Title :
Using a negative capacitance to increase the tuning range of a varactor diode in MMIC technology
Author :
Kolev, Svilen ; Delacressonnière, Bruno ; Gautier, Jean-Luc
Author_Institution :
Equipe Micro Ondes, Ecole Nationale de l´´Electronique et de ses Applications, Cergy, France
fDate :
12/1/2001 12:00:00 AM
Abstract :
An original method to increase the tuning range of a monolithic-microwave integrated-circuit (MMIC) varactor diode is presented in this paper. An active circuit simulating a negative capacitance is connected to the varactor diode. This method allows to increase the varactor´s tuning range more than ten times and to compensate its series resistance at the same time. A MMIC simulating a negative capacitance have been successfully fabricated and measured. To the best of the authors´ knowledge, this is the first realization of a MMIC simulating a negative capacitance
Keywords :
MMIC; active networks; capacitance; circuit tuning; microwave diodes; varactors; MMIC technology; active circuit; negative capacitance; series resistance; tuning range; varactor diode; Capacitance; Circuit optimization; Circuit simulation; Diodes; HEMTs; MMICs; PHEMTs; Tunable circuits and devices; Tuning; Varactors;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
