Design and Testing of Simple, Electrically Small, Low-Profile, Huygens Source Antennas with Broadside Radiation Performance

Ming Chun Tang, Hao Wang, Richard W. Ziolkowski

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

The efficacy of a simple, electrically small, low-profile, Huygens source antenna that radiates in its broadside direction is demonstrated numerically and experimentally. First, two types of electrically small, near-field resonant parasitic (NFRP) antennas are introduced and their individual radiation performance characteristics are discussed. The electric one is based on a modified Egyptian axe dipole NFRP element; the magnetic one is based on a capacitively loaded loop NFRP element. In both cases, the driven element is a simple coax-fed dipole antenna, and there is no ground plane. By organically combining these two elements, Huygens source antennas are obtained. A forward propagating demonstrator version was fabricated and tested. The experimental results are in good agreement with their analytical and simulated values. This low profile, ∼0.05λ0, and electrically small, ka = 0.645, prototype yielded a peak realized gain of 2.03 dBi in the broadside direction with a front-to-back ratio of 16.92 dB. A backward radiating version is also obtained; its simulated current distribution behavior is compared with that of the forward version to illustrate the design principles.

Original languageEnglish (US)
Pages (from-to)4607-4617
Number of pages11
JournalIEEE Transactions on Antennas and Propagation
Volume64
Issue number11
DOIs
StatePublished - Nov 2016

Keywords

  • Broadside directivity
  • Huygens source
  • electrically small antennas (ESAs)
  • low profile
  • metamaterial-inspired structures
  • near-field resonant parasitic (NFRP) antennas

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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