Circularly polarized slotted-ground microstrip antennas for radiofrequency identification readers

Oktavinus Tanawie Randy, Nasimuddin*, Arokiaswami Alphones

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The single-feed, circularly polarized microstrip antennas (CPMAs) based on the slotted-ground plane are investigated for radiofrequency identification readers.The conventional CPMA with truncated corners is also studied to compare with the proposed CPMA's performances. In the proposed designs, four square slots with asymmetrical configuration are etched in the diagonal directions on the ground plane of the antenna to achieve circularly polarized radiation. The proposed CPMAs are designed with low-cost FR4 substrate and RO4003C substrate and their performances are compared. The antenna bandwidth is also studied on thin and thick dielectric substrates.

Original languageEnglish
Pages (from-to)2304-2309
Number of pages6
JournalMicrowave and Optical Technology Letters
Issue number10
Publication statusPublished - Oct 2012
Externally publishedYes


  • circularly polarized
  • microstrip antenna
  • radiofrequency identification readers
  • slotted-ground


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