Open AccessStudy and design of broadband nonuniform ripple-wall TE0n-TE0(n+1) mode converters
Author(s) -
Xu Andy Sun,
Qian Zhao,
Hongfu Li
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.2130
Subject(s) - ripple , converters , broadband , bandwidth (computing) , center frequency , energy conversion efficiency , physics , electronic engineering , materials science , computer science , electrical engineering , optics , optoelectronics , telecommunications , engineering , band pass filter , voltage
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 type17.17GHzsix-period TE02-TE03 mode converter and 34.30GHzsix-period TE01-TE02 mode converter were operative and 34.30GHzsix-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.