发明名称 |
Quadrature modulation circuit |
摘要 |
A quadrature modulation circuit includes a low pass filter which operates by a time division process for the in-phase channel and quadrature-phase channel, and reduces address requirements data using amplitude symmetry of the wave form and/or using symmetry wave form on the time axis. The capacity of the ROM is reduced by half or more and the configuration of the quadrature modulation circuit is simplified.
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申请公布号 |
US5285479(A) |
申请公布日期 |
1994.02.08 |
申请号 |
US19910791228 |
申请日期 |
1991.11.13 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
IWANE, YASUSHI |
分类号 |
H04L25/03;H04L27/20;(IPC1-7):H04L27/04;H04L27/12 |
主分类号 |
H04L25/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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