公开(公告)号：US11838072B2

公开(公告)日：2023-12-05

申请号：US17486745

申请日：2021-09-27

Applicant: QUALCOMM Incorporated

Inventor： Cheng Tan ,  Lei Sun ,  Sean Vincent Maschue ,  Bruce Charles Fischer, Jr. ,  Brian French

IPC: H04B3/48 ,  H03F3/24

CPC classification number: H04B3/48 ,  H03F3/245 ,  H03F2200/451

Abstract: Certain aspects of the present disclosure provide techniques for determining a cable loss associated with a transmission cable of an apparatus. An example method includes sending, to a radio modem of the apparatus, a request for the radio modem to use a target power when sending one or more signals to the signal compensator device for determining a cable loss associated with a transmission cable communicatively coupling the radio modem with the signal compensator device, receiving, at a signal compensator device of the apparatus, the one or more signals from the radio modem sent using the target power, and determining the cable loss associated with the transmission cable based on the one or more signals.

公开(公告)号：US11901931B2

公开(公告)日：2024-02-13

申请号：US17471095

申请日：2021-09-09

Applicant: QUALCOMM Incorporated

Inventor： Lei Sun ,  Sean Vincent Maschue ,  Cheng Tan ,  Bruce Charles Fischer, Jr. ,  Brian French

IPC: H04B1/525 ,  H04B17/10 ,  H04B1/12

CPC classification number: H04B1/525 ,  H04B1/12 ,  H04B17/102

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may filter leaked power from a signal to accurately perform antenna compensation operations (e.g., apply a transmit gain, perform cable loss measurements) using valid power. A switch at the UE may leak power to an antenna for a transmission, and the UE may use a dynamic filtering algorithm to determine whether a pulse power of a detected signal is leaked or valid. The dynamic filtering algorithm may be able to account for variations in leaked power values, as leaked power may increase or decrease proportionally to intended power (e.g., from which power was leaked). By determining whether pulse power is leaked or valid, the UE may be able to filter out the leaked power and accurately perform antenna compensation operations such as applying a transmit gain for a transmission, performing a cable loss measurement, or the like.

公开(公告)号：US20230076071A1

公开(公告)日：2023-03-09

申请号：US17471095

申请日：2021-09-09

Applicant: QUALCOMM Incorporated

Inventor： Lei Sun ,  Sean Vincent Maschue ,  Cheng Tan ,  Bruce Charles Fischer, JR. ,  Brian French

IPC: H04B1/525 ,  H04B1/12 ,  H04B17/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may filter leaked power from a signal to accurately perform antenna compensation operations (e.g., apply a transmit gain, perform cable loss measurements) using valid power. A switch at the UE may leak power to an antenna for a transmission, and the UE may use a dynamic filtering algorithm to determine whether a pulse power of a detected signal is leaked or valid. The dynamic filtering algorithm may be able to account for variations in leaked power values, as leaked power may increase or decrease proportionally to intended power (e.g., from which power was leaked). By determining whether pulse power is leaked or valid, the UE may be able to filter out the leaked power and accurately perform antenna compensation operations such as applying a transmit gain for a transmission, performing a cable loss measurement, or the like.

公开(公告)号：US12273072B2

公开(公告)日：2025-04-08

申请号：US17646405

申请日：2021-12-29

Applicant: QUALCOMM Incorporated

Inventor： Cheng Tan ,  Bruce Charles Fischer, Jr. ,  Brian French

IPC: H03F1/02 ,  H03F3/19 ,  H04B1/40

Abstract: An envelope detection circuit and methods for detecting an envelope of a signal using such an envelope detection circuit. One example envelope detection circuit generally includes a first diode, a capacitive element, and a clamping circuit. The first diode has an anode coupled to an input node of the envelope detection circuit and has a cathode coupled to an output node of the envelope detection circuit. The capacitive element is coupled in shunt between the output node and a reference potential node, and the clamping circuit is coupled in shunt between the input node and the reference potential node. The clamping circuit generally includes a resistive element coupled in series with a second diode.