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An improved broadband transition between microstrip and empty substrate integrated waveguide
Author(s) -
Peng Hao,
Xia Xinlin,
Dong Jun,
Yang Tao
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30015
Subject(s) - microstrip , return loss , broadband , microwave , bandwidth (computing) , materials science , substrate (aquarium) , waveguide , insertion loss , optoelectronics , optics , telecommunications , physics , engineering , antenna (radio) , oceanography , geology
In this letter, an improved broadband transition between microstrip and empty substrate integrated waveguide (ESIW) is proposed. The transition structure consists of a gradient microstrip line, a taper extended into ESIW, and ESIW section. Compared with the previous studies, the gradient microstrip line is introduced to expand the operating bandwidth and get a better performance, especially for the thinner dielectric substrate. The simulated and measured results have a good agreement. A back‐to‐back transition is designed, manufactured, and tested. For a single transition, the return loss and insertion loss are better than 13.5 and 0.75 dB from 6.6 to 16.45 GHz (85.5%), respectively. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2227–2231, 2016
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