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公开(公告)号：US09490519B2
公开(公告)日：2016-11-08
申请号：US14662982
申请日：2015-03-19
申请人： James D Lilly , Minor C Wilson
发明人： James D Lilly , Minor C Wilson
摘要： The present invention is drawn a transmission line transformer that uses specifically displaced beads of impedance increasing material on the coaxial transmission lines. The beads of impedance increasing material greatly reduce induced back currents on the outer surfaces of the coaxial transmission lines, which reduces losses and improves performance. The specific displacement of the beads enables the coaxial transmission lines to be compactly disposed within a heat sink.
摘要翻译： 本发明描述了一种传输线变压器，其在同轴传输线上使用特别移位的阻抗增加材料的珠。 阻抗增加材料的珠粒大大减少了同轴传输线外表面的感应回流，从而降低损耗并提高性能。 珠的特定位移使得同轴传输线能够紧凑地设置在散热器内。
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公开(公告)号：US20160276728A1
公开(公告)日：2016-09-22
申请号：US14662982
申请日：2015-03-19
申请人： James D. Lilly , Minor C. Wilson
发明人： James D. Lilly , Minor C. Wilson
摘要： The present invention is drawn a transmission line transformer that uses specifically displaced beads of impedance increasing material on the coaxial transmission lines. The beads of impedance increasing material greatly reduce induced back currents on the outer surfaces of the coaxial transmission lines, which reduces losses and improves performance. The specific displacement of the beads enables the coaxial transmission lines to be compactly disposed within a heat sink.
摘要翻译： 本发明描述了一种传输线变压器，其在同轴传输线上使用特别移位的阻抗增加材料的珠。 阻抗增加材料的珠粒大大减少了同轴传输线外表面的感应回流，从而降低损耗并提高性能。 珠的特定位移使得同轴传输线能够紧凑地设置在散热器内。
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公开(公告)号：US06646605B2
公开(公告)日：2003-11-11
申请号：US09976441
申请日：2001-10-12
IPC分类号： H01Q136
CPC分类号： H01Q9/0442 , H01Q1/38 , H01Q3/44 , H01Q9/0407 , H01Q15/002
摘要： A tunable artificial dielectric material achieves the weight reductions made possible in U.S. Pat. No. 6,075,485 and further achieves even higher resonant frequency tuning ratios. In one embodiment of the invention, the artificial dielectric substrate for a patch antenna comprises alternating low and high permittivity layers, with the high permittivity layers each comprised of printed capacitive Frequency Selective Surface (FSS). An example FSS of the invention has a voltage tunable effective sheet capacitance by virtue of varactor diodes integrated into each unit cell. By appropriate adjustment of the bias voltage across the varactor diodes, the amount of the electric field stored in the substrate can be varied, which further varies the resonant frequency of the patch antenna.
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公开(公告)号：US06590531B2
公开(公告)日：2003-07-08
申请号：US09863975
申请日：2001-05-23
IPC分类号： H01Q322
CPC分类号： H01Q3/2682
摘要： An antenna beamformer is disclosed that uses controllable time delay elements distributed in a planar fractal feed network between the input port and multiple output ports. The use of time delay elements, rather than phase shifting elements, allows the beamformer to maintain a constant steering angle independent of frequencies over a broad range of frequencies. In addition, fewer control signals are used to control all of the time delay elements due to distributing the time delay elements throughout the fractal feed network, rather than grouping the delay elements near the output ports.
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公开(公告)号：US06501427B1
公开(公告)日：2002-12-31
申请号：US09919776
申请日：2001-07-31
IPC分类号： H01Q138
CPC分类号： H01Q9/0435 , H01Q1/38 , H01Q9/0407 , H01Q9/0421 , H01Q9/0442 , H01Q9/065 , H01Q19/005 , H01Q21/245
摘要： A patch antenna is composed of a segmented patch and MEMS switches which are built on a substrate. The patch segments of the segmented patch can be electrically connected to each other by the MEMS switches to form a contiguous patch and optional tuning strips and to connect or block RF between the contiguous patch and the optional tuning strips. When RF is connected between the tuning strips and the contiguous patch, the tuning strips increase the effective length of the contiguous patch and lower the antenna's resonant frequency, thereby allowing the antenna to be frequency tuned electrically over a relatively broadband of frequencies. When the tuning strips are connected to the patch in other than a symmetrical pattern, the antenna pattern of the antenna can be changed. In another aspect of the invention, the optional tuning strips are continuous structures that are formed by connecting patch segments using switches. A planar inverted F antenna (PIFA) is also provided with one or more tuning strips spaced from the lid of the PIFA and with switches to connect or block RF between the lid of the PIFA and the tuning strips.
摘要翻译： 贴片天线由分段贴片和建立在基底上的MEMS开关组成。 分段贴片的贴片段可以通过MEMS开关彼此电连接，以形成连续的贴片和可选的调整条，并连接或阻止相邻贴片和可选调谐条之间的RF。 当RF连接在调谐带和连续的贴片之间时，调谐带增加了连续贴片的有效长度并降低了天线的谐振频率，从而允许天线在频率相对较宽的频率上进行电调谐。 当调谐带与对称图案不同的贴片连接时，可改变天线的天线方向图。 在本发明的另一方面，可选调谐带是通过使用开关连接补片段形成的连续结构。 平面倒F天线（PIFA）还具有与PIFA的盖子间隔开的一个或多个调谐带，以及用于连接或阻挡PIFA的盖子和调谐带之间的RF的开关。
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公开(公告)号：US06411261B1
公开(公告)日：2002-06-25
申请号：US09845011
申请日：2001-04-27
申请人： James D. Lilly
发明人： James D. Lilly
IPC分类号： H01Q1500
CPC分类号： H01Q15/008
摘要： The invention provides an artificial magnetic conductor (AMC) system and method for manufacturing. The AMC has a post plane with posts and slots. The posts are operatively disposed adjacent to conductive shapes on one or more frequency selective surfaces. The posts formably extend from the post plane.
摘要翻译： 本发明提供一种人造磁导体（AMC）系统及其制造方法。 AMC有一个岗位和插槽。 柱在一个或多个频率选择表面上可操作地设置成与导电形状相邻。 这些柱子可以从后置平面延伸出来。
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公开(公告)号：US6061025A
公开(公告)日：2000-05-09
申请号：US968216
申请日：1997-11-12
CPC分类号： H01Q1/38 , H01Q19/005 , H01Q9/0421 , H01Q9/0442 , H01Q9/045 , H01Q9/0478
摘要： A patch antenna is provided with one or more tuning strips spaced therefrom and RF switches to connect or block RF currents therebetween. When a control system for the antenna selectively connects and isolates RF currents between certain of the tuning strips and the patch, the tuning strips change the effective length of the patch and thus the antenna's resonant frequency, thereby frequency tuning the antenna electrically over a relatively broad band of frequencies. The control system includes circuitry for rapidly switching the antenna to a desired frequency with minimal delay and with superior isolation from the antenna, making it suitable for use in DAMA, TDMA, and other frequency hopping applications.
摘要翻译： 贴片天线设置有与其间隔开的一个或多个调谐带，并且RF开关用于在其间连接或阻断RF电流。 当用于天线的控制系统选择性地连接并隔离某些调谐带和贴片之间的RF电流时，调谐带改变贴片的有效长度，从而改变天线的谐振频率，从而在相对较宽的频率上调谐天线 频带。 该控制系统包括用于以最小的延迟将天线快速切换到期望的频率并且与天线隔离的优越的电路，使其适用于DAMA，TDMA和其他跳频应用。
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8.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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9.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：US5943016A
公开(公告)日：1999-08-24
申请号：US844929
申请日：1997-04-22
CPC分类号： H01Q1/38 , H01Q19/005 , H01Q9/0421 , H01Q9/0442 , H01Q9/045 , H01Q9/0478
摘要： A patch antenna is provided with one or more tuning strips spaced therefrom and RF switches to connect or block RF currents therebetween. When a conducting path for RF current is connected between the tuning strips and the patch, the tuning strips increase the effective length of the patch and lower the antenna's resonant frequency, thereby allowing the antenna to be frequency tuned electrically over a relatively broadband of frequencies. If the tuning strips are connected to the patch in other than a symmetrical pattern, the antenna pattern of the antenna can be changed. A feed network couples RF to the antenna and includes two hybrid couplers, one for providing the correct amplitude and phase of excitation at the feed probes, and the second for effectively dissipating reflected power due to antenna impedance mismatch.
摘要翻译： 贴片天线设置有与其间隔开的一个或多个调谐带，并且RF开关用于在其间连接或阻断RF电流。 当调谐带和贴片之间连接用于RF电流的导电路径时，调谐带增加贴片的有效长度并降低天线的谐振频率，从而允许天线在频率相对较宽的频率上进行电调谐。 如果调谐带与对称图案不同的贴片连接，则可改变天线的天线方向图。 馈电网络将RF耦合到天线，并且包括两个混合耦合器，一个用于在馈电探针处提供正确的激励振幅和相位，而第二耦合器用于由于天线阻抗失配而有效地耗散反射功率。
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