发明授权
- 专利标题: Radio receiver and radio transmitter
- 专利标题(中): 无线电接收机和无线电发射机
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申请号: US10595248申请日: 2005-09-06
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公开(公告)号: US07522893B2公开(公告)日: 2009-04-21
- 发明人: Akira Kato
- 申请人: Akira Kato
- 申请人地址: JP Kyoto
- 专利权人: Murata Manufacturing Co., Ltd.
- 当前专利权人: Murata Manufacturing Co., Ltd.
- 当前专利权人地址: JP Kyoto
- 代理机构: Keating & Bennett, LLP
- 优先权: JP2005-001587 20050106
- 国际申请: PCT/JP2005/016280 WO 20050906
- 国际公布: WO2006/073013 WO 20060713
- 主分类号: H03J7/32
- IPC分类号: H03J7/32 ; H04B1/06
摘要:
In a radio receiver including an aerial wire (1) that receives a radio signal in which a transmission signal is superimposed on a carrier, a (VCXO 2) that oscillates a local oscillation signal, a frequency multiplier (3), and a demodulation circuit that demodulates the transmission signal on the basis of the radio signal and the local oscillation signal, an oscillation frequency control circuit that repeatedly sweeps the frequency of the local oscillation signal over a frequency bandwidth that is equal to or more than the width of a frequency drift in a carrier frequency from the aerial wire (1) or over a frequency bandwidth that is equal to or more than the width of a frequency drift in the local oscillation signal is provided.
公开/授权文献
- US20080254755A1 Radio Receiver and Radio Transmitter 公开/授权日:2008-10-16