Research Article
Analysis and Design of Cavity-Backed Probe-Fed Hybrid Microstrip Antennas on FR4 Substrate
Table 4
Comparisons between CBHM and SIW antenna characteristics.
| | CBHM | -1 | -2 | -3 | -4 |
| Bandwidth MHz | 110 | 109 | 109 | 107 | 101 | Directivity dB | 7.4 | 7.4 | 7.1 | 6.8 | 6.5 | Radiation efficiency % | 69.2 | 69.3 | 68.6 | 67.3 | 66.2 | CPLH-P dB | −41.6 | −37.5 | −32.5 | −31.6 | −29.2 | ΔCPLH-P dB | −43.5 to −39.0 | −39.8 to −34.7 | −34.7 to −29.7 | −33.4 to −28.8 | −31.4 to −26.0 |
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