公开(公告)号：US11368164B2

公开(公告)日：2022-06-21

申请号：US17284661

申请日：2019-10-11

Applicant: UNIVERSITEIT GENT ,  IMEC VZW

Inventor： Guy Torfs ,  Hannes Ramon ,  Xin Yin

IPC: H03K9/00 ,  H03M1/66 ,  H03M1/08

Abstract: An interleaver for combining at least two incoming signals into an analog output signal includes at least a first signal path and a second signal path. Each signal path has: an input terminal, a first gain stage for multiplying a signal coming from the input terminal with a first gain (a) to obtain a first signal, a mixer and a second gain stage for multiplying a signal coming from the input terminal with a second gain (b) before or after mixing it with a clock signal to obtain a second signal, an adder for adding the first and second signal to obtain an output signal of the signal path wherein the first and second gain are different from zero. The interleaver comprises an adder for adding the output signals from the signal paths.

公开(公告)号：US11336236B2

公开(公告)日：2022-05-17

申请号：US16981864

申请日：2019-03-20

Applicant: UNIVERSITEIT GENT ,  IMEC VZW

Inventor： Joris Lambrecht ,  Hannes Ramon ,  Bart Moeneclaey ,  Xin Yin

IPC: H03F3/45 ,  H03F3/08 ,  H03F1/08 ,  H03G3/30

Abstract: A transimpedance amplifier is provided for converting a current between its two input terminals to a voltage over its two output terminals comprising a high-speed level shifter configured for creating a difference in input DC voltage and for being transparent for alternating voltages, an input biasing network configured for reverse biasing a photodiode connected to at least one of the input terminals and transparent for a feedback signal from the feedback network which is differentially and DC-coupled with the output terminals of the voltage amplifier and outputs of the feedback network are differentially and DC-coupled with the input biasing network of which outputs are coupled with inputs of the level shifter which is differentially and DC-coupled with input terminals of the voltage amplifier.

公开(公告)号：US10700490B2

公开(公告)日：2020-06-30

申请号：US16312738

申请日：2017-06-30

Applicant: UNIVERSITEIT GENT ,  IMEC VZW

Inventor： Wouter Soenen ,  Xin Yin

IPC: H01S5/042 ,  H01S3/00 ,  H01S5/00

Abstract: A driver for driving laser or a modulator comprises a switch block for switching a current to the laser or modulator and a voltage converter comprising a voltage supply node, an input port for connecting a laser or modulator supply voltage and an output port connected to the switch block. The voltage converter comprises a voltage replica block adapted for generating a pre-defined voltage and is adapted for equalizing DC voltages in the driver by using the pre-defined voltage. The pre-defined voltage approximates the threshold voltage drop of a laser when the driver is connected with a laser or approximates the bias voltage over a modulator when connected with a modulator. The driver comprises a balancer comprising a dummy load connected to the switch block adapted for equalizing voltages in the switch block.