Matsushita Electric Industrial Co., Ltd.

Atsushi Sasaki

Toshio Ishizaki

Hideaki Nakakubo

Yuki Satoh

Hiroshi Kushitani

Toshiaki Nakamura

Tetsuo Kawakita

Keizaburo Kuramasu

Kimio Aizawa

Takashi Fujino

Hiroaki Kosugi

Hiroshi Takahashi

Naoki Yuda

Tsutomu Matsumura

Youichi Morinaga

Ikuo Ohta

Tooru Sakuragawa

A method of fabricating a thin-film transistor including forming a polycrystalline semiconductor thin film on a substrate by irradiating with a laser beam an amorphous semiconductor thin film formed on the substrate. Heat treating the polycrystalline semiconductor thin film while the substrate is held by a substrate holder provided in a container containing hydrogen, and processing, prior to or after the heat treating, the polycrystalline semiconductor thin film into a specified configuration.

Method of fabricating a thin-film transistor

Method of fabricating a thin film transistor

A dielectric antenna duplexer used in a high frequency radio device such as a portable telephone, and a dielectric filter for forming the duplexer of the SIR (stepped impedance resonator) composed by cascade connection of first transmission lines having one end grounded and second transmission lines having one end open and lower in characteristic impedance than in the first transmission lines, first transmission lines and second transmission lines are individually coupled in electromagnetic field, thereby forming an antenna duplexer and a dielectric filter of small insertion loss, high bandwidth selectivity, excellent band pass characteristic, and low cost.

Laminated dielectric antenna duplexer and a dielectric filter

Dielectric filter with multiple resonators

An antenna switching device of the present invention includes: a transmitting terminal for receiving a transmitting signal; a first antenna terminal connected to a first antenna; a second antenna terminal connected to a second antenna; a receiving terminal for outputting receiving signals received at the first antenna terminal and the second antenna terminal; a selecting unit for selecting one mode among a first mode for outputting a signal corresponding to the transmitting signal to the first antenna terminal, a second mode for outputting the receiving signal received at the first antenna to the receiving terminal, and a third mode for outputting the receiving signal received at the second antenna to the receiving terminal.

Antenna diversity switching device with switching circuits between the

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Toyonaka, Japan

Atsushi Sasaki