Accession Number : AD0820659

Title :   AN ACTIVE RETRODIRECTIVE ARRAY WITH BILATERAL TUNNEL DIODE AMPLIFIERS.

Descriptive Note : Technical rept.,

Corporate Author : ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY

Personal Author(s) : Snyder, Anthony F.

Report Date : AUG 1967

Pagination or Media Count : 46

Abstract : The array factor of a 21-element retrodirective array, with bidirectional amplifiers integrated into the interconnecting transmission lines, is derived in this report. The directivity of the array for boresight and off-angle illumination is calculated for various array spacings. Basic array measurements were taken on a 4-element S-band array. The constructed array consisted of equiangular spiral antennas, balanced strip transmission lines and bilateral tunnel diode amplifiers. Theoretical gain expressions for the amplifiers are derived and measured gain vs. frequency curves plotted. (Author)

Descriptors :   (*ANTENNA ARRAYS, TUNNEL DIODES), SPIRAL ANTENNAS, AMPLIFIERS, S BAND, STRIP TRANSMISSION LINES, MATHEMATICAL ANALYSIS.

Subject Categories : Electrical and Electronic Equipment
      Unmanned Spacecraft
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE