发明名称 |
Circuit for reconstructing an analog signal from a digital signal and transmission system, particularly for WCDMA cellular telephony, including such circuit |
摘要 |
A circuit for reconstructing an analog signal starting from a digital input signal includes a digital to analog converter and a low pass-filter connected at the output of the converter for receiving the analog format signal and outputting a reconstructed analog signal. The low pass filter is an active filter continuous in time and current-coupled to the output of the digital-analog converter. The digital-analog converter is of the current-steering type functioning at a sampling frequency greater than the Nyquist frequency of the analog signal.
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申请公布号 |
US7400285(B2) |
申请公布日期 |
2008.07.15 |
申请号 |
US20050569630 |
申请日期 |
2005.05.19 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
NICOLLINI GERMANO;CONFALONIERI PIERANGELO;MARTIGNONE RICCARDO |
分类号 |
H03M1/66;H03M1/74;H04B1/707 |
主分类号 |
H03M1/66 |
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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