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:
Feb. 03, 2026
Filed:
Oct. 31, 2022
Cisco Technology, Inc., San Jose, CA (US);
Kadaba Lakshmikumar, Hillsborough, NJ (US);
Alexander Christopher Kurylak, Nazareth, PA (US);
Romesh Kumar Nandwana, Chapel Hill, NC (US);
CISCO TECHNOLOGY, INC., San Jose, CA (US);
Abstract
An apparatus comprises: a photodetector having a cathode and an anode to generate an output current; and a differential transimpedance amplifier (TIA) having a first amplifier input coupled to a first one of the cathode and the anode through a first AC coupling capacitor and a first feedforward resistor that is connected in parallel with the first AC coupling capacitor between the first one of the cathode and the anode and the first amplifier input, the differential TIA having a second amplifier input coupled to a second one of the cathode and the anode that is not the first one of the anode and the cathode, the differential TIA configured to convert the output current of the photodetector as presented at the first amplifier input and the second amplifier input to a differential output voltage.