Tuning method for a new electrically small antenna with low Q

Jacob J. Adams, Jennifer T. Bernhard

Research output: Contribution to journalArticlepeer-review


We theoretically describe and experimentally demonstrate a new class of electrically small spherical antennas with near-minimum radiation Q. The antenna operates by supporting the TM10 spherical mode and minimizing excitation of higher order modes. The antenna compares favorably to existing electrically small antennas and can be easily designed for any frequency or with any electrical size. The antenna can be matched without an external network using methods described in this work. Measurements of two antennas of different electrical sizes are presented to demonstrate the tunability of the structure.

Original languageEnglish (US)
Article number4785157
Pages (from-to)303-306
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
StatePublished - 2009


  • Bandwidth
  • Electrically small antenna
  • Helical antenna
  • Q
  • Spherical antenna

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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