Compact dual-band circularly polarized microstrip antenna with separated transmitting and receiving ports for RFID reader applications

Ting Jui Huang*, Heng-Tung Hsu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

A dual-band (UHF: 900-930 MHz, ISM: 2.35-2.5 GHz for North America Regulations)circularly polarized aperture coupled microstrip RFID reader antenna with separated transmitting (Tx) and receiving (Rx) ports has been designed, fabricated, and measured. The maximum measured LHCP antenna gain is 8.2 dBic at 910 MHz (UHF) and RHCP gain is 8.8 dBic at 2.45 GHz (ISM). The isolations between the two ports are about 10 dB and 33 dB, at 910 MHz and 2.45 GHz, respectively. The measured axial ratios are less than 2dB in the UHF band (870-950 MHz) and 3 dB in the ISM band (2.35-2.5 GHz). The proposed antenna is able to meet all the requirements for RFID reader applications.

Original languageEnglish
Title of host publication2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings
Pages1370-1372
Number of pages3
DOIs
StatePublished - 1 Dec 2012
Event2012 Asia-Pacific Microwave Conference, APMC 2012 - Kaohsiung, Taiwan
Duration: 4 Dec 20127 Dec 2012

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC

Conference

Conference2012 Asia-Pacific Microwave Conference, APMC 2012
CountryTaiwan
CityKaohsiung
Period4/12/127/12/12

Keywords

  • antenna
  • Circular polarization
  • dual-band
  • ISM
  • RFID reader
  • UHF

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