发明授权
- 专利标题: Transceiver
- 专利标题(中): 收发器
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申请号: US12336178申请日: 2008-12-16
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公开(公告)号: US08036605B2公开(公告)日: 2011-10-11
- 发明人: Hiroshi Kamizuma , Satoshi Tanaka , Taizo Yamawaki , Yukinori Akamine , Koji Maeda
- 申请人: Hiroshi Kamizuma , Satoshi Tanaka , Taizo Yamawaki , Yukinori Akamine , Koji Maeda
- 申请人地址: JP Kawasaki-shi
- 专利权人: Renesas Electronics Corporation
- 当前专利权人: Renesas Electronics Corporation
- 当前专利权人地址: JP Kawasaki-shi
- 代理机构: Miles & Stockbridge P.C.
- 优先权: JP2007-324657 20071217
- 主分类号: H04B1/40
- IPC分类号: H04B1/40
摘要:
A transceiver includes an oscillator and a plurality of communication blocks. Each of the communication blocks includes frequency dividers and mixers. Frequency dividing number of the frequency divider included in one communication block is set to an even-numbered integer, and transmission local signals supplied from the frequency dividers to the mixer become quadrature signals having a phase difference of 90 degrees. The frequency dividing number of another frequency divider in the another communication block is set to a non-integer, and communication local signals supplied from the frequency divider to the mixers become non-quadrature signals having a phase difference at a predetermined offset angle from 90 degrees. The transceiver further includes a converting unit for giving a compensation offset amount having almost the same absolute value and having a polarity opposite to that of the offset angle to communication analog signals related to the mixer of the another communication block. Increase in the number of voltage-controlled oscillators for multiband communication, broadening of the band, and increase in phase noise can be reduced.
公开/授权文献
- US20090156135A1 TRANSCEIVER 公开/授权日:2009-06-18