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Antenna Phase Shifters

October 30th Fact-of-the-Day

It is common practice to shift the relative phase and to adjust the relative power level fed to one or more radiators of a multi-radiator antenna system to precisely shape the radiation pattern. Where relative-phase and relative-power both must be different between radiators, it is best to put the phase-shifter(s) in the feed line(s) supplying the element(s) being fed the least power, because all phase-shifters lose power and it is better to have that loss be a percentage of lowest possible power level(s). ©2004 Martek, International. All rights reserved.


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