Extremely wideband printed monopole antenna with dual rejection bands

Abstract

An extremely wideband (EWB) microstrip antenna is presented that is designed with band rejection characteristics at C and WLAN bands. This is achieved by embedding inside the inverted triangular shaped patch a pair of L-shaped slits that have been rotated by 6908 so that they are horizontal and downward facing, and topping the patch with an arrow-shaped strip. The feedline to the patch also needs to be backed with a trapezoid shaped ground-plane. The center frequency of the notched bands can be easily controlled by altering the parameters of the slits and arrow-shaped strip. The low-profile antenna essentially radiates omni-directionally and has a measured impedance bandwidth of 18.9 GHz (2.9-21.8 GHz) with a VSWR 2, except at the two rejection bands. The antenna has an average gain > 3 dBi. V C 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:908-911, 2016; View this article online at wileyonlinelibrary.com.

Triple-Notched Band CPW fed UWB Antenna with Metallic Reflector for High Gain Performance

“…The disruptions of these high power communication systems with UWB communication systems can evade by applying the band rejection filter [3]. Many UWB antennas with band-notched characteristics proposed in the literature [4][5][6][7][8][9][10][11][12][13]. Zarrabi [4] reported a triple notch band UWB antenna that had a fractal Koch structure with a T-shaped stub.…”

“…To incur band rejection characteristics, a square ring short stub loaded resonator embedded. Amiri [9] investigated an inverted triangle-shaped patch with the trapezoid shaped ground plane for extreme wide band operation. The dual rejection characteristic for C and WLAN bands obtained through embedding a pair of L-shaped slots in radiating structure.…”