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设计了一种小型化的方形缝隙圆极化(CP)平面印刷天线,该天线采用在方形缝隙的四个边上均加载尺寸相同的矩形缝隙,使其具有更低的谐振频率;在方形缝隙的任一个加载缝隙里插入与外围地相连的细金属带条以产生微扰,激励出一对相位差90°的差分正交简并模,从而辐射圆极化波。对天线模型进行了优化设计和实物加工,测试结果表明,缝隙加载后天线谐振频率降低了约10%,验证了该小型化措施的有效性;另外该天线在3%的带宽内轴比<3dB,具有良好的圆极化特性。
A miniaturized square slot circularly polarized (CP) planar printed antenna is designed. The antenna is loaded with rectangular slots with the same size on all four sides of the square slot, so that it has a lower resonant frequency. In the square slot Inserted into the peripherally connected fine metal strips to generate perturbations to excite a pair of differential quadrature degenerate modes with a phase difference of 90 ° so as to radiate circularly polarized waves. The antenna model was optimized design and physical processing. The test results show that the antenna resonant frequency is reduced by about 10% after the gap loading, which verifies the effectiveness of the miniaturization measures. In addition, , With good circular polarization characteristics.