Abstract:
A waveguide component for use in microwave range or in quasimillimeter wave range such as, for instance, a frequency multiplier or a frequency down converter. The waveguide component comprises a strip line element functioning as an antenna for resonating at least two electromagnetic waves having different frequencies and a semiconductor element of which one end is connected to the strip line. Both the strip line and the semiconductor element are provided onto a dielectric base plate by means of printing circuit technique. The dielectric base plate is mounted in a waveguide in a manner that the strip line element extends parallel to a high frequency electric field in the waveguide. The waveguide component having above construction is able to be miniaturized by the elimination of the conventional tuning circuit elements and due to its improved semiconductor mounting it is suitable to be used in quasi-millimeter wave range.
Abstract:
A composite dielectric resonator having stabilized resonant frequency against the variation of ambient temperature, comprising two kinds of low attenuation dielectric elements each having the temperature coefficient of the dielectric constant in opposite signs. The two dielectric elements are coupled together so that the contact surface is extending substantially parallel to the vector direction of the high frequency electric field. Further improvement of the resonator for obtaining fine adjustment facility is achieved by providing at least an adjustable element, such as a metal post closely arranged to the resonator element for adjusting the electromagnetic energy in the resonator.
Abstract:
A wide band circulator and a non-reciprocating circuit device using such wide band circulator, in which the symmetry of the circulator characteristics is improved by dividing at least one of either the capacitive or inductive elements forming a resonating circuit resonating with a center frequency of the operational band of the circulator and inserted between an outer conductor and ground conductor of the circulator.