Research Article
A Compact Dual-Band Circularly Polarized Antenna with Wide HPBWs for CNSS Applications
Table 1
Performance comparison between the proposed antenna and the previous dual-band antennas.
| | Antenna structure | Overall dimension | −10 dB bandwidth (%) | 3 dB AR bandwidth (%) | HPBWs (°) | Max gain (dBic) | Radiation efficiency (%) |
| | Proposed antenna | 0.211λ0 × 0.211λ0 × 0.057λ0 | 5.5
6.1 | 4.2
2.6 | 120
116 | 3.4
2.9 | 77
72 | | Ref. [5] | 0.23λ0 × 0.23λ0 × 0.07λ0 | ≥20
≥20 | Exact values not specified | ≤100
≤100 | 3.6
3.8 | 86
82 | | Ref. [6] | 0.47λ0 × 0.42λ0 × 0.098λ0 | 12.7
11.4 | 1.9
2.1 | ≤80
≤80 | 5.0
7.0 | Exact values not specified | | Ref. [13] | 0.448λ0 × 0.448λ0 × 0.077λ0 | 2.3
7.2 | 0.6
1.4 | ≤80
≤80 | 4.3
6.4 | Exact values not specified | | Ref. [14] | 0.491λ0 × 0.491λ0 × 0.164λ0 | 6.3
22.0 | 1.9
7.3 | ≤80
≤80 | 6.3
7.5 | 90
97.4 | | Ref. [16] | 0.368λ0 × 0.368λ0 × 0.122λ0 | 1.4
6.5 | 0.8
2.2 | 82
82 | 7.0
6.7 | 95
87 | | Ref. [17] | 0.483λ0 × 0.483λ0 × 0.015λ0 | 2.3
3.0 | 0.6
0.7 | 100
114 | 3.9
3.9 | Exact values not specified | | Ref. [21] | 0.52λ0 × 0.52λ0 × 0.224λ0 | ≥10
≥10 | ≥10
≥10 | 135
112 | 4.2
4.2 | Exact values not specified |
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