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Title: Miniaturized Circularly Polarized Stacked Patch Antenna on Reactive Impedance Surface for Dual-Band ISM and WiMAX Applications
Authors: Agarwal, K 
Dutta, S
Keywords: Antennas
Circular polarization
Frequency bands
Microstrip antennas
Slot antennas
Antenna dimensions
Axial ratio bandwidth
Circularly polarized
Free-space wavelengths
Micro-strip patch antennas
Operating frequency bands
Reactive-impedance surfaces
Stacked patch antennas
Microwave antennas
Issue Date: 2015
Citation: Agarwal, K, Dutta, S (2015). Miniaturized Circularly Polarized Stacked Patch Antenna on Reactive Impedance Surface for Dual-Band ISM and WiMAX Applications. International Journal of Antennas and Propagation 2015 : 938565. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: 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-dB S11 bandwidths 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, whereλo is the corresponding free-space wavelength at 2.5 GHz. © 2015 Kush Agarwal and Saugata Dutta.
Source Title: International Journal of Antennas and Propagation
ISSN: 16875869
DOI: 10.1155/2015/938565
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications

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