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

Abstract

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.

Ultrawideband high‐gain dual‐polarized antenna with anti‐interference capability

“…Figure shows the configuration of the UWB dual‐polarized antenna with single band‐notch. To produce notch frequency, the conventional method focuses on cutting slot of various shapes in the radiating patch, ground plane, or feed‐line . This method is applied in our design and here, a set of four curved slots are inserted into the four radiating arms.…”

A planar CPW fed UWB antenna with dual rectangular notch band characteristics incorporating U‐slot, SRRs , and EBGs

“…Ultra-wideband (UWB) technology provides a unique solution in the field of high-speed short-range indoor communication. [1][2][3][4][5][6] However, it is still a major challenge to avoid interference with already existing bands in the UWB spectrum, such as , 5.8 GHz), X-band downlink, and uplink for satellite communication and 7.9 GHz to 8.4 GHz), C-band uplink and downlink for satellite communication (5.925-6.425 GHz and 3.7-4.2 GHz), and ITU-R (7.725-8.50 GHz). 3,4 Thus, UWB antennas should possess band notch characteristics.…”

“…[1][2][3][4][5][6] However, it is still a major challenge to avoid interference with already existing bands in the UWB spectrum, such as , 5.8 GHz), X-band downlink, and uplink for satellite communication and 7.9 GHz to 8.4 GHz), C-band uplink and downlink for satellite communication (5.925-6.425 GHz and 3.7-4.2 GHz), and ITU-R (7.725-8.50 GHz). 3,4 Thus, UWB antennas should possess band notch characteristics. [5][6][7][8][9] Multiple design techniques have been provided in the literature for achieving band-notch characteristics in the UWB antennas, that is, slot and parasiticelementloading, 10,11 using fractals, 12 embedding split-ring resonators (SRRs) and electromagnetic bandgap (EBG) structures.…”

Coplanar waveguide‐based ultra‐wide band antenna with switchable filtering of WiMAX 3.5 GHz and WLAN 5 GHz signals

“…Since then, the band has been extensively used, resulting in a problem of interferences with coexisting wireless systems WiMAX (IEEE 802.16 3.30‐3.70 GHz) and wireless local area network (WLAN) IEEE 802.11a (5.15‐5.3 GHz). This issue has motivated the research and the development of UWB antennas that are capable to deal with interferences in the UWB spectrum 3.1‐10.6 GHz . Recently, plentiful design methods of monopole antennas have been proposed to achieve UWB performance with band notched characteristics .…”