Patent ID: 8405466
Filing Date: 2013-03-26
Classification: H03H

Abstract:
1. A low frequency wideband impedance tuner comprising: a cylindrical transmission line, said cylinder being metallic, and said cylinder having a longitudinal axis; a dielectric layer on one surface of said cylinder; at least one wire extending radially from said cylinder to a first sliding contact; said first sliding contact being an electrical contact with a second sliding contact, said second sliding contact being in contact with an outside conductor of a transmission line; said cylinder, said wire and said first sliding contact being mounted to rotate around said axis; a linear phase shifter; said cylinder being a ground plane when in operation for said linear phase shifter, said linear phase shifter being mounted to be in operative electrical communication with said cylinder; a variable capacitor in operative electrical contact with said linear phase shifter and with said outside conductor of the transmission line; said variable capacitor and said linear phase shifter thereby being disposed to vary an impedance to a transmission signal.