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Office of Telecommunications OT Report 77-131Design of a Van-Top Low-Profile HF AntennaOctober 1977M.T. Ma, R.G. Fitzgerrell |
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Abstract: An electrically small antenna is one whose physical size is a small fraction of the operating wavelength. It has been known that it is rather difficult to design such an antenna. One of the most challenging problems associated with this antenna is the realization of a respectable radiation efficiency and bandwidth. A special low-profile antenna whose height is in the order of 12 to 18 inches (30 to 46 cm) has been designed for mobile communications within the frequency range of 3 to 12 MHz. The antenna is to be installed on the top of a vehicle. The design principle and the measured radiation character¬istics in terms of power gain and radiation efficiency for a full-scale model are given. |
Keywords: Electrically-small antenna, gain measurement, high-frequency, low-profile, mobile communication, radiation efficiency |
Disclaimer: Certain commercial equipment, components, and software are identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses. |
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