UWB ANTENNA WITH BAND NOTCH CHARACTERSTICS

Abstract

Ultra-Wideband (UWB) communication systems have gained significant attention due to their high data rates, low power consumption, and wide frequency coverage. However, the coexistence of UWB systems with narrowband wireless services such as WLAN and WiMAX often causes electromagnetic interference. To address this issue, UWB antennas with band notch characteristics have been developed to suppress unwanted frequency bands. This project presents the design and analysis of a compact UWB antenna integrated with band-notch functionality. The proposed antenna operates over a wide frequency range while effectively rejecting specific interference bands. Band-notch behavior is achieved using techniques such as slots, parasitic elements, or resonant structures embedded in the antenna design. The antenna structure is optimized to maintain good impedance matching and stable radiation characteristics across the operating band. Simulation results demonstrate satisfactory performance in terms of return loss, gain, and radiation patterns. The notched band effectively reduces interference from existing wireless systems. Compact size and simple geometry make the antenna suitable for modern wireless devices. The design ensures minimal distortion of UWB signals outside the rejected band. The proposed antenna is analyzed using electromagnetic simulation tools. Performance evaluation confirms compliance with UWB standards.