Patent ID: 6163238
Filing Date: 2000-12-19
Classification: H01F,H03J

Abstract:
An RF variable inductance network comprising:a plurality of inductor cores;a plurality of coaxial cables, each including an inner conductor, an outer conductor and an insulator separating the inner and outer conductors, said plurality of coaxial cables being disposed in a parallel configuration with one another with said outer conductors being in electrical contact with one another, said coaxial cables being wound around said plurality of inductor cores serially, thereby forming separate serial inductances;RF means for coupling RF energy to said outer conductors;and respective ones of said coaxial cables being terminated at a predetermined position in relation to respective ones of said cores; andswitching means for selectively shorting across the wound inductor cores in response to control signals conducted by the inner conductors of the terminated coaxial cables by connecting the respective outer conductors of the terminated coaxial cables to an outer conductor of a coaxial cable located across the respective inductor core from the terminated coaxial cable.