Printed Microstrip-Line-Fed Elliptical Slot Antenna with Very Wide Bandwidth

Abstract

A novel microstrip-line-fed elliptical slot antenna is proposed in this paper. The proposed prototype consists of an elliptical radiating element and ground plane with elliptical slot in a two-side conductor-coated substrate. From experiment results, the measured impedance bandwidth defined by VSWR < 2.5, is from 1.60 GHz to 25 GHz and even higher frequency, i.e., a ratio of about 15.6:1. Furthermore, good radiation patterns covering the operating band have been observed.

Compact dual‐band‐notched CPW‐fed wide‐slot antenna for WLAN and WiMAX applications

“…Recently, slot antennas played an important role in wireless technology, because the slot antennas had the advantages of low cost, light weight, easy realization, less conductor loss, and better isolation between the radiating element and feeding network. In the past, the designs of related dual‐, multi, and wideband wide‐slot antennas had been presented using the structures of stripline [1], pattern‐frequency‐dependent [2], asymmetrical CPW grounds [3], elliptical slot [4], Koch fractal slot [5], T‐shaped slot [6], and triangular slot [7]. Owing to the designed broadband (2–6 GHz) wide‐slot antenna, there exist some narrow bands used by WiMAX system operating in the 2.15–2.69/3.4–4.2/4.9–5.85 GHz bands and WLAN in the 2.4–2.484/5.15–5.825 GHz bands.…”

A Semi-Circle-Shaped Aperture UWB Antenna With Triple Band-Notched Character

“…Thus, antenna-filtering technique may be one of the simplest, effective and inexpensive methods, and compact UWB antennas with band-notched characteristics to avoid the potential interference are desirable [5][6][7]. As a kind of compact omnidirectional, integrated UWB antenna, various printed wide slot antennas with different performance and structures have been developed [8][9][10]. In order to design slot antennas with band-notched function, one simple and effective way is to incorporate slots (known as half-wave resonant structures) in the antenna's tuning stub, such as U-shaped slot [11], H-shaped slot [12], C-shaped slot [13], etc..…”

A Novel Compact Ultra-Wideband (Uwb) Wide Slot Antenna With via Holes

“…Because of its attractive features such as wide bandwidth performance, easy fabrication and bidirectional radiation patterns, the wide slot antenna has become one of the most promising candidates for UWB antennas design [2][3][4][5][6][7][8][9][10][11]. Previously in [2], a rectangular wide slot with cross-shaped microstrip-line-fed structure achieves an impedance bandwidth of 98.6% with |S 11 | ≤ −10 dB.…”

“…In [5], a semicircular slot with a squarepatch feed and a triangular slot with a triangular-patch feed provide bandwidth of 120.0% and 110.0% respectively. Some other types of the microstrip wide slot antennas have been reported in [6][7][8][9][10][11].…”