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This paper presents the design of a subwavelength electromagnetic band gap (EBG) isolator for a biomedical repeater device. The repeater device is meant to amplify the attenuated RF signal sent from reader antenna and retransmits it to a miniature implant sensor. The EBG isolator working at UHF RFID frequency of 900 MHz occupies an area of 3.1 cm × 2 cm. It increases isolation between orthogonal loops...
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