Accession Number:

ADA010454

Title:

Research Studies on Electromagnetic Radiation and Antennas.

Descriptive Note:

Final rept.,

Corporate Author:

HARVARD UNIV CAMBRIDGE MASS GORDON MCKAY LAB

Personal Author(s):

• King,Ronold W. P.

Report Date:

1974-07-01

Pagination or Media Count:

16.0

Abstract:

Researchers under the Contract have been concerned with two topics the cavity-backed slot antenna and the Beverage antenna. A complete quantitative understanding of the properties of the cavity-backed slot antenna was obtained in the form of extensive experimental data and an equivalent mathematical model. It is shown that the cavity-backed slot is not the complement of a strip dipole in the sense of Babinets principle as has been assumed incorrectly in some instances. An omnidirectional array consisting of cavity-backed slots and dipoles was studied theoretically and experimentally and its omnidirectional properties were demonstrated. Work on the horizontal wire antenna parallel to and close to a plane earth progressed. Measurements to determine the wave number for the antenna in its dependence on the properties of the earth and its height were carried out and compared with a new theory of the horizontal wire antenna. Extension of this theory to the terminated horizontal wire antenna Beverage antenna was made.

Descriptors:

• *ANTENNAS
• LINEAR SYSTEMS
• WIRE
• HORIZONTAL ORIENTATION
• ANTENNA RADIATION PATTERNS
• ANTENNA ARRAYS
• SLOT ANTENNAS
• OMNIDIRECTIONAL ANTENNAS
• DIRECTIONAL ANTENNAS

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE