Murata Manufacturing Co., Ltd.

Shou Matsumoto

Takanori Uejima

Yutaka Sasaki

Naoya Matsumoto

Yuji Takematsu

Yuuki Fukuda

Motoji Tsuda

Tetsuro Harada

Kenji Tahara

Dai Nakagawa

Isao Takenaka

Katsunari Nakazawa

Masahide Takebe

A radio frequency module includes a power amplification element, a transmission filter, and a transmission matching element, which are transmission-only components for processing only a transmission signal, a low noise amplification element, a reception filter, and a reception matching element, which are reception-only components for processing only a reception signal, an antenna switch, which is a transmission-reception dual-use component for processing both a transmission signal and a reception signal, and a first module board and a second module board, which are arranged to face each other. The transmission-only components are mounted on a main surface of the first module board, and the reception-only components and the transmission-reception dual-use component are mounted on respective main surfaces of the second module board.

Radio frequency module

A filter allows a transmission signal in a predetermined frequency band to pass from a second input-output terminal to a first input-output terminal and allows a reception signal in the predetermined frequency band to pass from the first input-output terminal to the second input-output terminal. A first common terminal of a first switch is connected to the second input-output terminal. A second terminal and a first terminal of the first switch are exclusively connectable to the first common terminal. A second common terminal of a second switch is connected to a ground terminal of the filter. A second selection terminal and a first selection terminal of the second switch are exclusively connected to the second common terminal. Of the first selection terminal and the second selection terminal, only the first selection terminal is connected to a ground with a reactive element interposed therebetween.

Radio frequency circuit, radio frequency module, and communication device

A high-frequency module includes a mounting substrate having main surfacesanda first circuit component mounted on the main surfacea second circuit component mounted on the main surfacean external connection terminal arranged on the main surfaceside relative to the main surfacewith respect to the mounting substrate, a long via conductor connected to the first circuit component, passing through the mounting substrate, and having a substantially long shape when the mounting substrate is viewed in a plan view, and a metal block arranged on the main surfaceside relative to the main surfacewith respect to the mounting substrate and connecting the long via conductor and the external connection terminal. When the mounting substrate is viewed in a plan view, the first circuit component overlaps the long via conductor and the metal block overlaps the long via conductor.

High-frequency module and communication apparatus

Isolation characteristics of a directional coupler are improved. A high-frequency module () includes a substrate () and a directional coupler () provided on the substrate (). The directional coupler () includes a main line (), a sub line (), and an impedance adjustment portion (). The sub line () is electromagnetically coupled to the main line (). The impedance adjustment portion () is provided in the sub line (), and adjusts impedance of the directional coupler (). The impedance adjustment portion () is electrically connected to an inductor of the substrate ().

High-frequency module

A radio-frequency module includes: a transmitting circuit disposed on a mounting substrate to process a radio-frequency signal input from a transmission terminal and to output a resultant signal to a common terminal; a receiving circuit disposed on the mounting substrate to process a radio-frequency signal input from the common terminal and to output a resultant signal to a reception terminal; a first inductor included in a first transmitting circuit; and a bonding wire connected to the ground and bridging over the first inductor.

Radio-frequency module and communication device

A filter circuit includes a first switch circuit that exclusively connects a first common terminal to either of a first selection terminal and a second selection terminal; a first signal terminal that is connected to the first selection terminal and that is for communicating a first communication signal belonging to a first frequency range, which is a frequency range of a first communication band; a second signal terminal that is connected to the second selection terminal and that is for communicating a second communication signal belonging to a second frequency range, which is the frequency range of a second communication band and which is at least partially overlapped with the first frequency range; and a first band pass filter one end of which is connected to the first common terminal and which uses both the first frequency range and the second frequency range as pass bands.

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Kyoto, Japan

Shou Matsumoto