High gain and wideband circularly polarized S‐shaped patch antenna with reactive impedance surface and frequency‐selective surface configuration for Wi‐Fi and Wi‐Max applications

This paper proposes a compact microstrip patch antenna for operating in 2.4 GHz ISM and 3.5 GHz WiMAX bands with circularly polarized (CP) radiation. The CP radiation in dual-bands is a result of two multilayered truncated corner stacked square patches, while the reactive impedance surface (RIS) is used for antenna size miniaturization for the lower operating frequency band. Since the overall lateral antenna dimensions are controlled by the lower frequency band (higher wavelength), reducing the electrical size of the antenna for lower band results in overall smaller antenna dimensions. The measured 3-dB axial ratio bandwidths of the in-house fabricated antenna prototype are 6.1% (2.40–2.55 GHz) for the lower band and 5.7% (3.40–3.60 GHz) for the upper band, while the 10-dBS11bandwidths for the two bands are 8.1% (2.39–2.59 GHz) and 6.9% (3.38–3.62 GHz), respectively. The maximum gain at boresight for the lower band is 2.93 dBic at 2.5 GHz, while the gain for the upper band is 6.26 dBic at 3.52 GHz. The overall volume of the proposed antenna is 0.292λo × 0.292λo × 0.044λo, whereλois the corresponding free-space wavelength at 2.5 GHz.

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Broadband Circularly Polarized H-Shaped Patch Antenna Using Reactive Impedance Surface

IEEE Antennas and Wireless Propagation Letters ◽

10.1109/lawp.2018.2806993 ◽

2018 ◽

Vol 17 (4) ◽

pp. 625-628 ◽

Cited By ~ 19

Author(s):

Joysmita Chatterjee ◽

Akhilesh Mohan ◽

Vivek Dixit

Keyword(s):

Patch Antenna ◽

Impédance Surface ◽

Impedance Surface ◽

Circularly Polarized

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A Compact High Gain Printed Antenna with Frequency Selective Surface for 5G Wideband Applications

Advanced Electromagnetics ◽

10.7716/aem.v10i2.1687 ◽

2021 ◽

Vol 10 (2) ◽

pp. 27-38

Author(s):

A. Kapoor ◽

R. Mishra ◽

P. Kumar

Keyword(s):

Patch Antenna ◽

Frequency Selective Surface ◽

High Gain ◽

Wireless Networking ◽

Good Choice ◽

Printed Antenna ◽

Measuring Setup ◽

Band Pass ◽

Simulation Results ◽

Frequency Selective

In this article, a frequency selective surface (FSS) based compact wideband printed antenna radiator with improved gain and directivity is proposed for sub-6 GHz 5G wireless networking applications. Due to their inherent property of possessing spatial filtering characteristics, FSSs are attracting the interest of researchers. An approach for increasing the gain and the directivity by integrating a band pass FSS on a compact built patch antenna radiator is proposed here. The architecture equations for designing the band pass FSS using double square loop geometry are defined. The printed patch antenna radiator (PAR) and a double square loop frequency selective surface (DSLFSS) are designed and integrated. The simulation results are verified using the results from the measuring setup. The output response is giving a fractional bandwith of 19.14% with 5.5 dBi gain and 6.2 dBi of directivity and thus makes it the good choice for 5G applications.

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