A state-of-art review on band-notch characteristics in UWB antennas

Ultra-wideband technology has experienced a rapid growth over the last decade for its contribution in different sectors of human society. Printed antennas are considered as preferred platform for implementing this technology because of its alluring characteristics like light weight, low cost, ease of fabrication, integration capability with other systems, etc. Antennas developed for ultra-wideband applications are desired to have notch characteristics for avoiding interference with other existing radio communication systems. The techniques related to design and developments of printed band-notched antennas are continuously upgraded for improving the antenna performance. In this article, a comprehensive review has been carried out on ultra-wideband antennas with band notch characteristics proposed in around last decade. The band notched UWB antennas available in the literature have broadly been classified into five different categories based on their notch characteristics like single band-notch, dual band-notch, triple band-notch, quad/multiple band-notch, and reconfigurable/tunable band-notch, respectively. This review exercise may be helpful for beginners working on ultra-wideband band-notched antennas and also such a review process is not available in the open literature to the best of author's knowledge.