臺灣博碩士論文加值系統

在這篇論文中,提出一個新的關於交換電容濾波器設計方法,這方法是
採用多工的方法來實現高階濾波器,用雙線性轉換,包括低通,帶通,高通濾
波器可用四個基本電路來加以組合實現,因為多工方法的有效運用,在實現
高階濾波器時只用較少的運算放大器,開關,電容及小的IC面積,但需要增
加時序,用八階Butterworth低通,帶通,高通濾波器的設計例子來證明提出
的方法適用於高階濾波器設計,電路使用SWITCAP軟體來模擬,電腦的模擬
結果證明數學式的正確及設計方法的功能.

In the thesis, a new Switched-Capacitor (SC) filter design
methodologyuseing multiplexing technique is proposed to realize
arbitrary high-order filter.Using the bilinear transformation,
filters including lowpass,bandpass, highpass can implemented by
various combination of four basic function SC circuits. Because
of the efficient use of multiplexing techniques, the realized
high-order filters have less op-amps, switches,capacitors, and
smaller chip area, but at the cost of increasing clockphases.
Eighth-order Butterworth lowpass, bandpass, and highpass filter
design examples are presented to demonstrate how to apply the
proposed method to design the high-order filters. The proposed
circuits are simulated with SWITCAP. Computer simulation result
verified the functioncorrectness and the performance of the
proposed design method.