发明名称 |
Pulse width modulation systems and methods |
摘要 |
Pulse width modulation systems and methods are described. In one aspect, a pulse width modulation system includes a register and a code word generator. The code word generator has an input for receiving a specified output frequency and a specified duty cycle and is operable to generate code words of different lengths. The code word generator is operable to generate a base code word having a length set to achieve the specified output frequency and having a thermometer code value set in accordance with the specified duty cycle. The code word generator is further operable to load the register with a code word pattern including a sequence of one or more copies of the base code word.
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申请公布号 |
US6822588(B1) |
申请公布日期 |
2004.11.23 |
申请号 |
US20040825577 |
申请日期 |
2004.04.15 |
申请人 |
AGILENT TECHNOLOGIES, INC. |
发明人 |
MARSHALL, JR. JERRY A.;SCHOPER JEFFREY G.;WATSON BRIAN S. |
分类号 |
H03K7/08;H03M7/16;H04L25/49;(IPC1-7):H03M7/00 |
主分类号 |
H03K7/08 |
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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