Microstrip-Fed Monopole Antenna with Dual Notch Bands and Ultra-Wideband Characteristics for Wireless Communications

This study unveils a new ultra-wideband (UWB) antenna design that incorporates a dual band-notched feature for enhanced wireless communication. The design includes a trapezoidal radiation patch adorned with two rotated T-shaped slits, a modified rectangular feeding line with an inverted U-shaped slot, and a trapezoidal grounding plane. The performance results demonstrate that the antenna operates over a wide frequency range from 2.8 to 12.5 GHz, encompassing the entire UWB spectrum from 3.1 to 10.6 GHz. A key highlight of this antenna is its dual band-notched functionality, specifically at 3.8 GHz (covering 3.3-4.2 GHz) and 5.5 GHz (spanning 5–6 GHz), designed to effectively avoid interference from WLAN, C-band, and WiMAX frequencies. The study rigorously assesses the investigated antenna, confirming its capability to deliver satisfactory frequency responses, radiation patterns, as well as efficiency and gain levels as per the intended design. The suggested antenna system successfully meets the stringent requirements for band notched UWB communications, underscoring its potential for seamless integration into modern wireless networks.