volume | PIER Journals

Abstract

A miniaturized ultra-wideband (UWB) antenna with quadruple reconfigurable characteristics is proposed in this paper. The first step involves the development of an elementary circular patch antenna of size 28.5 × 28.5 mm², which is subsequently modified to demonstrate UWB properties. To incorporate quad-band notch features, the radiating surface of the patch antenna is etched with four inverted U-shaped slots. The antenna has an impedance bandwidth ranges from 3.1 GHz to 12 GHz, with four specific notches located at 3.62 GHz (3.46-3.69 GHz), 3.94 GHz (3.81 GHz-3.94 GHz), 4.3 GHz (4.19 GHz-4.39 GHz), and 4.84 GHz (4.61 GHz-5.05 GHz). By incorporating four PIN diodes, the antenna is capable of attaining a range of sixteen reconfigurable states across the UWB spectrum. The design of this system successfully addresses the issue of interference caused by WiMAX, satellite communication uplink C-band, Indian national satellite system, and WLAN. The prototype was constructed and evaluated, with the results from simulation and measurement correlating well.

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Dr. Sunitha Mandava

Dr. Silpa Mandava

Dr. Bathula Santhi Kiran

Dr. Gowrisankar Kalakoti

Dr. Manasa Bandlamudi

Dr. Chandana Kotha