发明授权
- 专利标题： Multi-mode wireless communication system
- 专利标题（中）： 多模式无线通信系统
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申请号： US09162210申请日： 1998-09-28
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公开(公告)号： US06269253B1公开(公告)日： 2001-07-31
- 发明人: Takaaki Maegawa , Hiroyuki Nakamura , Makoto Sakakura , Hiroaki Kosugi , Junichi Takada
- 申请人： Takaaki Maegawa , Hiroyuki Nakamura , Makoto Sakakura , Hiroaki Kosugi , Junichi Takada
- 优先权： JP9-262466 19970926
- 主分类号： H04B138
- IPC分类号： H04B138
摘要：
A multi-mode wireless system having a modulator (11) for modulating two system signals (low frequency signals for the GSM system and high frequency signals for the DCS1800 system), a first local oscillator (14) for oscillating a signal of a predetermined frequency, a n-divider (15) for dividing a signal from the first local oscillator by a factor of n, a high frequency mixer (13) for converting a signal to a high frequency side output (17) according to a signal output from the first local oscillator (14) and a signal output from the modulator (11), and a low frequency mixer (12) for outputting a signal to a low frequency mixer (16) according to an n-divided signal and a signal from the modulator (11).
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