Experimental study of rectenna connection for microwave power transmission

There an two factors that decrease conversion efficiency from microwave pow er to de power. One is mutual coupling of rectenna elements. The other is c hange of circuit conditions due to rectenna connections. In this work, we i nvestigate effects of rectenna connections on output characteristics with t wo rectenna elements. We examine the output powers of rectennas connected i n series or parallel and compare them with the sum of their individual maxi mum output powers. The experimental results indicate that the parallel conn ection produced a higher output power than the series connection did. The o utput power was approximately equal to the sum of maximum output powers of the individual rectennas. (C) 2001 Scripta Technica, flee tron Comm Jpn Pt 2, 84(2): 27-36, 2001.