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Voltage-adjustable frequency modulation transmitter

A frequency modulation transmitter, adjustable technology, applied in the direction of electrical components, transmission systems, etc., can solve the problem of increasing space requirements

Active Publication Date: 2016-03-16
杭州众传数字设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low energy conversion efficiency of the whole machine means that the system needs to increase the power supply capacity and equipment cooling capacity, which obviously increases the space requirement

Method used

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  • Voltage-adjustable frequency modulation transmitter
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  • Voltage-adjustable frequency modulation transmitter

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] Referring to the accompanying drawings, take the FM 300W transmitter as an example.

[0019] The voltage-adjustable FM transmitter includes a FM excitation source, a power amplification module, a filtering and detection module, and a control unit, and the voltage-adjustable FM transmitter is also provided with a voltage-adjustable switching power supply;

[0020] The control unit includes a control chip and a CAN converter;

[0021] The voltage adjustable switching power supply adopts a voltage adjustable switching power supply implementing the CAN protocol, the control chip is connected with the CAN converter, and the CAN converter is connected with the voltage adjustable switching power supply implementing the CAN protocol.

[0022] The control chip adopts STM32F107VC chip, and the control unit is provided with 485, CAN, 232 communication interfaces.

[0023] The CAN converter adopts the CAN converter whose model is TJA1050. The STM32F107VC chip is connected to the ...

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PUM

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Abstract

The invention provides a voltage-adjustable frequency modulation transmitter. The voltage-adjustable frequency modulation transmitter comprises a power amplification module, a filtering and detecting module and a control unit; the frequency modulation transmitter with the adjustable voltage is also provided with a voltage-adjustable switching power supply; the adopted voltage-adjustable switching power supply is onewhich performs a CAN protocol; a control chip is connected with a CAN converter; and the CAN converter is connected with the voltage-adjustable switching power supply which performs the CAN protocol. Based on an output power, a power supply voltage is adjusted adaptively along with the output power through CAN communication, and the total output efficiency of the adjustable switching power supply is higher than that of a DC switching power supply, so that a great effect on improvement of the efficiency of the whole transmitting system is obtained, the power consumption of the transmitter can be reduced, demands on heat dissipation can be decreased, miniaturization of the frequency modulation transmitter isfacilitated, and the transmitting distance is ensured.

Description

technical field [0001] The present invention relates to voltage adjustable FM transmitters. Background technique [0002] As an important part of the broadcast communication field, the FM transmitter is currently widely used in radio and television relay, industrial production, meteorology, and agricultural production. It is an indispensable communication device in the simplex communication field. Through recent decades of development, the previous analog broadcasting equipment has developed into digital multi-service FM synchronous broadcasting. For digital broadcasting, there are also requirements for efficiency and linearity, and equipment is developing towards small size. my country's proposal of digital broadcasting plays a key role in narrowing the performance gap between my country's FM transmission equipment and similar equipment in developed countries. There is an important restrictive factor to realize the miniaturization of FM transmitter—the efficiency of conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/02
CPCH04B1/02
Inventor 李之平吴涛李勇刘文金刘旭张伟洪勇华王洪玖汪广荣张秀斌明阳查勇
Owner 杭州众传数字设备有限公司
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