Gain Enhancement of Cross Shaped Patch Antenna for Ieee 802.11AX Wi-Fi Applications

Self Cite

In this paper, a compact modified hexagonal spiral resonator-based tri-band patch antenna with an octagonal slot is presented for Wi-Fi/WLAN applications. The proposed antenna is designed on a low-cost FR4 substrate with a dielectric constant of ε r = 4.4 and a loss tangent of δ = 0.02. The tri-band operations have been achieved by a Modified Hexagonal Complementary Spiral Resonator (MHCSR) and an Octagonal slot. The loading of the MHCSR at the bottom of the substrate is to cover the 900 MHz (IEEE 802.11ah) band, and an Octagonal slot on top of the 5 GHz (IEEE 802.11a/h/j/n/ac/ax) rectangle patch is to cover the 2.4 GHz (IEEE 802.11b/g/n/ax) band. The prototype of the proposed antenna is fabricated and tested to validate the simulation results. The measured impedance bandwidth is 105 MHz at 900 MHz, 160 MHz at 2.4 GHz, and 180 MHz at 5 GHz. The designed antenna has a compact size with overall dimensions of 0.054λ 0 × 0.066λ 0 × 0.0048λ 0 (18 × 22 × 1.6 mm 3). The 82.2% reduction in size has been accomplished as compared to a conventional patch antenna at 900 MHz (lower resonance frequency). The waveguide setup method has been used to validate a negative permittivity property of the MHCSR. The parametric analysis of the proposed antenna has been carried out using the Ansoft HFSS19 software.

Section: Resultsmentioning

confidence: 99%

“…In [13], a complicated cross-shaped patch antenna with a hexagonal CSRR array was proposed only to cover Wi-Fi applications. In [14], a complementary folded triangle split-ring resonator loaded dualband patch antenna was designed for GSM1800 and Wi-Fi (IEEE 802.11 ax) applications.…”

Section: Introductionmentioning

confidence: 99%

Compact Modified Hexagonal Spiral Resonator Based Tri-Band Patch Antenna With Octagonal Slot for Wi-Fi/Wlan Applications

Gunavathi¹

2020

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“…The proposed antenna is compared with existing antennas and summarized in Table 3, which shows that the proposed antenna is miniaturized with three operating bands and provides the highest gain at 5 GHz [4,8,10,11,13].…”

Section: Resultsmentioning

confidence: 99%

“…The electrically small planar antenna is proposed to cover either WLAN or Wi-Fi applications with low gain [11,12]. In [13], a complicated cross-shaped patch antenna with hexagonal CSRR array is proposed only to cover Wi-Fi applications. A CPW-fed planar antenna is designed to cover only single band Wi-Fi applications [14,15].…”

Section: Introductionmentioning

confidence: 99%

Compact Complementary Folded Triangle Split Ring Resonator Triband Mobile Handset Planar Antenna for Voice and Wi-Fi Applications

Rajalakshmi¹,

Gunavathi²

2019

Self Cite

In this work, a Complementary Folded Triangle Split Ring Resonator (CFTSRR) loaded triband mobile handset planar antenna is presented. The proposed antenna consists of a dumbbellshaped radiating element and two CFTSRR metamaterial unit cells. The dumbbell-shaped radiating element resonates at 5 GHz. The presence of CFTSRRs additionally offers two lower band resonance. The CFTSRR-1 and CFTSRR-2 exhibit negative permittivity at 1.8 GHz and 2.4 GHz, respectively. The proposed antenna is designed to resonate at 1.8 GHz (GSM1800 MHz), 2.4 GHz, and 5 GHz (IEEE802.11ax) for voice and Wi-Fi applications of the mobile handset, respectively. The proposed antenna demonstrates compactness up to 88.6% at 1.8 GHz. The parametric studies are investigated to optimize the antenna in desired frequency bands by using Ansys HFSS19 software. The simulated and measured results are discussed. The measured result shows −10 dB reflection coefficient

“…Microstrip antennas have certain restrictions like polarization problems, low gain, single operating frequency, low impedance bandwidth, and narrow bandwidth [2]. There are some techniques which have improved the performance capabilities of antenna parameters, which are fractal geometry [3], metamaterial [4][5][6][7], array configuration [8], Electromagnetic Band Gap structures (EBGs) [9], Substrate Integrated Waveguides (SIWs) [10], Defected Ground Structures (DGSs) [11,12], different feeding techniques [13], multilayer antennas [14], Defected Microstrip Structures (DMSs) [15], Frequency Selective Surfaces (FSSs) [16], W shape slots, M-slots, and eight shape with proper location in a patch [17][18][19], and distinctive shapes or a combination of them are inserted as slits and notches on the surface of the patch to enhance the performance of a antenna [20]. The equivalent circuit of a DGS is composed of a tuned parallel LC resonating circuit which is series with a microstrip line.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized and Gain Enhancement of Tapered Patch Antenna Using Defected Ground Structure and Metamaterial Superstrate for GPS Applications

Suvarna¹,

Ramamurthy²,

Vardhan³

2021

The main intention to present this work is to miniaturize and gain enhancement of a tapered microstrip patch antenna, which resonates for Global Positioning System (GPS) of L1 band at 1.575 GHz. To accomplish this, we present a new design configuration of a Tap-Shaped Defected Ground Structure (TSDGS). It has been utilized to switch the resonant frequency from 14.5 GHz to 1.575 GHz with no adjustment of areas of the actual Tapered Microstrip Patch Antenna (TMPA). The prototype antenna is fabricated on a Roger RT Duroid substrate merely 58 × 22 mm 2. Conclusively, a miniaturization allowed up to 89.31%, with regard to the TMPA, is excellently accomplished. The gain of the proposed antenna is successfully enhanced with properly locating the metamaterial superstrate onto the basic patch antenna. A gain of 7 dBi improvement has been achieved. The proposed design process is done with two different solvers, ADS and HFSS.