Wireless radio modem with minimal interdevice RF interference,申请号US19970915038-传众专利搜索

Wireless radio modem with minimal interdevice RF interference

申请公布号：US5917854(A)

申请号：US19970915038

申请日期：1997.08.20

申请公布日期：1999.06.29

申请人：

RESEARCH IN MOTION LIMITED

发明人：TAYLOR, BRYAN;LAZARIDIS, MIHAL;EDMONSON, PETER;JARMUSZEWSKI, PERRY;ZHU, LIZHONG;CARKNER, STEVEN;WANDEL, MATTHIAS

分类号：H04B1/16;H04B1/40;H04L7/04;H04L12/28;(IPC1-7):H03A1/38

主分类号：H04B1/16

摘要：A wireless radio modem for incorporation into a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimize the RF interference between the radio modem and the host system. Radio modem power conservation is further maximized by 1) simplifying signal modulation processing by use of a single sideband suppressed carrier waveform transition table, thereby reducing processing requirements; and 2) incorporating a "sleep mode" feature in which all non-timer circuitry is powered-down when not in use.