Yozan Corporation

Sharp Kabushiki Kaisha Corporation

Sumitomo Metal Industries, Inc.

Shengmin Lin

Guoliang Shou

Makoto Yamamoto

Changming Zhou

Kazunori Motohashi

Sunao Takatori

Toshiyuki Matsumoto

Muneo Harada

Yoshihiro Hirota

Takashi Tomatsu

Jie Chen

Xiaoling Qin

Takahiko Ooasa

An inverting amplifying circuit for outputting an inversion of an input with good linearity, having an inverter circuit, a feedback capacitance, an input capacitance, a first refresh switch, a second refresh switch, a sleep switch, and a first cutoff switch. A sleep voltage is input through the sleep switch to the inverter circuit for minimizing the electrical power consumption. The sleep switch connects a terminal of the inverter circuit directly to ground when in a sleep mode. The first cut off switch is connected between an output of the inverter circuit and an output of the inverting amplifying circuit.

Inverting amplifying circuit

A small sensor circuit with reducible electric power consumption is formed by connecting inverting amplifiers comprised of CMOS inverters connected in an odd number of stages, in series to guarantee the linearity of the relationship between inputs and outputs, and connecting an impedance as a sensor between the inputs and outputs, or to an input.

Sensor circuit

An object of the present invention is to provide a matched filter circuit of small size and consuming low electric power. Paying attention that a spreading code is a 1 bit data string, an input signal is sampled and held as an analog signal along the time sequence, classified into '1' and '-1' and the classified signals are added in parallel by capacitive coupling in a matched filter circuit according to the present invention.

Matched filter circuit

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Tokyo, Japan

Shengmin Lin