Compact slot antenna for ultra‐wide band applications

Abstract

A novel compact ultra‐wide band antenna with L‐shaped slot is presented. The printed antenna is fed by a microstrip feed line to achieve impedance matching for the SMA connector. The proposed antenna offers 118% bandwidth when printed on a substrate of dielectric constant 4.4 and has an overall dimension of 23.7 × 23.7 × 0.8 mm3. The simulated and measured reflection characteristics of the antenna with the variation of key‐parameters along with radiation patterns of the final antenna are presented and discussed. In addition, by decreasing the dimension of radiating patch, band‐notched properties in the lower wireless local area network (WLAN) (5.15–5.35 GHz) or higher WLAN (5.725–5.825 GHz) bands are achieved. With the compact size and broadband, this antenna is very suitable for using in a trade‐off which has to be taken account for a design of miniaturisation.

Miniaturization and Bandwidth Enhancement of a CPW-Fed Annular Slot Antenna Using Ris

“…To ease the feeding arrangement, a microstrip line feed has been used in [6,7] where, corrugated and folded fin structure was adopted for miniaturization. In [8], an open-ended slot is utilized for size reduction of a UWB antenna while inverted feeding section maintains the impedance bandwidth. Recently, a very small size UWB antenna has been designed by half-cutting method [9].…”

“…Recently, a very small size UWB antenna has been designed by half-cutting method [9]. Amongst the techniques adopted in [6][7][8] for designing of a UWB slot antenna, dimensions of the structure are rarely reduced. A printed wide-slot antenna with enhanced bandwidth has been realized by a microstrip line fed tuning stub [10], CPW-fed asymmetric slot [11], rotated square slot [12] and mono-pole fed structure [13].…”

Dual Band Microstrip Antenna using Shorted Metallic Patches

“…There are many different type of shape of slits or slots are used to generate the dual band functions which have been discussed in [1][2][3][4][5][6][7][8][9][10]. In [1] different shapes of slots such as T-shaped and W-shaped are used to obtain the desired multi band notch Characteristics.…”

“…Wide Band antennas are also for the rejection of the electromagnetic interfaces with other existing communication systems, such as (3.18-3.66) GHz-Wi-MAX, (5.18-6.22) GHz-WLAN, (6.89-9.07) GHz-X bands [6]. Other methods such as inverted F shape type radiating patch with L-shape ground having a square on the upper corner [7] and square patch with L and E shaped slits and ground plane with V-shaped protruded strip [8] are also used to enhance the bandwidth or to get ultrawide bands.…”

Wideband Multi-Polarized Microstrip Patch Antenna for Wireless Communication

“…There are many different type of shape of slits or slots are used to generate the wideband multinotch dual polarization functions which have been discussed in [1][2][3][4][5][6][7][8][9][10]. In [1] different shapes of slots such as T-shaped and W-shaped are used to obtain the desired multi band notch Characteristics.…”