Patent ID: 6987434
Filing Date: 2006-01-17
Classification: H01P

Abstract:
1. A non-radiative dielectric (NRD) waveguide modulator comprising: a conducting housing which comprises a lower conducting plate and an upper conducting plate combined with the lower conducting plate; a hybrid coupler which is disposed inside the conducting housing and is formed in a structure in which a plurality of waveguides processed as conduit-shape cavities are connected to the outer surface of a ring portion processed as a ring-shape cavity, the plurality of waveguides having a predetermined phase difference and being extended in a radial direction, wherein a local oscillation signal input through any one of the plurality of waveguides is distributed to at least two waveguides and propagated; a modulator in which a dielectric line, which includes a diode mount on which a Schottky diode is mounted, is solidly disposed inside a modulator cavity inside the conducting housing, and the dielectric line is connected to any one waveguide of the hybrid coupler, and which modulates a local oscillation signal input through the dielectric line by using the Schottky diode and outputs the modulated signal to the outside; and a termination which is connected to an end of any one waveguide terminating the local oscillation signal, among the plurality of waveguides of the hybrid coupler, and terminates a signal reflected by the modulator by consuming the signal internally.