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61.发明授权公开(公告)号：US06768476B2
公开(公告)日：2004-07-27
申请号：US10310714
申请日：2002-12-05
IPC分类号： H01Q1502
摘要： An antenna consisting of a thin strip bent-wire monopole disposed on an artificial magnetic conductor (AMC) is loaded at the end opposite to the feed point with a distributed or lumped capacitance to achieve an electrically small antenna for use in handheld wireless devices. The capacitive load reduces the length of the antenna to smaller than one-quarter of a wavelength at a given frequency of operation without suffering a substantial loss of efficiency. This results in an easier integration into portable devices, greater radiation efficiency than other loaded antenna approaches and longer battery life in portable devices, and lower cost than use of a chip inductor.
摘要翻译： 由设置在人造磁导体（AMC）上的薄带弯曲线单极子组成的天线在与馈电点相对的端部以分布或集中电容加载，以实现用于手持无线装置的电小天线。 容性负载在给定的操作频率下将天线的长度减小到小于波长的四分之一，而不会显着损失效率。 这使得便携式设备更容易集成，比其他加载的天线方法更大的辐射效率和便携式设备中更长的电池寿命，并且比使用片式电感器的成本更低。
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公开(公告)号：US06525695B2
公开(公告)日：2003-02-25
申请号：US09845393
申请日：2001-04-30
IPC分类号： H01Q1310
CPC分类号： H01Q15/0066 , H01Q3/46 , H01Q15/008
摘要： A frequency reconfigurable artificial magnetic conductor (AMC) includes a ground plane, a spacer layer disposed adjacent the ground plane and a plurality of vias in electrical contact with the ground plane and extending from a surface of the ground plane in direction of the spacer layer. The AMC further includes a frequency selective surface (FSS) disposed on the spacer layer and including a periodic pattern of bias node patches alternating with ground node patches, the ground node patches being in electrical contact with respective vias of the plurality of vias, and components between selected bias node patches and ground node patches, the components having a capacitance which is variable in response to a bias voltage. A network of bias resistors between adjacent bias node patches provides the tuning voltage.
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公开(公告)号：US06512494B1
公开(公告)日：2003-01-28
申请号：US09678128
申请日：2000-10-04
IPC分类号： H01Q1502
CPC分类号： H01Q9/0442 , H01Q7/00 , H01Q15/008
摘要： An artificial magnetic conductor is resonant at multiple resonance frequencies. The artificial magnetic conductor is characterized by an effective media model which includes a first layer and a second layer. Each layer has a layer tensor permittivity and a layer tensor permeability having non-zero elements on the main tensor diagonal only.
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64.发明授权Reduced weight artificial dielectric antennas and method for providing the same 失效减少人造介质天线的重量和提供它的方法
公开(公告)号：US6075485A
公开(公告)日：2000-06-13
申请号：US185205
申请日：1998-11-03
CPC分类号： H01Q9/0407 , H01Q1/38 , H01Q9/0442
摘要： An artificial anisotropic dielectric material is used as a microstrip patch antenna substrate and can achieve dramatic antenna weight reduction. The artificial dielectric is comprised of a periodic structure of low and high permittivity layers. The net effective dielectric constant in the plane parallel to the layers is engineered to be any desired value between the permittivities of the constituent layers. These layers are oriented vertically below the patch to support electric fields consistent with desired resonant modes. Substrates may be engineered for both linearly and circularly polarized patch antennas. Substrate weights can be reduced by factors of from 6 to 30 times using different types of high permittivity layers. This concept has numerous applications in electrically small and lightweight antenna elements, as well as in resonators, microwave lenses, and other electromagnetic devices.
摘要翻译： 使用人造各向异性介电材料作为微带贴片天线基板，并且可以实现显着的天线重量减轻。 人造电介质由低介电常数层和高介电常数层构成。 平行于层的平面中的净有效介电常数被设计为构成层的介电常数之间的任何期望值。 这些层垂直地定向在贴片下方以支持与期望的谐振模式一致的电场。 衬底可以被设计用于线性和圆偏振贴片天线。 使用不同类型的高介电常数层，可以将基板重量降低6至30倍。 该概念在电力小且重量轻的天线元件以及谐振器，微波透镜和其它电磁装置中具有许多应用。
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公开(公告)号：US4573025A
公开(公告)日：1986-02-25
申请号：US595841
申请日：1984-04-02
CPC分类号： H03B25/00
摘要： An oscillator having the ability to oscillate at a plurality of discrete frequencies in response to an applied digital signal is disclosed. A crystal-controlled, resonant circuit utilizing passive components as frequency determining elements and a PIN diode switching scheme allows the oscillator to demonstrate a tendency for each of the plurality of discrete frequencies to drift equally in response to temperature changes. A two-transistor, emitter coupled amplifying section uses a current mirror for biasing and provides an impedance matching network.
摘要翻译： 公开了具有响应于所应用的数字信号以多个离散频率振荡的能力的振荡器。 利用无源元件作为频率确定元件和PIN二极管切换方案的晶体控制的谐振电路允许振荡器响应于温度变化而显示出多个离散频率中的每一个均匀漂移的倾向。 双晶体管，发射极耦合放大部分使用电流镜来偏置并提供阻抗匹配网络。
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公开(公告)号：US09024706B2
公开(公告)日：2015-05-05
申请号：US13313409
申请日：2011-12-07
CPC分类号： H01P3/003 , H01P1/2005 , H01Q15/10 , H01Q25/008 , H05K1/0236 , Y10T29/49016
摘要： Electromagnetic slow wave structures (SWS) comprised of arrays of conductive obstacles are formed inside conductive parallel-plate waveguides These SWS may be formed using, for example, MEMS manufacturing processes at the wafer level on substrates including ceramic and silicon. An effective relative permittivity in the range of 15 to 40 may be obtained at millimeterwave frequencies. The SWS can be made absorptive by incorporating resistive losses in a plate of the PPW. Applications of these slow wave structures include delay lines and bootlace lens beamformers for microwave and millimeterwave antenna systems.
摘要翻译： 在导电平行板波导内部形成由导电障碍物阵列组成的电磁慢波结构（SWS）。这些SWS可以使用例如在包括陶瓷和硅的衬底上的晶片级的MEMS制造工艺来形成。 可以在毫米波频率下获得15至40范围内的有效相对介电常数。 通过在PPW的板中并入电阻损耗可以使SWS吸收。 这些慢波结构的应用包括用于微波和毫米波天线系统的延迟线和引导透镜波束形成器。
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公开(公告)号：US08680934B2
公开(公告)日：2014-03-25
申请号：US12939110
申请日：2010-11-03
CPC分类号： H04B1/0458 , H01Q1/243 , H01Q1/50 , H03H7/40 , H03H2007/386
摘要： An embodiment of the present invention provides an apparatus, comprising an RF matching network connected to at least one RF input port and at least one RF output port and including one or more voltage or current controlled variable reactive elements; a voltage detector connected to the at least one RF output port via a variable voltage divider to determine the voltage at the at least one RF output port and provide voltage information to a controller that controls a bias driving circuit which provides voltage or current bias to the RF matching network; a variable voltage divider connected to the voltage detector and implemented using a multi-pole RF switch to select one of a plurality of different resistance ratios to improve the dynamic range of the apparatus; and wherein the RF matching network is adapted to maximize RF power transferred from the at least one RF input port to the at least one RF output port by varying the voltage or current to the voltage or current controlled variable reactive elements to maximize the RF voltage at the at least one RF output port.
摘要翻译： 本发明的一个实施例提供了一种装置，包括连接到至少一个RF输入端口和至少一个RF输出端口并且包括一个或多个电压或电流控制的可变无功元件的RF匹配网络; 电压检测器，经由可变分压器连接到所述至少一个RF输出端口，以确定所述至少一个RF输出端口处的电压，并向控制器提供电压信息，所述控制器控制向所述至少一个RF输出端口提供电压或电流偏置的偏置驱动电路 射频匹配网络; 连接到所述电压检测器的可变分压器并且使用多极RF开关来选择多个不同电阻比之一来改善所述装置的动态范围; 并且其中所述RF匹配网络适于通过将所述电压或电流控制的可变无功元件的电压或电流变化来最大化RF电压来最大化从所述至少一个RF输入端口传输到所述至少一个RF输出端口的RF功率 所述至少一个RF输出端口。
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公开(公告)号：US08620246B2
公开(公告)日：2013-12-31
申请号：US13293544
申请日：2011-11-10
CPC分类号： H03H7/40 , H03H7/38 , H04B1/0458
摘要： A system that incorporates teachings of the present disclosure can include, for example, determining at a port of a matching network reflection information from a signal sampled across at least one predetermined fixed-value reactance component, generating at least one control signal according to the reflection information, and tuning the matching network with the at least one control signal, where the matching network comprises one or more controllable variable reactive elements each with an independent control voltage. Additional embodiments are disclosed.
摘要翻译： 结合本公开的教导的系统可以包括例如在端口处确定来自在至少一个预定的固定值电抗分量上采样的信号的匹配网络反射信息，根据反射产生至少一个控制信号 信息，以及利用所述至少一个控制信号来调整所述匹配网络，其中所述匹配网络包括每个具有独立控制电压的一个或多个可控变量无功元件。 公开了另外的实施例。
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公开(公告)号：US08217732B2
公开(公告)日：2012-07-10
申请号：US12722164
申请日：2010-03-11
摘要： A system that incorporates teachings of the present disclosure may include, for example, an apparatus having one or more controllable variable reactive elements coupled to at least one input port and at least one output port, and a voltage detector coupled to the at least one output port to provide voltage information to a controller. The controller can be adapted to generate one or more control signals responsive to the voltage information provided by the voltage detector. The one or more controllable variable reactive elements can be coupled to a circuit adapted to map the one or more control signals that are output from the controller to a signal range that is compatible with said one or more controllable variable reactive elements. Additional embodiments are disclosed.
摘要翻译： 结合本公开的教导的系统可以包括例如具有耦合到至少一个输入端口和至少一个输出端口的一个或多个可控可变无功元件的装置，以及耦合到该至少一个输出端的电压检测器 端口以向控制器提供电压信息。 控制器可以适于响应于由电压检测器提供的电压信息而产生一个或多个控制信号。 一个或多个可控可变无功元件可以耦合到适于将从控制器输出的一个或多个控制信号映射到与所述一个或多个可控变量无功元件兼容的信号范围的电路。 公开了另外的实施例。
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公开(公告)号：US08217731B2
公开(公告)日：2012-07-10
申请号：US12722162
申请日：2010-03-11
摘要： A system that incorporates teachings of the present disclosure may include, for example, a matching network having one or more controllable variable reactive elements coupled to at least one input port and at least one output port. The one or more controllable variable reactive elements can be adapted to increase power transferred from the at least one input port to the at least one output port responsive to signals generated by a controller adapted to adjust one or more reactances within the matching network according to a mode of operation of a device detected by the controller. Additional embodiments are disclosed.
摘要翻译： 结合本公开的教导的系统可以包括例如具有耦合到至少一个输入端口和至少一个输出端口的一个或多个可控可变无功元件的匹配网络。 一个或多个可控可变无功元件可以适于增加从至少一个输入端口传送到至少一个输出端口的功率，响应于由控制器产生的信号，该控制器适于调整匹配网络内的一个或多个电抗，根据 由控制器检测的设备的操作模式。 公开了另外的实施例。
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