%A Chuc Doan Huu %A Duong Bach Gia %J International Journal of Electrical and Computer Engineering (IJECE) %T Design and Fabrication of Rectifying Antenna Circuit for Wireless Power Transmission System Operating at ISM Band %X This paper introduces an overview of a rectifying antenna (rectenna) circuit topology for microwave power transmission system. Specially, a rectenna based on a microstrip patch antenna and a microwave double voltage rectifier at 2.45GHz were designed and fabricated. The antenna’s return loss is achieved of -15 dB at 2.45GHz. The microwave to DC conversion efficiency of the rectenna was measured as 71.5% with 22 dBm input power and 810  load. The design and simulated results were carried out by the microwave engineering professional design software, known as ADS2009 package. All design and simulation results will be reported. %N No. 4 %P pp. 1522-1528 %V Vol.6 %D 2016 %R DOI: 10.11591/ijece.v6i4.10287 %L SisLab2173