LES-8/9 Antenna Systems. Volume 2. S-Band Telemetry.
Abstract
This report describes the design and performance of the antennas and related r.f. components developed for the Lincoln Experimental Satellites, LES-8 and LES-9. Volume 1 (SECRET) describes the UHF system, Volume 2 the S-band, and Volume 3 the K-Band system. The S-band telemetry antenna system consisted of an earth-facing antenna with a nominal 10 dB of gain and an oppositely pointing small helix, for use before the attitude of the satellite was stabilized. The antennas are transmitting only, in the telemetry band 2240-2250 MHz. The forward antenna was a narrow band cross-dipole mounted in a cup or open cavity, with a peak gain of about 12 dB. A small fraction of the telemetry signal was coupled (7 dB coupler) to the rear antenna in its use as a backup. The details of the design of the two antennas, the coupler, as well as test-hats used on both antennas during system development are described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 30, 1977
- Accession Number
- ADB026730
Entities
People
- Alan J Simmons
- Charles A. Lindberg
- Joseph C. Lee
Organizations
- Massachusetts Institute of Technology