Mitsubishi Electric Corporation

Yoshiaki Irifune

Yudai Yoneoka

Takashi Miyasaka

Norihiko Akashi

Hiroyuki Ono

Nobuyuki Haruna

Daisuke Koyama

Satoshi Ohdaira

Hiroshi Mihara

Shimpei Kasahara

A printed board including an external interface, a frame ground trace electrically connected to the external interface, a circuit member spaced from the frame ground trace, and a resonance trace disposed between the frame ground trace and the circuit member with a gap present between the resonance trace and the frame ground trace. The resonance trace is connected to the circuit member at at least two positions. The resonance trace and the circuit member together form a loop member configured in the form of a closed circuit of the resonance trace and the circuit member.

Printed board

A printed circuit substrate includes a circuit unit, a first main frame ground interconnection, a first sub frame ground interconnection spaced away from the first main frame ground interconnection in a first direction, and a first conductive via connecting the first main frame ground interconnection and the first sub frame ground interconnection to each other. In plan view from the first direction, a second outer periphery of the first sub frame ground interconnection is surrounded by a first outer periphery of the first main frame ground interconnection. Thus, a printed circuit substrate that can prevent the circuit unit from malfunctioning can be provided.

Printed circuit substrate

Growing community of inventors

Chiyoda-ku, Japan

Yoshiaki Irifune