Premium
Design of a high‐gain ultra‐wideband planar dipole antenna using LC tanks, chip resistors, and dual‐layer frequency selective surface
Author(s) -
Shadrokh Shahin,
Yu Yiqiang,
Jolani Farid,
Chen Zhizhang
Publication year - 2014
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.28590
Subject(s) - dipole antenna , wideband , materials science , antenna measurement , optoelectronics , microstrip antenna , antenna gain , coaxial antenna , optics , electrical engineering , engineering , antenna (radio) , physics
In this article, a low‐profile, high‐gain, ultra‐wideband (UWB) planar dipole antenna is presented for radar imaging applications. The antenna is loaded with open complementary double concentric split‐hexagonal‐ring resonators (LC tank) and chip resistors, and backed with a novel double‐layer frequency selective surface reflector for gain enhancement. A broadband microstrip to parallel‐plate transformer is designed as the feeding structure of the antenna to provide impedance matching and balanced‐to‐unbalanced transition. The measurement results show the proposed antenna operates over the frequency bandwidth of 0.65–3.8 GHz with S 11 < −10 dB (VSWR) and smooth gains in the range of 6.2–9 dBi. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2369–2373, 2014