Fujitsu Corporation

Taiyo Yuden Co., Ltd.

Chiba University

Tatsuya Omori

Kenya Hashimoto

Masatsune Yamaguchi

Masanori Ueda

Jun Tsutsumi

Shogo Inoue

Motoaki Hara

Yasufumi Kaneda

Motoyuki Tajima

Naofumi Yokoyama

Kenji Matsuda

A surface acoustic wave device includes a pair of reflectors and an interdigital transducer having a cross electrode having a interdigitated portion and a dummy portion and a dummy electrode. The dummy electrode has a length different from the length of the dummy portion of the cross electrode arranged adjacent to the dummy electrode.

Elastic surface wave device comprising dummy electrodes

An acoustic wave device includes a ladder-type filter in which resonators are connected in a ladder configuration. In the acoustic wave device, series-connected resonators are connected in a parallel line in the ladder-type filter, and the resonators connected in the parallel line have mutually different resonance frequencies.

Acoustic wave device, duplexer, communication module, and communication apparatus

A surface acoustic wave device which reflects a surface acoustic wave is provided. The reflector of the surface acoustic wave device includes electrode fingers. The electrode fingers are disposed at predetermined intervals d, and are divided into five groups by the width. The widths w of the electrode fingers are varied between widths w,w,and w,so that the reflectance becomes similar to the Hamming function.

Surface acoustic wave reflecting device having reflectance similar to the hamming function

Growing community of inventors

Chiba, Japan

Tatsuya Omori