CN114978203A - Multi-frequency modulation transmitter - Google Patents
Multi-frequency modulation transmitter Download PDFInfo
- Publication number
- CN114978203A CN114978203A CN202210443046.5A CN202210443046A CN114978203A CN 114978203 A CN114978203 A CN 114978203A CN 202210443046 A CN202210443046 A CN 202210443046A CN 114978203 A CN114978203 A CN 114978203A
- Authority
- CN
- China
- Prior art keywords
- exciter
- frequency
- transmitter
- electrically connected
- input end
- 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
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000009365 direct transmission Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Images
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
- H04B1/005—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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The invention discloses a multi-frequency modulation transmitter, and relates to the field of frequency modulation transmitters. The input end of the power amplifier module is electrically connected with a frequency synthesizer, the input end of the frequency synthesizer is respectively and electrically connected with a first exciter, a second exciter and a third exciter, the input end of the first exciter is electrically connected with a first signal source, the input end of the second exciter is electrically connected with a second signal source, the input end of the third exciter is electrically connected with a third signal source, the frequency synthesizer synthesizes a comprehensive frequency signal source required by the transmitter, the power amplifier module comprises an antenna, and the power amplifier module amplifies the signal and then directly transmits and broadcasts the signal through the antenna. The invention provides a multi-frequency modulation transmitter, which is formed by a frequency synthesizer and a power amplifier module, and a plurality of sets of program signals are tuned into radio frequency signals through a first exciter, a second exciter and a third exciter which are matched with each other.
Description
Technical Field
The invention relates to the field of frequency modulation transmitters, in particular to a multi-frequency modulation transmitter.
Background
The FM broadcasting is a process of converting an analog audio signal into a radio magnetic wave signal and demodulating and listening by a user radio, generally, the FM broadcasting is performed by broadcasting one frequency program corresponding to one transmitter, when two or more programs need to be simultaneously broadcast by a station, a plurality of transmitters need to be equipped for simultaneous operation, and the output final stage also needs to perform power synthesis through a multiplexer, so that the construction, operation and maintenance costs of the station are increased, the safe broadcasting coefficient is relatively low, the energy consumption ratio is relatively high, if one transmitter can simultaneously broadcast two or more programs, a broadband power signal synthesized by a plurality of frequencies is directly output and is directly transmitted through an antenna, thereby not only saving the purchase quantity of the transmitters, but also reducing the power loss in the synthesis process of the multiplexer, realizing that one transmitter can complete the simultaneous broadcasting of two or more program frequencies, the whole simplification of station equipment is realized, so that the purposes of energy conservation and emission reduction are achieved, and the scheme is also suitable for other medium-short wave transmitters and similar wireless signal transmitting equipment.
Therefore, there is a need to provide a multi-frequency fm transmitter that solves the above-mentioned problems.
Disclosure of Invention
The invention provides a multi-frequency modulation transmitter, which solves the technical problem that the existing frequency modulation transmitter does not have a multi-frequency transmission function.
In order to solve the above technical problem, the invention provides a multi-frequency fm transmitter, which comprises a power amplifier module, and is characterized in that: the input end of the power amplification module is electrically connected with a frequency synthesizer, the input end of the frequency synthesizer is electrically connected with a first exciter, a second exciter and a third exciter respectively, the input end of the first exciter is electrically connected with a first signal source, the input end of the second exciter is electrically connected with a second signal source, and the input end of the third exciter is electrically connected with a third signal source.
Preferably, the frequency synthesizer synthesizes a synthesized frequency signal source required by the transmitter.
Preferably, the power amplifier module comprises an antenna, and the power amplifier module amplifies the signal and then directly transmits and broadcasts the signal through the antenna.
Preferably, under the condition that the voltage and the current of the power amplifier module are kept unchanged, one frequency or a plurality of frequencies are increased on the basis of single-frequency broadcasting, and the output gain of the original frequency is not influenced completely.
Preferably, the frequency synthesizer is a comprehensive frequency, and fully utilizes all energy (including harmonic clutter energy) in a bandwidth to generate two or more frequency waveforms, and the two or more frequency waveforms are amplified by a broadband amplifier and then directly transmitted to an antenna.
Compared with the related art, the multi-frequency modulation transmitter provided by the invention has the following beneficial effects:
the invention provides a multi-frequency modulation transmitter, which is formed by a frequency synthesizer and a power amplifier module, and a plurality of sets of program signals are tuned into radio frequency signals through a first exciter, a second exciter and a third exciter which are matched with each other.
The invention provides a multi-frequency modulation transmitter, which is characterized in that a frequency synthesizer is used for synthesizing a comprehensive frequency signal source required by the transmitter, and the signal is amplified by a power amplification module and then directly transmitted and broadcast by an antenna.
Drawings
Fig. 1 is a schematic diagram of a preferred embodiment of a multi-frequency fm transmitter according to the present invention;
FIG. 2 is a graph of a single frequency FM99.0MHZ broadcast spectrum of the present invention;
fig. 3 is a diagram of FM99.0MHZ and FM104.9MHZ dual-frequency synthesized broadcast spectrums of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
The first embodiment is as follows:
referring to fig. 1-3, the present invention provides a technical solution: the input end of the power amplifier module is electrically connected with a frequency synthesizer, the input end of the frequency synthesizer is respectively electrically connected with a first exciter, a second exciter and a third exciter, the input end of the first exciter is electrically connected with a first signal source, the input end of the second exciter is electrically connected with a second signal source, and the input end of the third exciter is electrically connected with a third signal source.
In this embodiment, a plurality of sets of program signals are tuned into radio frequency signals by a transmitter composed of a frequency synthesizer and a power amplifier module through a first exciter, a second exciter and a third exciter which are matched with each other.
Example two:
referring to fig. 1-3, on the basis of the first embodiment, the present invention provides a technical solution: the frequency synthesizer synthesizes a comprehensive frequency signal source required by the transmitter, the power amplifier module comprises an antenna, the power amplifier module amplifies signals and then directly transmits and broadcasts the signals through the antenna, one frequency or a plurality of frequencies are added on the basis of single-frequency broadcasting under the condition that the voltage and the current of the power amplifier module are not changed, the output gain of the original frequency is not influenced completely, the frequency synthesizer is comprehensive frequency, all energy (including harmonic clutter energy) in the bandwidth is fully utilized to generate two or a plurality of frequency waveforms, and the two or a plurality of frequency waveforms are directly transmitted out for the antenna after being amplified through the broadband amplifier.
In this embodiment: the frequency synthesizer synthesizes a comprehensive frequency signal source required by the transmitter, and the signal is amplified by the power amplifier module and then directly transmitted and broadcast by the antenna.
The working principle of the multi-frequency modulation transmitter provided by the invention is as follows:
the first innovation point implementation step:
the first step is as follows: through a transmitter composed of a frequency synthesizer and a power amplifier module, a plurality of sets of program signals are tuned into radio frequency signals through a first exciter, a second exciter and a third exciter which are matched with each other.
The implementation step of the second innovation point:
the first step is as follows: the frequency synthesizer synthesizes a comprehensive frequency signal source required by the transmitter, and the signal is amplified by the power amplifier module and then directly transmitted and broadcast by the antenna.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a frequency modulation transmitter of multifrequency, includes power amplifier module, its characterized in that: the input end of the power amplification module is electrically connected with a frequency synthesizer, the input end of the frequency synthesizer is respectively electrically connected with a first exciter, a second exciter and a third exciter, the input end of the first exciter is electrically connected with a first signal source, the input end of the second exciter is electrically connected with a second signal source, and the input end of the third exciter is electrically connected with a third signal source.
2. The transmitter of claim 1, wherein the frequency synthesizer synthesizes the synthesized frequency signal source required by the transmitter.
3. The multiple frequency FM transmitter of claim 1, wherein said power amplifier module comprises an antenna, and said power amplifier module amplifies the signal and then transmits the amplified signal directly through the antenna for broadcasting.
4. The transmitter of claim 1, wherein the power amplifier module increases one or more frequencies based on a single frequency without affecting the output gain of the original frequency.
5. The transmitter of claim 1, wherein the frequency synthesizer is a complex frequency synthesizer that generates two or more frequency waveforms using substantially all energy in the bandwidth (including harmonic clutter energy) and amplifies the waveforms with a wide-band amplifier for direct transmission to the antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443046.5A CN114978203A (en) | 2022-04-25 | 2022-04-25 | Multi-frequency modulation transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443046.5A CN114978203A (en) | 2022-04-25 | 2022-04-25 | Multi-frequency modulation transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114978203A true CN114978203A (en) | 2022-08-30 |
Family
ID=82980420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210443046.5A Pending CN114978203A (en) | 2022-04-25 | 2022-04-25 | Multi-frequency modulation transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114978203A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115041A (en) * | 2007-08-21 | 2008-01-30 | 安徽省广播电视科研所 | Multi-frequency FM transmitter |
| CN201369737Y (en) * | 2009-03-13 | 2009-12-23 | 谭大勋 | Wired frequency-modulation broadcasting transmit-receive system |
| CN210640874U (en) * | 2019-12-09 | 2020-05-29 | 咸阳广通电子科技有限公司 | Broadcast transmitter |
-
2022
- 2022-04-25 CN CN202210443046.5A patent/CN114978203A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115041A (en) * | 2007-08-21 | 2008-01-30 | 安徽省广播电视科研所 | Multi-frequency FM transmitter |
| CN201369737Y (en) * | 2009-03-13 | 2009-12-23 | 谭大勋 | Wired frequency-modulation broadcasting transmit-receive system |
| CN210640874U (en) * | 2019-12-09 | 2020-05-29 | 咸阳广通电子科技有限公司 | Broadcast transmitter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0643494B1 (en) | Radio receiver | |
| KR20080034421A (en) | High efficiency rf transmitter system using non-linear amplifiers | |
| CN101202553A (en) | Multi-band receiver | |
| US7095793B2 (en) | Digital exciter/phasor/transmitter for directional antennal system | |
| CN110011623A (en) | A kind of incorgruous power amplifier of dual band radio frequency | |
| CN110212874B (en) | Millimeter wave linear power amplifier chip | |
| CN114978203A (en) | Multi-frequency modulation transmitter | |
| CN105429654A (en) | Frequency synthesizer for S-band wave observation radar | |
| CN105261914A (en) | Ultra-narrowband low-noise optoelectronic oscillator | |
| CN205141352U (en) | Low noise reputation electric oscillator based on supplementary variable frequency technology | |
| CN208954625U (en) | K sings system, wireless microphone and its signal transmitting apparatus | |
| CN219659708U (en) | High-linearity broadband superheterodyne microwave system | |
| CN101286962A (en) | Carrier balancing radio frequency predistortion power amplifier realizing apparatus and method | |
| CN104469215A (en) | C-waveband tuner sharing two-level amplifier | |
| CN218868218U (en) | Ka wave band transmitter | |
| CN221428915U (en) | Dual-channel satellite frequency demultiplier and circuit thereof, and satellite receiving equipment | |
| RU18813U1 (en) | SATELLITE RECEIVING AND TRANSMISSION DEVICE | |
| CN204334551U (en) | A kind of short-wave receiver based on dsp processor | |
| CN215734293U (en) | Intermodulation correction device for multi-channel FM broadcast | |
| CN206472136U (en) | A kind of broadcast system power amplifier | |
| CN220234976U (en) | 5G signal coverage system and 5G signal coverage device applied to tunnel | |
| Daho et al. | An operational modified-LINC demonstrator for wireless communication | |
| CN101237265B (en) | TD-SCDMA multi-carrier power amplifier for wireless sensor network | |
| US2031130A (en) | Short wave-long wave receiver | |
| CN212063949U (en) | Millimeter wave high-power broadband frequency multiplier |
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 |