A novel flexible low-profile double-notch reconfigurable UWB antenna design

This study introduces a flexible, low-profile notch reconfigurable antenna that attains dual-notch attributes by integrating U-shaped and Ω-shaped slots onto the patch. Reconfigurable operating frequency band covering 2.6~13.7GHz could be achieved by employing two PIN diodes loaded onto the notch structure with four distinct operating states. Besides, this antenna effectively mitigates narrowband interference within the 2.6~13.7GHz operating frequency band, particularly in WiMAX, International Satellite and WLAN bands. A maximum Peak Gain exceeding 5.6dBi with commendable radiation characteristics could be achieved with dimensions of 35mm × 25mm × 1mm. Furthermore, the antenna maintains relatively stable impedance matching properties even under certain degrees of bending.