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公开(公告)号：US20200169222A1
公开(公告)日：2020-05-28
申请号：US16614732
申请日：2018-05-23
申请人： Soitec
摘要： A method for minimizing harmonic distortion and/or intermodulation distortion of a radiofrequency signal propagating in a radiofrequency circuit formed on a semiconductor substrate coated with an electrically insulating layer, wherein a curve representing the distortion as a function of a power of the input or output signal exhibits a trough around a given power (PDip), the method comprises applying, between the radiofrequency circuit and the semiconductor substrate, an electrical potential difference (VGB) chosen so as to move the trough toward a given operating power of the radiofrequency circuit.
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公开(公告)号：US07904117B2
公开(公告)日：2011-03-08
申请号：US11202995
申请日：2005-08-12
申请人： Chinh H. Doan , Sohrab Emami-Neyestanak , John Marshall , Chuen-Shen Shung , Tim Arthur Williams , Robert W. Brodersen , Jeffrey M. Gilbert , Ada Shuk Yan Poon
发明人： Chinh H. Doan , Sohrab Emami-Neyestanak , John Marshall , Chuen-Shen Shung , Tim Arthur Williams , Robert W. Brodersen , Jeffrey M. Gilbert , Ada Shuk Yan Poon
CPC分类号： H04B7/0615 , H04B7/0617 , H04B7/0619
摘要： A method and apparatus is disclosed herein for wireless communication with adaptive beamforming. In one embodiment, the apparatus comprises a processor, a radio frequency (RF) transmitter having a digitally controlled phased array antenna coupled to and controlled by the processor to transmit content using adaptive beamforming, and an interface to a wireless communication channel coupled to the processor to communicate antenna information relating to the use of the phased array antenna and to communicate information to facilitate playing the content at another location.
摘要翻译： 本文公开了一种用于与自适应波束形成的无线通信的方法和装置。 在一个实施例中，该设备包括处理器，射频（RF）发射机，其具有数字控制的相控阵列天线，其耦合到处理器并由控制器使用自适应波束成形来发送内容，以及到耦合到处理器的无线通信信道的接口 传送与使用相控阵天线有关的天线信息，并传送信息以便于在另一位置播放内容。
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公开(公告)号：US4835543A
公开(公告)日：1989-05-30
申请号：US801533
申请日：1985-11-27
申请人： Hermann B. Sequeira
发明人： Hermann B. Sequeira
IPC分类号： G02B6/12 , H01P1/10 , H01P1/32 , H01P1/36 , H01P1/38 , H01P3/02 , H01P3/08 , H01P3/16 , H01P5/08 , H01Q13/20 , H01Q13/24 , H01Q13/28 , H03C7/00
摘要： A transmission line comprising a multi-layer dielectric slab structure including: a dielectric substrate layer (30) having a thickness d.sub.s and permittivity .epsilon..sub.s ; a conductive ground plane (31) on the bottom surface of the dielectric substrate layer (30); a dielectric guiding layer (32) having a thickness h and permittivity .epsilon..sub.g, where .epsilon..sub.g >.epsilon..sub.s, attached to the top surface of dielectric substrate layer (30); at least one elongated and relatively narrow dielectric loading strip layer (33) having a width W, thickness d.sub.1, and permittivity .epsilon..sub.1, where .epsilon..sub.g >.epsilon..sub.1, attached to the top surface of the dielectric guiding layer (32); and a conductive coating (34) on the top surface of the dielectric loading strip layer (32). Such a structure permits single mode propagation over a relatively wide frequency band. Radiation losses due to coupling of the desired mode to the substrate modes and the conductors are furthermore reduced and the polarization of the dominant mode is such as to render said structure relatively insensitive to small deviations from parallelism among the different interfaces. This invention is directed to antenna structures formed from this type of multi-layer dielectric slab structure.
摘要翻译： 一种包括多层电介质板结构的传输线，包括：具有厚度ds和介电常数ε的电介质基底层（30）; 介电基片层（30）的底表面上的导电接地层（31）; 电介质引导层（32），其具有附着到电介质基底层（30）的顶表面的厚度h和介电常数εg，其中εg>ε; 具有宽度W，厚度d1和介电常数ε1的至少一个细长且相对较窄的电介质加载带层，其中ε1>ε1附着到电介质引导层（32）的顶表面; 以及在介电加载带层（32）的顶表面上的导电涂层（34）。 这种结构允许在相对宽的频带上进行单模传播。 进一步降低了由于期望的模式与衬底模式和导体的耦合而导致的辐射损耗，并且主要模式的极化使得所述结构对于不同接口之间的平行度的小偏差相对不敏感。 本发明涉及由这种类型的多层介质板结构形成的天线结构。
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公开(公告)号：US4275144A
公开(公告)日：1981-06-23
申请号：US114833
申请日：1980-01-24
申请人： Lawrence L. Buhl
发明人： Lawrence L. Buhl
CPC分类号： H03C7/00 , G02F1/035 , G03F7/0035
摘要： High speed, integrated optical directional coupler modulators utilize spaces of the order of one micron between waveguides. While one micron delineation of the waveguides can be readily obtained using conformable mask exposure techniques, diffraction effects become significant using thick glass masks required to delineate the electrodes. To overcome this problem, a two-process electrode fabrication procedure is employed. In accordance with the procedure a first pair of electrodes are deposited by a lithographic process. However, this yields a gap between electrodes that is wider than the desired gap. To reduce this distance, the process is repeated with the gap forming region of the mask laterally displaced. The result yields an electrode pattern with the desired spacing and thickness.
摘要翻译： 高速集成的光学定向耦合器调制器利用波导之间的一微米级的空间。 虽然可以使用适形的掩模曝光技术容易地获得波导的一微米描绘，但是使用描绘电极所需的厚玻璃掩模，衍射效应变得显着。 为了克服这个问题，采用了双过程电极的制造方法。 根据该程序，通过光刻工艺沉积第一对电极。 然而，这产生比期望的间隙宽的电极之间的间隙。 为了减小该距离，在掩模的间隙形成区域横向移位的情况下重复该过程。 结果产生具有所需间隔和厚度的电极图案。
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5.发明授权Reflection type phase modulator having reduced temperature sensitivity and reduced distortion 失效反射型相位调制器具有降低的温度灵敏度和减少的失真
公开(公告)号：US3961286A
公开(公告)日：1976-06-01
申请号：US557197
申请日：1975-03-10
申请人： Young Dae Kim
发明人： Young Dae Kim
摘要： An improved reflection type phase modulator having reduced temperature sensitivity and reduced distortion includes two three-port circulators coupled to form a four-port circulator. A first port is connected to a first phase modulator and a second port is coupled by means of a quarter wavelength transmission line to a second phase modulator, the transmission line being resonant at an applied unmodulated carrier frequency. The first and second phase modulators are coupled to receive a modulation signal. A third port of the circulator is coupled to receive the applied unmodulated carrier frequency and the fourth port provides a signal at the unmodulated carrier frequency which is phase modulated in response to the modulation signal.
摘要翻译： 具有降低的温度灵敏度和减小的失真的改进的反射型相位调制器包括耦合以形成四端口循环器的两个三端口循环器。 第一端口连接到第一相位调制器，并且第二端口通过四分之一波长传输线耦合到第二相位调制器，所述传输线在施加的未调制载波频率下谐振。 第一和第二相位调制器被耦合以接收调制信号。 耦合循环器的第三端口以接收施加的未调制载波频率，并且第四端口提供响应于调制信号相位调制的未调制载波频率的信号。
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6.发明授权
公开(公告)号：US3955106A
公开(公告)日：1976-05-04
申请号：US421298
申请日：1973-12-03
申请人： Johnny L. Berry
发明人： Johnny L. Berry
摘要： The specification discloses a semiconductor magnetic modulator for use with a moving target indicator radar transmitter and which utilizes a plurality of charging capacitors for receiving charging current from a direct current power source and discharging in parallel. Silicon controlled rectifiers are connected to each of the charging capacitors and are operable to triggering signals to cause said capacitors to discharge at a predetermined time. A de-Q-ing circuit is connected to each of the charging capacitors in order to sense the voltage level across the capacitors and to dissipate voltage above a predetermined threshold level. The charging capacitors discharge through a hold-off inductor and through a switching transformer to a pulse forming network including a second charging capacitor. Compression occurs in the pulse charging network and a resulting high power modulator pulse is applied from the network to a klystron power tube in a moving target indicator radar transmitter. The power supply for the modulator utilizes an SCR bridge A.C. to D.C. convertor. An automatic delay circuit is also provided in order to provide a stable radar modulator trigger signal to the modulator circuit.
摘要翻译： 本说明书公开了一种与移动目标指示器雷达发射机一起使用的半导体磁调制器，其利用多个充电电容器来接收来自直流电源的充电电流并且并联放电。 可控硅整流器连接到每个充电电容器，并且可操作以触发信号以使所述电容器在预定时间内放电。 一个去Q电路连接到每个充电电容器，以便感测电容器两端的电压电平并消耗高于预定阈值电平的电压。 充电电容器通过保持电感器并通过开关变压器放电到包括第二充电电容器的脉冲形成网络。 压缩发生在脉冲充电网络中，并且所产生的高功率调制器脉冲从网络施加到移动目标指示器雷达发射机中的速调管功率管。 调制器的电源使用SCR桥式交流直流转换器。 还提供自动延迟电路以便向调制器电路提供稳定的雷达调制器触发信号。
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公开(公告)号：US3651426A
公开(公告)日：1972-03-21
申请号：US3651426D
申请日：1970-06-24
发明人： BOATNER LYNN A , SEWELL KENNETH G
CPC分类号： H03C7/00 , H01L47/023 , H03B9/12 , H03C3/36 , H03M1/60
摘要： Disclosed is a Gunn-effect device comprising, for example, a crystal of n-type gallium arsenide having alloyed contacts (e.g., indium and gold) which is switched from one frequency of oscillation to another by controlling the incident light while maintaining an appropriate temperature and bias voltage. It is believed that trap zones which are localized within the crystal by virtue of introducing acceptor impurities account for a frequency of oscillation different from the usual transit-time frequency. The Gunn domains and the incident light are made to dynamically perturb the trap system so as to achieve a nonequilibrium condition.
摘要翻译： 公开了一种耿氏效应器件，其包括例如具有合金触点（例如，铟和金）的n型砷化镓的晶体，其通过控制入射光而从一个振荡频率切换到另一个频率，同时保持适当的温度 和偏置电压。 据信通过引入受体杂质而定位在晶体内的陷阱区域占据了与通常时间频率不同的振荡频率。 使得Gunn域和入射光动态扰动陷阱系统，以达到非平衡条件。
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公开(公告)号：US11156550B2
公开(公告)日：2021-10-26
申请号：US16642668
申请日：2018-08-03
申请人： ROHM CO., LTD.
发明人： Jaeyoung Kim , Toshikazu Mukai
IPC分类号： G01N21/3581 , G01R31/28 , H03B7/06 , H01Q23/00 , H03C7/00 , H01Q1/22 , H01S1/02 , H01L31/08 , H03B7/08 , H03B7/00 , H01Q9/24 , H03C7/02
摘要： One aspect of the present disclosure provides a terahertz-wave detector including a semiconductor substrate, an active element formed on the semiconductor substrate and a first resistive portion electrically connected in parallel with the active element.
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公开(公告)号：US10941652B2
公开(公告)日：2021-03-09
申请号：US16312314
申请日：2016-09-16
发明人： Ramachandhran Balasubramanian , Neal Gregory Skinner , John Laureto Maida , Wolfgang Hartmut Nitsche , Satyan Gopal Bhongale
摘要： Systems and methods for terahertz modulation in a terahertz frequency band from about 0.1 terahertz to about 10 terahertz propagating in a wellbore intersecting a subterranean earth formation. A transmitter generates the EM radiation in the terahertz frequency band. A modulator located in the wellbore receives the EM radiation and generates an amplitude modulated signal with the EM radiation.
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公开(公告)号：US10819282B2
公开(公告)日：2020-10-27
申请号：US16614732
申请日：2018-05-23
申请人： Soitec
摘要： A method for minimizing harmonic distortion and/or intermodulation distortion of a radiofrequency signal propagating in a radiofrequency circuit formed on a semiconductor substrate coated with an electrically insulating layer, wherein a curve representing the distortion as a function of a power of the input or output signal exhibits a trough around a given power (PDip), the method comprises applying, between the radiofrequency circuit and the semiconductor substrate, an electrical potential difference (VGB) chosen so as to move the trough toward a given operating power of the radiofrequency circuit.
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