Balance photo-receiver with complementary HBT common-base push p

Details Balance photo-receiver with complementary HBT common-base push p Balance photo-receiver with complementary HBT common-base push p

1997-12-04

2000-05-30

Lee, Benny

Amplifiers

With semiconductor amplifying device

Including atomic particle or radiant energy impinging on a...

330263, 250214A, H03F 308

Patent

active

06069534&

ABSTRACT:
A balanced photoreceiver which includes one or more photodiodes coupled to an amplifier that includes a common base configured input stage which operates over a frequency band from DC to millimeter wave frequencies. In one embodiment of the invention, the amplifier is formed as a three-stage direct coupled amplifier which includes a direct coupled complementary common base configured input stage, a complementary common emitter configured Darlington pair intermediate stage and a complementary common collector configured output stage. The common collector configured output stage is used to recombine the complementary current outputs from the input and intermediate stages. The photoreceiver in accordance with the present invention provides relatively superior output waveform symmetry over an increasing power input.

REFERENCES:
patent: 2782267 (1957-02-01), Beck
patent: 4374363 (1983-02-01), Previti
patent: 4540952 (1985-09-01), Williams
patent: 5398004 (1995-03-01), Kobayaski
patent: 5565672 (1996-10-01), Siegel et al.
patent: 5742046 (1998-04-01), Reele
"High Sensitivity Optically Preamplified Direct Detection DPSK Receiver with Active Delay-Line Stabilization" by E. Swanson, J. Livas and R. Bondurant, iie. Phototonics Technical Letter, vol. 6, No. 2, Feb., 1994, pp. 263-265.
"Push-Pull Amplifier Stages Quell Receiver Intermodulation Problems" by H. Sopotta, Microwaves and RF, Nov. 1994, pp. 5-8.
"Analysis of Design of Analog Integrated Circuits", by P. Gray and R. Meyer, second edition, John Wiley & Sons New York, 1984, pp. 176-180. No Month.

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