TUNABLE MAGNETIC WAVE AMPLIFYING DEVICE

摘要

A magnetic field strengthening device is provided to vary a use band by varying an electrical property of a device for strengthening magnetic field of a specific microwave band. A magnetic field strengthening device includes a variable capacitor(402) and a variable inductor. The variable capacitor is connected between an inner metal plate and an outer metal plate in order to vary a resonant frequency. The variable capacitor is a voltage-controlled varactor or a mechanically-adjustable varactor. The inner metal plate and the outer metal plate are connected through a through hole(403). An interval between the inner metal plate and the outer metal plate is controlled in order to minimize parasitic capacitance. The variable inductor is serially connected to the variable capacitor in order to increase a variable range of the resonant frequency.