Minimized Low-Profile Wideband Antennas Using High Impedance Surface

Table 2

Performance summary and comparison of HIS antennas.

	Substrate	Ground size	Thickness	Max gain	Bandwidth
This work
Antenna on 4 × 6 substrate-less HIS	Air-gap			6.0 dBi	(0.5–0.85) GHz 52%
Antenna on 4 × 6 dielectric-substrate HIS	Teflon			5.1 dBi	(0.54–0.78) GHz 36%
[13]	RT/duroid 5880			8.7 dBi	(4.3–5) GHz 15%
[14]	RT/duroid 5880			6.0 dBi	(1.06–1.5) GHz 34%
[15]	FR4			9.4 dBi	(3.2–5) GHz 44%
[16]	RT/duroid 5880			6.9 dBi	(2–3.2) GHz 46%