A FOLDED SLOT ANTENNA WITH PRE-ETCHED CAVITY AND BCB SUPPORT MEMBRANE ON SILICON WAFER
Author(s) -
Tian-Xi Wang,
Mei Han,
Le Luo
Publication year - 2013
Publication title -
progress in electromagnetics research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.245
H-Index - 33
ISSN - 1937-6480
DOI - 10.2528/pierl13032001
Subject(s) - wafer , materials science , optoelectronics , silicon , antenna (radio) , membrane , electrical engineering , engineering , chemistry , biochemistry
This letter demonstrates a technique for a folded slot antenna fabricated on low resistive silicon wafer, using pre-etched cavity and Benzocyclobutene (BCB) support membrane. The most distinctive feature of this method is that a cavity is pre-etched before the antenna fabrication process using low-cost potassium hydroxide (KOH) wet etching. BCB membrane is employed to support the antenna above the cavity for its low permittivity as well as excellent thermal and mechanical stability. The fabrication process discussed in detail and the fabricated antenna was characterized. Experimental results show that the antenna resonates at 15.4GHz with a very wide impedance bandwidth, up to 14.6%.
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