VHF collar integrated antenna for ground link of GPS based location system

Sungjong Yoo, Kathleen L. Melde

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


This paper presents the design of a low-profile collar-integrated antenna operating at 154.5 MHz for use as a ground link in a GPS-based location system for wildlife tracking. The antenna is a conformal zigzag wire antenna that can be easily integrated into the collar. The power reduction caused by lower gain is overcome by improving the return loss. Input impedance matching at 154.5 MHz, which is the most important factor for return loss improvement, is done by changing the size of the antenna and by using a T-matching method that uses a shorting pin. The antenna efficiency is measured by Wheeler cap method. The design details and comparison of simulation and measurement results are presented.

Original languageEnglish (US)
Article number6272328
Pages (from-to)26-32
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Issue number1
StatePublished - 2013


  • Body proximity effect
  • GPS
  • Quarter-wave monopole antenna
  • T-matching
  • VHF antenna
  • input impedance matching
  • wearable antenna
  • zigzag antenna

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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