发明名称 |
APPARATUS AND METHOD FOR TUNING A GM-C FILTER |
摘要 |
An apparatus to control a tuneable Gm-C filter, including and a filter that can be reconfigured as a free running oscillator by toggling the feedback sign of an output amplifier (304), a digital controller (42), sensitive to the output of the filter in the calibration configuration, and a DAC (44) to provide an analogue control signal (48) to the gm inputs of the transconductance amplifiers (310, 320) composing the filter. |
申请公布号 |
WO2009153211(A2) |
申请公布日期 |
2009.12.23 |
申请号 |
WO2009EP57236 |
申请日期 |
2009.06.11 |
申请人 |
QUALCOMM INCORPORATED;PIAZZA, FRANCESCO;CANTORO, CLAUDIO |
发明人 |
PIAZZA, FRANCESCO;CANTORO, CLAUDIO |
分类号 |
H03H11/12 |
主分类号 |
H03H11/12 |
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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