发明名称 Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites and hemispherical coverage antennas
摘要 The methods and systems for reducing multipath fading and outage from blockage in a radio broadcasting system that is adapted to simultaneously broadcast signals having frequencies in the range of about 300 MHz to about 3,000 MHz from two or more satellite sources traveling on a substantially geosynchronous orbit with the satellite sources separated from one another by a sufficient distance to minimize outage from physical blockages and multipath fading of signals from these satellites and received by a plurality of fixed and mobile platforms using substantially flat, hemispherical coverage antennas, each antenna having an outer diameter no greater than about 10 inches and each adapted to receive frequencies in the range of about 300 MHz to about 3,000 MHz.
申请公布号 US5485485(A) 申请公布日期 1996.01.16
申请号 US19940227045 申请日期 1994.04.13
申请人 CD RADIO INC. 发明人 BRISKMAN, ROBERT D.;SEAVEY, JOHN M.;MEDEIROS, PAUL
分类号 H04B7/185;H04H40/90;(IPC1-7):H04B1/69 主分类号 H04B7/185
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