Miniature Supercooled, Multiarm, Spiral, Antijam Controlled Reception Pattern Antenna (CRPA )

Period of Performance: 01/01/2003 - 12/31/2003


Phase 1 SBIR

Recipient Firm

Electro-radiation, Inc.
Fairfield, NJ 07004
Principal Investigator


Phase 1 develops an innovative approach for GPS antijam CRPA antennas using miniature multi-arm spiral elements to form a CRPA. The technique leverages experience with antijam technology, supercooling, and spiral antenna CRPA development. This combination of technologies and capabilities will result in a small, robust and innovative CRPA antijam solution for munitions. The effort will focus on the development of a spiral CRPA composed of spiral elements. In addition, the program will examine an alternate element design using a smaller dipole array, and a single spiral aperture array configured as a CRPA. The project will concentrate on performance and feasibility of these solutions using conventional materials at ambient temperatures and a study of supercooling to reduce aperture size and improve performance. The goal of the program will be to meet GPS receive and CRPA performance objectives in a significantly reduced aperture size that results in an adaptive antenna array capable of L1/L2 M-code bandwidth operation. Phase 1 results in a cost-effective CRPA design for munitions that extends GPS update performance in multiple jammer environments to the target. The small munitions CRPA approach will reduce size and cost, and provide high performance in a small space.