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A NEW VARIABLE BEAMWIDTH ANTENNA FOR TELEMETRY TRACKING SYSTEMSRichard, Gaetan C., Gonzales, Daniel G. 11 1900 (has links)
International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / This paper presents a new variable beamwidth antenna designed for use in telemetry
tracking systems when a high gain/low gain antenna configuration is required. This
antenna can be commanded to continuously vary its beamwidth between a high
gain/narrow beamwidth mode of operation and a low gain/ wide beamwidth mode of
operation. A design goal of a 4:1 increase in beamwidth has been set and a 3.0:1
increase has been achieved without causing any significant degradation in the shape of
the antenna patterns and without generating exceedingly high sidelobes in the low
gain setting. The beamwidth variation occurs continuously without any loss of data,
boresight shift or jitter such as experienced with the operation of conventional
implementations of the high gain/low gain antenna technique.
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