A design for suspended patch antenna with switchable polarization

Yan Ming Lin, Jhe Sheng Yang, Jeen-Sheen Row

Research output: Contribution to journalArticle

Abstract

A design for polarization reconfigurable patch antennas is presented. The antenna has a suspended radiating patch embedded with a cross slot. Two feed mechanisms are used to excite the patch antenna, including top-loaded coaxial cable and microstrip-to-slotline balun. To realize polarization reconfigurability, the lengths of the two linear slots of the cross slot are controlled with PIN diodes. When the slot lengths are the same, the antenna fed with the balun can generate a linearly polarized unidirectional radiation. On the other hand, as the slot lengths are different, the antenna fed with the top-loaded coaxial cable produces a circularly polarized broadside radiation, and the polarization sense can be switched between right-handed circular polarization and left-handed circular polarization. A prototype is constructed. Experimental results show that the operating bandwidth of the reconfigurable antenna is about 7%; in addition, good impedance matching as well as low cross polarization are obtained within the bandwidth.

Original languageEnglish
Pages (from-to)1333-1337
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume58
Issue number6
DOIs
Publication statusPublished - 2016 Jun 1

Fingerprint

patch antennas
Microstrip antennas
slots
Antenna feeders
Polarization
Antennas
Coaxial cables
Circular polarization
polarization
antenna feeds
coaxial cables
polarized radiation
circular polarization
Bandwidth
Radiation
antennas
bandwidth
impedance matching
cross polarization
Diodes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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title = "A design for suspended patch antenna with switchable polarization",
abstract = "A design for polarization reconfigurable patch antennas is presented. The antenna has a suspended radiating patch embedded with a cross slot. Two feed mechanisms are used to excite the patch antenna, including top-loaded coaxial cable and microstrip-to-slotline balun. To realize polarization reconfigurability, the lengths of the two linear slots of the cross slot are controlled with PIN diodes. When the slot lengths are the same, the antenna fed with the balun can generate a linearly polarized unidirectional radiation. On the other hand, as the slot lengths are different, the antenna fed with the top-loaded coaxial cable produces a circularly polarized broadside radiation, and the polarization sense can be switched between right-handed circular polarization and left-handed circular polarization. A prototype is constructed. Experimental results show that the operating bandwidth of the reconfigurable antenna is about 7{\%}; in addition, good impedance matching as well as low cross polarization are obtained within the bandwidth.",
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A design for suspended patch antenna with switchable polarization. / Lin, Yan Ming; Yang, Jhe Sheng; Row, Jeen-Sheen.

In: Microwave and Optical Technology Letters, Vol. 58, No. 6, 01.06.2016, p. 1333-1337.

Research output: Contribution to journalArticle

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