论文部分内容阅读
提出一种新的小型圆极化环形微带天线,通过在环形贴片内外边缘非主要辐射区域开一组狭长缝隙获得小型化特性,在环形贴片内边缘135°、315°处相对位置开一对调谐窄缝隙实现圆极化,并用带状线在环形贴片内边缘馈电。这种天线表现出了极好的圆极化特性而且很容易在低频段匹配到50Ω,与普通带状线馈电圆极化环形微带天线相比,天线谐振频率下降,尺寸缩小了近50%。
A new miniature circularly polarized circular microstrip antenna is proposed. The miniaturization characteristics of the miniature circularly polarized circular microstrip antenna are obtained by opening a set of long and narrow slots in the non-main radiating region of the inner and outer edges of the ring patch. The relative positions of the inner patch edges are 135 ° and 315 ° A pair of tuning narrow slits achieve circular polarization and feed the inner edge of the ring patch with a stripline. This antenna shows excellent circular polarization characteristics and is easily matched to 50Ω in the low frequency range. Compared with the conventional stripline-fed circularly polarized circular microstrip antenna, the antenna resonant frequency is reduced and the size is reduced by nearly 50 %.