Miniaturized Circularly Polarized Square Slot Antenna with Enhanced Axial-Ratio Bandwidth Using an Antipodal Y-strip

Mehrdad Nosrati; Negar Tavassolian

doi:10.1109/LAWP.2016.2605099

Miniaturized Circularly Polarized Square Slot Antenna with Enhanced Axial-Ratio Bandwidth Using an Antipodal Y-strip

Mehrdad Nosrati
, Negar Tavassolian

Department of Electrical and Computer Engineering

Stevens Institute of Technology

Research output: Contribution to journal › Article › peer-review

101 Scopus citations

Abstract

A novel single-fed, wideband, circularly polarized slot antenna is proposed and fabricated. Wideband circular polarization is obtained by introducing an antipodal Y-strip to a square slot antenna. The feedline is a U-shaped microstrip line that provides a wide impedance bandwidth. The overall size of the antenna is only 28 × 28 mm² (0.3 λ_o × 0.3 λ_o). A prototype of the antenna is fabricated and tested. The measured bandwidths for the axial ratio (AR <; 3 dB) and relative impedance (|S₁₁ | <;-10 dB) are 41.3% (from 4.4 to 6.67 GHz) and 84% (from 3.25 to 8 GHz), respectively, and the antenna has a stable radiation pattern and a gain of greater than 3 dBi over the entire circular polarization frequency band.

Original language	English
Pages (from-to)	817-820
Number of pages	4
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	16
DOIs	https://doi.org/10.1109/LAWP.2016.2605099
State	Published - 2017

Keywords

Antipodal Y-strip
circular polarization
slot antennas
wideband antennas

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10.1109/LAWP.2016.2605099

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title = "Miniaturized Circularly Polarized Square Slot Antenna with Enhanced Axial-Ratio Bandwidth Using an Antipodal Y-strip",

abstract = "A novel single-fed, wideband, circularly polarized slot antenna is proposed and fabricated. Wideband circular polarization is obtained by introducing an antipodal Y-strip to a square slot antenna. The feedline is a U-shaped microstrip line that provides a wide impedance bandwidth. The overall size of the antenna is only 28 × 28 mm2 (0.3 λo × 0.3 λo). A prototype of the antenna is fabricated and tested. The measured bandwidths for the axial ratio (AR <; 3 dB) and relative impedance (|S11 | <;-10 dB) are 41.3\% (from 4.4 to 6.67 GHz) and 84\% (from 3.25 to 8 GHz), respectively, and the antenna has a stable radiation pattern and a gain of greater than 3 dBi over the entire circular polarization frequency band.",

keywords = "Antipodal Y-strip, circular polarization, slot antennas, wideband antennas",

author = "Mehrdad Nosrati and Negar Tavassolian",

note = "Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

year = "2017",

doi = "10.1109/LAWP.2016.2605099",

language = "English",

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T1 - Miniaturized Circularly Polarized Square Slot Antenna with Enhanced Axial-Ratio Bandwidth Using an Antipodal Y-strip

AU - Nosrati, Mehrdad

AU - Tavassolian, Negar

PY - 2017

Y1 - 2017

N2 - A novel single-fed, wideband, circularly polarized slot antenna is proposed and fabricated. Wideband circular polarization is obtained by introducing an antipodal Y-strip to a square slot antenna. The feedline is a U-shaped microstrip line that provides a wide impedance bandwidth. The overall size of the antenna is only 28 × 28 mm2 (0.3 λo × 0.3 λo). A prototype of the antenna is fabricated and tested. The measured bandwidths for the axial ratio (AR <; 3 dB) and relative impedance (|S11 | <;-10 dB) are 41.3% (from 4.4 to 6.67 GHz) and 84% (from 3.25 to 8 GHz), respectively, and the antenna has a stable radiation pattern and a gain of greater than 3 dBi over the entire circular polarization frequency band.

AB - A novel single-fed, wideband, circularly polarized slot antenna is proposed and fabricated. Wideband circular polarization is obtained by introducing an antipodal Y-strip to a square slot antenna. The feedline is a U-shaped microstrip line that provides a wide impedance bandwidth. The overall size of the antenna is only 28 × 28 mm2 (0.3 λo × 0.3 λo). A prototype of the antenna is fabricated and tested. The measured bandwidths for the axial ratio (AR <; 3 dB) and relative impedance (|S11 | <;-10 dB) are 41.3% (from 4.4 to 6.67 GHz) and 84% (from 3.25 to 8 GHz), respectively, and the antenna has a stable radiation pattern and a gain of greater than 3 dBi over the entire circular polarization frequency band.

KW - Antipodal Y-strip

KW - circular polarization

KW - slot antennas

KW - wideband antennas

UR - https://www.scopus.com/pages/publications/85027497334

UR - https://www.scopus.com/pages/publications/85027497334#tab=citedBy

U2 - 10.1109/LAWP.2016.2605099

DO - 10.1109/LAWP.2016.2605099

M3 - Article

AN - SCOPUS:85027497334

SN - 1536-1225

VL - 16

SP - 817

EP - 820

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

ER -

Miniaturized Circularly Polarized Square Slot Antenna with Enhanced Axial-Ratio Bandwidth Using an Antipodal Y-strip

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Keywords

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