Talk:Antenna analyzer

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Even the first sentence contains an error

The first sentence says "An antenna analyzer (also known as a noise bridge, RX bridge, SWR analyzer, or RF analyzer) is a device used for measuring the efficiency of antenna systems in radio electronics applications."

This is rubbish. You can't measure the efficiency of an antenna using the sort of instrument described in the document. The efficiency is defined as the fraction of Pr/Pa where Pr is the power radiated, and Pa is the power accepted. Efficiency and SWR are two entirely different things. An antenna can have a VSWR of 100:1 and still be more than 99% efficient. An antenna can have an excellent VSWR, and still have poor efficiency. A dummy load has a good match, but an extremely poor efficiency. — Preceding unsigned comment added by 109.152.101.216 (talk) 20:59, 31 December 2015 (UTC)[reply]