Accession Number:

ADP007448

Title:

Flush Mounted Flour-Arm Spiral With Shallow Backup Cavity,

Descriptive Note:

Corporate Author:

MOTOROLA INC TEMPE AZ GOVERNMENT ELECTRONICS GROUP

Personal Author(s):

• Kobus, Joseph
• Munger, David

Report Date:

1992-02-01

Pagination or Media Count:

30.0

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