A compact circularly polarized slotted-slit-microstrip patch antenna

Nasimuddin*, Zhi Ning Chen, Xianming Qing

*Corresponding author for this work

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

11 Citations (Scopus)


A compact slotted-slit-microstrip patch antenna is studied for circular polarized (CP) radiation. Two unequal circular-shaped slots along one of the diagonal axes and four slits along the orthogonal axes are cut on the square patch radiator for CP radiation and compact antenna size. The antenna is designed for ultra high frequency (UHF) radio frequency identification (RFID) handheld reader applications. The measured 5.0 MHz bandwidth for 3-dB axial ratio (AR) and 12.0 MHz bandwidth for VSWR of 2.0 are achieved. The overall size of the antenna is 0.273λ 0×0.273λ 0×0.0139λ 0 at 910 MHz.

Original languageEnglish
Title of host publicationProceedings of the Asia-Pacific Microwave Conference 2011 (APMC)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Electronic)9780858259744
Publication statusPublished - 2011
Externally publishedYes
EventAsia-Pacific Microwave Conference, APMC 2011 - Melbourne, VIC, Australia
Duration: 5 Dec 20118 Dec 2011


OtherAsia-Pacific Microwave Conference, APMC 2011
CityMelbourne, VIC


  • Circular polarization
  • microstrip antenna
  • reader antenna
  • RFID
  • slits
  • slotted patch


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