Monopole Element at the Center of a Circular Groundplane of Arbitrary Radius. Volume 1. Theory and Results
Abstract
The Air Force SINCGARS VHF-FM radio is a frequency-hopping anti-jam radio which utilizes an electrically short antenna to minimize aerodynamic drag on airborne platforms. The development of optimally efficient, electronically tuneable antennas for this radio is of interest. Although the antenna groundplane is platform-dependent, it is usually small compared to an rf wavelength. A circular groundplane provides a standardized groundplane geometry with which to model and evaluate candidate antennas. Accordingly, a VHF antenna range with an 8 ft. diameter circular groundplane has been constructed to evaluate candidate antennas. The electrical properties of a monopole element at the center of a circular groundplane of finite radius are of interest to this program for (a) qualifying the antenna range; (b) establishing antenna standards with which to measure test antennas; and (c) modeling candidate antennas. A survey of the literature revealed that although this antenna has the simplest geometry of any monopole antenna, its properties are neither well understood nor standardized, particularly for groundplane radii which are small or comparable to a wavelength. This paper attempts to address this deficiency.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1986
- Accession Number
- ADA166991
Entities
People
- C. C. Li
- Melvin M. Weiner
- S. P. Cruze
- W. J. Wilson
Organizations
- MITRE Corporation