A Novel Design of Reconfigurable Active Integrated Oscillator Feedback Antenna with Electronically Controllable for WiMAX/WLAN Applications

摘要

A novel reconfigurable active oscillator feedback antenna for WiMAX/WLAN applications is presented. By using a rectangular ring with a pair of protruded Gamma-shaped strips in the active feedback antenna, two new resonances can be achieved. Also, the proposed rectangular ring with a pair of protruded Gamma-shaped strips radiating patch has a major advantage in providing tighter capacitive coupling to the line, in comparison to the known radiating patch. In order to generate DC isolation in the RF path we use a pair of gap distances in the microstrip loop. Also, by using the [S] parameters of the active element a novel design of the microwave oscillator is performed. Simulated and experimental results obtained for this antenna show that the proposed Active Integrated Antenna (AIA) has a good return loss and radiation behavior within the WiMAX/WLAN frequency range.