-
公开(公告)号：US10348246B1
公开(公告)日：2019-07-09
申请号：US15862567
申请日：2018-01-04
Applicant: Qualcomm Incorporated
Inventor： Ayush Mittal , Krishnaswamy Thiagarajan , Bhushan Shanti Asuri , Mahim Ranjan
Abstract: An apparatus is disclosed for mixer biasing with baseband filter common-mode voltage. In an example aspect, the apparatus includes a mixer, a baseband filter, and a bias circuit. The mixer has a mixer transistor that is coupled to a bias node and a baseband node. The baseband filter is coupled to the mixer via the baseband node. The baseband filter is configured to operate with a common-mode reference voltage that is associated with a common-mode voltage applied at the baseband node. The bias circuit is coupled to the baseband filter and the bias node. The bias circuit is configured to receive the common-mode reference voltage from the baseband filter and generate, at the bias node, a bias voltage for biasing the mixer transistor based on the common-mode reference voltage.
-
公开(公告)号：US09608569B2
公开(公告)日：2017-03-28
申请号：US14806334
申请日：2015-07-22
Applicant: QUALCOMM Incorporated
Inventor： Bhushan Shanti Asuri , Alok Prakash Joshi , Gireesh Rajendran
CPC classification number: H03F1/0205 , H03C3/08 , H03F1/3205 , H03F3/193 , H03F2200/129 , H03F2200/165 , H03F2200/451 , H03F2200/456 , H03H11/04 , H03H11/12 , H04B1/30
Abstract: A method and apparatus for linearizing a baseband filter are provided. The apparatus is configured to, via a first conducting module, receive a first current signal. The apparatus is further configured to, via a converting module, receive a second current signal, generate a voltage signal based on the second current signal, and apply the voltage signal to the first conducting module. An amount of the second current signal received by the converting module is based on an amount of the first current signal flowing through the first conducting module. The apparatus is also configured to, via a second conducting module, control an output current signal based on the voltage signal. The output current signal is controlled to be a linear replica of the first current signal for in-band frequencies.
-
公开(公告)号：US09525503B2
公开(公告)日：2016-12-20
申请号：US14513003
申请日：2014-10-13
Applicant: QUALCOMM Incorporated
Inventor： Chiewcharn Narathong , Lai Kan Leung , Dongling Pan , Rajagopalan Rangarajan , Kevin Hsi-huai Wang , Bhushan Shanti Asuri , Yiwu Tang
IPC: H04J3/00 , H04J4/00 , H04W88/02 , H04B1/3827 , H04L5/14 , H04B1/00 , H04B1/403 , H04L5/00 , H04B1/50 , H04B1/54
CPC classification number: H04J4/00 , H04B1/0082 , H04B1/3833 , H04B1/403 , H04B1/50 , H04B1/54 , H04B7/00 , H04L5/001 , H04L5/0023 , H04L5/14 , H04L5/1469 , H04L7/00 , H04L27/36 , H04L27/38 , H04W88/02
Abstract: Reconfiguring a transceiver design using a plurality of frequency synthesizers and a plurality of carrier aggregation (CA) receiver (Rx) and transmitter (Tx) chains, the method including: connecting a first frequency synthesizer to a first CA Tx chain; connecting the plurality of frequency synthesizers to the plurality of CA Rx chains, wherein a second frequency synthesizer of the plurality of frequency synthesizers is connected as a shared synthesizer to a first CA Rx chain and a second CA Tx chain.
Abstract translation: 使用多个频率合成器和多个载波聚合（CA）接收机（Rx）和发射机（Tx）链重新配置收发器设计，所述方法包括：将第一频率合成器连接到第一CA Tx链; 将多个频率合成器连接到多个CA Rx链，其中多个频率合成器中的第二频率合成器作为共享合成器连接到第一CA Rx链和第二CA Tx链。
-
公开(公告)号：US09473091B2
公开(公告)日：2016-10-18
申请号：US14620823
申请日：2015-02-12
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Hassan , Bhushan Shanti Asuri , Apsara Ravish Suvarna , Youngchang Yoon
CPC classification number: H03F3/45632 , H03F1/223 , H03F3/245 , H03F3/45188 , H03F2200/09 , H03F2200/378 , H03F2203/45024 , H03F2203/45082 , H03F2203/45084 , H03F2203/45204 , H03F2203/45481 , H03F2203/45631 , H03F2203/45638 , H03F2203/45706 , H03F2203/45731
Abstract: A differential amplifier having a tunable filter is disclosed. The tunable filter may attenuate some common-mode signals while not affecting amplification of differential signals. The tunable filter may include a resonant circuit to select frequencies of common-mode signals to attenuate. The resonant circuit may include a variable capacitor series-coupled to an inductor. A resonant frequency of the resonant circuit may be determined, in part, by a capacitance value of the variable capacitor.
Abstract translation: 公开了一种具有可调谐滤波器的差分放大器。 可调谐滤波器可以衰减一些共模信号，而不影响差分信号的放大。 可调滤波器可以包括谐振电路，以选择共模信号的频率来衰减。 谐振电路可以包括串联耦合到电感器的可变电容器。 谐振电路的谐振频率可以部分地由可变电容器的电容值确定。
-
公开(公告)号：US09397711B2
公开(公告)日：2016-07-19
申请号：US14083240
申请日：2013-11-18
Applicant: QUALCOMM Incorporated
CPC classification number: H04B1/0475 , H04B17/10 , H04B17/13 , H04B2001/0425 , H04L27/361 , H04L27/367
Abstract: Exemplary embodiments are related to digital pre-distortion in envelope tracking systems. A device may include an amplitude modulation-to-phase modulation (AM-PM) distortion unit configured to generate an AM-PM distortion component in response to receipt of phase data of an input transmit signal. The device may also include a local oscillator (LO) path coupled to the distortion unit and configured to convey a local oscillator (LO) signal that varies based on the AM-PM distortion component.
Abstract translation: 示例性实施例涉及包络跟踪系统中的数字预失真。 设备可以包括被配置为响应于接收到输入发射信号的相位数据而产生AM-PM失真分量的幅度调制 - 相位调制（AM-PM）失真单元。 该装置还可以包括耦合到失真单元并被配置为传送基于AM-PM失真分量变化的本地振荡器（LO）信号的本地振荡器（LO）路径。
-
Patent Agency Ranking
公开(公告)号：US20140167864A1
公开(公告)日：2014-06-19
申请号：US13775026
申请日：2013-02-22
Applicant: QUALCOMM INCORPORATED
IPC: H03G9/24
CPC classification number: H03G9/24 , H03F1/223 , H03F1/42 , H03F1/565 , H03F3/193 , H03F3/245 , H03F2200/06 , H03F2200/111 , H03F2200/36 , H03F2200/378 , H03F2200/387 , H03F2200/39 , H03F2200/391 , H03F2200/534
Abstract: A tunable wide band driver amplifier is disclosed. In an exemplary embodiment, an apparatus includes a first band selection circuit selectively connected between an output terminal of an amplifier and a circuit ground. The first band selection circuit configured to adjust an amplification band from a first frequency band to a second frequency band. The apparatus also includes a first harmonic reduction circuit selectively connected between the first band selection circuit and the circuit ground and configured to reduce 2nd harmonic frequencies associated with the first frequency band when the amplification band is set to the first frequency band.
Abstract translation: 公开了一种可调宽带驱动放大器。 在示例性实施例中，一种装置包括选择性地连接在放大器的输出端和电路接地之间的第一频带选择电路。 第一频带选择电路，被配置为将放大频带从第一频带调整到第二频带。 该装置还包括选择性地连接在第一频带选择电路和电路地之间的第一谐波减小电路，并被配置为当放大频带被设置为第一频带时，减少与第一频带相关联的二次谐波频率。
-
公开(公告)号：US20130208826A1
公开(公告)日：2013-08-15
申请号：US13765667
申请日：2013-02-12
Applicant: QUALCOMM INCORPORATED
Inventor： Bhushan Shanti Asuri , Shrenik Patel
IPC: H04L25/08
CPC classification number: H04L25/08 , H04B1/0475
Abstract: An apparatus for reducing spurs is described. The apparatus includes a coarse digital to analog converter (DAC). The apparatus also includes a correction term generator. The correction term generator generates a correction term. The correction term has an amplitude within a dynamic range of the coarse digital to analog converter (DAC). The apparatus also includes a baseband filter. The correction term is selected such that the baseband filter reduces the correction term to an amplitude approximating that of a spur in a transmit signal. The correction term is used to reduce a spur.
Abstract translation: 描述了用于减少杂散的装置。 该装置包括粗略的数模转换器（DAC）。 该装置还包括校正项发生器。 校正项发生器产生校正项。 校正项具有在粗略数模转换器（DAC）的动态范围内的振幅。 该装置还包括基带滤波器。 校正项被选择为使得基带滤波器将校正项减小到接近发射信号中的杂波的幅度。 修正项用于减少刺激。
-
公开(公告)号：US12249966B2
公开(公告)日：2025-03-11
申请号：US18648789
申请日：2024-04-29
Applicant: QUALCOMM INCORPORATED
Inventor： Yung-Chung Lo , Hyejeong Song , Bhushan Shanti Asuri , Sahar Nozari
Abstract: A load line impedance modulation circuit includes a magnetic circuit, an adjustable capacitance coupled to an output of the magnetic circuit, and a plurality of adjustable resistances coupled to the output of the magnetic circuit, wherein the plurality of adjustable resistances are configured to select from available output ports, an impedance presented by the load line impedance modulation circuit being adjustable dependent on at least a number of selected output ports.
-
公开(公告)号：US12146902B2
公开(公告)日：2024-11-19
申请号：US18306616
申请日：2023-04-25
Applicant: QUALCOMM Incorporated
Inventor： Abdellatif Bellaouar , Arul Balasubramaniyan , Gurkanwal Singh Sahota , Muhammad Hassan , Jorge Garcia , Bhushan Shanti Asuri , Ravi Sridhara , Omar Essam El-Aassar , Chinmaya Mishra
IPC: G01R21/10 , G01R21/133 , H03F3/45 , H03M1/12
Abstract: In certain aspects, a method is provided for measuring power using a resistive element coupled between a power amplifier and an antenna. The method includes squaring a voltage from a first terminal of the resistive element to obtain a first signal, squaring a voltage from a second terminal of the resistive element to obtain a second signal, and generating a measurement signal based on a difference between the first signal and the second signal. In some implementations, the resistive element is implemented with a power switch.
-
公开(公告)号：US11949175B2
公开(公告)日：2024-04-02
申请号：US17485332
申请日：2021-09-25
Applicant: QUALCOMM Incorporated
Inventor： Chuan Wang , Li Liu , Bhushan Shanti Asuri , Kevin Hsi-Huai Wang , Gurkanwal Singh Sahota
CPC classification number: H01Q9/0442 , H01L23/66 , H01Q1/2283 , H01Q1/243 , H01Q1/50 , H01Q5/50 , H01Q21/28 , H01Q23/00 , H01L2223/6677
Abstract: Designs and techniques for manufacturing microelectronic antenna tuners are provided. An example microelectronic antenna system includes a radio frequency integrated circuit comprising a plurality of radio frequency signal ports disposed in a first area, a plurality of tuning devices disposed in a second area of the radio frequency integrated circuit, at least one antenna element disposed on a substrate coupled to the radio frequency integrated circuit, and at least one feedline disposed in the substrate and configured to communicatively couple the at least one antenna element, at least one of the plurality of tuning devices, and one of the plurality of radio frequency signal ports.
-
-
-
-
-
-
-
-
-
Search Results
53
records
(took 0.02 seconds)
