Probe-fed wideband AMC-integrated hexagonal antenna with uniform gain characteristics for WLAN applications

Joshi, Abhishek; Singhal, Rahul

doi:10.1007/s11276-020-02282-7

Cited by 11 publications

(3 citation statements)

References 44 publications

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“…As shown in the reflection coefficients, extra resonances at frequencies higher than the slot antenna"s resonant frequency of 28.3 GHz appear. A similar phenomenon was observed in [37][38][39][40]. Because of the presence of an AMC surface, the effective thickness of the substrate becomes larger, which causes the input reactance to be more capacitive [37].…”

Section: B Antenna Array Designsupporting

confidence: 65%

A Compact Hemispherical Beam-Coverage Phased Array Antenna Unit for 5G mm-Wave Applications

Bang

Choi

2020

IEEE Access

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A compact low-profile phased array antenna unit with unidirectional hemispherical beamcoverage for 5G mm-wave applications is proposed in this paper. A four-subarray configuration is used for the proposed structure to achieve unidirectional hemispherical coverage in the boresight direction normal to the substrate. An artificial magnetic conductor (AMC)-backed slot antenna array with an optimal separation distance of 1.9 mm (= 0.31 λ at 28 GHz) is proposed as a subarray. The proposed antenna has increased Hplane beamwidth with the measured peak gain of 11.62 dBi and provides the desired wide inclined beam pattern in the elevation plane. The proposed antenna also offers steered beams over the range within ±45° in the azimuth plane. The hemispherical-coverage, phased array antenna unit composed of the four designed subarrays has overall dimensions of 80.8 mm × 80.8 mm × 2.4 mm. The coverage efficiencies of the proposed phased array antenna unit are 0.82, 0.71, and 0.61 for threshold gains of 5 dBi, 8 dBi, and 10 dBi, respectively, where the maximum solid angle is 2π steradians.

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Section: B Antenna Array Designsupporting

confidence: 65%

A Compact Hemispherical Beam-Coverage Phased Array Antenna Unit for 5G mm-Wave Applications

Bang

Choi

2020

IEEE Access

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“…Researchers are very interested in wearable antennas because of their potential impact on on-body wireless communications [ 2 ]. Consequently, the growth of Wireless Body Area Networks (WBAN) [ 6 – 9 ] and the need for wearable wireless devices is rising in a variety of fields, such as fitness trackers, healthcare tracking and monitoring systems [ 10 ], and military tracking systems [ 11 ]. The authors researched thoroughly before designing a flexible, small antenna backed by Artificial Magnetic Conductor (AMC) surface that may be utilized in WBAN applications using the newest Wi-Fi frequencies (Wi-Fi 6E).…”

Section: Introductionmentioning

confidence: 99%

A compact triband antenna using artificial magnetic conductor for wireless body area network communicationsFront

Rajavel

Ghoshal

2023

Wireless Netw

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The proliferation of the Internet of Things devices and advancements in wireless communication have fostered the growth of Wireless Body Area Networks (WBAN). This research provides a triband antenna supported by a 4 × 4 Artificial Magnetic Conductor (AMC) array surface that has a low Specific Absorption Rate (SAR), a high Front to Back Ratio (FBR), and increased gain for use in wearable devices. For WBAN communications, the proposed antenna operates in the Industrial, Scientific, and Medical (2.4 GHz) band, the C (3.7–4.2 GHz), and the Wi-Fi 6E (5.925–7.125 GHz) bands. The dual-band AMC unit cell exhibits Double-Negative and angular stability behaviour at 2.45 GHz and 6.5 GHz. AMC-backed antenna achieved multiband functionality by incorporating slots into the unit cell and a defective ground structure into the antenna. The antenna was positioned 0.139λ 0 above the AMC surface, which measured 0.556λ 0 × 0.556λ 0 × 0.013λ 0 (at 2.45 GHz). The antenna exhibited good gain and return loss variations when mounted on curved surfaces. The proposed integrated design yielded substantial enhancements, as evidenced by the increase of 8.2 dBi in maximum gain, 25.2 dB in FBR, and over 93% in total efficiency. The AMC-backed antenna’s − 10 dB impedance bandwidth is 18.4%, 21.2%, and 22.3%, with corresponding frequency ranges of 2.25–2.66 GHz, 3.66–4.53 GHz, and 5.9–7.35 GHz. Additionally, the AMC surface showed an average reduction in SAR of 93.22%. Vector Network Analyzer and Anechoic chamber measurements proved simulation accuracy. As a result, it is strongly recommended that the integrated antenna design be acknowledged in WBAN communications.

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“…A complex 7 × 7 rectangular metasurface structure-based antenna has been designed for bandwidth enhancement [26]. An AMC integrated probe fed hexagonal ring antenna is presented for S-band applications with very low antenna efficiency of 45% [27]. A microstrip-fed hexagonal shape monopole antenna and a circular SRR-based monopole antenna have been designed for UWB band applications [28,29].…”

Section: Introductionmentioning

confidence: 99%

Hexagonal Split Ring Resonator Enclosed Circular Split Ring Resonator Inspired Dual-Band Antenna for Sub-6 GHZ 5g Nr and Ieee 802.11BA/BE Applications

Rajalakshmi¹,

Gunavathi²

2021

PIER C

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In this article, a novel Hexagonal Split-Ring Resonator enclosed Circular Split-Ring Resonator (HSRR-CSRR) inspired printed antenna is presented for sub-6 GHz 5G NR and IEEE 802.11ba/be applications. The proposed antenna comprises an HSRR-CSRR and a D-SHSRR metamaterial unit cell with a partial ground plane. The designed antenna is printed on a low-cost FR-4 substrate with dielectric constant ε r of 4.4, thickness of 1.6 mm, and loss tangent of 0.02. An HSRR-CSRR metamaterial structure is designed to get the three distinct resonance frequencies at 3.5 GHz, 5.05 GHz, and 6.2 GHz, respectively. To cover the entire band of Sub-6 GHz 5G NR (5-6 GHz), a Double-slit Single Hexagonal Split Ring Resonator (D-SHSRR) is designed for 5.8 GHz and loaded along with the HSRR-CSRR. The operating principle, equivalent circuit, and parametric extraction of the HSRR-CSRR structure are examined. Compared to the conventional antenna, the proposed antenna has a compact size of 0.38λ g × 0.52λ g × 0.03λ g . The antenna parameters have been investigated using Ansys HFSS 15.0 software. The measured and simulated results are in good agreement.

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Probe-fed wideband AMC-integrated hexagonal antenna with uniform gain characteristics for WLAN applications

Cited by 11 publications

References 44 publications

A Compact Hemispherical Beam-Coverage Phased Array Antenna Unit for 5G mm-Wave Applications

A Compact Hemispherical Beam-Coverage Phased Array Antenna Unit for 5G mm-Wave Applications

A compact triband antenna using artificial magnetic conductor for wireless body area network communicationsFront

Hexagonal Split Ring Resonator Enclosed Circular Split Ring Resonator Inspired Dual-Band Antenna for Sub-6 GHZ 5g Nr and Ieee 802.11BA/BE Applications

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