论文信息 - Multiple superstrates technique for a broadband cavity resonance antenna (CRA)

Multiple superstrates technique for a broadband cavity resonance antenna (CRA)

A cavity resonance antenna (CRA) with three dielectric superstrates is examined and its performance is compared to those of the single superstrate CRAs of the lowest two resonances. The broadside directivity, bandwidth, and directivity-bandwidth product of all three antennas are investigated. When compared to the single superstrate CRAs, an appropriately designed three superstrate CRA can enhance to the maximum directivity, the bandwidth, or both, a result that is reflected as more than 75% increase to the directivity-bandwidth product in some cases. Theoretical results are validated by simulation using commercial numerical electromagnetics software.

M. A. Al-Tarifi | A. K. Amert | K. W. Whites | D. E. Anagnostou

[1] Nicolaos G. Alexopoulos,et al. Gain enhancement methods for printed circuit antennas , 1984 .

[2] J. C. Vardaxoglou,et al. A broadband high-gain resonant cavity antenna with single feed , 2006, 2006 First European Conference on Antennas and Propagation.

[3] David R. Jackson,et al. A leaky-wave analysis of the high-gain printed antenna configuration , 1988 .

[4] G. V. Trentini. Partially reflecting sheet arrays , 1956 .

[6] W. Chew. Waves and Fields in Inhomogeneous Media , 1990 .

[7] Paolo Burghignoli,et al. Highly-directive planar leaky-wave antennas: a comparison between metamaterial-based and conventional designs , 2006 .