High frequency integrated circuit device including a circuit for

Details High frequency integrated circuit device including a circuit for High frequency integrated circuit device including a circuit for

1992-03-26

1994-08-23

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, 307542, H03K 1716, H03K 170115

Patent

active

053410394

ABSTRACT:
A semiconductor integrated circuit device operated under a clock signal having a high frequency exceeding 100 MHz is disclosed. In a wiring path, impedance of wiring is changed discontinuously due to a contact hole or decrease in wiring width and the like to cause mismatching. In order to make matching in such a mismatching portion, matching resistance having a value twice as large as characteristic impedance of wiring is provided. Reflection of transmitted signals at discontinuous portions of impedance can be prevented because of the matching resistance. Therefore, malfunction in a CMOS circuit of destination is prevented.

REFERENCES:
patent: 4675551 (1987-06-01), Stevenson
patent: 4859877 (1989-09-01), Cooperman
patent: 5029284 (1991-07-01), Feldbaumer
patent: 5087900 (1992-02-01), Birchak
patent: 5111080 (1992-05-01), Mizukami
patent: 5134311 (1992-07-01), Biber
"A Handbook on Noise and EMI Reduction" pp. 285-295, published on Jul. 30, 1986.

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