TY - JOUR
T1 - Study of a Terahertz-Band Rectangular TE30/TE40/TE50Mode Converter with the Same Exciting Topology
AU - Lin, Jujian
AU - Shu, Guoxiang
AU - Lin, Guangxin
AU - Li, Qi
AU - Liao, Jiacai
AU - He, Jingcong
AU - Ren, Junchen
AU - Deng, Junzhe
AU - Chang, Zhiwei
AU - Xu, Biaogang
AU - Yin, Huabi
AU - Ruan, Cunjun
AU - He, Wenlong
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2023/3/1
Y1 - 2023/3/1
N2 - A novel methodology of mode conversion from rectangular TE10 mode to TE30/TE40/TE50 modes with the same exciting topology is proposed in this article. The proposed mode converter compromises an H-plane T-junction power dividing network and a mode exciting structure based on two coupling apertures. One of the most significant highlights of this geometry is that various TEm0} (m = 3, 4, 5, 6, 7, ) high-order modes could be excited just by adjusting the width of the overmoded output waveguide. Terahertz-band (230-300 GHz) rectangular TE30/TE40/TE50 mode converters were optimized and 1 dB transmission bandwidths of 49.4, 32.5, and 29.0 GHz were obtained, respectively. Within these bandwidths, the port reflections were lower than -15 dB. Two kinds of back-to-back joined rectangular TE30 mode converter prototypes with different cutting planes were fabricated and measured. The measured S-parameters are in good agreement with the simulated ones having considered the conductor loss, machining errors, and assembling errors, which verifies the feasibility of the proposed mode conversion methodology.
AB - A novel methodology of mode conversion from rectangular TE10 mode to TE30/TE40/TE50 modes with the same exciting topology is proposed in this article. The proposed mode converter compromises an H-plane T-junction power dividing network and a mode exciting structure based on two coupling apertures. One of the most significant highlights of this geometry is that various TEm0} (m = 3, 4, 5, 6, 7, ) high-order modes could be excited just by adjusting the width of the overmoded output waveguide. Terahertz-band (230-300 GHz) rectangular TE30/TE40/TE50 mode converters were optimized and 1 dB transmission bandwidths of 49.4, 32.5, and 29.0 GHz were obtained, respectively. Within these bandwidths, the port reflections were lower than -15 dB. Two kinds of back-to-back joined rectangular TE30 mode converter prototypes with different cutting planes were fabricated and measured. The measured S-parameters are in good agreement with the simulated ones having considered the conductor loss, machining errors, and assembling errors, which verifies the feasibility of the proposed mode conversion methodology.
KW - Coupling apertures
KW - mode converter
KW - same exciting topology
KW - terahertz-band
UR - https://www.scopus.com/pages/publications/85141565241
U2 - 10.1109/TMTT.2022.3217562
DO - 10.1109/TMTT.2022.3217562
M3 - 文章
AN - SCOPUS:85141565241
SN - 0018-9480
VL - 71
SP - 1216
EP - 1226
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 3
ER -