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Voltage Adjustable FM Transmitter

An FM transmitter and adjustable technology, applied in electrical components, transmission systems, etc., can solve problems such as increasing space requirements, and achieve the effects of reducing heat dissipation requirements, improving efficiency, and ensuring miniaturization

Active Publication Date: 2019-04-12
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 FM Transmitter
  • Voltage Adjustable FM Transmitter
  • Voltage Adjustable FM Transmitter

Examples

Experimental program
Comparison scheme
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, which includes a power amplification module, a filtering and detection module, and a control unit. The voltage-adjustable frequency-modulation transmitter is also provided with a voltage-adjustable switching power supply; The voltage-adjustable switching power supply of 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 executing the CAN protocol. According to the size of the output power, the power supply voltage adaptively adjusts the voltage according to the output power through CAN communication, the adjustable switching power supply is superior to the DC switching power supply in the total output efficiency, and has a great effect on improving the efficiency of the entire transmitting system. The power consumption of the transmitter can be reduced, the heat dissipation requirement of the transmitter can be reduced, and the miniaturization of the FM transmitter can be ensured and the transmission distance can be 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 Patents(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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