Omni-directional circularly polarized microstrip antenna using dual-patch radiators

Indu Jiji Rajmohan, Nasimuddin, Arokiaswami Alphones

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

4 Citations (Scopus)


A circularly polarized microstrip antenna with omnidirectional radiation pattern is proposed using coplanar waveguide feed. The antenna consists of dual-slotted-patch radiators and in between a single feed. The design includes back to back configuration of radiating patches with respect to the ground plane. The metallic patches include circular slots and rectangular slots and are identical. The antenna is optimized for circularly polarized omnidirectional radiation. The antenna is fabricated and measured. The measured axial ratio (AR) < 3-dB is obtained in all direction over a 3-dB AR bandwidth with gain of 2.31 dBic. The measured results showed that the proposed design exhibit good CP characteristics in the omnidirectional radiation.

Original languageEnglish
Title of host publication2013 Asia-Pacific Microwave Conference Proceedings, APMC 2013
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages3
ISBN (Print)9781479914746
Publication statusPublished - 2013
Externally publishedYes
Event2013 3rd Asia-Pacific Microwave Conference, APMC 2013 - Seoul, Korea, Republic of
Duration: 5 Nov 20138 Nov 2013


Other2013 3rd Asia-Pacific Microwave Conference, APMC 2013
CountryKorea, Republic of


  • circularly polarized radiation
  • Coplanar waveguide feed
  • Omnidirectional radiation
  • slots

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