Murata Manufacturing Co., Ltd.

Tadashi Sugahara

Hirotsugu Mori

Kengo Onaka

Yoshiki Yamada

Koji Nosaka

Kaoru Sudo

Hiroshi Izumitani

Takaaki Ishii

An antenna module includes first and second dielectric substrates having different normal directions, and first and second radiating elements. The first radiating elements are disposed in the X-axis direction at the first dielectric substrate. The second radiating elements are disposed in the X-axis direction at the second dielectric substrate. The first radiating elements disposed in the X-axis direction are more than the second radiating elements disposed in the X-axis direction. The measurement perpendicular to the X-axis direction of the second dielectric substrate is shorter than the measurement perpendicular to the X-axis direction of the first dielectric substrate. The distance from a second radiating element closest to an end portion in the X-axis direction of the second dielectric substrate to the end portion is longer than the distance from a first radiating element closest to an end portion in the X-axis direction of the first dielectric substrate to the end portion.

Antenna module

An antenna module includes feeding elements arranged adjacent to each other and filters connected to the respective feeding elements. Each of the filters includes a plurality of resonant lines that is not connected to each other. The filters are arranged between the feeding elements so as to cross a virtual line equidistant from the feeding elements when the antenna module is viewed in plan from the normal direction.

Antenna module, communication apparatus including the same, and circuit substrate

A communications apparatus an antenna module include a first substrate on which a first radiation electrode and a first ground electrode are disposed; a second substrate on which a second radiation electrode and a second ground electrode are disposed; a third substrate on which a third ground electrode is disposed; and a first connection member having a flat plate shape and connected between the first substrate and the second substrate, a fourth ground electrode being disposed on the first connection member. A radio frequency signal is transmitted to the first radiation electrode through the first connection member, and a main surface of the first connection member is in contact with a main surface of the third substrate.

Antenna module and communication apparatus equipped with the same

An antenna element includes a dielectric substrate, a radiation electrode, a first ground electrode, a second ground electrode, and a via conductor that connects the first ground electrode and the second ground electrode to each other. The dielectric substrate includes a flat-plate-shaped first part and a second part that is thinner than the first part. The radiation electrode and the first ground electrode are arranged on or in the first part so as to face each other in the thickness direction of the first part. The second ground electrode is spaced apart from the radiation electrode. The second ground electrode is arranged on or in the second part so as to not face the radiation electrode in the thickness direction of the second part. The radiation electrode is capacitively coupled to the second ground electrode and the via conductor.

Antenna element, antenna module, and communication device

In an antenna array of the present disclosure, in a plan view from a direction that is normal to an isolation element, the isolation element is formed between a first antenna element and a second antenna element. A first distance between the first antenna element and a first ground electrode is different from a second distance between the isolation element and the first ground electrode. A third distance between the second antenna element and the first ground electrode is different from the second distance. In a plan view from a direction that is normal to the first antenna element, the isolation element is spaced apart from the first antenna element. In a plan view from a direction that is normal to the second antenna element, the isolation element is spaced apart from the second antenna element.

Antenna array and antenna module

The present disclosure relates to an interposer (), which is a circuit board that has a multilayer structure and that establishes a connection between layers using a via conductor. The interposer () includes first and second transmission lines that are connected in series and a first stub and a second stub that are respectively connected to the first transmission line and the second transmission line. The first and second stubs are formed by wiring lines provided in respective different layers, and a second transmission line (), which connects the first stub to the second stub, includes a via conductor and a wiring line provided in the layer where the second stub () is formed.

Multilayer circuit board comprising serially connected signal lines and stubs disposed in different layers of the multilayer circuit board

A filter () has a first passband and a second passband on a higher frequency side than the first passband and includes a series arm circuit () and a parallel arm circuit (), wherein the parallel arm circuit () includes a parallel arm resonator (p) connected between a node (x) and ground and having a resonant frequency frp located between a first passband and a second passband, an inductor (L) connected between the node (x) and the ground, and an inductor (L) connected between the node (x) and the ground and connected in series to the parallel arm resonator (p), and a circuit in which the parallel arm resonator (p) and the inductor (L) are connected in series is connected in parallel to the inductor (L).

Growing community of inventors

Kyoto, Japan

Tadashi Sugahara