Attenuator having a plurality of current source circuits

Details Attenuator having a plurality of current source circuits Attenuator having a plurality of current source circuits

1995-03-28

1996-10-08

Gensler, Paul

Wave transmission lines and networks

Attenuators

327328, H03H 724

Patent

active

055635571

ABSTRACT:
The attenuator device comprises a unit step attenuator 4 (having a switch FET 5, an attenuation resistor 6 connected in parallel to the switch FET 5, and two shutdown resistors 7 and 8); three current source circuits 20.sub.1, 20.sub.2 and 20.sub.3 (having three transfer gates 22.sub.1, 22.sub.2 and 22.sub.3 and three current source FETs 23.sub.1, 23.sub.2 and 23.sub.3 for controlling a gate current of the switch FET 5). The signal transmission loss and the layout area can be reduced as much as possible, even if various attenuation rates are required.

REFERENCES:
patent: 5128566 (1992-07-01), Killion et al.
patent: 5157323 (1992-10-01), Ali et al.
patent: 5309048 (1994-05-01), Khabbaz
Japanese Patent Disclosure (Kokai) No. 6-69754; S. Amano: Mar. 11, 1994.
M. Higuchi et al., "Step Attenuator for Digital Mobile Telephones" Proceedings of the 1994 IEICE Spring Conference, pp. 2-622, C-117, 1994, Japan no month.
J. Bayruns et al., "A Monolithic DC-1.6GHz Digital Attenuator" IEEE MTT-S Digest, pp. 12/95--12/98, 1989 no month.

Affiliated with

Also associated with

Rating

Attenuator having a plurality of current source circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Attenuator having a plurality of current source circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Attenuator having a plurality of current source circuits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-60342