Abstract:
A multi-layer thin-film electrode comprises thin conductor films and thin dielectric films each being alternately laminated on a dielectric substrate, in which an electro-magnetic field generated in the dielectric substrate and that generated in each of the thin dielectric films have substantially the same phase at a predetermined frequency. According to the multi-layer thin-film electrode of the present invention, adhesive conductor films that more readily form metallic oxide as compared with the thin conductor films are provided between the dielectric substrate and the thin conductor films adjacent thereto and between each of the thin conductor films and the thin dielectric film adjacent thereto, respectively, and an increase in the surface reactance of the thin conductor films caused by the adhesive conductor film formation is canceled by correcting the thickness of each of the thin dielectric films based on the dielectric constant of the thin dielectric film and the dielectric substrate and the thickness of at least one of the adhesive conductor films.
Abstract:
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.
Abstract:
A guide marker includes a substrate and a radio-wave reflecting unit for reflecting radio waves at certain intensity in all directions in a virtual plane, including the incident direction of the radio waves, the radio-wave reflecting unit being provided in the surface of the substrate. The radio-wave reflecting unit includes a concave and convex portions provided in the substrate or radio-wave reflectors which resonate at the frequency of incident radio waves and which reflect the radio waves in the incident direction. The radio-wave reflectors are mounted on the substrate. A visual guide marker device includes one of a light-reflecting component having a reflection characteristic and a light-generating component which self-generates light, and a guide marker including a dielectric material.
Abstract:
A dielectric resonator includes a slot line constructed by providing a slot electrode having a spiral slot at either an external face of a dielectric layer or inside the dielectric layer and a shielding conductor provided at a predetermined distance from the slot electrode. The slot line is employed as a resonant line so as to provide a dielectric resonator, an inductor, a capacitor, a dielectric filter, an oscillator, and/or a communication device.
Abstract:
In a complex circuit board, the positional relationships between element portions, including an electrode pattern, a dielectric substrate and a magnetic substrate, can be adjusted as desired, and the complex circuit board can be miniaturized. The complex circuit board includes a dielectric substrate and a magnetic substrate, a space being provided between the magnetic substrate and the dielectric substrate, and an electrode pattern provided between the dielectric substrate and the magnetic substrate, a capacitance element portion of the electrode pattern being provided adjacent or in contact with or spaced a predetermined distance from the dielectric substrate, and the inductance element portion of the electrode pattern being provided adjacent or in contact with or spaced a predetermined distance from the magnetic substrate.
Abstract:
A dielectric resonator comprises electrodes formed on both the main surfaces of a dielectric substrate and a thin film multi-layer electrode of thin film conductor layers and thin film dielectric layers having fixed thickness alternately laminated which constitutes at least one of the electrodes, and is characterized in that by giving abrasive treatment or etching treatment to the external portion of the dielectric substrate and the external portion of the electrodes formed on both the main surfaces of the dielectric substrate the end portions of the electrode is made in an electrically open-circuited condition. In this way, a dielectric resonator making effective use of the characteristic of low loss of the thin film multi-layer electrode is presented.
Abstract:
A dielectric resonator designed so that there is substantially no loss in a conductor on the surface of a casing forming a shielded cavity, and so that the unloaded Q and the resonant frequency can be changed independently of each other. A cylindrical dielectric block having a pair of electrodes formed respectively on its two opposite surfaces is disposed in a metallic shielded-cavity casing so that one of the electrodes is in contact with an inner bottom surface of the shielded-cavity casing. This electrode is electrically connected to the shielded-cavity casing by soldering or the like. Input/output connectors are coupled to the other electrode on the cylindrical dielectric block.
Abstract:
A small and inexpensive planar dielectric line that can be easily connected to electronic parts, such as ICs, and has smaller conduction losses. The planar dielectric line includes a dielectric substrate having first and second surfaces opposedly facing each other. A first slot having a predetermined width is interposed between first and second electrodes on the first surface of the dielectric substrate. A second slot having the same width as the first slot is disposed between third and fourth electrodes on the second surface of the dielectric substrate. The first and second slots opposedly face each other. The permittivity and the thickness of the dielectric substrate are determined so that a planar electromagnetic wave can propagate in a propagation region of the substrate interposed between the first and second slots while being substantially totally reflected on the first surface of the substrate adjacent to the first slot and the second surface of the substrate near the second slot. When the permittivity and the thickness of the dielectric substrate are determined to meet the following conditions, 80% or more of the total electric field energy is confined within a region which is small enough to substantially eliminate interference with an adjacent line:(relative permittivity of dielectric substrate).gtoreq.10 (thickness "t" of dielectric substrate).gtoreq.0.3 mm. When the relative permittivity is at least 18, 90% or more of the total electric field energy is confined.
Abstract:
An intrinsic device section is provided by laminating a drain area, an intermediate area, and a source area above a GaAs substrate and by forming a channel area at one oblique surface thereof. A drain electrode ohmic connected to the drain area extends toward the output side, a source electrode ohmic connected to the source area extends above the drain electrode with a dielectric layer placed therebetween, and thereby an output micro-wave transmission line is formed. A gate electrode Schottky connected to the channel area extends toward the input side, the source electrode extends above the drain electrode with the dielectric layer placed therebetween, and thereby an input micro-wave transmission line formed.
Abstract:
On two active areas formed in a semiconductor substrate, source electrodes, gate electrodes, and drain electrodes are disposed symmetrically to each other. A gate pad section electrically connected to both gate electrodes is disposed at one side of the active areas, and a drain pad section electrically connected to both drain electrodes is disposed at the other side of the active areas. A source pad section electrically connected to one source electrode is disposed at one side of the gate pad section and the drain pad section, and a source pad section electrically connected to the other source electrode is disposed at the other side of the gate pad section and the drain pad section. An input slot line is formed between the gate pad section and the source pad sections, and an output slot line is formed between the drain pad section and the source pad sections.