Study and design of broadband nonuniform ripple-wall TE0n-TE0(n+1) mode converters

Author:

Sun Xu ,Zhao Qing ,Li Hong-Fu ,

Abstract

Based on the coupled wave theory, this paper presents the design, numerical analysis, and simulation of two types of TE0n-TE0(n+1) ripple-wall waveguide mode converters: a uniform ripple-wall converter and a nonuniform ripple-wall waveguide converter. For the first type,17.17GHz,six-period TE02-TE03 mode converter and 34.30GHz,six-period TE01-TE02 mode converter were operative; and 34.30GHz,six-period TE01-TE02 for the nonuniform one was operative. The design study is focused on the maximization of the conversion efficiency and mode purity coupled with a broad bandwidth. The nonuniform one seems to have a significant advantage over the uniform one, its conversion efficiency reaches 99.5% at center frequency and has a conversion bandwidth of more than 1.5GHz. Simulation results agree well with the theoretical predictions.

Publisher

Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences

Subject

General Physics and Astronomy

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