On the Realization of First-Order Current-Mode AP/HP Filter
Alternativní metriky PlumXhttp://hdl.handle.net/11012/36953
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A compact circuit topology for the realization of the current-mode first-order allpass (AP) and highpass (HP) filters is described. The proposed circuit contains a minimum number of components, i.e., eight bipolar transistors and one grounded capacitor. The advantages of this circuit are the use of only grounded capacitor as a passive element, the electronic tunability of its parameters and its potential for low-voltage operation. Some simulation results are also reported, which demonstrate the effectiveness of the proposed circuit. Owing to the pole frequency of the filter circuit is normally dependent on temperature; a low-voltage translinear–based current source circuit for temperature compensation is also suggested.
Zdrojový dokumentRadioengineering. 2013, vol. 22, č. 4, s. 1007-1015. issn 1210-2512
- 2013/4