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    Wireless interfacing to cortical neural recording implants using 4-FSK modulation scheme

    , Article IEEE International Conference on Electronics, Circuits, and Systems, 6 December 2015 through 9 December 2015 ; Volume 2016 March , 2016 , Pages 221-224 ; 9781509002467 (ISBN) Eslampanah Sendi, M. S ; Judy, M ; Molaei, H ; Sodagar, A. M ; Sharifkhani, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc 
    This paper used a 4-level frequency shift keying (4-FSK) modulation scheme to enhance the density of wireless data transfer from implantable biomedical microsystems to the outside world. Modeling and simulation of the wireless channel for 4-FSK modulation in the case of a neural recording implant has been done. To realize the 4-FSK scheme, the modulator and demodulator circuits are proposed, designed and simulated in a 0.18-μm CMOS process, and in the 174-216 MHz frequency band at a data rate of 13.5 Mbps. Operated using a 1.8 V supply voltage, the modulator circuit consumes a power of 7.8 μW