Patent ID: 6130587
Filing Date: 2000-10-10
Classification: H01P

Abstract:
A stripline isolator/circulator, comprising:an upper ferrite substrate;a lower ferrite substrate;an upper grounded electrode being positioned on the upper ferrite substrate and having an upper permanent magnet inside and four screws penetrated therethrough;a lower grounded electrode being positioned on the lower ferrite substrate and having a lower permanent magnet inside and said four screws penetrated therethrough;an upper cover which shields the magnetic field;SMA connectors which connect external circuits with striplines; anda load resistance connected to one of said SMA connectors;wherein a stripline positioned between said upper ferrite substrate and lower ferrite substrate comprises:first through third magnetic wall coupling controlling slots which form a 3-way asymmetric propeller resonator which controls a magnetic coupling of the verge of said resonator to control the frequency and which transfers a signal in a single direction in which said magnetic wall coupling controlling slots are provided,first through third bandwidth controlling transmission lines each of which control the bandwidth by use of a ratio of length of the transmission line, being formed in one side of the respective magnetic wall coupling controlling slots as one body, andfirst through a third terminal electrodes each of which connects one of said bandwidth controlling transmission lines with an external circuit to transmit the signal as one body.