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204 条记录 (耗时 0.015 秒)

    Ultra wideband impulse radar
    31.
    发明授权
    Ultra wideband impulse radar 有权
    超宽带脉冲雷达

    公开(公告)号：US07830989B2

    公开(公告)日：2010-11-09

    申请号：US11555210

    申请日：2006-10-31

    申请人： Farrokh Mohamadi

    发明人： Farrokh Mohamadi

    IPC分类号： H04L27/22

    CPC分类号： H01Q21/0006 ,  G01S7/032 ,  G01S13/0209 ,  H01Q3/36 ,  H01Q21/0093 ,  H01Q21/065 ,  H01Q23/00 ,  H03F1/22 ,  H03F1/223 ,  H03F3/193 ,  H03F3/602 ,  H03F2200/378 ,  H03F2200/405 ,  H03F2200/451 ,  H03F2200/543 ,  H03J3/185

    摘要： In one embodiment, a wafer scale radar antenna module (WSAM) is provided that includes: a substrate; a plurality of antennas adjacent the substrate; an RF feed network adjacent the substrate, the RF feed network coupling to a distributed plurality of amplifiers integrated with the substrate, wherein the RF feed network and the distributed plurality of amplifiers are configured to form a resonant network such that if a timing signal is injected into an input port of the RF feed network, the resonant network oscillates to provide a globally synchronized RF signal to a plurality of integrated antenna circuits, wherein each integrated antenna circuits includes a corresponding subset of antennas from the plurality of antennas, and wherein each integrated antenna circuit includes a pulse shaping circuit having a plurality of selectable delay paths, each pulse shaping circuit being configured to rectify and level shift a version of the globally synchronized signal through selected ones of the selectable delay paths to provide an pulse train output signal; and a controller operable to control each integrated antenna circuit such that only selected pulses from the pulse train output signal are transmitted through the integrated antenna circuit's subset of antennas to form transmitted pulses.

    摘要翻译： 在一个实施例中，提供了一种晶片级雷达天线模块（WSAM），其包括：基板; 与基板相邻的多个天线; 邻近衬底的RF馈送网络，RF馈送网络耦合到与衬底集成的分布式多个放大器，其中RF馈送网络和分布式多个放大器被配置为形成谐振网络，使得如果注入定时信号 进入RF馈送网络的输入端口，谐振网络振荡以向多个集成天线电路提供全局同步的RF信号，其中每个集成天线电路包括来自多个天线的对应的天线子集，并且其中每个集成 天线电路包括具有多个可选择的延迟路径的脉冲整形电路，每个脉冲整形电路被配置为通过选择的可选延迟路径对全局同步信号的版本进行整流和电平移位，以提供脉冲串输出信号; 以及控制器，其可操作以控制每个集成天线电路，使得仅来自所述脉冲串输出信号的所选脉冲通过所述集成天线电路的天线子集发送以形成发射脉冲。

    Re-configurable low noise amplifier utilizing feedback capacitors
    32.
    发明授权
    Re-configurable low noise amplifier utilizing feedback capacitors 有权
    利用反馈电容器重新配置低噪声放大器

    公开(公告)号：US07800450B2

    公开(公告)日：2010-09-21

    申请号：US12358419

    申请日：2009-01-23

    申请人： Jae-woo Park ,  Chang-sik Yoo

    发明人： Jae-woo Park ,  Chang-sik Yoo

    IPC分类号： H03F3/68

    CPC分类号： H03F3/193 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/378 ,  H03F2200/387 ,  H03F2200/429 ,  H03F2200/451

    摘要： A re-configurable low noise amplifier utilizing feedback capacitors is disclosed. The low noise amplifier has output transistors, capacitor switch cells, and capacitance distributors all in an output portion. The output transistors are for controlling selection of a specific frequency band in a wide band of frequencies. The capacitor switch cells are for adjusting a harmonic frequency for the specific frequency band. The capacitance distributor is for determining an amount of gain, and according to the gain, an output impedance feeds back to an input portion of the low noise amplifier for input matching. Since the output portion is at high impedance and suitable for a wide band of frequencies, input matching not only makes the low noise amplifier applicable to kinds of wireless communication standards, but also fulfills high gain and low noise figure.

    摘要翻译： 公开了一种利用反馈电容器的可重构低噪声放大器。 低噪声放大器具有输出晶体管，电容开关单元和电容分配器。 输出晶体管用于控制宽频带中的特定频带的选择。 电容开关单元用于调整特定频带的谐波频率。 电容分配器用于确定增益量，并且根据增益，输出阻抗反馈到低噪声放大器的输入部分用于输入匹配。 由于输出部分处于高阻抗并且适用于宽频带，输入匹配不仅使低噪声放大器适用于各种无线通信标准，而且还实现了高增益和低噪声系数。

    LOW-NOISE AMPLIFIER CIRCUIT AND RECEIVING SYSTEM
    33.
    发明申请
    LOW-NOISE AMPLIFIER CIRCUIT AND RECEIVING SYSTEM 有权
    低噪声放大器电路和接收系统

    公开(公告)号：US20090039964A1

    公开(公告)日：2009-02-12

    申请号：US12065433

    申请日：2006-08-22

    申请人： Katsumasa Hijikata ,  Joji Hayashi

    发明人： Katsumasa Hijikata ,  Joji Hayashi

    IPC分类号： H03F1/44

    CPC分类号： H03F1/0205 ,  H03F1/26 ,  H03F1/42 ,  H03F3/191 ,  H03F3/45183 ,  H03F2200/36 ,  H03F2200/372 ,  H03F2200/378 ,  H03F2200/391 ,  H03F2200/399 ,  H03F2203/45631 ,  H03F2203/45638

    摘要： In a broadband low-noise amplifier circuit to be used in a multichannel reception system, a capacitance of a variable capacitor (9) is controlled by a resonance frequency control circuit (4) so that a resonance frequency of a load unit (2) comprising the variable capacitor (9) and an inductor (10) matches a desired RF signal frequency. Therefore, high gain and broadband can be realized at the same time without increasing power consumption, and consequently, a reception system having reduced power consumption and high sensitivity for all channels can be realized.

    摘要翻译： 在用于多通道接收系统的宽带低噪声放大器电路中，可变电容器（9）的电容由谐振频率控制电路（4）控制，使得负载单元（2）的谐振频率包括 可变电容器（9）和电感器（10）匹配期望的RF信号频率。 因此，可以在不增加功耗的情况下同时实现高增益和宽带，从而可以实现对所有信道具有降低的功耗和高灵敏度的接收系统。

    LOW STRAIN VARIABLE FREQUENCY AMPLIFIER
    34.
    发明申请
    LOW STRAIN VARIABLE FREQUENCY AMPLIFIER 失效
    低应变频率放大器

    公开(公告)号：US20080157876A1

    公开(公告)日：2008-07-03

    申请号：US11950347

    申请日：2007-12-04

    申请人： Ogino Tsuyoshi ,  Iizuka Fumitaka ,  Nakajima Kunihiko

    发明人： Ogino Tsuyoshi ,  Iizuka Fumitaka ,  Nakajima Kunihiko

    IPC分类号： H03F1/34 ,  H03F3/04

    CPC分类号： H03F1/56 ,  H03F1/34 ,  H03F3/04 ,  H03F3/191 ,  H03F2200/111 ,  H03F2200/213 ,  H03F2200/222 ,  H03F2200/378 ,  H03F2200/42 ,  H03F2200/451 ,  H03H7/40

    摘要： A variable frequency amplifier suffering less deterioration of strain characteristic and capable of operating at plural frequencies is disclosed. In one aspect, a changeable amplifier comprises an amplifying element, a changeable matching circuit disposed at an input side of the amplifying element and including a first variable capacity element connected in series with a signal conductor and a second variable capacity element connected in parallel with the signal conductor, and a control circuit for controlling the changeable matching circuit. Based on a feedback signal, the control circuit applies DC bias voltages to the first variable capacity element and the second variable capacity element of the changeable matching circuit and also applies thereto a correction signal.

    摘要翻译： 公开了一种可变频率放大器，其应变特性较差并能够以多个频率工作。 一方面，可变放大器包括放大元件，设置在放大元件的输入侧的可变匹配电路，包括与信号导体串联连接的第一可变电容元件和与第一可变电容元件并联连接的第二可变电容元件 信号导体和用于控制可变匹配电路的控制电路。 基于反馈信号，控制电路将DC偏置电压施加到可变匹配电路的第一可变电容元件和第二可变电容元件，并向其施加校正信号。

    Apparatus and method for processing of amplifier linearization signals
    35.
    发明申请
    Apparatus and method for processing of amplifier linearization signals 失效
    放大器线性化信号处理装置及方法

    公开(公告)号：US20070222513A1

    公开(公告)日：2007-09-27

    申请号：US11371543

    申请日：2006-03-09

    申请人： Michael Kossor ,  Michael Rauh

    发明人： Michael Kossor ,  Michael Rauh

    IPC分类号： H03F1/00

    CPC分类号： H03F1/3235 ,  H03F2200/378 ,  H03F2200/393

    摘要： A feed-forward amplifier includes a main amplifier having input signals and amplified output signals and an error amplifier for amplifying distortion signals to be added to the amplified output signals of the main amplifier to produce an amplifier output. A pilot tone modulation and recovery circuit modulates a pilot tone to be coupled to the input signals of the main amplifier and recovers the pilot tone from the amplifier output. The pilot tone modulation and recovery circuit includes a digital filter and a signal source. The signal source is used to both modulate the pilot tone and control the digital filter for recovering the pilot tone.

    摘要翻译： 前馈放大器包括具有输入信号和放大输出信号的主放大器和用于放大要与主放大器的放大输出信号相加的失真信号的误差放大器，以产生放大器输出。 导频音调制和恢复电路调制与主放大器的输入信号耦合的导频音，并从放大器输出中恢复导频音。 导频音调制和恢复电路包括数字滤波器和信号源。 信号源用于调制导频音，并控制数字滤波器以恢复导频音。

    High frequency amplifier
    36.
    发明授权
    High frequency amplifier 失效
    高频放大器

    公开(公告)号：US06731175B1

    公开(公告)日：2004-05-04

    申请号：US10282000

    申请日：2002-10-29

    申请人： Yung-Hung Chen

    发明人： Yung-Hung Chen

    IPC分类号： H03F304

    CPC分类号： H03F1/223 ,  H03F2200/213 ,  H03F2200/222 ,  H03F2200/243 ,  H03F2200/378 ,  H03F2200/387 ,  H03F2200/399 ,  H03F2200/414 ,  H03F2200/421 ,  H03F2200/492

    摘要： A high frequency amplifier. The amplifier includes two transistors for signal amplification, and input and output matching circuits. There are variable capacitors and resistors in the matching input and output circuits. A received signal strength indicator receives the band-pass filtered intermediate-frequency signal and generates an indication signal corresponding to the amplitude of the received signal. The variable capacitors and resistors are tuned by the indication signal from the received signal strength indicator. Thus, the gain of the high frequency amplifier is automatically controlled.

    摘要翻译： 高频放大器。 该放大器包括两个用于信号放大的晶体管，以及输入和输出匹配电路。 匹配的输入和输出电路中有可变电容和电阻。 接收到的信号强度指示器接收带通滤波的中频信号，并产生与接收信号的振幅相对应的指示信号。 可变电容器和电阻器通过来自接收信号强度指示器的指示信号进行调谐。 因此，高频放大器的增益被自动控制。

    RF Switch with Split Tunable Matching Network
    38.
    发明申请
    RF Switch with Split Tunable Matching Network 审中-公开

    公开(公告)号：US20190140602A1

    公开(公告)日：2019-05-09

    申请号：US16029333

    申请日：2018-07-06

    申请人： pSemi Corporation

    发明人： Tero Tapio Ranta ,  Chih-Chieh Cheng ,  Kevin Roberts

    IPC分类号： H03F1/56 ,  H03F3/19 ,  H03F3/213 ,  H03F3/195

    CPC分类号： H03F1/56 ,  H03F3/19 ,  H03F3/195 ,  H03F3/213 ,  H03F2200/378 ,  H03F2200/387 ,  H03F2200/451

    摘要： An improved architecture for a radio frequency (RF) power amplifier, impedance matching network, and selector switch. One aspect of embodiments of the invention is splitting the functionality of a final stage impedance matching network (IMN) into two parts, comprising a base set of off-chip IMN components and an on-chip IMN tuning component. The on-chip IMN tuning component may be a digitally tunable capacitor (DTC). In one embodiment, an integrated circuit having a power amplifier, an on-chip IMN tuner, and a selector switch is configured to be coupled to an off-chip set of IMN components. In another embodiment, an integrated circuit having an on-chip IMN tuner and a selector switch is configured to be coupled through an off-chip set of IMN components to a separate integrated circuit having an RF power amplifier.