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Dual frequency band and polarization reconfigurable antenna for mobile devices

机译：用于移动设备的双频段和极化可重配置天线

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摘要

This paper presents the design of a compact planar inverted-F antenna (PIFA) with reconfigurable dual resonance frequency of 800 MHz and 1.4 GHz, and switchable horizontal and vertical polarization for mobile devices. PIN diodes are used to electronically control the antenna's electrical path width so as to achieve the desired resonance frequencies. The narrower the electrical path, the higher the resonance frequency. The antenna comprises a coupled parasitic shorted strip and feeding strip. By controlling the ON/OFF states of two PIN diodes, four operation modes from two frequencies and two polarizations can be achieved. The proposed antenna has a gain of 3.7 dBi, efficiency of up to 92%, and a reflection coefficient of less than -10 dB over the resonant bands for both horizontal and vertical polarizations.
机译：本文介绍了一种紧凑的平面倒F天线（PIFA）的设计，该天线具有可重新配置的800 MHz和1.4 GHz的双谐振频率，以及可移动设备的水平和垂直极化。 PIN二极管用于电子控制天线的电气路径宽度，以实现所需的谐振频率。电气路径越窄，谐振频率越高。该天线包括耦合的寄生短路带和馈送带。通过控制两个PIN二极管的ON / OFF状态，可以实现两种频率和两种极化的四种工作模式。所提出的天线的增益为3.7 dBi，效率高达92％，并且在水平和垂直极化的谐振频带上的反射系数都小于-10 dB。

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