Title :
2.45 GHz telecontrol for cross-band biomedical radio transponder application
Author :
Crumley, G.C. ; Evans, N.E.
Author_Institution :
Sch. of Electr. & Mech. Eng., Ulster Univ., Newtownabbey, UK
Abstract :
The paper discusses the design of a minimum power 2.45 GHz pulse receiver and companion transmitter for use in a semi active, duplex RF transponder. A 50 Ω microstrip stub matched zero bias diode detector forms the heart of the body-worn receiver, achieving a tangential sensitivity of -56 dBm. Three-pole bandpass filtering provides rejection of out of band signals, typically 28 dB in the 900 MHz cellular band. A 3.6 V portable on-off-keyed transmitter with suitable output power to communicate with the transponder provided a full mobile transmitter for system tests
Keywords :
band-pass filters; biocontrol; biomedical telemetry; medical signal processing; telecontrol; transponders; 2.45 GHz; 3.6 V; 50 W; body-worn receiver; companion transmitter; cross band biomedical radio transponder application; full mobile transmitter; microstrip stub matched zero bias diode detector; out of band signals; portable on-off-keyed transmitter; pulse receiver; semi active duplex RF transponder; system tests; tangential sensitivity; telecontrol; three pole bandpass filtering; Band pass filters; Envelope detectors; Filtering theory; Heart; Microstrip; Power generation; Radio frequency; Radio transmitters; Receivers; Transponders;
Conference_Titel :
Information Technology Applications in Biomedicine, 1998. ITAB 98. Proceedings. 1998 IEEE International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-4973-3
DOI :
10.1109/ITAB.1998.674685
