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    • 12. 发明授权
    • Method and apparatus for providing impedance matching for high-frequency signal transmitter
    • 提供高频信号发射机阻抗匹配的方法和装置
    • US08233851B2
    • 2012-07-31
    • US12699112
    • 2010-02-03
    • Joo Young JeonSang Hwa JungJung Hyun KimYoung Kwon
    • Joo Young JeonSang Hwa JungJung Hyun KimYoung Kwon
    • H04B1/04H04B17/00
    • H04B1/04
    • In accordance with another representative embodiment, a high-frequency signal transmitter a power amplifier configured to supply a high-frequency signal; an antenna configured to transmit the high-frequency signal; a transmission line configured to transfer the high-frequency signal from the power amplifier to the antenna; and an impedance matching circuit connected to the transmission line. The high-frequency signal transmitter also comprises a mismatch detector. The mismatch detector is configured to designate a comparatively poor linearity region and a comparatively good linearity region by dividing a Smith chart into the two regions based on Adjacent Channel Power Ratio (ACPR) contours drawn on the Smith chart at a point on the transmission line where the impedance matching circuit is connected, to measure a time-dependent reflection coefficient of the high-frequency signal transmitter in terms of a phase and a magnitude, to determine whether the reflection coefficient is located in the comparatively poor linearity region or the comparatively good linearity region, and based on a result of the determination, to improve the linearity of the high-frequency signal transmitter.
    • 根据另一个代表性实施例,一种高频信号发射机,被配置为提供高频信号的功率放大器; 配置为发送高频信号的天线; 传输线,被配置为将高频信号从功率放大器传送到天线; 以及与传输线连接的阻抗匹配电路。 高频信号发射机还包括不匹配检测器。 不匹配检测器被配置为通过基于在传输线上的一点上在史密斯圆图上绘制的相邻信道功率比(ACPR)轮廓将史密斯圆图划分成两个区域来指定相对较差的线性区域和相对良好的线性度区域,其中 连接阻抗匹配电路,根据相位和幅度测量高频信号发射器的时间相关反射系数,以确定反射系数是否位于相对较差的线性区域或较好的线性度 区域,并且基于确定的结果,提高高频信号发射机的线性度。
    • 14. 发明授权
    • Multi-aperture acoustic horn
    • 多孔声喇叭
    • US08199953B2
    • 2012-06-12
    • US12261244
    • 2008-10-30
    • Osvaldo Buccafusca
    • Osvaldo Buccafusca
    • H04R1/20
    • G10K11/025
    • A device, for transmitting or receiving ultrasonic signals, includes a transducer and an acoustic horn. The transducer is configured to convert between electrical energy and the ultrasonic signals, and may be a micro electromechanical system (MEMS) transducer. The acoustic horn is coupled to the transducer, and includes multiple apertures through which the ultrasonic signals are transmitted or received in order to manipulate at least one of a radiation pattern, frequency response or magnitude of the ultrasonic signals. The multiple apertures have different sizes.
    • 用于发送或接收超声信号的装置包括换能器和声喇叭。 换能器被配置为在电能和超声波信号之间转换,并且可以是微机电系统(MEMS)换能器。 声喇叭耦合到换能器,并且包括多个孔,超声波信号通过该孔被发送或接收,以便操纵超声信号的辐射图,频率响应或幅度中的至少一个。 多个孔径具有不同的尺寸。
    • 15. 发明授权
    • Method of manufacturing a piezoelectric resonator having improved temperature compensation
    • 制造具有改善的温度补偿的压电谐振器的方法
    • US08186028B2
    • 2012-05-29
    • US12344829
    • 2008-12-29
    • Robert Aigner
    • Robert Aigner
    • H04R17/10H05K7/02
    • H03H9/02102Y10T29/42Y10T29/49128Y10T29/49155
    • A method for manufacturing a piezoelectric resonator, comprising the step of: producing an arrangement comprising a piezoelectric layer having a resonance frequency temperature coefficient of a first sign, a first and a second electrode. The piezoelectric layer is arranged between the first and second electrodes, and a compensation layer is arranged between the first electrode and the piezoelectric layer. The compensation layer has a compensation material having a second resonance frequency temperature coefficient of a second sign opposite to the first one. The producing comprises providing the compensation material with a modification material to increase a conductivity of the compensation layer in a direction between the first electrode and the piezoelectric layer.
    • 一种制造压电谐振器的方法,包括以下步骤:制造包括具有第一符号的共振频率温度系数的压电层,第一和第二电极的布置。 压电层设置在第一和第二电极之间,并且补偿层设置在第一电极和压电层之间。 补偿层具有补偿材料,其具有与第一共振频率温度系数相反的第二共振频率温度系数。 该制造方法包括向所述补偿材料提供改性材料,以在所述第一电极和所述压电层之间的方向上增加所述补偿层的导电性。
    • 18. 发明授权
    • Semiconductor seal ring and method of manufacture thereof
    • 半导体密封圈及其制造方法
    • US08143105B2
    • 2012-03-27
    • US12466064
    • 2009-05-14
    • Bradley BarberTony LoBiancoDavid T. Young
    • Bradley BarberTony LoBiancoDavid T. Young
    • H01L21/44H01L21/48H01L21/50
    • H01L21/78
    • An improved semiconductor seal ring and method therefore is described. The seal ring comprises a thick layer wherein at least a portion of the thick layer is removed from a singulation street prior to singulation, thereby avoiding damage to the thick layer during the singulation process. A thin moisture-proof barrier layer is preferably deposited over at least a portion of the thick layer to seal at least an edge of the thick layer. A thick nonmetallic layer preferably used for fabrication of active circuit elements may advantageously be employed as the thick layer (for example, an aluminum nitride (AlN) layer in, for example, a bulk acoustic wave (BAW) filter device). A thin amorphous nonmetallic layer (e.g., a silicon nitride (SiN) layer) may preferably be deposited over the thick layer. Alternatively, other materials may be used.
    • 因此,描述了改进的半导体密封环和方法。 密封环包括厚层,其中在切割之前,从切割街道中去除厚层的至少一部分,从而避免在切割过程中损坏厚层。 优选在厚层的至少一部分上沉积薄的防湿屏障层,以密封厚层的至少一个边缘。 优选用于制造有源电路元件的厚非金属层可以有利地用作厚层(例如,例如在体声波(BAW)滤波器装置中的氮化铝(AlN)层)。 薄的非晶非金属层(例如,氮化硅(SiN)层)可优选沉积在厚层上。 或者,也可以使用其他材料。
    • 20. 发明申请
    • POWER AMPLIFIER WITH SELECTABLE LOAD IMPEDANCE AND METHOD OF AMPLIFYING A SIGNAL WITH SELECTABLE LOAD IMPEDANCE
    • 具有可选负载阻抗的功率放大器和放大具有可选负载阻抗的信号的方法
    • US20120013401A1
    • 2012-01-19
    • US12835853
    • 2010-07-14
    • Moon-Suk JEONChan Hoe KOOHyung Bin LEESang Hwa JUNG
    • Moon-Suk JEONChan Hoe KOOHyung Bin LEESang Hwa JUNG
    • H03F1/30
    • H03F1/56H03F1/02H03F2200/387H03F2200/513
    • A device includes: a power amplifier, including a supply voltage terminal, an input port and an output port, and the power amplifier being configured to receive a supply voltage at the supply voltage terminal, an input signal through the input port, to amplify the received input signal, and to output an amplified output signal through the output port; a variable impedance matching circuit having an input terminal connected to the output port of the power amplifier, and having an output terminal for being connected to a load; and a controller including a voltage measuring unit configured to measure the supply voltage, to compare the measured supply voltage with a threshold voltage, and to control the variable impedance matching circuit based on a result of the comparison so as to adjust a load impedance seen by the power amplifier at its output port.
    • 一种设备包括:功率放大器,包括电源电压端子,输入端口和输出端口,并且功率放大器被配置为在电源电压端子处接收通过输入端口的输入信号的电源电压,以放大 接收输入信号,并通过输出端口输出放大的输出信号; 可变阻抗匹配电路,其具有连接到功率放大器的输出端口的输入端子,并具有用于连接到负载的输出端子; 以及控制器,其包括电压测量单元,其被配置为测量所述电源电压,以将所测量的电源电压与阈值电压进行比较,并且基于所述比较的结果来控制所述可变阻抗匹配电路,以便调整由 功率放大器在其输出端口。