摘要:
In a transmission line assembly, a dielectric plate has a continuous protruding portion on at least one of the surfaces thereof so as to form a convex section, electrodes are formed on both of the surfaces of the dielectric plate including the outer surface of the protruding portion, and a plurality of through holes, each electrically interconnecting the electrodes formed on both of the surfaces of the dielectric plate, is arrayed on each side along the protruding portion. Accordingly, the space surrounded by the electrodes and the arrayed through holes operates as a transmission line in a mode equivalent to TE10 mode.
摘要:
A band elimination filter which includes at least one or more TM-mode dielectric resonators each including a ceramic casing with an electrically conductive film formed over its inner surface or outer surface, and a dielectric column disposed in a cavity in the ceramic casing, and an electrode provided on the ceramic casing, out of contact with the electrically conductive film, with transmission lines being connected to the electrode.
摘要:
In a transmission line, protrusions extend in line one after another in a direction perpendicular to the cross section in a part of a dielectric substrate, with a discontinuous portion therebetween. A lower-surface electrode is formed on a main surface of the dielectric substrate provided with the protrusions and on the outer surfaces of the protrusions. An upper-surface electrode is formed on substantially the whole area of the surface opposite to the lower-surface electrode. Further, a plurality of through-holes for connecting the lower-surface electrode and the upper-surface electrode, which are formed on both surfaces of the dielectric substrate, are aligned on both sides of the protrusions along the direction in which the protrusions extend. Also, coplanar lines and a circuit element are mounted on the upper-surface electrode. The coplanar lines are coupled at a predetermined position to a transmission path formed by the protrusions.
摘要:
A dielectric filter includes a single block made of dielectric material having three or more through holes in which an inner conductor is deposited to define three or more dielectric resonators coupled in a cascade manner. A reactance coupling arrangement is provided for coupling two spaced dielectric resonators with at least one dielectric resonator between them being skipped. By selecting the value of the reactance coupling arrangement, it is possible to provide a filter having a frequency characteristic in a desired format, including at least one pole at a selected point in an attenuation region thereof, without any increase in the number of stages of the dielectric resonators.
摘要:
An oscillator comprises a dielectric resonator, a circuit board, and an adjustment mechanism for adjusting the relative positional relationship between the dielectric resonator and the circuit board; the dielectric resonator having a dielectric substrate, electrodes provided on two opposite faces of the dielectric substrate, and electrode removal portions provided at predetermined positions on the electrodes; and the adjustment mechanism comprising screws and springs for moving the dielectric resonator.
摘要:
Electrodes are formed on respective two main surfaces of a dielectric sheet wherein each electrode has an opening formed at a location corresponding to the location of the opening formed in the other electrode. The part defined by the openings serves as a dielectric resonator. Coupling lines are formed directly in the electrode opening. Transmission lines are formed on a circuit board. The coupling lines and the corresponding transmission lines are connected to each other via bonding wires. This structure makes it possible to minimize the external Q of a resonant circuit using the dielectric resonator. If an oscillator is produced using this resonant circuit, it is possible to achieve a large frequency modulation with and large output.
摘要:
A dielectric substrate is provided on both its main surfaces with conductors each having two circular openings such that the openings on both main surfaces oppose each other. On one conductor of the dielectric substrate, an insulating layer is formed. On the insulating layer, an input electrode and an output electrode are formed. Electrically conductive plates are disposed and secured such that they sandwich the dielectric substrate with gaps therebetween.
摘要:
An amplifying circuit is formed by a combination of a dielectric line waveguide and a semiconductor device. Two electrically conductive plates are provided substantially parallel to each other. Two dielectric strips are disposed between the two conductive plates, and a dielectric plate is further inserted between the dielectric strips. Ground conductors are formed on the dielectric plate. The ground conductors have an area which equals an amount required for blocking a RF signal propagating in the dielectric line waveguide. A slot line is formed between the ground conductors in a position intermediate opposed sides of the dielectric strips. Line-switching conductor patterns are provided at both sides of the ends of the slot line. A field-effect transistor is mounted on the slot line such that it bridges over the slot line. Accordingly, losses and distortion of an RF signal, which would occur in an input/output circuit, are suppressed, and the generation of parasitic coupling is eliminated. Further, the dielectric line waveguide is miniaturized free from an external circuit, and accordingly, the manufacturing cost is reduced as well.
摘要:
The ease of mounting a circuit board on a nonradiative dielectric line is improved, the degree of freedom of conductor film patterns formed on the circuit board is increased, and the degree of integration can be easily increased to fit within a small size. Dielectric strips are provided between the two conductor plates positioned in parallel to each other, and a circuit board is positioned parallel to the conductor plates. The conductor patterns on the circuit board and the transmission waves of the nonradiative dielectric line are electromagnetically coupled to each other.
摘要:
A drain electrode and a source electrode are provided for an intrinsic device section on a GaAs substrate with a gate electrode placed therebetween. Almost all or substantial parts of the GaAs substrate is covered by an extending source electrode extending from the source electrode. A belt-shaped extending drain electrode is provided on the extending source electrode with a dielectric layer placed therebetween, and thereby an output-side microstripline is formed. A belt-shaped extending gate electrode is also provided on the extending source electrode with a dielectric layer placed therebetween, and thereby an input-side microstripline is formed.