Abstract
The modified switched-capacitor biquad circuits for low-Q and high-Q structures are presented in this paper. By using the switched-opamp technique, the structures make only one active opamp in each phase without destroying their biquad functions. This idea can be applied on the implementation of high-order SC filters to save more power consumption. Meanwhile, the z-domain transfer functions for SC biquad circuits are analyzed to verify the modified structures. Finally, three types of low-Q SC biquad filters are presented as design examples. The simulation results show that the frequency responses of the general active-RC biquad circuits and the modified SC ones are much similar.
| Original language | English |
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| Pages | 241-244 |
| Number of pages | 4 |
| Publication status | Published - 2004 Dec 1 |
| Event | 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology - Tainan, Taiwan Duration: 2004 Dec 6 → 2004 Dec 9 |
Other
| Other | 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology |
|---|---|
| Country/Territory | Taiwan |
| City | Tainan |
| Period | 04-12-06 → 04-12-09 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering