Design of a symmetric open slot antenna for UWB applications

Abstract

In this paper, an ultra-wideband (UWB) antenna with symmetric open slots is proposed. The symmetric open slots and the U-shaped feeding line are introduced for obtaining the symmetrical radiation property and the lower cross-polarization level. By using the U-shaped feeding line to feed the symmetric open slots in parallel, four resonances are excited by the different effective resonant length of the open slots and form a wideband, which locates at 3.1-10.8 GHz. The measured results show that the stable radiation patterns and the low cross-polarization level are obtained in the operating band, which shows that the proposed antenna is a good candidate for UWB applications.

CPW-Fed Super-Wideband Antenna With Modified Vertical Bow-Tie-Shaped Patch for Wireless Sensor Networks

“…Microstrip line feeding [5, 7, 8, 10-14, 16, 18, 20, 23] and coplanar waveguide (CPW) [4, 6, 9, 15, 17, 19, 21 -22] feeding techniques are also employed to achieve super/ultra/wide operating band. For example, in [5], a symmetric open slot antenna was designed for UWB application. Using the U-shaped feedline, the reported design attained a working band ranging from 3.1-13.2 GHz.…”

“…Using the U-shaped feedline, the reported design attained a working band ranging from 3.1-13.2 GHz. The antenna reported in [5] demonstrates better miniaturization with an overall footprint of 580 mm 2 when compared to the patch antenna with modified partial ground plane [7], a diamond-shaped radiating patch with partial multi-slotted ground plane [8], bird face-shaped patch with a single slotted limited ground plane [10], modified slotted U-shaped antenna [11], hibiscus petal-shaped radiator and small trapezoid ground plane [12], modified annular ring-shaped radiator with rectangular semi ground [13], corner truncated rectangular patch with single slotted ground plane [14], the circular patch with iterations of a hexagonal slot [16], annular ring-shaped radiator with small ground plane [18], circular radiator with hexagonal-square-shaped fractal geometry and partial ground plane [20], and semi-circular radiator with small trapezoid ground plane [23]. However, in microstrip line-fed antennas, the space available on both sides of the substrate is not entirely used resulting in elevated fabrication cost during mass production.…”

A novel design of recta‐tri substrate integrated waveguide antenna for ultra‐wideband applications

“…It covers the frequency range from 3.4 to 8 GHz with a gain of 3.6 dBi. In Zhang et al, 15 a symmetric open slot antenna for UWB applications is presented. The dimension of the antenna is 29 × 20 mm 2 .…”

Design of a Compact Monopole Antenna for UWB Applications

“…In literatures [17][18][19][20][21][22][23][24][25], several antennas have been reported for the UWB applications. Reference [17] reports a bio inspired UWB antenna with an overall size of 314 × 121 mm 2 , comprising a leaf shape geometry and exhibiting a wideband response from 3.4 to 8 GHz having gain of 3.63 dB.…”

“…Similarly, a UWB antenna operating at a wide frequency band of 3.4 to 15 GHz is presented with a total size of 31 × 22 mm 2 [18] with gain variations. Reference [19] presents a symmetric open slot antenna with a total size of 29 × 20 mm 2 for UBW applications, covering a frequency band from 3.1-10.8 GHz. Furthermore, gain is observed varying from 3.9 to 5.7 dB for the desired wideband response.…”