Compact design of trapezoid shape monopole antenna for SWB application

Abstract

In this article, a compact design of the monopole antenna is proposed for the super‐wideband application (SWB). The extremely wide frequency bandwidth is achieved by deploying a topology based on trapezoid shape radiator, triangular tapered feed line, and semicircular ground. The antenna shows resonance from 1.42 GHz to more than 90 GHz with a bandwidth ratio of 63.30:1, VSWR ≤2 and with S11 ≤ −10 dB. The electrical dimension of the monopole antenna is 0.16λc × 0.27λc where the wavelength λc is with respect to the lowest cut‐off frequency. The designed monopole antenna is fabricated on the F4B substrate. The prototype is experimentally validated for ultrawideband and SWB application. The experimental and simulated results are in good agreement and the designed antenna shows better performance of a wideband operation, compact electrical dimension, and high bandwidth dimension ratio over existing reported structures. The proposed antenna can be used for multiple bands such are ISM, Wi‐Fi, WLAN, WiMAX, C, S, X, K, and Ku bands.

Design of SWB MIMO Antenna with Extremely Wideband Isolation

“…The bandwidth (BW) ratio of SWB antennas is greater than 10:1. Multiple wideband antennas have been designed for UWB [1][2][3][4][5] and SWB [6][7][8][9][10][11][12][13][14][15] applications. The large dimensions/size of such wideband antennas is a major challenge.…”

“…Similarly in [3], a coplanar waveguide (CPW)-fed antenna has been designed for UWB applications with dimensions of 0.43λ × 0.84λ mm 2 . Mostly the previously designed [1][2][3][4][5][6][7][8] wideband antennas have large dimensions, low % BW, and high lowest resonance frequency. For example, the dimensions of the SWB antenna designed in [6] is 2.0λ × 2.0λ mm 2 , with a 5:1 BW ratio and a %BW of 164%.…”

“…On the other hand, UWB/SWB is another technology that can provide massive data transmission rates by utilizing a very wide frequency band. Extensive research has been conducted in UWB and SWB antennas [1][2][3][4][5][6][7][8]. More advanced technology needs to be used when the required data rate reaches 1 Gigabyte per second.…”

Staircase Fractal Loaded Microstrip Patch Antenna for Super Wide Band 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].…”

“…A crescent shaped microstrip patch antenna with a partial ground plane has been proposed in [13] which shows an impedance bandwidth ratio of 11.6 : 1. In [14] a tapered triangular microstrip line fed trapezoidal patch antenna with semicircular ground plane has been reported for SWB operation.…”