Flexible Efficient Quasi-Yagi Printed Uniplanar Antenna

Ming Chun Tang, Ting Shi, Richard W. Ziolkowski

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


A flexible quasi-Yagi printed antenna that is a compact, efficient directive radiator is demonstrated. The simple uniplanar design incorporates an arc-shaped strip, which serves as a near-field resonant parasitic (NFRP) element, and a coplanar-waveguide (CPW)-fed semiloop antenna. The simulated and experimental results that are in good agreement confirm the forward endfire nature of the antenna. The total electrical size is only 0.17λ0 × 0.43λ0, while having a high radiation efficiency to achieve a 5.76 dBi realized gain. A backward endfire version illustrates the radiation principles of the design. By mounting the uniplanar antenna conformally on a cylindrical structure, it is demonstrated numerically and experimentally that its radiation performance characteristics are maintained, confirming that only minor effects are introduced under bending conditions.

Original languageEnglish (US)
Article number7289377
Pages (from-to)5343-5350
Number of pages8
JournalIEEE Transactions on Antennas and Propagation
Issue number12
StatePublished - Dec 2015


  • Compact
  • directivity
  • endfire radiation
  • flexible antennas
  • printed antennas
  • uniplanar antennas

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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