Title :
A Variable Negative-Inductance Integrated Circuit at UHF Frequencies
Author :
White, Carson R. ; May, Jason W. ; Colburn, Joseph S.
Author_Institution :
HRL Labs., LLC, Malibu, CA, USA
Abstract :
A floating variable Negative Impedance Inverter (NIl) circuit is proposed that is derived from Linvill´s unbalanced negative impedance converter. A negative-inductance Integrated Circuit (IC) has been realized using the IBM 8 HP BiCMOS process with an inductance that tunes from -64 to -40 nH. The IC is short-circuit-stable (which has been verified by experiment) and is dc coupled at the terminals, making it directly applicable to susceptance cancellation for slot antennas and artificial magnetic conductors. This letter reports the circuit topology, measurement technique, and measured data.
Keywords :
BiCMOS integrated circuits; UHF frequency convertors; impedance convertors; inductance; slot antennas; BiCMOS process; NIl circuit; UHF frequencies; artificial magnetic conductor; circuit topology; floating variable negative impedance inverter; floating variable negative-inductance integrated circuit; measurement technique; slot antenna; unbalanced negative impedance converter; Circuit stability; Impedance; Inductance; Inductors; Integrated circuit modeling; Stability analysis; Active antennas; active inductors; impedance matching; non-Foster circuits; tunable circuits and devices;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2011.2175718
