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Broadband millimeter‐wave composite cavity backed antenna with bowtie exciter
Author(s) -
Qu ShiWei,
Ng Kungbo
Publication year - 2013
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.27528
Subject(s) - exciter , microstrip , microwave , optics , printed circuit board , antenna (radio) , wideband , microstrip antenna , broadband , optoelectronics , engineering , aperture (computer memory) , materials science , electrical engineering , slot antenna , acoustics , physics , telecommunications
A wideband cavity‐backed antenna is proposed in this article.For performance improvement, an elliptical composite cavity is adopted and it is excited by a rounded bowtie dipole through a transition from a microstrip line to a parallel strip line. To reduce the fabrication errors, the antenna aperture is designed to be over 0.84 wavelength at the lowest operating frequency, and the exciter is built on a substrate along with the transition by the printed circuit board (PCB) techniques. Measurements show that the antenna can be operated in a frequency band of 30.6–70 GHz for SWR ≤ 2 and stable radiation patterns. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1101–1104, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27528