Accession Number : ADP007448
Title : Flush Mounted Flour-Arm Spiral With Shallow Backup Cavity,
Corporate Author : MOTOROLA INC TEMPE AZ GOVERNMENT ELECTRONICS GROUP
Personal Author(s) : Kobus, Joseph ; Munger, David
Report Date : FEB 1992
Pagination or Media Count : 30
Abstract : Performance is presented of a four-arm 3.7 inch diameter 2-18 GHz spiral antenna flush mounted on a ground plane containing a shallow recessed backup cavity. The spiral arms are precision etched on a .025 inch fiberglass substrate suspended .150 inch above the bottom of the cavity with a honeycomb spacer, forming a bonded assembly. Both measured and calculated sum and difference patterns, and gain are included. Calculated patterns are obtained, together with currents on the spiral arms, using a wire model Method of Moments simulation.
Descriptors : *ANTENNAS, *SPIRAL ANTENNAS, ASSEMBLY, DIAMETERS, FIBERGLASS, GAIN, METHOD OF MOMENTS, MODELS, MOMENTS, PATTERNS, PRECISION, SIMULATION, SPACERS, SUBSTRATES, WIRE.
Subject Categories : Electrical and Electronic Equipment
Test Facilities, Equipment and Methods
Distribution Statement : APPROVED FOR PUBLIC RELEASE