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Ka-band MMIC array system for ACTS aeronautical terminal experiment (Aero-X)During the summer of 1994, the Advanced Communication Technology Satellite (ACTS) Aeronautical Terminal Experiment (Aero-X) was successfully completed by the NASA Lewis Research Center (LeRC) and the Jet Propulsion Laboratory (JPL). 4.8 and 9.6 Kbps duplex voice links were established between the LeRC Learjet and the ACTS Link Evaluation Terminal (LET) in Cleveland, Ohio, via the ACTS. The antenna system used in this demonstration was developed by LeRC and featured LeRC and US Air Force experimental arrays using GaAs MMIC devices at each radiating element for electronic beam steering and distributed power amplification. The antenna system consisted of three arrays mounted inside the LeRC Learjet, pointing out through the windows. An open loop tracking controller developed by LeRC used information from the aircraft position and attitude sensors to automatically steer the arrays toward ACTS during flight JPL ACTS Mobile Terminal (AMT) system hardware was used as transceivers both on the aircraft and at the LET. The single 32 element MMIC transmit array developed by NASA/LeRC and Texas Instruments has an EIRP of 23.4 dBW at boresight. The two 20 GHz MMIC receive arrays were developed in a cooperative effort with the USAF Rome Laboratory/Electronic System Center, taking advantage of existing USAF array development contracts with Boeing and Martin Marietta. The Boeing array has 23 elements and a G/T of 16/6 db/degK at boresight. The Martin Marietta array has 16 elements and a G/T of 16.1 db/degK at boresight. The three proof-of-concept arrays, the array control system and their integration and operation in the Learjet for Aero-X are described.
Document ID
Document Type
Conference Paper
Raquet, Charles A. (NASA Lewis Research Center Cleveland, OH United States)
Zakrajsek, Robert J. (NASA Lewis Research Center Cleveland, OH United States)
Lee, Richard Q. (NASA Lewis Research Center Cleveland, OH United States)
Andro, Monty (NASA Lewis Research Center Cleveland, OH United States)
Turtle, John P. (Rome Lab. Hanscom AFB, MA United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Proceedings of the Fourth International Mobile Satellite Conference (IMSC 1995)
Subject Category
Communications and Radar
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19960022452Analytic PrimaryProceedings of the Fourth International Mobile Satellite Conference (IMSC 1995)
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