The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2017
Filed:
Apr. 07, 2017
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Altin E. Pelteku, Severna Park, MD (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
A voltage-mode integrate-and-dump photonic ADC front-end circuit includes a current integrator for immediately integrating current pulses onto a capacitor voltage, the current pulses converted by photodetectors from optical data pulses corresponding to a received analog input signal. The circuit may include dampeners for reducing voltage ringing and resulting intersymbol interference (ISI) to preserve SNR at high data rates. The integrating capacitor may be discharged by a reset switch based on clock signals generated by a master clock; the reset switch may include a pulse width controller enabling the integrating capacitor to track and hold the integrated voltage, rather than downstream sample-and-hold amplifiers. Quantizers and other signal processors generate digital signal output by sampling and digitizing the integrated voltage output of the current integrator.