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    Transmit receive radio frequency switch
    12.
    发明授权
    Transmit receive radio frequency switch 有权

    公开(公告)号：US11700028B2

    公开(公告)日：2023-07-11

    申请号：US17140301

    申请日：2021-01-04

    Applicant: DSP Group Ltd.

    Inventor： Sergey Anderson ,  Nadav Snir

    IPC: H03K17/693 ,  H04B1/44

    CPC classification number: H04B1/44 ,  H03K17/693

    Abstract: A TX/RX RF switch that may include a reception path; and a transmission path that has an antenna port, a transmission input port, and transmission transistors. The transmission transistors have source-bulk connections. The reception path has an antenna port, a reception output port, and reception transistors. The reception path includes a first reception transistor that is closest to the antenna port, out of the reception transistors, and has a source-bulk connection, and at least one other reception transistor that has a bulk-to-ground connection. The reception transistors and the transmission transistors are CMOS transistors.

    Low noise amplifier with improved linearity in low gain mode
    13.
    发明授权
    Low noise amplifier with improved linearity in low gain mode 有权

    公开(公告)号：US11418156B2

    公开(公告)日：2022-08-16

    申请号：US17008472

    申请日：2020-08-31

    Applicant: DSP Group Ltd.

    Inventor： Sergey Anderson

    IPC: H03F3/19 ,  H03F1/32

    Abstract: A low noise amplifier that includes a first cascode, a second cascode, an input circuit, an output node, a first switch, and a second switch. A source of a first common gate transistor and a drain of a first common source transistor of the first cascode are coupled to a first node of the low noise amplifier. The output node is coupled to a drain of the first common gate transistor, and to a drain of a second common gate transistor of the second cascode, thereby coupling the first cascode and the second cascode to a power supply via a load. The first switch is coupled between a gate of the first common gate transistor and the power supply. The second switch is coupled between the first node and the power supply. The first switch is configured to be open and the second switch is configured to be closed when the low noise amplifier operates at a first operational node. The first switch is configured to be closed and the second switch is configured to be open when the low noise amplifier operates at a second operational node that differs from the first operational mode by at least a gain of the low noise amplifier.

    RADIO FREQUENCY DIGITAL TO ANALOG CONVERSION
    14.
    发明申请
    RADIO FREQUENCY DIGITAL TO ANALOG CONVERSION 有权

    公开(公告)号：US20220158596A1

    公开(公告)日：2022-05-19

    申请号：US17455009

    申请日：2021-11-15

    Applicant: DSP Group Ltd.

    Inventor： Sergey Anderson

    IPC: H03F3/21 ,  H03M1/10

    Abstract: There is provided a RF-DAC that may include (i) a first PAM that includes a first group of first power amplifiers of different amplifications, (ii) a second PAM that includes a second group of second power amplifiers of different amplifications; (iii) a load that includes an output port and a transformer; (iv) power amplifiers control units, and a transformer control unit. During a cycle of operation (i) each one of the first and second PAMs is configured to receive one or more power amplifiers digital control signals and activate a single power amplifier per each of the first and second PAMS, (ii) the transformer control unit is configured to receive a transformer digital control signal and control a transformer parameter of the transformer, and (iii) the transformer is configured to receive a first PAM output signal and a second PAM output signal, and output a transformer output signal that reflects digital information represented by the one or more power amplifiers digital control signals and the transformer digital control signal.

    CONFIGURABLE MULTIMODE MULTIBAND INTEGRATED DISTRIBUTED POWER AMPLIFIER
    18.
    发明申请
    CONFIGURABLE MULTIMODE MULTIBAND INTEGRATED DISTRIBUTED POWER AMPLIFIER 审中-公开
    可配置多模多路集成分布式功率放大器

    公开(公告)号：US20150070097A1

    公开(公告)日：2015-03-12

    申请号：US14540687

    申请日：2014-11-13

    Applicant: DSP Group, Ltd.

    Inventor： Abraham Bauer ,  Eli Schwartz ,  Ilya Sima ,  Lior Blanka ,  Sergey Anderson ,  Ron Pongratz ,  Alex Mostov

    IPC: H03F3/21 ,  H04B1/04 ,  H04W88/06 ,  H03F1/02 ,  H03F3/193

    CPC classification number: H03F3/211 ,  H03F1/02 ,  H03F1/0227 ,  H03F1/0261 ,  H03F3/19 ,  H03F3/193 ,  H03F3/21 ,  H03F3/24 ,  H03F3/45179 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/451 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H04B1/04 ,  H04B2001/045 ,  H04W88/06

    Abstract: A novel and useful configurable radio frequency (RF) power amplifier (PA) and related front end module (FEM) circuit that enables manipulation of the operating point of the power amplifier resulting in configurability, multimode and multiband operating capability. The configurable PA also provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configurable power amplifier is made up of one or more configurable sub-amplifiers having each constructed to have several orders of freedom (i.e. biasing points). Each sub-amplifier and its combiner path include active and passive elements. Manipulating one or more biasing points of each sub-amplifier, and therefore of the aggregate power amplifier as well, achieves multimode and multiband operation. Biasing points include, for example, the gain and saturation point, frequency response, linearity level and EVM. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provides efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.

    Abstract translation: 一种新颖有用的可配置射频（RF）功率放大器（PA）和相关的前端模块（FEM）电路，可以对功率放大器的工作点进行操作，从而实现可配置性，多模和多频带操作能力。 可配置PA还提供高线性度和功率效率，并满足现代无线通信标准（如802.11 WLAN，3G和4G蜂窝标准，蓝牙，ZigBee等）的要求。可配置功率放大器由一个或多个可配置子系统组成， 每个放大器被构造成具有几个自由度（即偏置点）。 每个子放大器及其组合器路径包括有源和无源元件。 操纵每个子放大器的一个或多个偏置点，并因此操纵集成功率放大器，实现多模和多频带操作。 偏移点包括例如增益和饱和点，频率响应，线性度和EVM。 具有以新颖配置布置的初级和次级绕组的集成多抽头变压器提供了由各个子放大器产生的功率的有效功率组合和传输到天线。

    LOW NOISE AMPLIFIER WITH IMPROVED LINEARITY IN LOW GAIN MODE
    19.
    发明申请
    LOW NOISE AMPLIFIER WITH IMPROVED LINEARITY IN LOW GAIN MODE 有权

    公开(公告)号：US20210091730A1

    公开(公告)日：2021-03-25

    申请号：US17008472

    申请日：2020-08-31

    Applicant: DSP Group Ltd.

    Inventor： Sergey Anderson

    IPC: H03F3/19 ,  H03F1/32

    Abstract: A low noise amplifier that includes a first cascode, a second cascode, an input circuit, an output node, a first switch, and a second switch. A source of a first common gate transistor and a drain of a first common source transistor of the first cascode are coupled to a first node of the low noise amplifier. The output node is coupled to a drain of the first common gate transistor, and to a drain of a second common gate transistor of the second cascode, thereby coupling the first cascode and the second cascode to a power supply via a load. The first switch is coupled between a gate of the first common gate transistor and the power supply. The second switch is coupled between the first node and the power supply. The first switch is configured to be open and the second switch is configured to be closed when the low noise amplifier operates at a first operational node. The first switch is configured to be closed and the second switch is configured to be open when the low noise amplifier operates at a second operational node that differs from the first operational mode by at least a gain of the low noise amplifier.

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