Research Article
Wide E-Plane Beamwidth Microstrip Patch Antenna Using H-Shaped Gap-Coupling with Three Parasitic Patches for the K-Band
Table 3
Performance comparison of the published wide-beamwidth antennas for the K-band.
| | Ref. | Freq. (GHz) | Total volume with ground plane | HPBW1 | FBW2 | Gain (dB) | FOM1 (BPBW/λo3) | FOM2 (gain/λo3) | FOM3 (gain∙BPBW/λo3) | Multilayers | Note |
| | [6] | 23.8 | | 130° | 14.5% | 12.2 | 66 | 8.4 | 1,092 | O | Conducting via parasitic loop, arrays | | 23.7 | | 150° | 16.9% | 11.1 | 70 | 6.0 | 904 | O | Conducting via parasitic mushroom-like elements, arrays | | [33] | 24.25 | | 140° | 5.4% | 8 | 776 | 35.0 | 4,896 | O | Magnetic dipole, arrays | | [37] | 24 | | 140° | 5.8% | 10.5 | 304 | 24.3 | 3,409 | O | Coupled-mode patch, arrays | | [38] | 24 | | 145° | 25% | 11.59 | 67 | 6.7 | 971 | X | Grid array, two rows with 16 and 17 elements | | This work | 24.1 | | 143.4° | 2.1% | 4.82 | 2,451 | 51.8 | 7,435 | X | Parasitic elements with H-shaped gap-coupling |
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1Wider half-power beamwidth for E- or H-plane. 2Fractional bandwidth.
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