Ka-band slow wave structure switch chip

Abstract

The invention relates to a Ka-band slow wave structure switch chip comprising a GaAs substrate. The GaAs substrate is provided with an input switch channel and an output switch channel, and the input switch channel is connected with the output switch channel through a microstrip transmission line; the output switch channel comprises a first output channel and a second output channel, and the first output channel and the second output channel are symmetrically arranged by taking the microstrip transmission line as a symmetry axis; the input switch channel and the first output channel form a first loop, and the input switch channel and the second output channel form a second loop; each of the first loop and the second loop comprises an input end, a microstrip transmission line, a slow wave transmission line, a transmission arm and an output end which are sequentially connected in series; according to the invention, a symmetric design and a snakelike slow wave structure accord with the theory of a quarter-wavelength converter, so that the area of the whole layout of a chip is more compact, and miniaturization design is more facilitated; and the parallel design scheme enables the transmission loss of the switch to be small.

Description

technical field [0001] The invention relates to the technical field of radio frequency switch chips, in particular to a Ka-band slow-wave structure switch chip. Background technique [0002] A radio frequency switch is a circuit that controls or switches microwave signals on and off. In the Ka band, switch chips are widely used in communication transceiver systems, communication navigation systems, and microwave test systems. Especially in the communication transceiver system, miniaturized and low insertion loss switches are used for the selection of transmitter and receiver signals. The insertion loss and power capacity of the switch chip directly affect the output power and noise figure of the entire system. performance. At the same time, as the operating frequency band of the transceiver system is mostly in the millimeter wave, the entire system is highly integrated, so the miniaturization of the chip has great practical significance for the millimeter wave communicatio...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art, to provide a slow-wave structure switch chip of the Ka band, to solve the problem of radio frequency in the prior art The overall area of ​​the switch chip is large, which is not convenient for miniaturization design

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