A Novel Design Approach for a 60 GHZ Circularly Polarized Ebg Antenna

Abstract

Abstract-This article focuses on the development of a high gain, broadband, circularly polarized Electromagnetic Band Gap (EBG) antenna operating at 60 GHz. The designed antenna is configured with a superstrate based on a frequency selective surface (FSS) placed in front of a cross dielectric resonator antenna (XDRA), installed into a ground plane, which acts as an excitation source. A fast Leaky-Wave approach based on transverse equivalent network (TEN) is used to deduce analytical radiation patterns formulas of the proposed antenna. The proposed analytical model was implemented and verified by a comparison with both numerical and experimental results. The reported results showed very satisfactory performances with an achievable impedance bandwidth (S 11 < −10 dB) of 11.7% from 56 to 63 GHz, an axial-ratio bandwidth (AR < 3 dB) of 5.4% from 58.9 to 62.1 GHz and a stable gain of 16.7 dBi within the passband. A good agreement among analytical, numerical and measured results is successfully achieved and falls well within initially set specifications.

Standing-Wave Feeding for High-Gain Linear Dielectric Resonator Antenna (DRA) Array

“…Because of this, new feeding techniques focus on avoiding such losses, for example, in [29], the authors proposed the use of a single microstrip line to feed the whole array. Although this feeding technique is simple and of low cost, the resulting gain is relatively small (15 dBi using 9 elements), and its efficiency is below 80% [30]. Efficiency can be enhanced in the case of feeding only a single element and turning the rest of the array elements into parasitic elements, as in [31]; however, field distribution is not the same for all elements, which results in relatively low gain.…”

Dual-Circularly Polarized 60 GHz Beam-Steerable Antenna Array with 8 × 8 Butler Matrix

“…Meanwhile, polarization diversity and the use of circular polarization are important to improve the spectral efficiency and compensate for the polarization mismatch in wireless communication systems. In particular, the use of circular polarization can effectively suppress multi-path fading in line-of-sight (LOS) environments and give a higher probability of a successful link [13][14][15][16][17][18]. This is due to the fact that circularly polarized signals are much better at penetrating and bending around obstacles compared with linearly polarized signals.…”