发明名称 |
Frequency transposition method and device, in particular for the control of the transmission power of a cellular mobile telephone |
摘要 |
A frequency transposition device including an input terminal for receiving an incident signal SI and a modulator of the one-bit delta-sigma type MDU connected to the input terminal. A generator MGN provides a periodic auxiliary signal SAX with a frequency equal to a desired transposition frequency. A frequency transposer of the Gilbert cell type has a signal input BES connected to the output of the generator, a control input BCO connected to the output of the delta-sigma modulator MDU, and an output BS delivering a transposed signal STR.
|
申请公布号 |
US7738597(B2) |
申请公布日期 |
2010.06.15 |
申请号 |
US20050053179 |
申请日期 |
2005.02.08 |
申请人 |
STMICROELECTRONICS |
发明人 |
SMAINI LYDI;CERISIER PATRICK;GOUESSANT PHILIPPE |
分类号 |
H03K9/00;H03D7/14;H03G3/30 |
主分类号 |
H03K9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|