Page 202 - Satellite Communications, Fourth Edition
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Electromechanical tracking
Flat panel antenna
Motor for EL scanning
Wave-guide distributor
Down-converter
Tracking PCB
Motor for AZ scanning
(a)
Combinational tracking
Flat panel antenna
Phaseshifters EL scanning
Wave-guide distributor
Down-converter
Tracking PCB
Motor for AZ scanning
(b)
Electronic tracking
Flat panel antenna
Wave-guide distributor
Phaseshifters EL scanning
Down-converter
Tracking PCB
(c)
Figure 6.33 Assembly details of a planar array. (a) electromechanical
tracking, (b) combined electromechanical and electronic tracking, (c) elec-
tronic tracking. (Courtesy of Michael Parnes. Source: http://www.ascor.
eltech.ru/ascor15.htm)
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