synthesizer modules carry out conversion process to above-mentioned modulated signal, and export analog signal to above-mentioned power and put
Big module；And
Main control module is above-mentioned interface module, above-mentioned signal processing module and the power supply of said frequencies Senthesizer module, and to above-mentioned
Signal processing module sends configuration-direct,
Wherein, above-mentioned interface module and the quantity of said frequencies Senthesizer module are configured according to transmitting.
2. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, the quantity of above-mentioned interface module according to
The quantity of the data-signal type of required transmitting is configured.
3. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, the number of said frequencies Senthesizer module
Amount is configured according to the quantity of launching frequency.
4. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, above-mentioned interface module includes analog audio
Frequency interface, digital audio interface, wireless Data Broadcasting System data-interface and Ethernet data interface, above-mentioned analog audio interface
Including Left channel analog audio interface and right analog audio interface.
5. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, above-mentioned signal processing module is according to upper
It states configuration-direct and signal processing is carried out to above-mentioned data-signal, and above-mentioned signal processing includes that FM is modulated, QPSK is modulated, is stereo
Coding, preemphasis processing and number filtering processing.
6. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, above-mentioned signal processing module includes existing
Field programmable gate array chip.
7. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, said frequencies Senthesizer module includes
Direct Digital Frequency Synthesizers chip and filter unit.
8. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, above-mentioned conversion process includes that digital-to-analogue turns
It changes and is filtered.
9. Digital Frequency Modulation Transmitter as described in claim 1, which is characterized in that wherein, above-mentioned configuration-direct includes above-mentioned number
It is believed that number type, launching frequency and above-mentioned interface module and said frequencies Senthesizer module configuration quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508768.3A CN109120284A (en) | 2017-06-26 | 2017-06-26 | digital frequency modulation transmitter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508768.3A CN109120284A (en) | 2017-06-26 | 2017-06-26 | digital frequency modulation transmitter |
| CN201710493006.0A CN109120283A (en) | 2017-06-26 | 2017-06-26 | digital frequency modulation transmitter |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710493006.0A Division CN109120283A (en) | 2017-06-26 | 2017-06-26 | digital frequency modulation transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109120284A true CN109120284A (en) | 2019-01-01 |
Family
ID=64733997
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508768.3A Pending CN109120284A (en) | 2017-06-26 | 2017-06-26 | digital frequency modulation transmitter |
| CN201710493006.0A Pending CN109120283A (en) | 2017-06-26 | 2017-06-26 | digital frequency modulation transmitter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710493006.0A Pending CN109120283A (en) | 2017-06-26 | 2017-06-26 | digital frequency modulation transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109120284A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201499172U (en) * | 2009-04-15 | 2010-06-02 | 北京北广科技股份有限公司 | Frequency modulation digital exciter based on FPGA |
| CN103580703A (en) * | 2012-07-30 | 2014-02-12 | 华为技术有限公司 | Transmission circuit, transceiver, communication system and data transmitting method |
-
2017
- 2017-06-26 CN CN201710508768.3A patent/CN109120284A/en active Pending
- 2017-06-26 CN CN201710493006.0A patent/CN109120283A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201499172U (en) * | 2009-04-15 | 2010-06-02 | 北京北广科技股份有限公司 | Frequency modulation digital exciter based on FPGA |
| CN103580703A (en) * | 2012-07-30 | 2014-02-12 | 华为技术有限公司 | Transmission circuit, transceiver, communication system and data transmitting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109120283A (en) | 2019-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102217191B (en) | Linear and polar dual mode transmitter circuit | |
| WO2019083774A4 (en) | Wifi channel aggregation | |
| US6931074B1 (en) | Transmitter having programmable transmission parameters temporally aligned with payload and method therefor | |
| CN104981790A (en) | Multi-slot multi-point audio interface | |
| AU2003289830A1 (en) | Method of process configuration for multiple harq processes | |
| CN102474276A (en) | Using LO shifting to prevent a local transceiver from interfering with an fm radio | |
| CN103248434A (en) | Communication method for electronic device | |
| CN102386946A (en) | Data transmission rapid frequency hopping radio station | |
| CN104769855B (en) | Suitable for merging the signal transmitting apparatus of distributing antenna system | |
| CN202998086U (en) | A multi-band double-reception band-crossing duplex relay vehicle station | |
| GB2444879A (en) | System and up,down link transmission method of frequency distribution user inserted in local network | |
| CN105451132A (en) | UHF frequency band single chip digit modulation wireless microphone system | |
| CN103187628A (en) | Antenna device for receiving radio broadcasting signal | |
| CN106817135B (en) | The beechnut realized based on software and radio technique | |
| CN205263628U (en) | Intelligence principal and subordinate's lamp device and system | |
| US20240114325A1 (en) | Low Overhead Control Channel for Wireless Audio Systems | |
| CN104052505B (en) | Single-chip transmitting set, transmitting chip and signal transmitting method | |
| CN104349247B (en) | A kind of wireless microphone system based on RDS data communications | |
| CN109120284A (en) | digital frequency modulation transmitter | |
| CN204597937U (en) | A kind of digital-to-analogue that realizes is with the FM exciter broadcast | |
| CN101527810A (en) | MQAM multifunctional transmission system | |
| CN103686295A (en) | Method and system allowing set top box and mobile terminal to share Bluetooth function | |
| CN203261347U (en) | Multichannel wireless audio transmission system | |
| CN202004784U (en) | Modulator of digital/analog audio broadcasting transmitting system | |
| CN105915260B (en) | A kind of rf frequency transform method carrying RDS signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190101 |