Transmission line and wiring forming method

Details Transmission line and wiring forming method Transmission line and wiring forming method

2006-03-02

2008-11-04

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

With impedance matching

C333S004000, C333S238000

Reexamination Certificate

active

07446624

ABSTRACT:
To provide a transmission line capable of absorbing the reflection caused by mismatching between impedances and restraining the attenuation value of a signal. The following wiring patterns are formed out of a connector mounting area in which a connector is mounted: a wiring pattern designed so as to gradually increase the wiring width and the interval between wirings of a wiring portion (B) and gradually decrease the characteristic impedance of the wiring portion (B) and a wiring pattern designed so as to gradually decrease the wiring width and the interval between wirings of the wiring portion (B′) and gradually amplify the characteristic impedance of the wiring portion (B′).

REFERENCES:
patent: 6501352 (2002-12-01), Koriyama et al.
patent: 6677831 (2004-01-01), Cheng et al.
patent: 4-367258 (1992-12-01), None
patent: 2003-163510 (2003-06-01), None
Kazuhiro Kashiwakura et al. “High Speed Transmission Technology for IP Switch Router” NEC Gihou vol. 55, No. 10, pp. 55-58.

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