发明授权
- 专利标题: Direct digital amplitude modulator
- 专利标题(中): 直接数字幅度调制器
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申请号: US10426557申请日: 2003-04-30
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公开(公告)号: US07164328B2公开(公告)日: 2007-01-16
- 发明人: Jiren Yuan , Yijun Zhou
- 申请人: Jiren Yuan , Yijun Zhou
- 申请人地址: SE Kista
- 专利权人: Infineon Technologies Wireless Solutions Sweden AB
- 当前专利权人: Infineon Technologies Wireless Solutions Sweden AB
- 当前专利权人地址: SE Kista
- 代理机构: Baker Botts L.L.P.
- 优先权: SE02411/01 20011101
- 主分类号: H03C1/00
- IPC分类号: H03C1/00 ; H03C3/00 ; H04L27/36
摘要:
Various embodiments of a direct digital amplitude modulator (DDAM) for modulating radio frequency (RF) or intermediate frequency (IF) or baseband signal with the invented interpolation technique are disclosed. The interpolation technique greatly reduces the amplitudes of alias signals without using an analog filter. The embodiments therefore are significant for various communication transmitters to achieve simple structure, good linearity and high power efficiency.
公开/授权文献
- US20050074073A1 Direct digital amplitude modulator 公开/授权日:2005-04-07