公开(公告)号：US20240305327A1

公开(公告)日：2024-09-12

申请号：US18667309

申请日：2024-05-17

Applicant: QUALCOMM Incorporated

Inventor： Janakiram SANKARANARAYANAN ,  Jun TAN ,  Lai Kan LEUNG ,  Timothy Donald GATHMAN ,  Mehmet IPEK ,  Ojas CHOKSI

IPC: H04B1/18 ,  H03F3/19

CPC classification number: H04B1/18 ,  H03F3/19 ,  H03F2200/294 ,  H03F2200/451

Abstract: An amplifying circuit includes a first reconfigurable amplifier configured to selectively operate in a cascode mode or a non-cascode mode, wherein an input of the first reconfigurable amplifier is coupled to a first input of the amplifying circuit, and an output of the first reconfigurable amplifier is coupled to an output of the amplifying circuit. The amplifying circuit also includes a second reconfigurable amplifier configured to selectively operate in the cascode mode or the non-cascode mode, wherein an input of the second reconfigurable amplifier is coupled to a second input of the amplifying circuit, and an output of the second reconfigurable amplifier is coupled to the output of the amplifying circuit.

公开(公告)号：US20150118980A1

公开(公告)日：2015-04-30

申请号：US14264951

申请日：2014-04-29

Applicant: QUALCOMM Incorporated

Inventor： Lai Kan LEUNG ,  Chiewcharn NARATHONG ,  Jianyun HU

IPC: H04B1/04 ,  H04B1/38

CPC classification number: H04B1/38 ,  H04B17/11 ,  H04B17/14 ,  H04B17/21 ,  H04L27/364 ,  H04L2027/0016

Abstract: Certain aspects of the present disclosure provide methods and apparatus for calibrating a transceiver for wireless communications. One example method generally includes configuring a first oscillating signal as an input signal to at least a portion of a receiver (RX) path, calibrating a residual sideband (RSB) of the receiver path using a second oscillating signal as a local oscillating signal for the receiver path, and calibrating an RSB of a transmitter (TX) path by routing an output of the transmitter path to the receiver path, after calibrating the RSB of the receiver path. Another example method generally includes routing an output of a transmitter path to a receiver path, using a first local oscillating signal for the transmitter path, using a second local oscillating signal for the receiver path, and measuring an output of the receiver path as a local oscillator (LO) leakage for the transmitter path.

Abstract translation: 本公开的某些方面提供了用于校准用于无线通信的收发器的方法和装置。 一个示例性方法通常包括将第一振荡信号配置为至少接收器（RX）路径的一部分的输入信号，使用第二振荡信号作为本地振荡信号来校准接收机路径的残余边带（RSB） 接收机路径，并且在校准接收机路径的RSB之后，通过将发射机路径的输出路由到接收机路径来校准发射机（TX）路径的RSB。 另一示例性方法通常包括使用发射机路径的第一本地振荡信号，使用接收机路径的第二本地振荡信号将发射机路径的输出路由到接收机路径，并且将接收机路径的输出测量为本地 发射机路径的振荡器（LO）泄漏。

公开(公告)号：US20210159861A1

公开(公告)日：2021-05-27

申请号：US16692975

申请日：2019-11-22

Applicant: QUALCOMM Incorporated

Inventor： Lai Kan LEUNG ,  Aleksandar Miodrag TASIC

IPC: H03F3/19 ,  H04B1/18

Abstract: A reconfigurable power detector is described. The reconfigurable power detector includes a first power detector circuit. The first power detector circuit includes a pair of coupled first-type transistors to switch a first-type positive output and a first-type negative output. The reconfigurable power detector includes a second power detector circuit. The second power detector circuit includes a pair of coupled second-type transistors to switch a second-type positive output and a second-type negative output. The reconfigurable power detector includes a switch matrix. The switch matrix includes switches to select the second-type positive output and the second-type negative output in a first configuration, the first-type positive output and the first-type negative output in a second configuration, and the first-type positive output and the second-type positive output in a third configuration. The reconfigurable power detector also includes a configuration block to program the switches to select an output configuration at a detector output.

公开(公告)号：US20210136696A1

公开(公告)日：2021-05-06

申请号：US17086373

申请日：2020-10-31

Applicant: QUALCOMM Incorporated

Inventor： Joseph Patrick BURKE ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Charline HAO ,  Joseph Binamira SORIAGA ,  Lai Kan LEUNG ,  Gurkanwal Singh SAHOTA ,  Tingfang JI ,  Krishna Kiran MUKKAVILLI ,  Allen Minh-Triet Tran

IPC: H04W52/14 ,  H04L5/14 ,  H04B15/00 ,  H04B17/318

Abstract: During an uplink TDD slot, an UL UE transmits an UL signal that occupies a slot frequency range. Similarly, during a DL TDD slot, a DL UE receives a DL signal that occupies the slot frequency range. But during an SBFD slot, a UL UE transmits a UL signal that occupies only a first sub-band of the slot frequency range. Similarly, a DL UE receives a DL signal during an SBFD slot that occupies only a second sub-band of the slot frequency range. The second sub-band is distinct from the first sub-band. The DL UE may thus mitigate UE-to-UE interference during an SBFD slot by filtering the DL signal to substantially block the second sub-band from being received at the DL UE.

公开(公告)号：US20190334539A1

公开(公告)日：2019-10-31

申请号：US15962967

申请日：2018-04-25

Applicant: QUALCOMM Incorporated

Inventor： Timothy Donald GATHMAN ,  Yuhua GUO ,  Lai Kan LEUNG ,  Elias DAGHER ,  Dinesh Jagannath ALLADI

IPC: H03M1/12 ,  H04B1/16

Abstract: A receiver may include a time-interleaved charge sampler comprising a charge sampler switch in series with a charge sampler capacitor. The receiver may also include a current buffer configured to drive the time-interleaved charge sampler.

公开(公告)号：US20150334710A1

公开(公告)日：2015-11-19

申请号：US14636591

申请日：2015-03-03

Applicant: QUALCOMM Incorporated

Inventor： Yiwu TANG ,  Rajagopalan RANGARAJAN ,  Chiewcharn NARATHONG ,  Lai Kan LEUNG ,  Aleksandar Miodrag TASIC ,  Dongling PAN

IPC: H04W72/04 ,  H04B1/16 ,  H04L5/00

CPC classification number: H04W72/0453 ,  H04B1/16 ,  H04B1/30 ,  H04B1/38 ,  H04L5/001 ,  H04L5/003 ,  H04L27/2647

Abstract: Certain aspects of the present disclosure provide methods and apparatus for dynamically adjusting a voltage-controlled oscillator (VCO) frequency, a local oscillator (LO) divider ratio, and/or a receive path when adding or discontinuing reception of a component carrier (CC) in a carrier aggregation (CA) scheme. This dynamic adjustment is utilized to avoid (or at least reduce) VCO, LO, and transmit signal coupling issues with multiple component carriers, with minimal (or at least reduced) current consumption by the VCO and the LO divider.

Abstract translation: 本公开的某些方面提供了当添加或停止分量载波（CC）的接收时动态地调整压控振荡器（VCO）频率，本地振荡器（LO）分频器比率和/或接收路径的方法和装置， 在载波聚合（CA）方案中。 利用VCO和LO分频器的最小（或至少降低）的电流消耗，利用该动态调整来避免（或至少降低）VCO，LO和发送与多个分量载波的信号耦合问题。

公开(公告)号：US20240183935A1

公开(公告)日：2024-06-06

申请号：US18061967

申请日：2022-12-05

Applicant: QUALCOMM Incorporated

Inventor： Danlu ZHANG ,  Weimin DUAN ,  Jing JIANG ,  Roberto RIMINI ,  John Edward SMEE ,  Peter Pui Lok ANG ,  Lai Kan LEUNG ,  Seyedkianoush HOSSEINI

IPC: G01S7/00 ,  G01S7/35 ,  G01S13/86 ,  H04L5/00

CPC classification number: G01S7/006 ,  G01S7/35 ,  G01S13/86 ,  H04L5/0007

Abstract: Aspects presented herein may enable a wireless device (e.g., a joint FMCW radar and communication system) to transmit and/or receive an FMCW signal and an OFDM signal using the same time and frequency resources. In one aspect, a first wireless device receives an indication of a scheduled transmission for an FMCW waveform via a set of time-frequency resources. The first wireless device transmits or receives the FMCW waveform via the set of time-frequency resources based on the indication, where the FMCW waveform is separated from an OFDM waveform by a buffer zone including a first gap in frequency, where the first gap in frequency is based on an interference level between the FMCW waveform and the OFDM waveform.

公开(公告)号：US20230057499A1

公开(公告)日：2023-02-23

申请号：US17404948

申请日：2021-08-17

Applicant: QUALCOMM Incorporated

Inventor： Janakiram SANKARANARAYANAN ,  Jun TAN ,  Lai Kan LEUNG ,  Timothy Donald GATHMAN ,  Mehmet IPEK ,  Ojas CHOKSI

IPC: H04B1/18 ,  H03F3/19

Abstract: A reconfigurable amplifier includes a first transistor having a gate coupled to an input of the reconfigurable amplifier, and a source coupled to a ground. The reconfigurable amplifier also includes a gate control circuit, and a second transistor having a gate coupled to the gate control circuit, a source coupled to a drain of the first transistor, and a drain coupled to an output of the reconfigurable amplifier, wherein the gate control circuit is configured to output a bias voltage to the gate of the second transistor in a cascode mode, and output a switch voltage to the gate of the second transistor in a non-cascode mode. The reconfigurable amplifier further includes a load coupled to the output of the reconfigurable amplifier.

公开(公告)号：US20190097608A1

公开(公告)日：2019-03-28

申请号：US15712406

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Timothy Donald GATHMAN ,  Lai Kan LEUNG ,  Chirag Dipak PATEL ,  Rajagopalan RANGARAJAN

IPC: H03H11/42 ,  H04B1/48 ,  H04B5/00

CPC classification number: H03H11/08 ,  H03H11/0444 ,  H03H11/342 ,  H03H11/42 ,  H03H2011/0494 ,  H04B1/48 ,  H04B5/0012 ,  H04B5/0075

Abstract: Certain aspects of the present disclosure relate to multi-band filter architectures and methods for filtering signals using the multi-band filter architectures. One example multi-band filter generally includes a transconductance-capacitance (gm-C) filter and a reconfigurable load impedance coupled to an output of the gm-C filter, the reconfigurable load impedance comprising a first gyrator circuit coupled to a second gyrator circuit.

公开(公告)号：US20180205413A1

公开(公告)日：2018-07-19

申请号：US15872695

申请日：2018-01-16

Applicant: QUALCOMM Incorporated

Inventor： Chirag Dipak PATEL ,  Lai Kan LEUNG ,  Zhang JIN ,  Chinmaya MISHRA ,  Ravi SRIDHARA ,  Youngchang YOON

IPC: H04B1/44 ,  H04W72/04 ,  H04L5/14 ,  H03F1/48 ,  H03F3/19 ,  H03F3/24 ,  H03F1/56

Abstract: Various aspects described herein relate to low-loss multi-band multiplexing schemes for a wireless communications system, for example, a 5th Generation (5G) New Radio (NR) system. In an aspect, a multiplexer for multi-band wireless communications comprises at least one tuning component configured to transmit or receive at least one signal within a frequency band that is selected from a plurality of frequency bands. The multiplexer further comprises at least one combining component, communicatively coupled with the at least one tuning component, configured to transmit or receive the at least one signal within the selected frequency band. In an aspect, the at least one tuning component is integrated on a chip and the at least one combining component is not integrated on the chip.