Tapered Slot Antenna With Band-Notched Function for Ultrawideband Radios

Abstract

A novel tapered slot antenna (TSA) with a band-notched function for ultrawideband (UWB) radios is proposed in this letter. By inserting an Archimedean spiral-shaped slot into a microstrip open-circuit circular stub of microstrip-slotline transition, a UWB operation with a notched frequency band can be obtained. Measured data for the optimized case show the bandwidth for the to be 8.8 GHz (from 2.4 to 11.2 GHz) with a notched band frequency from 4.6 to 6.2 GHz. By inserting the resonance slot on the nonradiating part of the antenna, the proposed antenna is capable of avoiding the spatial-dependent bandstop characteristics. Also, the designed antenna has a small size of 50 50 mm , which is a size reduction of 40% with respect to previous similar antennas.Index Terms-Band-notch function, half-wavelength slot, tapered slot antenna (TSA), ultrawideband (UWB) antenna.

Comparative Analysis on Antenna Balun and Feeding Techniques of Step Constant Tapered Slot Antenna

“…Tapered Slot Antennas are a traveling-wave antenna, whose voltage or current distribution can be represented by one or more traveling waves. TSAs contain high directivity and narrow beam width because of the traveling wave properties [31] [32] [33]. Additionally, it has almost symmetric E-plane and H-plane radiation patterns over a wide frequency band as long as antenna parameters like shape, total length, dielectric thickness, and dielectric constant are selected appropriately.…”

Design and Implementation of Step-Constant Tapered Slot Antennas for UWB Application

“…In recent time, various types of antennas have been manifested in the applications of ultra-wideband. Among them tapered slot antenna (TSA) is an important one [18] [19]. A typical tapered slot antenna provides wide operational bandwidth, improves gain, and identical radiation pattern [20].…”

A Planar UWB Antenna with Switchable Single/Double Band-Rejection Characteristics

“…Therefore, UWB antennas with band-notched characteristics to filter this potential interference are desirable. Recently, the various techniques have been applied to design UWB antennas with band-notch characteristics [3][4][5][6][7][8][9][10][11]. These include embedment of different slots on the ground plane or on the radiating patch, use of parasitic elements patches, etching of split-ring resonators, use of tuning stubs, meandering of ground plane and so on [3][4][5].…”

“…These include embedment of different slots on the ground plane or on the radiating patch, use of parasitic elements patches, etching of split-ring resonators, use of tuning stubs, meandering of ground plane and so on [3][4][5]. For example, UWB slot antennas with reconfigurable bandnotch characteristics are proposed in [6], [7]. Also in [8], [9], notch functions are done by the parasitic patches.…”

“…The third switch is embedded among the square ring shaped-slot to filter the X-band. In comparison with the presented antennas in [3][4][5][6][7][8][9][10][11][12][13][14], the proposed antenna is compact and uses varied and simple methods to generate single or double notch bands.…”