ABSTRACT

A compound reconfigurable monopole antenna (CRMA) having ability to change its frequency, polarisation and also pattern is presented in this paper. Only 6 PIN diodes are positioned on the monopole and ground to achieve reconfigurable operations and thus the antenna can operate over 8 different states. The radiation patterns of the proposed antenna can be tilted into two different directions. In each direction, the antenna can shift its operation in between two different frequency bands, and for each band, switching between two orthogonal circularly polarised (CP) radiation can be possible. A prototype is fabricated and measured. Based on various parametric analyses, a simple design guideline is also presented. By considering its overall simple configuration, low profile, and planar geometry, proposed antenna can be a useful candidate for future wireless applications like cognitive radio, 5 G devices, and so on.

摘要

本文提出了一种复合可重构单极天线（CRMA），能够改变其频率、极化和方向图。仅在单极子和接地上放置 6 个 PIN 二极管即可实现可重新配置操作，因此天线可以在 8 种不同的状态下工作。所提出的天线的辐射方向图可以倾斜到两个不同的方向。在每个方向上，天线都可以在两个不同的频段之间切换其操作，并且对于每个频段，可以在两个正交圆极化 (CP) 辐射之间切换。制造并测量原型。基于各种参数分析，还提出了一个简单的设计指南。考虑到其整体简单的配置、低矮的轮廓和平面几何形状，