Murata Manufacturing Co., Ltd.

Victor Company of Japan, Limited

Smk Corporation

Takeshi Okano

Toshiro Hiratsuka

Sadao Yamashita

Atsushi Saitoh

Shingo Okajima

Takeshi Matsuda

Takahiro Baba

Takayuki Takubo

A waveguide corner including a first rectangular waveguide and a second rectangular waveguide. An end face of the second rectangular waveguide is made open to an H-plane wall of the first rectangular waveguide and the H-plane walls of the second rectangular waveguide are disposed along the pipe axis of the first rectangular waveguide. Accordingly, planes of polarization of electromagnetic waves being propagated in the first and second rectangular waveguides are made perpendicular to each other.

Waveguide corner and radio device

A dielectric resonator having a line pattern that includes an electrode gap that defines a signal input/output portion provided on an open side, and a ground portion provided on a short-circuited side. The length L in a main direction of a portion of the line pattern in which the signal input/output portion and the ground portion face each other is smaller than one quarter the wavelength of a resonant signal of the resonator. A variable-capacitance element is connected to the signal input/output portion. One end of the variable-capacitance element has a positive potential and the other end of the variable-capacitance element has a negative potential.

Dielectric resonator, voltage-controlled oscillator, and wireless apparatus

A substantially circular electrodeis arranged on a surfaceA of a dielectric substrateof a TM010-mode resonator. A coupling line, which extends along a diameter of the substantially circular electrode, is arranged on a back surfaceB of the dielectric substrate, and back-surface electrodesare arranged with the coupling lineinterposed therebetween in the width direction. Furthermore, signal linesand ground electrodesare arranged on a surface of an external substratein positions other than portions facing the coupling lineof the TM010-mode resonator. The signal linesare connected to the coupling lineof the TM010-mode resonatorand the ground electrodesis connected to the back-surface electrodes

Dielectric resonance apparatus, oscillation apparatus, and transmission/reception apparatus

A projecting part is formed on the bottom surface of a dielectric substrate and a first conductive layer and a second conductive layer are respectively formed on the top surface and the bottom surface of the dielectric substrate. A plurality of through holes are formed along the left and the right of the projecting part. A coplanar line including a center electrode sandwiched between two grooves is provided on the top surface. Two slots connected to the top end of the coplanar line are formed at a position corresponding to the position of the projecting part, whereby a waveguide formed by the projecting part and the coplanar line are interconnected via the slots.

Transmission line with a projecting dielectric part having an opposing coplanar line and transceiver

A transmission line includes a dielectric substrate having first and second principal surfaces. A first conductive layer is provided on the first principal surface. A protrusion is provided on the second principal surface and a second conductive layer is formed so as to cover the outer surface of the protrusion. A slot is formed in the first principal surface such that the slot extends through the first conductive layer and faces the protrusion. Accordingly, a high-frequency signal does not radiate from the second principal surface and locally transmits with low loss between the bottom surface of the protrusion and the slot.

Transmission line with a dielectric protrusion having opposing longitudinal slot and transmitter-receiver

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.

Transmission line assembly, integrated circuit, and transmitter-receiver apparatus comprising a dielectric waveguide protuding for a dielectric plate

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.

Transmission line, integrated circuit, and transmitter receiver

A connecting apparatus which permits the connection of a connector unit (9) to a connector of external equipment (2) by the actuation of an operating lever (11) only when the external equipment (2) is placed in a mounting recess (6), whereas when no external equipment is placed in the recess (6), associated parts for moving the connector unit (9) do not respond to the actuation of the operating lever (11). Hence, movable terminals of the connector unit (9) will not be exposed to the outside even if the operating lever (11) is actuated inadvertently. The connecting apparatus is provided with a sensor mechanism for sensing the presence of the external equipment (2), and a switching mechanism operatively associated with the sensor mechanism to selectively engage the operating lever (11) with a part (12) for moving the connector unit (9) or disengage them from each other. Only when the presence of the external equipment (2) is detected, the switching mechanism engages the operating lever (11) with the part (12) to connect the connector unit (9) to the connector of the external equipment (2).

Connecting apparatus

A portable television camera is equipped with an additional electronic view finder having an eyepiece arranged to project outside the camera body in a direction perpendicular to a longitudinal center axis of the camera body. The electronic view finder is pivotally mounted on the top of the camera body to be horizontally rotated causing the projecting eyepiece to be positioned above the the top of the camera body when unused. In one a mounting member having two L-shaped arms is employed for the attachment of the electronic view finder, utilizing a threaded hole at the bottom of the camera body which is not originally designed to carry an electronic view finder thereon. The electronic view finder may be used with or without a shouldering aid which can be attached to the bottom of the camera body.

Growing community of inventors

Yokohama, Japan

Takeshi Okano