A Compact Reconfigurable Dual Band-Notched Ultra-Wideband Antenna using Varactor Diodes

Sam Weng Yik (Universiti Teknikal Malaysia Melaka (UTeM))
Zahriladha Zakaria (Universiti Teknikal Malaysia Melaka (UTeM))
Herwansyah Lago (Universiti Teknikal Malaysia Melaka (UTeM))
Noor Azwan Shairi (Universiti Teknikal Malaysia Melaka (UTeM))

TELKOMNIKA (Telecommunication Computing Electronics and Control)
Vol 16, No 6: December 2018

In this paper, a reconfigurable dual band-notched ultra-wideband (UWB) antenna is presented. The antenna design consists of a circular shape with two pairs of the L-resonator. To realize the notch characteristics in WLAN at 5.2 GHz and 5.8 GHz bands, the half wavelength of the L-resonator is introduced in the design. The T-shaped notch is etched in the ground to enhance the bandwidth which covers the UWB operating frequency range from 3.219 – 10.863 GHz. The proposed reconfigurable dual band-notched UWB antenna shows good impedance matching for the simulated in the physical layout. Furthermore, the proposed antenna has a compact size of 37.6 x 28 mm2. This proposed reconfigurable design can provide an alternative solution for the wireless system in the designing of a band-notched antenna with a good tuning capability.