Method for minimizing radio frequency emissions from plug-in ada

Details Method for minimizing radio frequency emissions from plug-in ada Method for minimizing radio frequency emissions from plug-in ada

1996-07-12

1997-11-11

Gensler, Paul

Wave transmission lines and networks

Transmission line inductive or radiation interference...

333181, H05K 102, H05K 900

Patent

active

056868715

ABSTRACT:
Noise generated in a computer system on a modem adapter card is effectively suppressed by providing an extension to a voltage reference plane. The extension reference plane is coupled to the voltage reference plane of the adapter card by an impedance circuit. The extension reference plane causes the adapter card to have a composite reference plane which has an overall length greater than one-quarter of the wavelength of the signal to be suppressed such that the composite reference plane does not resonate at the frequency of the signal which generated the noise. The reference planes are preferably connected by a resonant circuit so that the two reference planes are effectively electrically connected at high frequencies and are electrically disconnected at low frequencies so that resonance of the boards is also suppressed at the lower frequencies.

REFERENCES:
patent: 2754484 (1956-07-01), Adams
patent: 3398232 (1968-08-01), Hoffman
patent: 3680005 (1972-07-01), Jorgensen et al.
patent: 4490690 (1984-12-01), Suzuki
patent: 4498122 (1985-02-01), Rainal
patent: 4605915 (1986-08-01), Marshall et al.
patent: 4658334 (1987-04-01), McSparran et al.
patent: 4689442 (1987-08-01), Ozaki
patent: 4845311 (1989-07-01), Schreiber et al.
patent: 4954929 (1990-09-01), Baran
patent: 5068631 (1991-11-01), Vince
patent: 5227742 (1993-07-01), Suzuki
patent: 5357050 (1994-10-01), Baran et al.
patent: 5523921 (1996-06-01), Van Lydegraf

Affiliated with

Also associated with

Rating

Method for minimizing radio frequency emissions from plug-in ada does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for minimizing radio frequency emissions from plug-in ada, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for minimizing radio frequency emissions from plug-in ada will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1232357