Thread: Antenna design
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Old 26-Mar-2017, 1:19 AM   #15
dbseeker
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Join Date: Apr 2014
Posts: 36
Please tolerate a question or two about reflectors. Optimum reflector for UHF antenna is 3 inches to add close to 3 db of gain according to what I can ascertain from this forum and HDTV primer. Is it safe to assume that the additional 6 inches the wave travels to and from the reflector to the active element is negligible in relation to the distance from the transmitter? At what reflector distance does out of phase signal occur? To me, at least intuitively, the shorter the reflector distance, the less likely the reflected signal would be out of phase.
On a related note, I have a antennacaft Y7-13 and the active elements on the antenna are 12 inches apart and linked together with the balun. I assume both collect signal and are additive in signal capture. Is there a wavelength formula that determines maximal signal strength based on active elements, distance, and reflectors?
thanks!!
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