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Floating capacitance multiplier realization based on commercially available integrated circuits

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Abstract

This article is an attempt to present a tunable floating capacitance multiplier using commercially available integrated circuits, namely LT1228. The proposed design utilizes three LT1228s as active electronic components and only one capacitor as a passive component. The multiplication factor of the capacitance multiplier is electronically tunable via adjusting the external supply currents of the LT1228s. Besides, a careful analysis of the parasitic element effects is also included. To verify the practical features of the proposed floating capacitance multiplier circuit, several simulations using PSPICE program tool and extensive laboratory measurements were performed.

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Acknowledgements

This work was supported by King Mongkut’s Institute of Technology Ladkrabang.

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Authors and Affiliations

  1. School of Engineering, King Mongkut’s Institute of Technology Ladkrabang (KMITL), Bangkok, 10520, Thailand

    Natchanai Roongmuanpha & Worapong Tangsrirat

Authors
  1. Natchanai Roongmuanpha
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  2. Worapong Tangsrirat
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Corresponding author

Correspondence to Worapong Tangsrirat.

List of Symbols

List of Symbols

g m :

Transconductance gain

R OL :

Small-signal transresistance of the LT1228

I B :

External DC bias current

R p :

Parasitic resistance at terminal p

R n :

Parasitic resistance at terminal n

R z :

Parasitic resistance at terminal z

C p :

Parasitic capacitance at terminal p

C n :

Parasitic capacitance at terminal n

C z :

Parasitic capacitance at terminal z

R x :

Parasitic resistance at terminal x

ω :

Angular frequency

R m :

Transresistance gain

ω o :

Resonant angular frequency

f o :

Resonant frequency

Q :

Quality factor

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Roongmuanpha, N., Tangsrirat, W. Floating capacitance multiplier realization based on commercially available integrated circuits. Sādhanā 47, 93 (2022). https://doi.org/10.1007/s12046-022-01875-6

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  • DOI: https://doi.org/10.1007/s12046-022-01875-6

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