Line termination for multiple differential transmission lines

Wave transmission lines and networks – Dissipating terminations for long lines – Fluid-cooling

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333 32, 333177, 379398, 379416, H01P 126

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056592736

ABSTRACT:
A termination is provided for a differential transmission line such as unshielded twisted pair (UTP) to isolate a connected device from electromagnetic interference present on the UTP in the form of differential mode and common mode noise. An example of an electromagnetic interference isolator comprises a common mode and a differential mode termination, a common mode choke which exhibits substantially constant impedance over a wide bandwidth and a centre tapped isolation transformer.

REFERENCES:
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patent: 4751607 (1988-06-01), Smith
patent: 4823095 (1989-04-01), Atallah et al.
patent: 4951312 (1990-08-01), Tanikawa et al.
patent: 5020102 (1991-05-01), Schorr
patent: 5095291 (1992-03-01), Staschover et al.
patent: 5321372 (1994-06-01), Smith
Patent Abstracts of Japan, vol. 7 No. 84 (E-169) & JP-A-58 012 436, Apr. 1983.
A. W. Nicholson et al., "NPL Standard-Interface Module for Remote Data Transfer" Electronics Letters, vol. 2, No. 4, Apr. 1966, pp. 135-136.
EPO Standard Search Report, File RS 94580, Apr. 24, 1995.

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