Accession Number:

AD0275599

Title:

A STUDY OF THE NEAR FIELD BEHIND A PARABOLIC ANTENNA

Descriptive Note:

Corporate Author:

NAVAL WEAPONS LAB DAHLGREN VA

Personal Author(s):

• LYSHER,LEON J.

Report Date:

1962-05-15

Pagination or Media Count:

1.0

Abstract:

The near-field behind a p rabolic antenna is nalyzed using the geometrical theory of diffraction. Equations are developed to calculate t e fi ld behind an ant nna of arbi rary size, focal length and aperture field distribution. These equations are then applied to a particular antenna. The results are then compared with the measured field it is found that there is a good AGR EM N AT ANGL S UP TO 70 DEGREES FROM THE AXIS OF SYMM TRY. UT OR

Descriptors:

• *ELECTROMAGNETIC FIELDS
• *PARABOLIC ANTENNAS
• *RADIATION HAZARDS
• ANTENNA FEEDS
• ANTENNA LOBES
• ANTENNA RADIATION PATTERNS
• ANTENNAS
• ELECTROMAGNETIC PROPERTIES
• ELECTROMAGNETIC RADIATION
• HAZARDS
• MATHEMATICAL ANALYSIS
• ORDNANCE
• RADIATION EFFECTS
• WAVEGUIDES

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE