Summary
International Symposium on Antennas and Propagation
2006
Session Number:2E1b
Session:
Number:2E1b-3
A Double Negative Medium Supporting Backward Waves with Application to Microstrip Antennas
Qun Wu, Ming-Feng Wu, Fan-Yi Meng, Le-Wei Li,
pp.1-6
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
In this paper, a compact Double Negative (DNG) metamaterial unit cell, combined with Modified Split Ring Resonators (MSRRs) and metal strips is proposed. The Backward Wave property of the DNG slab is investigated and illustrated by full-wave simulations. It is shown that the DNG can exhibit double negative parameters and support backward wave in a broadband of 8.45 GHz~11.05 GHz range, so the existence of the DNG band is proven. Then the MSRRs and strips are stacked and embedded into a host substrate to construct a DNG substrate for the microstrip antenna (MSA) miniaturization. Results show that the presence of the DNG fillings can indeed greatly reduce the physical dimensions to 0.17λ and enhance the bandwidth of the MSA, while its farfield pattern is omnidirective, which is significantly different from that of a conventional half-wavelength MSA.