Research Article
Compact Broadband Circularly Polarized CPW-Fed Antenna with Characteristic Mode Analysis
Table 1
Comparisons of the proposed and other CP antennas.
| | Ref. | Dimensions (λ0 × λ0 × λ0) | Impedance bandwidth | 3-dB AR bandwidth | Peak gain (dBic) |
| | [3] | 0.77 × 0.77 × 0.008 | 132.0% (0.85–4.15 GHz) | 95.7% (1.20–3.40 GHz) | 4.7 | | [4] | 0.48 × 0.47 × 0.009 | 72.0% (2.26–4.85 GHz) | 65.0% (2.44–4.85 GHz) | 3.8 | | [8] | 0.71 × 0.50 × 0.009 | 133.0% (1.22–5.97 GHz) | 76.0% (2.00–4.47 GHz) | 3.9 | | [21] | 0.54 × 0.54 × 0.019 | More than 100% | 91.0% (2.10–5.60 GHz) | 3.2 | | [22] | 1.4 × 1.4 × 0.057 | 38.8% (4.42–6.55 GHz) | 14.3% (5.20–6.00 GHz) | 9.4 | | [26] | 0.36 × 0.28 × 0.017 | 84.6% (2.35–5.8 GHz) | 43.4% (2.40–3.73 GHz) | About 3.8 | | Prop. | 0.76 × 0.71 × 0.038 | 83.8% (3.98–9.72 GHz) | 70.3% (4.59–9.57 GHz) | 3.1 |
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Impedance bandwidth: |S11| < 10 dB, AR bandwidth: AR<3 dB, λ0: free-space wavelength at the center frequency of the 3-dB AR bandwidth.
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