A wideband EBG resonator antenna with an extremely small footprint area

Abstract

An electromagnetic band gap resonator antenna (ERA) with an extremely small footprint is presented. The proposed ERA has a peak measured gain of 15.6 dBi and an excellent measured 3dB gain‐bandwidth of 27%. The four‐layer composite superstructure used in this ERA takes the shape of a circular disc with the ground plane radius equal to that of the superstructure. Its footprint area is only 1.7λ02 at the lowest operating frequency. The average measured aperture efficiency of this ERA is nearly 90%. The side lobe levels are well below −12 dB over most of the operating bandwidth and the cross polarization levels are below −17 dB. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1531–1535, 2015

A state-of-art review on performance improvement of dielectric resonator antennas

“…So different techniques have been proposed to enhance the gain as per the requirement. For ease of classification, the available literature is divided into two categories: only gain improvement and simultaneous gain and bandwidth improvement . The categories are described here.…”

“…In previous section, different techniques have been described for gain improvement. The research on simultaneous gain and bandwidth improvement is also quite interesting which is summarized here . The gain and bandwidth research by means of shape, coupling, and metamaterial are deeply analyzed here in separate subsections.…”

“…For ease of classification, the available literature is divided into two categories: only gain improvement and simultaneous gain and bandwidth improvement. [45][46][47][48][49][50][51][52][53][54][55][56][57][58][59] The categories are described here.…”

“…The research on simultaneous gain and bandwidth improvement is also quite interesting which is summarized here. [45][46][47][48][49][50][51][52][53][54][55][56][57][58][59] The gain and bandwidth research by means of shape, [45][46][47][48][49][50][51][52][53][54][55] coupling, 56,57 and metamaterial 58,59 are deeply analyzed here in separate subsections. An inclusive over view is shown in Figure 4.…”

“…The DRAs research related to gain and bandwidth by means of DR shape, [45][46][47][48][49][50] EBG/fractal, [51][52][53] superstrate/substrate 50,54,55 are discussed here. Luk et al 45 have studied an aperture coupled stacked DRA for improving gain and bandwidth.…”