Intel corporation (20250097081). COMPLEX-ZERO EQUALIZER CIRCUIT
COMPLEX-ZERO EQUALIZER CIRCUIT
Organization Name
Inventor(s)
Sashank Krishnamurthy of Hillsboro OR US
Mozhgan Mansuri of Portland OR US
COMPLEX-ZERO EQUALIZER CIRCUIT
This abstract first appeared for US patent application 20250097081 titled 'COMPLEX-ZERO EQUALIZER CIRCUIT
Original Abstract Submitted
embodiments herein relate to an equalizer in a communication system. in an example implementation, the communication system is an optical system including a vertical-cavity surface-emitting laser (vcsel). a transfer function of the equalizer has two complex-zeroes to compensate for a group delay variation due to an underdamped complex-pole pair of the vcsel optical response. the equalizer may include a first transistor having a control gate coupled to an input path, a drain coupled to an output path, and a source, and first, second and third paths coupled between the source and ground. the first path includes, in series, a resistor, a node and a capacitor, the second path includes a second transistor having a control gate coupled to the node, and the third path includes a capacitor. a tuning process can be used to achieve a desired frequency and quality factor.