A multimode 0.3-200-kb/s transceiver for the 433/868/915-MHz bands in 0.25-μm CMOS. - Philip Quinlan; Patrick Crowley; Miguel Chanca; Sean Hudson; Bill Hunt; Kenneth Mulvaney; Guido Retz; Cormac E. O'Sullivan; Patrick Walsh (IEEE J. Solid State Circuits, 2004)