DESIGN OF A HIGH-GAIN ULTRA-WIDEBAND PLANAR DIPOLE ANTENNA USING LC TANKS, CHIP RESISTORS, AND DUAL-LAYER FREQUENCY SELECTIVE SURFACE

作者：Shadrokh, Shahin^*; Yu, Yiqiang; Jolani, Farid; Chen, Zhizhang

来源：Microwave and Optical Technology Letters, 2014, 56(10): 2369-2373.

DOI：10.1002/mop.28590

• planar dipole
• ultra-wideband
• frequency selective surface
• balun
• LC tank

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.

• 出版日期2014-10