Kyocera Corporation

Kazuki Hayata

Yuji Kishida

Nobuki Hiramatsu

Hiroshi Uchimura

Djuniadi Arifin Sagala

Yoshiko Oya

Takeshi Okamura

Akinori Sato

Yoshitake Terashi

Takeshi Takenoshita

Hironori Kii

Kazumi Nakazuru

Kazuhiro Matsui

Yoshihiro Sakamoto

Hajime Sasaki

Kentaro Miyazato

An antenna includes a first conductor. The first conductor includes a shaft-shaped part and a plurality of flange-shaped projecting parts projecting from the shaft-shaped part to directions crossing an axial direction of the shaft-shaped part.

Antenna, module substrate, and module

A waveguide structure according to one embodiment includes an upper waveguide and a mode conversion portion. The upper waveguide internally transmits a high frequency signal in TE10 mode along a first direction. The mode conversion portion is configured to electromagnetically couple with the upper waveguide. The mode conversion portion converts the high frequency signal propagating through the upper waveguide from TE10 mode to TM11 mode. The mode conversion portion transmits the high frequency signal converted in a second direction perpendicular to the first direction. According to the waveguide structure pursuant to the embodiment, it is possible to attain excellent transmission characteristics of high frequency signals.

Waveguide structure, high frequency module including waveguide structure, and radar apparatus

A high-frequency module includes a high-frequency component including a high-frequency circuit, a conductor plate including a slot, a first conductive wire, and two second conductive wires. The high-frequency component includes a signal terminal and two reference potential terminals. The signal terminal is used for at least one of input and output of a high-frequency signal. The two reference potential terminals are connected to a reference potential. The first conductive wire is connected to the signal terminal in terms of high-frequency. The first conductive wire crosses over above the slot. The two second conductive wires are connected to the two reference potential terminals in terms of high-frequency. The two second conductive wires are so disposed along the first conductive wire and do not cross over the slot. The first conductive wire and the two second conductive wires form a pair and are electromagnetically coupled to the slot.

High-frequency module including a conductor with a slot therein and a conductive wire crossing over the slot and physically contacting the conductor

A circuit board is provided. The circuit board includes a substrate, a waveguide line and a laminated waveguide. The waveguide line is at least partially positioned on a first surface of the substrate. The waveguide line transmits a high frequency signal. The laminated waveguide is formed inside the substrate. The laminated waveguide is electromagnetically coupled to the waveguide line, and has a lead-out portion led out from inside the substrate to a surface other than the first surface. The laminated waveguide includes a dielectric layer, a pair of main conductive layers and a through conductor group. The pair of main conductive layers sandwiches the dielectric layer in a thickness direction thereof. In the through conductor group, a plurality of through conductors are arranged along a high frequency signal transmitting direction. The plurality of through conductors electrically connect the pair of main conductive layers.

Circuit board, high frequency module, and radar apparatus

A high-frequency module according to the present embodiment includes a substrate, a circuit board, and a waveguide. The substrate has an input-output portion for high-frequency signals on one surface thereof. The circuit board has a dielectric waveguide line with its end face exposed, and is placed on the one surface of the substrate such that a virtual plane extending beyond the end face is intersected by the one surface of the substrate. The waveguide has openings at ends thereof, in which one of the openings is connected to the end face of the dielectric waveguide line, and the other opening is connected to the input-output portion of the substrate.

High-frequency module and method of manufacturing the same, and transmitter, receiver, transceiver, and radar apparatus comprising the high-frequency module

A high-frequency module according to the present embodiment includes a substrate, a circuit board, and a resonator. The substrate has an input-output portion for high-frequency signals formed on one surface thereof. The circuit board includes a dielectric waveguide line with its end face exposed, and is placed on the one surface of the substrate such that a virtual plane extending beyond the end face is intersected by the one surface of the substrate. The resonator includes input-output end portions for high-frequency signals at ends thereof, in which one of the input-output end portions is connected to the end face of the dielectric waveguide line, and the other thereof is connected to the input-output portion of the substrate.

The invention relates to a direct-current blocking circuit, and a hybrid circuit device, a transmitter, a receiver, a transmitter-receiver and a radar device that have the direct-current blocking circuit. A dielectric substrate () is provided with a conductor layer () disposed parallel with the dielectric substrate (), first and second planar lines () each containing a part of the conductor layer (), and a waveguide () containing a part of the conductor layer (). The first and second planar lines () are located on one surface () side of the dielectric substrate () with respect to the conductor layer (), and the waveguide () is located on another surface () side of the dielectric substrate (). In a transmission direction (X) of electric signals, as to the waveguide (), its one end overlaps with one end of the first planar line (), and its another end overlaps with one end of the second planar line (). In the overlapped regions, first and second through-holes () are so formed as to penetrate the conductor layer () in its thickness direction.

Direct-current blocking circuit, hybrid circuit device, transmitter, receiver, transmitter-receiver, and radar device

The invention relates to a high-frequency circuit board that can efficiently radiate heat generated in a mounted electronic component without reducing the degree of freedom in design, a high-frequency circuit module including the high-frequency circuit board, and a radar apparatus including the high-frequency circuit module. A dielectric substrate () includes a mounting portion () that is disposed on one surface () of the dielectric substrate () and on which an electronic component () is to be mounted, and a waveguide () that is formed in the dielectric substrate (). The mounting portion () and the waveguide () are connected with each other through a heat conductor () having a thermal conductivity higher than that of the dielectric substrate ().

High-frequency circuit board, high-frequency circuit module, and radar apparatus

The invention relates to a high-frequency transmission line connection structure, a circuit board having the connection structure, a high-frequency module having the circuit board, and a radar apparatus. A first laminated waveguide sub-line part () includes a pair of main conductor layers that oppose each other in a thickness direction with a dielectric layer () having the same thickness as a dielectric layer () of a microstrip line () interposed therebetween. A second laminated waveguide sub-line part () includes dielectric layers () thicker than the dielectric layer of the first laminated waveguide sub-line part (). A laminated waveguide main-line part () includes dielectric layers () thicker than the dielectric layers of the second laminated waveguide sub-line part (). A conversion part () connected to the microstrip line () is formed by integrating with an upper main conductor layer constituting the respective line parts.

High-frequency transmission line connection structure, circuit board, high-frequency module, and radar device

A millimeter-wave transmitter-receiver uses an NRD guide as a fundamental configuration and includes a millimeter-wave signal oscillator, a pulse modulator, a circulator, an antenna and a mixer. In the millimeter-wave transmitter-receiver, a line length of a third dielectric guide is set so that &#x3b4;=&#xb1;&#x3c0; in which &#x3b4; is a phase difference at a center frequency between a portion of a transmission millimeter-wave signal, which is reflected via a third dielectric guide on the leading end portion of the third dielectric guide and returned to leak to a third connecting portion of the circulator, and another portion of the millimeter-wave signal, which leaks from a first connecting portion to the third connecting portion of the circulator. It is possible to reduce the change in the mixer output and enhance the millimeter-wave transmission/reception performance.

Transmitting/receiving antenna, isolator, high-frequency oscillator, and high-frequency transmitter-receiver using the same

Provided is a millimeter-wave transmitting/receiving apparatus of pulse-modulation type in which pulse-modulated millimeter-wave signals for transmission are prevented from being outputted to a reception system due to inner reflection or other causes. Included are: an NRD guide (basic structure) formed of a dielectric line sandwiched between parallel plate conductors; a millimeter-wave signal oscillator; a pulse modulator; a circulator; a transmitting/receiving antenna; and a mixer. At the output end of the mixer is disposed a switching device which interrupts intermediate-frequency signals in an opened state, and, when a millimeter-wave signal for transmission from the pulse modulator enters a non-output state and the condition is stabilized, changes into a closed state to pass intermediate-frequency signals. The intermediate-frequency signal containing noise resulting from the millimeter-wave signal for transmission entering the mixer can be prevented from leaking toward downstream side of the mixer; wherefore a desired intermediate-frequency signal can be outputted.

High-frequency transmitting/receiving apparatus, radar system having the same, and vehicle and small boat equipped with the radar system

A high-frequency oscillator that can tune oscillation characteristics is provided. A high-frequency oscillator includes a Gunn diode serving as a high-frequency oscillation element that generates high-frequency signals, a resonator connected to the Gunn diode, a varactor diode serving as a variable-capacitance element that is disposed on the resonator and changes a resonance frequency, and a bias supply circuit that is connected to the varactor diode and supplies a bias voltage applied in order to change a capacitance. The bias supply circuit includes a trimmable chip resistor serving as a pre-set variable resistor that regulates a bias voltage applied to the varactor diode. By regulating the resistance value of the trimmable chip resistor, it is possible to control the capacitance value of the varactor diode and tune oscillation characteristics to a desired state.

High-frequency oscillator, high-frequency transmission-reception apparatus using the same, radar apparatus, and radar-apparatus-equipped vehicle and small boat equipped with the same

It is an object of the invention to provide a connection structure for connecting the dielectric strip of an NRD guide with a metal waveguide, in which the conversion loss (connection loss) for high-frequency signals is reduced, and in which the NRD guide as well as the millimeter wave integrated circuit in which the NRD guide is incorporated can be made smaller. A non-radiative dielectric waveguide is made by arranging a dielectric strip for propagating high-frequency signals between parallel planar conductors arranged at a spacing of not more than half the wavelength of a high-frequency signal, a conductive member being arranged at an end face of a terminal end of the dielectric strip. An aperture is formed in at least one of the parallel planar conductors at a location where the electrical field of an LSM mode stationary wave propagating along the dielectric strip becomes largest. An open terminal end of a metal waveguide is connected to this aperture.

Structure for connecting non-radiative dielectric waveguide and metal waveguide, millimeter wave transmitting/receiving module and millimeter wave transmitter/receiver

A NRD guide includes a pair of parallel plate conductors opposed to each other at a spacing equal to or shorter than half the wavelength of a high-frequency signal to be transmitted and having opposing inner surfaces whose arithmetic average roughness Ra satisfies 0.1 &mgr;m&lE;Ra&lE;50 &mgr;m, and a dielectric strip arranged between the pair of parallel plate conductors and held in contact with the respective inner surfaces of the parallel plate conductors. The dielectric strip is strongly secured to the inner surfaces to exhibit an excellent durability. The transmission loss of the high-frequency signal can be effectively suppressed.

Growing community of inventors

Soraku-gun, Japan

Kazuki Hayata