Dual-feed dual-polarized patch antenna with low cross polarization and high isolation

Chow Yen Desmond Sim, Chun Chuan Chang, Jeen Sheen Row

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

In this communication, a dual-feed dual-polarized microstrip antenna with low cross polarization and high isolation is experimentally studied. Two different feed mechanisms are designed to excite a dual orthogonal linearly polarized mode from a single radiating patch. One of the two modes is excited by an aperture-coupled feed, which comprises a compact resonant annular-ring slot and a T-shaped microstrip feedline; while the other is excited by a pair of meandering strips with a 180° phase differences. Both linearly polarized modes are designed to operate at 2400-MHz frequency band, and from the measured results, it is found that the isolation between the two feeding ports is less than 40 dB across a 10-dB input-impedance bandwidth of 14%. In addition, low cross polarization is observed from the radiation patterns of the two modes, especially at the broadside direction. Simulation analyses are also carried out to support the measured results.

Original languageEnglish
Article number5196750
Pages (from-to)3405-3409
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Volume57
Issue number10 PART 2
DOIs
Publication statusPublished - 2009 Dec 1

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patch antennas
cross polarization
Antenna feeders
Microstrip antennas
isolation
Polarization
Frequency bands
Bandwidth
microstrip antennas
Communication
slots
strip
apertures
communication
impedance
bandwidth
rings
radiation
simulation

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

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abstract = "In this communication, a dual-feed dual-polarized microstrip antenna with low cross polarization and high isolation is experimentally studied. Two different feed mechanisms are designed to excite a dual orthogonal linearly polarized mode from a single radiating patch. One of the two modes is excited by an aperture-coupled feed, which comprises a compact resonant annular-ring slot and a T-shaped microstrip feedline; while the other is excited by a pair of meandering strips with a 180° phase differences. Both linearly polarized modes are designed to operate at 2400-MHz frequency band, and from the measured results, it is found that the isolation between the two feeding ports is less than 40 dB across a 10-dB input-impedance bandwidth of 14{\%}. In addition, low cross polarization is observed from the radiation patterns of the two modes, especially at the broadside direction. Simulation analyses are also carried out to support the measured results.",
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Dual-feed dual-polarized patch antenna with low cross polarization and high isolation. / Sim, Chow Yen Desmond; Chang, Chun Chuan; Row, Jeen Sheen.

In: IEEE Transactions on Antennas and Propagation, Vol. 57, No. 10 PART 2, 5196750, 01.12.2009, p. 3405-3409.

Research output: Contribution to journalArticle

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