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Integrated bandpass filters

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1 Author(s)
Kamal U. Ahmed ; University of Roorkee, Electronics & Communication Engineering Department, Roorkee, India

The letter presents some new results associated with one bandpass (b.p.) filter configuration of the integrated uniform R0-C0KR0 structure consisting of two rectangular resistive films, one having per-unit-length (p.u.l.) constant series resistance R0 and the other KR0 (where K is a dimensionless constant), separated from each other by a dielectric film having p.u.l. constant shunt capacitance C0. It is shown that the output voltage in the b.p. region may be made almost constant for the load fluctuations in the wide range R0 ¿ Rt < ¿ (where Rt = load resistance) by selecting K ¿ 0.3. The range of variation of Rt producing constant output voltage in the b.p. region is found to be narrower for increasing value of K.

Published in:

Electronics Letters  (Volume:16 ,  Issue: 11 )