Research Article
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% |
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