Abstract: 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.

Abstract: A planar dielectric integrated circuit is provided such that energy conversion loss between a planar dielectric line and electronic components is small and that impedance matching between them can be easily obtained. A planar dielectric line is provided by causing two slots to oppose each other with a dielectric plate interposed in between, a slot line and line-conversion conductor patterns are provided in the end portions of the planar dielectric line, and an FET is disposed in such a manner as to be extended over the slot line.

Abstract: A mixer used in a millimeter-wave band and a microwave band capable of achieving loss reduction, a radar module, and a communication apparatus incorporating the mixer and having high efficiency. The mixer includes two electrodes formed on one main surface of a dielectric substrate and another electrode formed on another main surface thereof such that non-electrode portions on both main surfaces are opposed to each other via the dielectric substrate. Additionally, a diode is connected bridging a slit between the two electrodes on one main surface to constitute a circuit board. The circuit board and a dielectric strip are arranged between upper and lower conductive plates.

Abstract: An oscillator, a dielectric waveguide device and a transmitter incorporating the same, wherein a special temperature-compensating circuit provides a temperature-compensated device with reduced size and cost, and greater productivity. In the oscillator, a dielectric plate having a strip line of a specified length is arranged between conductive plates which enclose a Gunn diode. The oscillation output signal of the Gunn diode is extracted via the strip line. In addition, the sign of the dielectric-constant temperature coefficient of the dielectric plate is set such that changes in the oscillation frequency caused by changes in temperature of the Gunn diode are suppressed.

Abstract: A high-frequency module which includes a dielectric resonator defined by a dielectric sheet; a pair of electrodes formed on each of the main surfaces of the dielectric sheet and having aligned openings which form a dielectric resonator; a substrate stacked on the sheet; and lines disposed on the substrate for being coupled to the dielectric resonator. At least one of the lines is curved and is disposed just inside the opening and runs substantially along the edges of the openings.

Abstract: An electronic module, comprising: a dielectric base plate having first and second opposing surfaces on which respective electrodes are disposed such that respective areas at the first and second surfaces are free of electrode material and aligned relative to one another to form a dielectric resonator; a first electronic component coupled to the base plate; and a first circuit sheet having first and second opposing surfaces, at least one aperture between the surfaces, and a conductor pattern disposed on the first surface, the first circuit sheet being disposed on the base plate such that: (i) the first electronic component is at least partially received within the aperture; and (ii) at least part of the conductor pattern is coupled to the dielectric resonator.

Abstract: A voltage controlled oscillator, a voltage controlled oscillator device, and a radar device provided therewith which can detect when the oscillation frequency becomes uncontrollable. According to one embodiment, a Gunn or other oscillation device is connected to a main line, and a varactor diode which is a variable reactance element is connected between the main line and a sub line to constitute a voltage controlled oscillator. A control voltage is applied to the varactor diode via a switching circuit, and the presence or absence of oscillation or a failure of the varactor diode or oscillation device is detected by a detection signal, for example, from the varactor diode as monitored by a voltage monitor, and/or from the oscillation device, as monitored by a current sensing device.

Abstract: An oscillation circuit is constructed by providing a line, a Gunn diode, and a dielectric resonator on a dielectric substrate; by disposing a dielectric stripline between upper and lower conductor plates to form an NRD guide which serves as a output transmission line; and the line and the NRD guide are coupled.

Abstract: A high-frequency module which includes a dielectric resonator defined by a dielectric sheet; a pair of electrodes formed on each of the main surfaces of the dielectric sheet and having aligned openings which form a dielectric resonator; a substrate stacked on the sheet; and lines disposed on the substrate for being coupled to the dielectric resonator. At least one of the lines is curved and is disposed just inside the opening and runs substantially along the edges of the openings.

Abstract: A first electrode layer having a first electrodeless portion is formed on the upper surface of a dielectric plate, a second electrode layer having a second electrodeless portion opposing the first electrodeless portion is formed on the lower surface of a second dielectric plate, and electric lines are formed by an intermediate electrode layer formed between the first and second electrode layers.

Abstract: 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.

Abstract: An oscillator wherein deviation in the position of a cap of a package is monitored when removing and replacing the cap to adjust the characteristics of the oscillator, and which has stable characteristics. The oscillator comprises a package, a resonator stored in the package, a circuit board and a member for securing the package, the member for securing being attached to the circuit board and contacting two opposing inside faces of the package.

Abstract: 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.

Abstract: A dielectric resonator allowing size reduction and easy modulation of coupling between adjacent resonating sections and electrodes is provided. A configuration is such that electric conductors 2a and 2b having openings on two main faces of a dielectric substrate 2 are arranged so as to oppose each other. Electrodes 5 and 6 are respectively formed on one main face each of supporting members 3a and 3b, the supporting members 3a and 3b are arranged via spacers 9 so as to oppose each other and so as to be apart from each other with a predetermined spacing in the thickness direction of the dielectric substrate 2 for the dielectric substrate 2, first and second conductor plates 4a and 4b are arranged apart with a predetermined spacing from the supporting members 3a and 3b, and the dielectric substrate positioning between the openings opposing each other is used as a resonating section.

Abstract: A planar dielectric integrated circuit is provided such that energy conversion loss between a planar dielectric line and electronic components is small and that impedance matching between them can be easily obtained. By providing slots which oppose both main surfaces of a circuit substrate, two planar dielectric lines are constructed. A slot line, and a first line-conversion conductor pattern which is connected to the electromagnetic field of the slot line and a first planar dielectric line in order to perform line conversion, are provided at the end portion of the first planar dielectric line, including a slot. A coplanar line and a second line-conversion conductor which is made to project in a direction at right angles to a second planar dielectric line is provided at the end portion of the second planar dielectric line, including a slot. A semiconductor device is placed in such a manner as to be extended over the coplanar line and the slot line.

Abstract: 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.

Abstract: An electronic module, comprising: a dielectric base plate having first and second opposing surfaces on which respective electrodes are disposed such that respective areas at the first and second surfaces are free of electrode material and aligned relative to one another to form a dielectric resonator; a first electronic component coupled to the base plate; and a first circuit sheet having first and second opposing surfaces, at least one aperture between the surfaces, and a conductor pattern disposed on the first surface, the first circuit sheet being disposed on the base plate such that: (i) the first electronic component is at least partially received within the aperture; and (ii) at least part of the conductor pattern is coupled to the dielectric resonator.

Abstract: A dielectric resonator capable of adjusting a resonance frequency, reducing occurrence of a mode jump if it is applied to an oscillator and being manufactured at a low cost. The dielectric resonator has a pair of upper and lower opposing conductive plates; a dielectric substrate disposed between the conductive plates; a first electrode formed on one surface of the dielectric substrate, the first electrode having a first opening; a second electrode formed on another surface of the dielectric substrate, the second electrode having a second opening corresponding to the first opening so that a resonator is formed by a portion of the dielectric substrate disposed between the first and second openings; and a variable capacitor located in a portion of the dielectric substrate in which an applied electromagnetic field is confined in and around the resonator.

Abstract: 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.

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.