Comparison of spherical antennas fabricated via conformal printing: Helix, meanderline, and hybrid designs

Jacob J. Adams, Scott C. Slimmer, Thomas F. Malkowski, Eric B. Duoss, Jennifer A Lewis, Jennifer T. Bernhard

Research output: Contribution to journalArticle

Abstract

The design tradeoffs between three spherically conformal electric monopolesthe spherical helix (SH), spherical meanderline (SM), and a hybrid designare explored through both simulation and measurement. We show that the SH is efficient, but can be difficult to impedance match without external components. On the other hand, the SM antenna has a widely controllable impedance with slightly increased loss. Thus, a hybrid design is proposed that retains the desirable qualities of both the SH and SM. All three designs are fabricated using a conformal printing technique for comparison. We describe the design tradeoffs and physical insights gained through evaluating the efficiency, $Q$, and matching behavior of these antennas.

Original languageEnglish (US)
Article number5730210
Pages (from-to)1425-1428
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Volume10
DOIs
StatePublished - Dec 1 2011

Keywords

  • Conformal printing
  • electrically small
  • impedance matching
  • quality factor
  • spherical antenna

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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