TY - JOUR
T1 - A method to design dual-band, high-directivity ebg resonator antennas using single-resonant, single-layer partially reflective surfaces
AU - Ge, Y.
AU - Esselle, K. P.
AU - Bird, T. S.
PY - 2010
Y1 - 2010
N2 - A new method is presented to design dual-band, high- directivity, EBG-resonator antennas using simple, single-resonant, single-layer partially reflective surfaces (PRS). The large, positive gradient of the reflection phase versus frequency curve of partially reflecting surfaces, observed only close to the resonance frequency of the PRS, is exploited for this purpose. An example single-resonant PRS, based on a frequency-selective surface (FSS) composed of a printed slot array, was designed. Then it is used to design an EBG- resonator antenna to demonstrate the feasibility of achieving dual-band performance. Cavity models are employed, together with the reflection characteristics of the PRS, to understand the operation of the device at critical frequencies such as cavity resonance frequencies and the PRS resonance frequency. Antenna simulations and computed results confirm the dual-band operation of this very simple, single-layer, low- profile EBG-resonator antenna. It resonates in two bands centered at 10.5 GHz and 12.3 GHz. The peak directivity in each band is 18.2 dBi and 20.5 dBi, and the 3 dB directivity bandwidth of each band is 7.5% and 8.7%, respectively.
AB - A new method is presented to design dual-band, high- directivity, EBG-resonator antennas using simple, single-resonant, single-layer partially reflective surfaces (PRS). The large, positive gradient of the reflection phase versus frequency curve of partially reflecting surfaces, observed only close to the resonance frequency of the PRS, is exploited for this purpose. An example single-resonant PRS, based on a frequency-selective surface (FSS) composed of a printed slot array, was designed. Then it is used to design an EBG- resonator antenna to demonstrate the feasibility of achieving dual-band performance. Cavity models are employed, together with the reflection characteristics of the PRS, to understand the operation of the device at critical frequencies such as cavity resonance frequencies and the PRS resonance frequency. Antenna simulations and computed results confirm the dual-band operation of this very simple, single-layer, low- profile EBG-resonator antenna. It resonates in two bands centered at 10.5 GHz and 12.3 GHz. The peak directivity in each band is 18.2 dBi and 20.5 dBi, and the 3 dB directivity bandwidth of each band is 7.5% and 8.7%, respectively.
UR - http://www.scopus.com/inward/record.url?scp=78651527133&partnerID=8YFLogxK
U2 - 10.2528/PIERC10020901
DO - 10.2528/PIERC10020901
M3 - Article
AN - SCOPUS:78651527133
SN - 1937-8718
VL - 13
SP - 245
EP - 257
JO - Progress In Electromagnetics Research C
JF - Progress In Electromagnetics Research C
ER -