Premium
A 3 dB E‐plane waveguide directional coupler employing micromachining technique for terahertz application
Author(s) -
Deng JiangYu,
Duan JunPing,
Liu Rui,
Zhang BinZhen
Publication year - 2020
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.32470
Subject(s) - hfss , terahertz radiation , hybrid coupler , power dividers and directional couplers , surface micromachining , rat race coupler , return loss , bandwidth (computing) , magic tee , waveguide , materials science , optics , optoelectronics , engineering , electrical engineering , physics , telecommunications , fabrication , microstrip antenna , medicine , alternative medicine , pathology , antenna (radio)
In this work, 3 dB branch‐line waveguide in the range of 335‐415 GHz directional coupler is proposed, where the insertion loss is less than 0.9 dB and the directionality is better than 20 dB. The coupler is composed of three “crossing”‐shaped structures, which can effectively enhance the directionality and coupling, based on a certain broad bandwidth. The designed coupler has been modeled and optimized, using commercial full‐wave simulation software HFSS, fabricated by the UV‐LIGA process. In addition, its deformation was theoretically analyzed at different pressures by ANSYS software to test its practicability. Both of the test and simulated results have a nice correlation. We conclude that our proposed coupler has excellent performance and can be used for the investigation of submillimeter wave components in terahertz applications.