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A Frequency-Reconfigurable UWB Antenna with Switchable Single/Dual /Triple Band Notch Functions

A Frequency-reconfigurable UWB antenna with switchable single, dual, and triple band-notch functions is presented in this study. In the proposed structure, by etching slots on the patch, the ground, and the feedline, a triple-band-notched characteristic at the WLAN, WiMAX and X-band frequencies is obtained. Then, by introducing switch modes on the slots, the antenna offers eight working modes and can realize an interconversion between UWB, UWB with single-band-notched characteristic, UWB with dual-band-notched characteristic, and UWB with triple-band-notched characteristic. Simulations show that the antenna provides good band-notched functions on the stopbands.