Amplifiers – With semiconductor amplifying device – Including balanced to unbalanced circuits and vice versa
Patent
1986-02-04
1987-02-17
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including balanced to unbalanced circuits and vice versa
330257, 330302, H03F 345
Patent
active
046442952
ABSTRACT:
An active differential load circuit which receives a differential input signal applied to first and second inputs thereof and produces a single ended output signal at an output thereof while unwanted higher frequency signals applied thereto are filtered from the output without ground currents. The load includes a pair of transistors which have, in the preferred embodiment, their collectors connected together via series connected first and second resistors with the interconnection between the two resistors being connected to the bases of the two transistors. The collectors are also respectively coupled to a pair of current sources and the respective emitters receiving the applied differential input signal. A filter capacitor is coupled between the collectors of the two transistors and efffectively shorts the unwanted higher frequency signals thereacross.
REFERENCES:
patent: 3866125 (1975-02-01), Kilian
patent: 4216435 (1980-08-01), Ahmed
Jaeger, "Active Load for Differential Amplifiers", IBM Technical Disclosure Bulletin, vol., 16, No. 10, Mar. 1974, pp. 3140, 3141.
Bingham Michael D.
Motorola Inc.
Mullins James B.
LandOfFree
Balanced differential load and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Balanced differential load and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Balanced differential load and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1939529