Super wideband antenna with single band suppression

Abstract

In this paper, a band-notched compact printed monopole super wideband (SWB) antenna has been designed and fabricated. The SWB antenna composed of a radiating patch with a 50 Ω triangular tapered feed line which is connected through a feed region, and a chamfered ground plane (CGP), that covers the frequency band from 0.9–100 GHz (ratio bandwidth of 111.1:1) with a reflection coefficient |S11| < −10 dB, except in the notched band of 4.7–6 GHz for Wireless local area network IEEE 802.11a and HIPERLAN/2 WLAN band. To realize the band notch characteristics a C-shape parasitic element is employed near the CGP etched with two symmetrical L-slots and placed under the radiating patch. Proposed antenna structure occupies a relatively small space (30 × 40 × 0.787 mm3) and achieved much wider impedance bandwidth as well as higher gain compared with the existing ultra wideband and SWB antennas.

Modified star‐star fractal (MSSF) super‐wideband antenna

“…In the available literature, some researchers have used FR‐4 epoxy as the antenna substrate to reduce the antenna cost and some have used different substrates due to lossy characteristics of FR‐4 at millimeter frequencies .…”

“…The exponential developments in the integrated technology have reduced the dimensions of the modern communication devices. Printed SWB antenna structures reported in the literature include mostly monopole and fractal geometries.…”

Staircase Fractal Loaded Microstrip Patch Antenna for Super Wide Band Operation

“…Therefore, reduced value of reflection coefficient An equivalent circuit model of the proposed SWB antenna is presented in Figure 9. In this model the reflection coefficient characteristics can be achieved due to several resonances of the proposed antenna structure where each resonance is modelled as a parallel RLC circuit [9]. The reflection coefficient plot of the proposed antenna design shows twelve prominent resonant frequencies as obtained from HFSS simulation.…”

“…A semi-circular shaped and a tapered shaped SWB patch antennas have been reported in [7] and [8] respectively where a tapered feed line is used for bandwidth enhancement. Similarly in [9], a tapered line fed tapered shaped patch antenna with chamfered ground plane has been presented which shows an impedance bandwidth ratio of 111.1 : 1. In [10] reactive loading technique has been applied on a patch antenna to achieve required bandwidth for SWB operation.…”

“…Super wideband (SWB) antennas are the antennas which support more than decade bandwidth (10 : 1 or more) at S 11 ≤ −10 dB [1]. Different techniques have been utilized in designing these types of planar, low profile compact antennas which can support SWB operation [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”