Multi-channel microwave power synthesizer for analog/digital TV transmitter

A microwave power and synthesizer technology, applied in color TV parts, TV system parts, TV and other directions, can solve the problems of inability to effectively meet high-power synthesis, synthesis circuit damage, etc., and achieve easy amplitude and phase balance, The effect of avoiding power loss and facilitating connection
CN101035208AInactive Publication Date: 2007-09-12杭州南广科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
杭州南广科技有限公司
Publication Date
2007-09-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is a multichannel microwave power synthesizer for analog / digital TV transmitter, comprising baseplate, middle plate and top cover plate, which are all of a one-piece metal substrate; the right side of the top cover plate is equipped with a group of input connectors and an output connector at intervals, where the input connectors are located on an equi-radius circle with the output connector as the center; the back of the top cover plate, the two sides of the middle plate and the right side of the baseplate are all made with milled grooves, combinationally composing the cavity part of inner conductor transmission lines, and the baseplate and heat radiator are integrally designed. As compared with the existing techniques, it has advantages of easy to make, good synthesis performance, and good heat radiating effect, and especially applied to high power synthesis.
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Description

technical field

[0001] The invention relates to a power combiner, in particular to a multi-channel microwave power combiner for analog / digital television transmitters. Background technique

[0002] The basis for the development of all solid-state technology for TV transmitters is the continuous progress of VHF and UHF solid-state device manufacturing technology. In order to improve efficiency, the all-solid-state power amplifier adopts Class A and B linear amplification methods, but the output capacity of a single tube is limited. To increase the power level of the transmitter, only the method of parallel operation of multiple tubes can be used, but the parallel connection of multiple tubes requires multi-stage power. Synthesis can form a power amplifier with a certain power level. This technology of superimposing the output power of multiple devices is the power combining technology. The use of power combining technology can improve the reliability of the output device, r...

Claims

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