Dual-band ring slot antenna with circular polarization

Chin Sung Lin, Li Ting Chen, Tsair Rong Chen, Jeen Sheen Row

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A design for dual-band circularly polarized (CP) antennas is presented. The antenna is composed of two concentric shorted annular slots, and each slot can generate CP radiation at its one wavelength resonant mode or one-and-a-half wavelength resonant mode by varying the position of the shorted section. When the one wavelength mode of the outer slot and the one-and-a-half wavelength mode of the inner slot are simultaneously excited with a microstrip line, the antenna has two CP operating frequencies with a large frequency ratio (FR). A small FR can also be achieved when the outer and inner annular slots are operated at the one-and-a-half wavelength mode and one wavelength mode, respectively. For the proposed design, two examples with the FRs of 1.05 and 1.9 are designed and implemented. Details of the experimental results are shown.

Original languageEnglish
Pages (from-to)2077-2080
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number9
Publication statusPublished - 2013 Sep 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Dual-band ring slot antenna with circular polarization'. Together they form a unique fingerprint.

Cite this