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US 8,427,230 B2Granted
Current-mode analog baseband apparatus
AssigneeIndustrial Technology Research Institute
InventorsHorng-Yuan Shih, Kai-Cheung Juang, Wei-Hsien Chen
Life of this patent
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Abstract
A current-mode analog baseband apparatus is provided. The apparatus includes a current-mode low-order filter, a current-mode programmable gain amplifier (PGA) unit and a high-order filter. The input impedance is smaller than the output impedance in the current-mode low-order filter. An input terminal of the current-mode PGA unit is connected to an output terminal of the current-mode low-order filter. An input terminal of the high-order filter is connected to an output terminal of the current-mode PGA unit.
Claims9
An analog baseband apparatus, comprising:
- a current-mode low-order filter, configured to receive and process a current-mode RF differential signal, so as to output a first current-mode output differential signal, wherein an input impedance of the current-mode low-order filter is smaller than an output impedance thereof;
- a first current-mode programmable gain amplifier (PGA) unit, having an input terminal connected to an output terminal of the current-mode low-order filter, configured to receive and process the first current-mode differential output signal, so as to output a second current-mode differential output signal;
- and
- a high-order filter, having an input terminal connected to an output terminal of the first current-mode PGA unit, configured to receive and process the second current-mode differential output signal, so as to output a third current-mode differential output signal.
1 more element
Dependencies are inferred from the claim text.