Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1990-11-27
1992-08-11
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
359189, H01J 4014
Patent
active
051381486
ABSTRACT:
The present invention aims to provide a fiber optic receiving circuit which can obtain a sufficient frequency band even if a junction capacity of a photo diode is large, wherein a voltage dividing ratio of said voltage dividing circuit, a capacity value of a capacitor, a junction capacity value of a photo diode, and an open loop gain of an amplifier are determined so that current, which flows in the capacitor, cancels current, which flows in a junction capacity of the photo diode and causes frequency deterioration, and the junction capacity of the photo diode, which causes the frequency deterioration, does not relate to an output voltage of the amplifier, thereby obtaining a flat gain characteristic over the broad range of the frequency band regardless of the junction capacity of the photo diode.
REFERENCES:
patent: 4314152 (1982-02-01), Fenk
patent: 4591725 (1986-05-01), Bryant
patent: 4731529 (1988-03-01), Ohsawa
Patent Abstract of Japan, vol. 7, No. 267 (E-213) (1412) Nov. 29, 1983.
Radio Fernsehen Elektronik, vol. 33, No. 12, Dec. 1984, Berlin 33, p. 813.
Abstract of Japanese Patent (Kokai) No. 60-134611, 1985, printed from JAPIO data base of ORBIT computer service on Mar. 27, 1991.
Kabushiki Kaisha Toshiba
Messinger Michael
Nelms David C.
LandOfFree
Fiber optic receiving circuit having improved gain over a wide f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fiber optic receiving circuit having improved gain over a wide f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber optic receiving circuit having improved gain over a wide f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-348254