Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Reexamination Certificate
2006-05-31
2008-08-12
Porta, David P. (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
C250S370020, C250S370080, C250S370090, C327S230000, C327S345000, C327S363000
Reexamination Certificate
active
07411198
ABSTRACT:
Input circuitry is provided for a high voltage operated radiation detector to receive pulses from the detector having a rise time in the range of from about one nanosecond to about ten nanoseconds. An integrator circuit, which utilizes current feedback, receives the incoming charge from the radiation detector and creates voltage by integrating across a small capacitor. The integrator utilizes an amplifier which closely follows the voltage across the capacitor to produce an integrator output pulse with a peak value which may be used to determine the energy which produced the pulse. The pulse width of the output is stretched to approximately 50 to 300 nanoseconds for use by subsequent circuits which may then use amplifiers with lower slew rates.
REFERENCES:
patent: 4078178 (1978-03-01), Lowes
patent: 4217497 (1980-08-01), Daniels et al.
patent: 4395635 (1983-07-01), Friauf et al.
patent: 4476386 (1984-10-01), Reid et al.
patent: 4491799 (1985-01-01), Giardinelli
patent: 4810959 (1989-03-01), Padawer
patent: 4870603 (1989-09-01), Padawer
patent: 5067090 (1991-11-01), Seeman
patent: 5142286 (1992-08-01), Ribner et al.
patent: 5347129 (1994-09-01), Miller et al.
patent: 5493122 (1996-02-01), Farr
patent: 5574284 (1996-11-01), Farr
patent: 5684850 (1997-11-01), Warburton et al.
patent: 5873054 (1999-02-01), Warburton et al.
patent: 6064054 (2000-05-01), Waczynski et al.
patent: 6222175 (2001-04-01), Krymski
patent: 6380790 (2002-04-01), Denison
patent: 6570432 (2003-05-01), Denison
patent: 6573762 (2003-06-01), Wessendorf et al.
patent: 6609075 (2003-08-01), Warburton et al.
patent: 6653636 (2003-11-01), Busse et al.
patent: 6703959 (2004-03-01), Kuwabara
patent: 6917041 (2005-07-01), Doty et al.
patent: 7211803 (2007-05-01), Dhurjaty et al.
patent: 2003/0146389 (2003-08-01), Busse et al.
patent: 2004/0026623 (2004-02-01), Doty et al.
DM Binkley, BS Puckett, ME Casey, R Lecomte, and A Saoudi, “A Power Efficient, Low Noise, Wideband, Integrated CMOS Preamplifier for LSO/APD PET Systems,” Nuclear Science Symposium, IEEE, 1999.
DM Binkley, JM Rochelle, MJ Paulus, and ME Casey, “A Low-Noise, Wideband, Integrated CMOS Transimpedance Preamplifier for Photodiode,” IEEE Transactions on Nuclear Science vol. 39, No. 4, 1992.
Delaune Paul B.
Holland Samuel D.
Turner Kathryn M.
Bryant Casey
Porta David P.
Ro Theodore U.
The United States of America as represented by the Administrator
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