A Wideband Rectangular Patch Microstrip Antenna using Quad-Slotted Ground Plane

Abstract

This research proposes the use of a quad-slotted ground plane in enhancing the bandwidth of rectangular patch microstrip antenna. A feeding line is used for exciting the antenna patch. On the ground plane, there are 4 slots which are designed in a rectangular form with the same dimension. Each slot has a height of 22.5 mm and a width of 15.4 mm. The antenna is designed on FR4 epoxy which has a dielectric constant of 4.4 and a thickness of 1.67 mm. The result shows that the return loss of -14.51 dB in the operating frequency of 1,810 MHz in the LTE Band 3 Frequency, VSWR is 2.19 and the gain is 3.2 dBi. The achieved bandwidth of 200 MHz can cover the frequency range of the LTE Band 3.

On the Design and Performance Analysis of Flexible Planar Monopole Ultra-Wideband Antennas for Wearable Wireless Applications

“…Table 4 compares the proposed work to previously published antenna structures. In comparison to [7,8,13], and [19], the proposed antennas are small in size. When compared to [8,14], they show a wider bandwidth with a simpler design and achieve higher gain and efficiency than .…”

“…In comparison to [7,8,13], and [19], the proposed antennas are small in size. When compared to [8,14], they show a wider bandwidth with a simpler design and achieve higher gain and efficiency than . e main features of the proposed antennas are as follows:…”

“…(i) In comparison to [7,8,20], the proposed antennas maintain the targeted UWB and provide a higher bandwidth percentage (i) In comparison to the reported antennas, the proposed antennas offer peak gains greater than 4 dBi and efficiency greater than 90% (except for a denimbased antenna) (ii) When compared to similar antennas (with nearly the same lower cutoff frequency/broadband nature) [7][8][9][10][11][12][13][14]20], and [24], the proposed antennas show less SAR of 0.16 W/Kg (iv) e antenna prototypes exhibit less than 0.5 ns group delay variation over the operating band than [9], indicating that the proposed antennas have low phase distortion (v) e time domain analysis (transmission characteristics-to understand the pulse handling capability) and RSS measurements are also presented to validate the attenuation characteristics of the designed antennas, which were not reported in [7][8][9][10][11][12][13][14]20], and [24] e polyester substrate antenna outperforms the designed antennas. However, each substrate is intended to be used for a specific application.…”

“…Hence, the antennas must exhibit better radiation characteristics even under stretch/bent conditions when a human adopts different body postures. Several flexible wearable antennas have recently been reported for the ISM band [4][5][6][7][8][9]. In [4], a planar inverted-F antenna (PIFA) with an operating range of 4.96-5.9 GHz was reported for WBAN applications.…”

“…e antennas reported in [6,7] were designed on the FR-4 substrate and operated between 2.3 GHz and 2.6 GHz to support ISM and Bluetooth services for smartwatch applications, respectively. In [8], the radiating element is placed above the FR-4 substrate to function at 1.8 GHz for wearable applications. In [9], a patch antenna with an artificial magnetic conductor (AMC) was designed to increase gain at 2.4 GHz.…”