| 摘要 |
Patch antenna ( 100 ) for a wireless communications device has a reduced size. The patch antenna is operable on a fundamental frequency f<SUB>0 </SUB>and a first harmonic f<SUB>1 </SUB>of the fundamental frequency, with substantially co-located peak gain directions on both frequencies. The patch antenna ( 100 ) is formed from a conductive ground plane ( 102 ) of generally rectangular shape. A first aperture ( 108 ) provided in the conductive ground plane member ( 102 ) defines a bow-tie shape. Additional elongated apertures ( 118, 120 ) are provided for reactive loading. The elongated apertures ( 118, 120 ) disrupt the phasing of surface currents within the conductive ground plane member ( 102 ) around the periphery of the first aperture ( 108 ). |
