ABSTRACT

Modified design of triangular-shaped microstrip antenna is proposed for circular polarized response which yields an axial ratio bandwidth of 68 MHz (∼5%) in the L-band. Furthermore, its electromagnetically coupled stacked design is presented, which yields enhanced impedance and axial ratio bandwidth of more than 1100 (∼70%) and 90 MHz (>7%), respectively. A single and stacked antenna offers a broadside pattern with a peak gain of 9 dBi. As a part of the design procedure, resonant length formulation at patch modes is presented. This serves as a guideline in the re-designing of similar antenna in a given frequency spectrum. Theoretical results have been verified experimentally with a good agreement.

摘要

针对圆极化响应提出了改进的三角形微带天线设计，在 L 波段产生 68 MHz (~5%) 的轴比带宽。此外，还展示了其电磁耦合堆叠设计，其阻抗和轴比带宽分别超过 1100 (~70%) 和 90 MHz (>7%)。单个堆叠天线可提供峰值增益为 9 dBi 的宽边方向图。作为设计过程的一部分，提出了贴片模式下的共振长度公式。这可作为在给定频谱中重新设计类似天线的指南。理论结果已通过实验验证，具有良好的一致性。