Accession Number:

AD0371638

Title:

BROADBEAM ECM ANTENNAS FOR DESTROYER INSTALLATIONS

Descriptive Note:

Memorandum rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Jesswein, A. J.
• Lesko, N. J.

Report Date:

1966-03-18

Pagination or Media Count:

18.0

Abstract:

Site reflections reduce the isolation of omniazimuth antennas below the value required for stable operation of the high-gain amplifiers used in lectronic decoy systems, unless the top of the highest mast is used as an antenna site. An analysis and development program to build a dual semi-circular azimuth coverage antenna has been conducted. The objectives were to choose a universally available site, measure the ships structure reflection from this site, develop an antenna with a pattern shaped to fit the measured contour and test the antenna aboard ship to prove the satisfactory operation of the beacon with properly designed antennas. Horizontally polarized slot antennas were designed to fit the required pattern in the S and X bands. They were installed aboard the USS KRAUS, one of the ships whose contour was measured, and tested at sea where experimental verification of satisfactory performance was obtained.

Descriptors:

• *SHIP ANTENNAS
• INSTALLATION
• RADAR CROSS SECTIONS
• RADAR REFLECTIONS
• ANTENNAS
• DESTROYERS

Subject Categories:

• Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE