A power signal combining apparatus for a transmitter

Abstract

The invention discloses a power signal combining apparatus for a transmitter, can solve the problem that a microstrip combiner inside a traditional power combiner can only be used in small power combining because of twothin copper skin and low power bearing capacity of a trnamsision line, and a cavity combiner inside the power combiner can bear relatively large power, but has defects of no isolation, reverse standing wave difference and the like. The power signal combining apparatus comprises a tapered outer conductor, a tapered inner conductor, a cylindrical outer conductor, an inner separated curved surface conductor, an output terminal and four input terminals, one end of the cylindrical outer conductor is electrically connected with the four input terminals, the other end of the cylindrical outer conductor is connected with the tapered outer conductor, and an output terminal is arranged on the tapered outer conductor. In work, four paths of power signals are electrically connectedwith the separated curved surface conductor through a coaxial transmission cavity, and the four paths of power signals are combined and output, and a waveguide and the coaxial transmission cavity areused, power that is borne is relatively large, and the problem of power signal crosstalk among the input ports is solved.

Description

technical field [0001] The invention relates to the technical field of microwave communication, in particular to a power signal synthesizing device for a transmitter. Background technique [0002] In devices that provide high-power signals, such as tube transmitters and solid-state transmitters, it is generally necessary to amplify weak radio frequency signals to kilowatt or megawatt power levels and transmit them to load devices. For solid-state transmitters, due to the limited power amplification capability of a single amplifying solid-state module, it is difficult to meet high power requirements, which requires a microwave device that synthesizes the output power signals of multiple amplifying solid-state modules for output. [0003] Existing power combining devices mainly include microstrip combiners and cavity combiners. Because the copper skin of the transmission line is too thin, the microstrip combiner has the problem of low power bearing capacity, so it is only sui...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power signal combining device for a transmitter, which can solve the problem that the traditional microstrip combiner inside the traditional power combining device is only suitable for Low power combining conditions, and although the cavity combiner inside the power combining device can withstand relatively large power, there are shortcomings such as no isolation, reverse standing wave difference, etc. There is also a microstrip combiner developed and evolved The strip line combiner also has the problems of discontinuity and poor reliability.

Images