Miniaturized Active Metamaterial Resonant Antenna with Improved Radiation Performance Based on Negative-Resistance-Enhanced CRLH Transmission Lines

Kepei Sun, Sanghyun Han, Jun H. Choi, Jay Kyoon Lee

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

In this letter, a miniaturized microstrip resonant antenna (MRA) based on the active metamaterial resonator is presented. Unlike the passive composite right/left-handed (CRLH) resonators, the presented active metamaterial resonators are realized using the negative-resistance-enhanced CRLH transmission line that incorporates active circuits for loss compensation. The active circuit uses bipolar junction transfer in its inverted-common-collector configuration to provide a negative resistance for the proposed active MRA. The presented passive and active antennas both operate in the negative-first-order resonance mode and thus have reduced dimensions compared to the conventional planar MRAs. The integration of the active elements delivers higher radiation gain compared to the passive negative-order CRLH resonator antenna. The passive and active antennas were fabricated, and the measured results are presented to validate the concept.

Original languageEnglish (US)
Pages (from-to)1162-1165
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Volume17
Issue number7
DOIs
StatePublished - Jul 1 2018

Keywords

  • Antennas
  • composite right/left-handed (CRLH)
  • metamaterial
  • microstrip patch antennas
  • negative resistance CRLH
  • resonator antennas

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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