Murata Manufacturing Co., Ltd.

Shinya Oguri

Wataru Tamura

Takahiro Baba

Masato Koike

Isamu Morita

Fumie Matsuda

Kuniaki Yosui

Katsumi Fujimoto

Yuya Dokai

Jun Tabota

Yuki Ito

Kanto Iida

Haruyoshi Kurakawa

Tomohiko Kiyohara

An electronic device includes a transmission line and a circuit board. The transmission line includes a signal conductor, a base material, a first external connection conductor, a second external connection conductor, and a ground conductor, and defines a stripline. The circuit board includes a first mounting land conductor, a second mounting land conductor, and a radiation reduction conductor. The first mounting land conductor and the second mounting land conductor are provided in a concave portion on the surface of the circuit board, and are respectively connected to the first external connection conductor and the second external connection conductor. The radiation reduction conductor is provided on the lateral surface of the concave portion in which the transmission line is disposed, and is in contact with or adjacent to the first lateral surface and the second lateral surface of the base material.

Electronic device

A multilayer board includes a flexible base material including laminated insulator layers and curved along an X-axis direction on a plane orthogonal or substantially orthogonal to a lamination direction, an interlayer connection conductor on the flexible base material, and a notch pair on the flexible base material at positions symmetrical or substantially symmetrical in the X-axis direction with respect to a position of the interlayer connection conductor, the notch pair extending in a Y-axis direction orthogonal or substantially orthogonal to the X-axis direction on the plane. The interlayer connection conductor is within a region defined by the notch pair and lines respectively joining ends of the notch pair in the Y-axis direction. A radius of curvature of a region of the flexible base material between the notch pair in the X-axis direction being greater than curvature radii of regions outside of the notch pair.

Multilayer substrate

An antenna module includes a resin multilayer substrate including a plurality of base materials that are flexible. The resin multilayer substrate includes a rigid portion at which a first number of stacked layers of the base materials is relatively large and a flexible portion at which a second number of stacked layers of the base materials is relatively small. A radiating element including a conductor pattern is provided at the rigid portion. A transmission line including a conductor pattern and electrically connected to the radiating element is provided at the flexible portion. A frame-shaped conductor that surrounds the radiating element when viewed in a direction in which the base materials are stacked is provided at either the rigid portion or the flexible portion, or both the rigid portion and the flexible portion.

Antenna module and electronic device

A tuning fork-type vibrator includes a tuning fork-type vibrating body including a base and legs. The tuning fork-type vibrating body includes two piezoelectric substrates, an intermediate electrode, surface electrodes and an entire-surface electrode that are laminated together. The surface electrodes are separated by separating portions extending from the base to each of the legs. The widths of the separating portions at a point of connection to the circuit board are wider than those of the separating portions at other points. The separating portions are formed by dividing an electrode provided on the entire surface of a piezoelectric substrate in the vibrating body with a dicer or by laser radiation or etching.

Tuning fork-type vibrator, tuning fork-type vibrator manufacturing method, and angular velocity sensor

A vibrating gyroscope includes a tuning-fork vibrator having a base and legs. The vibrator is joined to a support plate by conductive adhesive members. The support plate includes an outer frame portion in which a joining portion is provided at a location near a longitudinal end of the outer frame portion. The joining portion is supported by a first support portion in the air gap portion. The width of the first support portion is less than the width of the joining portion. The vibrator is joined to the joining portion of the support plate.

Vibrating gyroscope

Growing community of inventors

Nagaokakyo, Japan

Shinya Oguri