A compact microstrip feedline printed antenna with perturbed partial ground plane for UWB applications

Abstract

This article presents a simple compact microstrip feedline printed antenna that can minimize the consequences of frequency interference, thereby, providing good stable omnidirectional radiation pattern and transmission response within whole range of desired frequencies. The proposed antenna has two regular shaped hexagonal radiators, a mictrostrip-fed line and a partially extended ground plane perturbed by a circular slot inserted at the centre. The partial ground plane with a circular slot at the center plays an important role in the broad band characteristics of the proposed antenna, because they can adjust the electromagnetic coupling effect between patch and ground plane and improve the impedance bandwidth. The simulation and measured results are in close agreement and show that a wide bandwidth of 10.39 GHz (2.52-12.91 GHz) at À10 dBi return loss with voltage standing wave ratio less than two is achieved by this antenna. The antenna is compact (0.37λ Â 0.24λ), has good radiation pattern, appreciable gain of 5.97 dBi and 134% fraction bandwidth which is favorable for ultra-wide band applications such as S, C, X, WLAN, and WiMAX. The equivalent lumped circuit model of the proposed antenna is also presented for validation purpose. The proposed antenna in particular focusses on 3.4 to 3.6 GHz frequency band with centre frequency 3.5 GHz (sub 6 GHz 5G band) and WLAN/Wi-Fi (3.6/4.9/5.9 GHz) applications.

On the design and analysis of a miniaturized ultra‐wideband (UWB) antenna using quatrefoil‐shaped nonuniform meta‐surfaces for body‐centric communications

“…Also, except De et al, 7 the proposed antenna offers higher bandwidth than all the antennas given in the table and higher bandwidth with dual mode operation than the previous studies 5,29,40,50 . The proposed antenna also provides better gain than previous literature 5,7–9,11–13,17,18,34,38,46,50 . Better efficiency is also achieved when compared to other studies 5,7,12,18,38,40,46 .…”

“…It is understood from Table 5 that the proposed antenna is smaller in size (length  width) than the antennas in literature 7,8,12,13,18,29,40,50 and lesser in thickness than. 5,7,9,11,13,17,18,29,34,38,40 This lesser thickness of the antenna results in reduced overall volume. Also, except De et al, 7 the proposed antenna offers higher bandwidth than all the antennas given in the table and higher bandwidth with dual mode operation than the previous studies.…”

“…It is understood from Table 5 that the proposed antenna is smaller in size (length × width) than the antennas in literature 7,8,12,13,18,29,40,50 and lesser in thickness than 5,7,9,11,13,17,18,29,34,38,40 . This lesser thickness of the antenna results in reduced overall volume.…”

“…An UWB antenna with rectangular patch providing notched bands characteristics is observed in Yadav et al 17 The antenna provides notched bands with lesser UWB bandwidth but good gain. Circuit theory‐based analysis was done for the results in Yadav et al 17 A simple UWB monopole antenna in Kumar et al 18 provides good bandwidth and peak gain. But the antenna's group delay remains high (>0.9 ns).…”

The Development of Broadband Microstrip Patch Antenna for Wireless Applications

“…It has achieved a bandwidth of 80 MHz and a directivity gain of 2.611 dBi [16]. Several methods have been introduced, such as using slits [17], slots [18], DGS (Defected Ground Structure) [19], partial ground plane [20][21], split-ring resonator [22], substrate integrated waveguide (SIW) [23], dielectric rezonator (DRA) [24], using air gap [25], shorting pin [26] and using EBG (Electromagnetic Band Gap) structures [27]. Although there are many studies in the literature to increase the bandwidth, the easiest way to increase the bandwidth is to use slots in the patch plane and make changes in the ground plane [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27].…”