Comotech Corporation

Jae We An

Young Geun Yoo

Myoung Yeul Park

Dong Jin Jo

Disclosed are a waveguide type signal attenuator for attenuating an input signal as desired and a waveguide type signal terminator for making an input signal be utterly disappeared, where a manufacturing-easy resistor sheet is inserted into the center area, along which a traveling electromagnetic wave has the maximum intensity, of the signal attenuator and the signal terminator. In the signal terminator and the signal attenuator, a predetermined part of the waveguide which is formed in a lower conductive plate is expanded out along the half-height plane of the waveguide to form a resistor sheet setting groove and a portion of the elongated cavity positioned behind the resistor sheet setting groove forms a lower half of the waveguide. In addition, a resistor sheet is inserted between the resistor sheet setting groove and a protrusion part which protrudes from an upper conductive plate, of the half-height of the waveguide holds the resistor sheet to form an upper half portion of the waveguide. That is, the resistor sheet installed in the center area of the waveguide can give the desired attenuation or termination of an input signal.

Waveguide type signal terminator and signal attenuator

A non-radiative dielectric (NRD) waveguide modulator is provided having a waveguide type hybrid coupler, in which by forming a waveguide type 180&#xb0; hybrid coupler and waveguide as a single body, the structure is simplified and manufacturing processes are reduced. The NRD waveguide modulator includes a conducting housing having a lower conducting plate and an upper conducting plate; a hybrid coupler which is processed in the form of conduit lines inside the conducting housing and includes a ring portion and a plurality of waveguides extended from the ring portion in the radial direction, in modulator, and a termination which is connected to an isolation port that is an end of any one waveguide of the hybrid coupler and terminates a signal reflected by the modulator by consuming the signal internally.

Growing community of inventors

Ulsan-si, South Korea

Jae We An