Title :
Lossless broad-band monolithic microwave active inductors
Author :
Hara, Shinji ; Tokumitsu, Tsuneo ; Aikawa, Masayoshi
Author_Institution :
ATR Opt. & Radio Commun. Res. Lab., Kyoto, Japan
fDate :
12/1/1989 12:00:00 AM
Abstract :
Lossless broadband microwave active inductors for general-purpose use in microwave circuits are proposed, and their characteristics are discussed. These active inductors are composed of a common-source cascode FET and a feedback FET, and operate in a wide frequency range with very low series resistance. Their low-loss characteristics are demonstrated by simulation and experimental results. A maximum Q factor of 65 is obtained. Theoretically, it can reach infinity. The inductance value can be controlled by an external voltage control
Keywords :
Q-factor; active networks; inductors; solid-state microwave circuits; broad-band monolithic microwave active inductors; common-source cascode FET; external voltage control; feedback FET; inductance value; low-loss characteristics; maximum Q factor; microwave circuits; series resistance; Active inductors; Feedback; Frequency; Inductance; Laboratories; MMICs; Microwave FETs; Resistors; Spirals; Voltage control;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
