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    • 2. 发明授权
    • Stacked piezoelectric actuators to control waveguide phase shifters and method of manufacture thereof
    • 使用压电致动器控制波导相移器的相控阵天线及其制造方法
    • US06281766B1
    • 2001-08-28
    • US09088255
    • 1998-06-01
    • Hugh Robert MaloneDeborah Sue DendyDean Lawrence CookJames R. PhillipsRichard S. Kommrusch
    • Hugh Robert MaloneDeborah Sue DendyDean Lawrence CookJames R. PhillipsRichard S. Kommrusch
    • H01P118
    • H01Q3/26H01P1/182
    • Waveguide phase shifter (200, FIG. 2 and 300, FIG. 3) uses piezoelectric ceramics to implement a voltage variable actuator (270, 370) for moving at least one dielectric vane (255, 355) relative to a reference surface (206, 306) in a waveguide cavity (285, 385). In this manner, the phase shift in waveguide phase shifters (200, 300) is controlled. In one embodiment, actuator (270) comprises first piezoelectric wafer (210), second piezoelectric wafer (220), first metallic layer (230), second metallic layer (240), third metallic layer (250), mating surface (272) and spacer (265). Actuator (270) uses a stack of piezoelectric materials to establish a lever arm mechanism to establish vertical movement (294) and move dielectric vane (255). Actuator (370) uses a stack of piezoelectric materials to establish vertical movement (394) and move dielectric vane (355). Waveguide phase shifters (200, 300) are used in phased array antenna (400) operating at microwave frequencies.
    • 波导相移器(图2中的200,图3和图3)使用压电陶瓷来实现电压可变致动器(270,370),用于相对于参考表面(206,310)移动至少一个电介质叶片(255,355) 306)在波导腔(285,385)中。 以这种方式,波导相移器(200,300)中的相移被控制。 在一个实施例中,致动器(270)包括第一压电晶片(210),第二压电晶片(220),第一金属层(230),第二金属层(240),第三金属层(250) 间隔物(265)。 致动器(270)使用一堆压电材料来建立杠杆臂机构以建立垂直运动(294)并移动电介质叶片(255)。 致动器(370)使用一叠压电材料来建立垂直运动(394)并移动电介质叶片(355)。 在微波频率工作的相控阵天线(400)中使用波导相移器(200,300)。
    • 3. 发明授权
    • Voltage variable capacitor array and method of manufacture thereof
    • 电压可变电容器阵列及其制造方法
    • US06088214A
    • 2000-07-11
    • US88256
    • 1998-06-01
    • Hugh Robert MaloneJames R. PhillipsDonald W. ForstDeborah Sue DendyDean Lawrence Cook
    • Hugh Robert MaloneJames R. PhillipsDonald W. ForstDeborah Sue DendyDean Lawrence Cook
    • H01G5/16H01G5/01H01G4/228H01G5/06
    • H01G5/16
    • An array (100) of voltage variable capacitors (110) is provided in which voltage variable capacitors (110) are fabricated with piezoelectric displacement devices (150). Voltage variable capacitors (110) have first plates (120) which are coupled to displacement devices (150). First plates (120) are dielectrically coupled to second plates (130). Displacement device (150) has a stack of metallic layers (154), voltage variable material blocks (152), and voltage supply terminals (170) and (180). Voltage differences are established across voltage variable material blocks (152) using voltage supply terminals (170) and (180). A voltage difference causes a voltage variable material layer to change thickness, and this causes first plate (120) to move relative to second plate (130). Voltage variable material is selected from a group of piezoelectric ceramics, which can include lead-titanate (PbTiO.sub.3), lead-zirconate (PbZrO.sub.3), barium-titanate (BaTiO.sub.3), and lead-zirconate-titanate (PbZr.sub.x Ti.sub.1-x O.sub.3), where x varies from zero to one.
    • 提供了一种电压可变电容器(110)的阵列(100),其中用压电位移装置(150)制造电压可变电容器(110)。 电压可变电容器(110)具有联接到位移装置(150)的第一板(120)。 第一板(120)介电耦合到第二板(130)。 位移装置(150)具有堆叠的金属层(154),电压可变材料块(152)和电压供给端子(170)和(180)。 使用电压供应端子(170)和(180)在电压可变材料块(152)之间建立电压差。 电压差导致电压可变材料层改变厚度,并且这使得第一板(120)相对于第二板(130)移动。 电压变量材料选自一组压电陶瓷,其中可以包括钛酸铅(PbTiO3),锆酸铅(PbZrO3),钛酸钡(BaTiO3)和铅锆酸铅(PbZrxTi1-xO3),其中x 从零到一。
    • 5. 发明授权
    • Low cost beam steering planar array antenna
    • 低成本光束转向平面阵列天线
    • US06184827B2
    • 2001-02-06
    • US09258231
    • 1999-02-26
    • Deborah Sue DendyDavid Warren CormanStephen Chih-hung MaArcher David MungerKeith Vaclav Warble
    • Deborah Sue DendyDavid Warren CormanStephen Chih-hung MaArcher David MungerKeith Vaclav Warble
    • H01Q326
    • H01Q3/26H01Q3/36
    • A planar array antenna for use with an earth-based subscriber unit generates receive or transmit communications beams through the use of digital beamforming networks (210, 211) which provide beam steering in a first dimension. In another dimension, the communications beams are synthesized by way of a waveguide structure (300, FIG. 3) which is repeated for each row of the antenna array. The waveguide outputs are weighted due to the positioning of coupling slots (350) or coupling probes (450) which transfer carrier signals to and from each waveguide. The slots or coupling probes from the waveguides are coupled to a group of barium strontium titanate (BST) (360, FIG. 3) or micro-electromechanical systems (MEMS) switch (460, FIG. 4) phase shift elements which are under the control of a control network (221, 222, FIG. 2). The resulting signals are radiated by the antenna elements of the planar antenna array (310, FIG. 3) to form a communications beam.
    • 用于与基于地面的用户单元一起使用的平面阵列天线通过使用在第一维度中提供波束转向的数字波束成形网络(210,211)产生接收或发射通信波束。 在另一维度上,通过对天线阵列的每一行重复的波导结构(图3中的300)来合成通信波束。 由于耦合槽(350)或耦合探针(450)的定位,波导输出被加权,其将载波信号传送到每个波导和从每个波导传送载波信号。 来自波导的槽或耦合探针耦合到一组钛酸钡锶(BST)(360,图3)或微机电系统(MEMS)开关(460),图4中的相移元件 控制网络(221,222,图2)的控制。 所得到的信号由平面天线阵列(图3的310)的天线元件辐射以形成通信波束。
    • 6. 发明授权
    • Electronic scanning reflector antenna and method for using same
    • 电子扫描反射天线及其使用方法
    • US6091371A
    • 2000-07-18
    • US943810
    • 1997-10-03
    • Kenneth Vern BuerDavid Warren CormanDean L. CookDeborah Sue Dendy
    • Kenneth Vern BuerDavid Warren CormanDean L. CookDeborah Sue Dendy
    • H01Q3/44H01Q15/14H01Q25/00H01Q19/06
    • H01Q25/00H01Q15/148H01Q3/44
    • An antenna subsystem (120) which comprises an electronic scanning reflector antenna (400) is used for the formation of single and multiple beams. Reflecting surface (420) is covered with at least one dielectric layer (430) which is used to simultaneously and independently steer multiple beams. Electronic scanning reflector antenna (400) operates similar to a phased array antenna. ESRA (400) comprises a number of independent controllable reflecting surfaces (450) which are combined together in close proximity. Each one of the individual regions is covered by a dielectric layer, and the dielectric constant for each can be independently controlled. Electronic scanning reflector antennas (400, 600) are used in both space-based and terrestrial-based applications. Electronic scanning reflector antennas (400, 600) are used for both transmission and reception of electromagnetic signals.
    • 包括电子扫描反射器天线(400)的天线子系统(120)用于形成单个和多个光束。 反射表面(420)被至少一个介电层(430)覆盖,该电介质层用于同时且独立地引导多个光束。 电子扫描反射器天线(400)类似于相控阵天线。 ESRA(400)包括多个独立的可控反射表面(450),它们紧密组合在一起。 各个区域中的每一个被介电层覆盖,并且可以独立地控制每个区域的介电常数。 电子扫描反射天线(400,600)用于基于空间和地面的应用。 电子扫描反射天线(400,600)用于电磁信号的发射和接收。