A reconfigurable circularly polarized microstrip antenna with a slotted ground plane

Won Sang Yoon, Jung Woo Baik, Hun Sung Lee, Seongmin Pyo, Sang Min Han, Young Sik Kim

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)


This letter describes a square patch antenna with a switchable circular polarization (CP) sense. The proposed antenna has four L-shaped slots on the ground plane, and the CP radiation can be generated by current perturbation due to the slotted ground plane. Because the CP sense of the proposed antenna is altered by the current path that is redirected with switched p-i-n diodes on the slots, the CP direction of the proposed antenna can be simply switched between the right-handed and left-handed CPs. As the slot and bias circuits are not placed on the patch side, the proposed antenna has a simple structure and can radiate a CP wave without altering the main beam direction. The experimental results show that antennas have excellent switchable radiation performance at 2.4 GHz.

Original languageEnglish
Article number5657230
Pages (from-to)1161-1164
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2010


  • Circular polarization (CP)
  • microstrip patch antenna
  • polarization diversity
  • reconfigurable antenna
  • slotted ground

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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