Title :
A 2-Pole Bandpass Filter Assisted by a MMIC Impedance for Losses Compensation and Frequency Control
Author :
Plaze, J.Ph. ; Billonnet, L. ; Jarry, B. ; Guillon, P.
Author_Institution :
IRCOM UMR C.N.R.S. 6615 - 123, Avenue Albert Thomas - 87060 Limoges Cedex - France. Tel: +(33) 5-55-45-72-54, e-mail: gary@ircom.unilim.fr
Abstract :
In this paper, we present a new 2-pole bandpass filter associated with an active impedance. The active part is equivalent to a negative resistance and a tunable capacitor. Its role is both to compensate for the losses of the filter and to adjust the resonant frequency. In a first part, we show design and measurements of the active circuit. In a second part, we associate this circuit with a passive 2-pole bandpass filter synthesised with quasi-lumped elements in microstrip technology.
Keywords :
Active circuits; Band pass filters; Capacitors; Circuit synthesis; Electrical resistance measurement; Frequency control; Impedance; MMICs; Resonant frequency; Tunable circuits and devices;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.339028
