JOSEPH R MATTIOLI
Dentist in Philadelphia, PA
License number
Pennsylvania DS012511L
Category
Dentistry
Type
Dentist
Address
Address
Philadelphia, PA 19152
Professional information
Active Array Antenna Radar Structure
US Patent:
5459474, Oct 17, 1995
Filed:
Mar 22, 1994
Appl. No.:
8/215551
Inventors:
Joseph A. Mattioli - Philadelphia PA
Ashok K. Agrawal - Mount Laurel NJ
Norman R. Landry - Mount Laurel NJ
Ashok K. Agrawal - Mount Laurel NJ
Norman R. Landry - Mount Laurel NJ
Assignee:
Martin Marietta Corporation - Moorestown NJ
International Classification:
H01Q 124
US Classification:
343702
Abstract:
An active array antenna, which may be used for radar, includes antenna elements (antelements) supported in a two-dimensional array. The fronts of the elements are protected by a cover. In order to allow easy repair, each column of antelements is associated with a slide-in carrier which simultaneously mates with all antelements of a column. Each carrier has a transmit-receive (TR) module for each antelement with which it mates, and a column beamformer. Each carrier also has logic modules and power supplies for the TR modules. The total width of each slide-in carrier with its TR modules, beamformer, logic and power supplies, is less than or equal to the column-to-column spacing. Each carrier can be slid out from the rear to expose all the active components for each column of antelements, so maintenance can be performed without environmental exposure.