Western Digital Technologies, Inc.

Nhk Spring Co., Ltd.

Tomohisa Okada

Hajime Arai

Nobumasa Nishiyama

Kazuhiro Nagaoka

Futa Sasaki

A test coupon includes a pseudo element circuit which is constituted of a main circuit section and an adjusting section. The main circuit section includes a first pattern conductor and second pattern conductors. The first pattern conductor and the second pattern conductors overlap one another with a dielectric layer interposed therebetween. The first pattern conductor electrically conducts to the second pattern conductors. The main circuit section represents the R-component and the L-component of an equivalent circuit, and is a dominant circuit element which determines a signal waveform. The adjusting section includes linear conductors. A peak of a voltage waveform is suppressed by the R- and L-components of the adjusting section.

Growing community of inventors

Fujisawa, Japan

Tomohisa Okada