Analysis and Design of Antennas for Air Traffic Collision Avoidance Systems

C. Rembert Cockrell, Constantine A. Balanis

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The analysis and design procedure of an antenna for a CW Doppler radar system being developed for pilot warning of midair collision hazards is presented. The antenna consists of two vertical arrays of half-wavelength dipoles mounted near a circular conducting cylinder. Each vertical array is composed of three vertical dipoles. Each array provides relatively uniform illumination (2–3 dB) in the forward 180° angular segment of the horizontal plane and approximately +10-150°coverage in the vertical plane. The antenna could be used in a two-mode operation, either in a standard monopulse radar system (sum and difference amplitude patterns) or in a system where amplitude and phase are the measurable quantities.

Original languageEnglish (US)
Pages (from-to)960-967
Number of pages8
JournalIEEE Transactions on Aerospace and Electronic Systems
Issue number5
StatePublished - Sep 1971
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering


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