Study on circularly-polarized multi-band microstrip antenna for next generation ubiquitous communication

在这项研究中，提出了两种用于圆极化的多频带天线。其中一个是一个正方形微带天线（MSA）与一对L形狭缝，另一个是一个正方形MSA与两对曲柄狭缝。通过仿真，阐明了工作原理和天线特性。天线设计的GPS应用程序在这项研究中获得的设计程序。这两种天线在GPS频段的圆极化下具有良好的性能。

In this study, two multiband-antennas for circular polarization are proposed. One of them is a square microstrip antenna (MSA) with one pair of L-shaped slits and the other is a square MSA with two pairs of crank slits. The operational principles and the antenna characteristics are clarified by simulations. The antennas are designed for GPS application by the design procedures obtained in this study. The two antennas have good performances in circular polarization at the GPS bands.