公开(公告)号：US20220038130A1

公开(公告)日：2022-02-03

申请号：US16983619

申请日：2020-08-03

Applicant: Apple Inc.

Inventor： Heegon Kim ,  Abhilash Rajagopal ,  Samir Bouadjel

IPC: H04B1/40 ,  H03F3/45 ,  H03H7/01

Abstract: Systems for bi-directional single-ended transmission are described. For example, a system may include a receiver with a first differential input terminal and a second differential input terminal, wherein the first differential input terminal is coupled to a first node and the second differential input terminal is coupled to a second node; a transmitter with an output terminal coupled to a third node; a first inductor connected between the first node and the third node; a second inductor connected between the second node and the third node; and a shunt resistor connected between the third node and a ground node.

公开(公告)号：US20220352920A1

公开(公告)日：2022-11-03

申请号：US17867154

申请日：2022-07-18

Applicant: Apple Inc.

Inventor： Heegon Kim ,  Abhilash Rajagopal ,  Samir Bouadjel

IPC: H04B1/40 ,  H03F3/45 ,  H03H7/01

Abstract: Systems for bi-directional single-ended transmission are described. For example, a system may include a receiver with a first differential input terminal and a second differential input terminal, wherein the first differential input terminal is coupled to a first node and the second differential input terminal is coupled to a second node; a transmitter with an output terminal coupled to a third node; a first inductor connected between the first node and the third node; a second inductor connected between the second node and the third node; and a shunt resistor connected between the third node and a ground node.

公开(公告)号：US20250102641A1

公开(公告)日：2025-03-27

申请号：US18811191

申请日：2024-08-21

Applicant: Apple Inc.

Inventor： Abhilash Rajagopal ,  Chentian Zhu ,  Heegon Kim ,  James C. Chiappe

IPC: G01S7/4861 ,  H01B11/12

Abstract: A system includes processing circuitry communicatively coupled to a coaxial cable as well as a sensor, such as a light detection and ranging (LIDAR) sensor communicatively coupled to an unshielded twisted pair (UTP) cable. The processing circuitry and LIDAR sensor may be communicatively coupled to one another via a UTP-to-coaxial converter that is communicatively coupled to both the coaxial cable and the UTP cable. The UTP-to-coaxial converter includes filter circuitry configured to receive one or more signals generated by the LIDAR sensor and generate one or more filtered signals by blocking a portion of the one or more signals having a frequency in a first frequency range. The UTP-to-coaxial converter is configured to send the one or more filtered signals to the processing circuitry via the coaxial cable.

公开(公告)号：US20220038297A1

公开(公告)日：2022-02-03

申请号：US17235392

申请日：2021-04-20

Applicant: Apple Inc.

Inventor： Heegon Kim ,  Abhilash Rajagopal ,  Samir Bouadjel

IPC: H04L12/10

Abstract: Systems for bi-directional single-ended transmission are described. For example, a system may include a receiver with a first differential input terminal and a second differential input terminal, wherein the first differential input terminal is coupled to a first node and the second differential input terminal is coupled to a second node; a transmitter with an output terminal coupled to a third node; a first inductor connected between the first node and the third node; a second inductor connected between the second node and the third node; and a shunt resistor connected between the third node and a ground node. Some implementations include a first inductor with an inductance within twenty percent of 1 microhenry and a capacitance less than a tenth of a picofarad is included in a filter coupling a power supply to transmission line. The first inductor may connect to the transmission line.

公开(公告)号：US11652502B2

公开(公告)日：2023-05-16

申请号：US17867154

申请日：2022-07-18

Applicant: Apple Inc.

Inventor： Heegon Kim ,  Abhilash Rajagopal ,  Samir Bouadjel

IPC: H04B7/00 ,  H04B1/40 ,  H03F3/45 ,  H03H7/01

CPC classification number: H04B1/40 ,  H03F3/45475 ,  H03H7/0138 ,  H03F2200/451

Abstract: Systems for bi-directional single-ended transmission are described. For example, a system may include a receiver with a first differential input terminal and a second differential input terminal, wherein the first differential input terminal is coupled to a first node and the second differential input terminal is coupled to a second node; a transmitter with an output terminal coupled to a third node; a first inductor connected between the first node and the third node; a second inductor connected between the second node and the third node; and a shunt resistor connected between the third node and a ground node.

公开(公告)号：US11528155B2

公开(公告)日：2022-12-13

申请号：US17235392

申请日：2021-04-20

Applicant: Apple Inc.

Inventor： Heegon Kim ,  Abhilash Rajagopal ,  Samir Bouadjel

IPC: H04B7/00 ,  H04L12/10

Abstract: Systems for bi-directional single-ended transmission are described. For example, a system may include a receiver with a first differential input terminal and a second differential input terminal, wherein the first differential input terminal is coupled to a first node and the second differential input terminal is coupled to a second node; a transmitter with an output terminal coupled to a third node; a first inductor connected between the first node and the third node; a second inductor connected between the second node and the third node; and a shunt resistor connected between the third node and a ground node. Some implementations include a first inductor with an inductance within twenty percent of 1 microhenry and a capacitance less than a tenth of a picofarad is included in a filter coupling a power supply to transmission line. The first inductor may connect to the transmission line.