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    Radio frequency (RF) receiver with dynamic frequency planning and method therefor
    3.
    发明授权
    Radio frequency (RF) receiver with dynamic frequency planning and method therefor 有权
    具有动态频率规划的射频（RF）接收机及其方法

    公开(公告)号：US08463223B2

    公开(公告)日：2013-06-11

    申请号：US13524909

    申请日：2012-06-15

    Applicant: Terry Dickey ,  Gerald Champagne ,  Brian Mirkin

    Inventor： Terry Dickey ,  Gerald Champagne ,  Brian Mirkin

    IPC: H04B1/00

    CPC classification number: H03J3/02 ,  H04B15/02 ,  H04B2215/064 ,  H04B2215/065

    Abstract: A radio frequency (RF) receiver comprises an analog receiver, a digital processor, a clock synthesizer, and a microcontroller. The analog receiver has an input for receiving an RF input signal, and an output for providing a digital intermediate frequency (IF) signal. The digital signal processor has a first input for receiving the digital IF signal, a second input for receiving a clock signal, and a signal output for providing an IF output signal. The clock synthesizer has an input for receiving a clock control signal, and an output for providing the clock signal. The a microcontroller has an input for receiving a channel selection signal, wherein the microcontroller provides the clock control signal to control a frequency of the clock signal dynamically in response to a channel selection input to reduce interference of sub-harmonics created by the clock signal on the analog receiver.

    Abstract translation: 射频（RF）接收机包括模拟接收机，数字处理器，时钟合成器和微控制器。 模拟接收机具有用于接收RF输入信号的输入端和用于提供数字中频（IF）信号的输出端。 数字信号处理器具有用于接收数字IF信号的第一输入端，用于接收时钟信号的第二输入端和用于提供IF输出信号的信号输出端。 时钟合成器具有用于接收时钟控制信号的输入端和用于提供时钟信号的输出端。 微控制器具有用于接收信道选择信号的输入端，其中微控制器提供时钟控制信号以响应于信道选择输入来动态地控制时钟信号的频率，以减少由时钟信号产生的次谐波的干扰 模拟接收机。

    Non-linear circuit
    4.
    发明申请
    Non-linear circuit 审中-公开
    非线性电路

    公开(公告)号：US20070046272A1

    公开(公告)日：2007-03-01

    申请号：US11416777

    申请日：2006-05-03

    Applicant: Kazuo Kawai

    Inventor： Kazuo Kawai

    IPC: G05F1/00

    CPC classification number: H03J3/02

    Abstract: A non-linear circuit includes a non-linear basic circuit which is provided with an op amplifier, negative feedback circuits thereof, a positive feedback circuit thereof, an input resistor and a second input resistor and transforms an input control voltage into a non-linear basic control voltage; a weighting circuit which includes voltage division resistors and divides the input control voltage; an offset voltage applying circuit which includes an offset voltage source and generates an offset voltage; and an adding circuit which includes a second op amplifier, negative feedback circuits thereof and third, fourth and fifth input resistors thereof and which adds the non-linear basic control voltage, division control voltage and offset voltage together and outputs the result of addition thereof. A controlled load circuit including a non-linear element is connected to the output of the second op amplifier.

    Abstract translation: 非线性电路包括非线性基本电路，其具有运算放大器，其负反馈电路，正反馈电路，输入电阻器和第二输入电阻器，并将输入控制电压变换为非线性 基本控制电压; 加权电路，包括分压电阻器，并分压输入控制电压; 偏移电压施加电路，其包括偏移电压源并产生偏移电压; 以及加法电路，其包括第二运算放大器，其负反馈电路及其第三，第四和第五输入电阻器，并将非线性基本控制电压，分频控制电压和失调电压加在一起，并输出其相加结果。 包括非线性元件的受控负载电路连接到第二运算放大器的输出端。

    NONUNIFORM CORRUGATED DIAPHRAGM FOR MEMS TUNERS AND ACTUATORS
    6.
    发明申请
    NONUNIFORM CORRUGATED DIAPHRAGM FOR MEMS TUNERS AND ACTUATORS 有权
    用于MEMS调谐器和执行器的非谐振式压电膜

    公开(公告)号：US20160336922A1

    公开(公告)日：2016-11-17

    申请号：US15098969

    申请日：2016-04-14

    Applicant: Purdue Research Foundation

    Inventor： Juan Zeng ,  Zhengan Yang ,  Dimitrios Peroulis

    IPC: H03J3/02 ,  H01P5/08 ,  H01P1/207 ,  H01P7/06

    CPC classification number: H01P7/06 ,  H01H59/00 ,  H01P1/205 ,  H01P1/2053 ,  H01P1/208 ,  H01P7/065 ,  H03H2003/027 ,  H03J3/02

    Abstract: A cavity resonator tuning diaphragm comprising a plurality of inner corrugations, the plurality of inner corrugations having a first depth. An outer corrugation located between the plurality of inner corrugations and a perimeter of the diaphragm is also included, the outer corrugation having a second depth greater than the first depth. The addition of the outer deep corrugation provides increased thermal stability and reduced required actuation voltage.

    Abstract translation: 一种空腔谐振器调谐膜，包括多个内部波纹，所述多个内部波纹具有第一深度。 还包括位于多个内部波纹之间的外部波纹和隔膜的周边，外部波纹具有大于第一深度的第二深度。 外部深波纹的添加提供了增加的热稳定性并降低了所需的致动电压。

    Distortion analyzer with automatic tuning circuit
    7.
    发明授权
    Distortion analyzer with automatic tuning circuit 失效
    具有自动调谐电路的失真分析仪

    公开(公告)号：US3916296A

    公开(公告)日：1975-10-28

    申请号：US53280574

    申请日：1974-12-16

    Applicant: HEWLETT PACKARD YOKOGAWA

    Inventor： NARIMATSU YOH ,  KITO SHIRO

    IPC: G01R23/20 ,  H03H7/065 ,  H03J3/02 ,  G01R17/00 ,  G05F1/00

    CPC classification number: G01R23/20 ,  H03J3/02

    Abstract: An apparatus utilizing a parallel-T circuit bridge achieves improved low distortion measurements. To tune the bridge, two of the bridge components that do not interact with each other in the vicinity of the frequency to which the circuit is being tuned, are made variable. By adjusting these components, the bridge is easily adjustable without a large number of adjustments and readjustments. Since there is little interaction between these components, this circuit configuration is easily adaptable to automatic tuning.

    Abstract translation: 利用并行T电路桥的装置实现了改进的低失真测量。 为了调谐桥，在电路正在调谐的频率附近彼此不相互作用的两个桥组件是可变的。 通过调整这些部件，桥梁可以轻松调节，无需大量的调整和重新调整。 由于这些组件之间几乎没有交互作用，所以该电路配置很容易适应于自动调谐。

    ADAPTIVE SELF-TUNABLE ANTENNA SYSTEM AND METHOD
    10.
    发明申请
    ADAPTIVE SELF-TUNABLE ANTENNA SYSTEM AND METHOD 有权
    自适应自适应天线系统和方法

    公开(公告)号：US20150162897A1

    公开(公告)日：2015-06-11

    申请号：US14100716

    申请日：2013-12-09

    Applicant: Shure Acquistion Holdings, Inc.

    Inventor： Christopher Zachara

    IPC: H03J3/02

    CPC classification number: H03J3/02 ,  H01Q1/22 ,  H01Q9/145 ,  H01Q21/28 ,  H04R2420/07

    Abstract: Adaptive self-tunable antenna systems and methods are provided including a closed-loop system for sensing near-field RF signals of transmitted RF signals and tuning an antenna or switching between multiple antennas, so that the strength of the transmitted RF signals is maximized. A sensing antenna detects the near-field RF signal, which is filtered and converted to an RF strength control signal that can be used to generate an antenna tuning control signal. An antenna tuner uses the antenna tuning control signal to keep the antenna in resonance by dynamically changing the electrical length of the antenna or switching between multiple antennas to maximize the strength of the radiated RF signal. Such antennas may be less prone to detuning due to interaction with human bodies or other objects. Dynamically matching the antennas to an RF power amplifier and low noise amplifier can improve stability, power efficiency, gain, noise figure, and receiver sensitivity.

    Abstract translation: 提供了自适应自适应天线系统和方法，包括用于感测发射的RF信号的近场RF信号并调谐天线或在多个天线之间进行切换的闭环系统，使得发射的RF信号的强度最大化。 感测天线检测近场RF信号，其被滤波并转换成可用于产生天线调谐控制信号的RF强度控制信号。 天线调谐器使用天线调谐控制信号通过动态地改变天线的电长度或在多个天线之间切换来保持天线谐振，以使辐射的RF信号的强度最大化。 这样的天线可能由于与人体或其他物体的相互作用而不太容易失谐。 将天线动态匹配到RF功率放大器和低噪声放大器可以提高稳定性，功率效率，增益，噪声系数和接收器灵敏度。

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