以DDCC設計之KHN biquad及振盪器

The Design of KHN biquad and oscillator employing Differential Difference Current Conveyors

邱偉元(Wei-Yuan Chiu)

指導教授 ： 洪君維

中原大學/工學院/電子工程研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500239

摘要

近年來，以電流式主動元件來設計類比線路受到相當的注意，其原因在於電流式主動元件擁有較寬的頻寬範圍、較大之動態範圍、較簡單的電路以及較低的能量消耗上具有潛在的優點。

差動差分電流傳輸器(Differential Difference Current Conveyor；DDCC)是一個新型的電流式元件，因此國際間目前以DDCC做為主動元件所合成之線路研究並不多。有鑑於此，本論文利用DDCC的特點，設計出一系列以DDCC為架構的一階濾波器、KHN biquad、萬用濾波器及振盪器電路。其中，使用DDCC設計之一階全通濾波器和KHN biquad 使用了最少的主、被動元件。所提出的萬用濾波器則是採用單端輸入與五端輸出的設計，並在不需改變電路的架構下，可同時實現高通、帶通、低通、帶拒和全通五種濾波信號。而所提出的振盪器電路使用了接地電阻器與接地電容器，將有利於電路積體化的實現。

最後，本論文所提出的電路皆在P-SPICE模擬軟體的驗證下，得到了符合理論值的模擬結果。

關鍵字

KHN biquad ； 電流式 ； 差動差分電流傳輸器 ； 振盪器

並列摘要

In recent years, the uses of current-mode active components to design analog circuits have received considerable attention. Current-mode active elements can provide the advantages of higher signal bandwidths, large dynamic range, simpler circuits and less power consumption.

The Differential Difference Current Conveyor (DDCC) is a novel current-mode active component. It was proposed by Chiu et al. in 1996. However, there are fewer research about analog circuits by using DDCC. For this reason, the first order filter, KHN biquad, universal filter, and oscillator by using DDCC are presented in this thesis.

Both the first order all-pass filter and KHN biquad employ the minimum number of active and passive components. The proposed universal filter with one input and five outputs that realize highpass, bandpass, lowpass, notch, and allpass signals, simultaneously, from the same circuit configuration. The proposed oscillator using the grounded capacitors and grounded resistors that is attractive for integrated circuit implementation.

Eventually, the P-SPICE simulation results that verify theoretical analyses are included.

並列關鍵字

Differential Difference Current Conveyors ； KHN biquad ； Current mode ； Oscillaotr

參考文獻

[1] Wilson, B., “Constant bandwidth voltage amplification using current conveyor,” International Journal of Electronics, 65, 983-988, 1988.

[2] Svoboda, J. A., “Comparison of RC op.-amp. and RC current conveyor filters,” International Journal of Electronics, 76, 615-626, 1994.

[3] Smith, K. C., and Sedra, A., “The current conveyors–a new circuit building block,” Proceedings of the IEEE, 56, 1368-1369, 1968.

[5] Roberts, G. W., and Sedra, A. S., “A general class of current amplifier-based biquadratic filter circuits,” IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 39, 257-263, 1992.

[6] Wilson, B., “Recent developments in current conveyors and current mode circuits,” International Journal of Electronics, 65, 983-988, 1988.