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公开(公告)号：US06917250B2
公开(公告)日：2005-07-12
申请号：US11005959
申请日：2004-12-07
CPC分类号： H01P1/387
摘要： A radio frequency (RF) circulator includes a low temperature co-fired ceramic (LTCC) substrate and a ferrite structure disposed in the LTCC substrate. The circulator also includes first, second and third transmission lines disposed in the LTCC substrate and coupled between the ferrite disk and first, second and third ports of the circulator. The ferrite structure embedded in the LTCC substrate is exposed to an appropriate direct current (DC) magnetic field, to provide the circulator as an integrated LTCC substrate circulator.
摘要翻译： 射频（RF）循环器包括低温共烧陶瓷（LTCC）衬底和设置在LTCC衬底中的铁氧体结构。 环行器还包括布置在LTCC衬底中的第一，第二和第三传输线，并且耦合在铁氧体磁盘与循环器的第一，第二和第三端口之间。 嵌入在LTCC衬底中的铁氧体结构暴露于适当的直流（DC）磁场，以提供循环器作为集成的LTCC衬底循环器。
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公开(公告)号：US06844789B2
公开(公告)日：2005-01-18
申请号：US10234672
申请日：2002-09-04
CPC分类号： H01P1/387
摘要： A radio frequency (RF) circulator includes a low temperature co-fired ceramic (LTCC) substrate and a ferrite structure disposed in the LTCC substrate. The circulator also includes first, second and third transmission lines disposed in the LTCC substrate and coupled between the ferrite disk and first, second and third ports of the circulator. The ferrite structure embedded in the LTCC substrate is exposed to an appropriate direct current (DC) magnetic field, to provide the circulator as an integrated LTCC substrate circulator.
摘要翻译： 射频（RF）循环器包括低温共烧陶瓷（LTCC）衬底和设置在LTCC衬底中的铁氧体结构。 环行器还包括布置在LTCC衬底中的第一，第二和第三传输线，并且耦合在铁氧体磁盘与循环器的第一，第二和第三端口之间。 嵌入在LTCC衬底中的铁氧体结构暴露于适当的直流（DC）磁场，以提供循环器作为集成的LTCC衬底循环器。
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公开(公告)号：US07667467B2
公开(公告)日：2010-02-23
申请号：US11596137
申请日：2005-08-05
申请人： Mahmood F. Khosravi , Robert B. Lombardi , Donald B. Spencer , Leonard Ruvinsky , Michael C. Freeman
发明人： Mahmood F. Khosravi , Robert B. Lombardi , Donald B. Spencer , Leonard Ruvinsky , Michael C. Freeman
CPC分类号： G01R27/28 , G01R29/105
摘要： An antenna and its associated components are consolidated in a small measurement box, and multiple tests are competed simultaneously, with a single vector network analyzer. This can be done by treating the “Far Field” measurements (typically measured on antenna/RCS ranges) as another port of a larger passive network. After characterization of one ideal “gold” unit (or a sample set of “gold” units), the S-parameters of subsequent units are measured in the same passive test box environment. The results of these subsequent tests are compared to the results of the “gold unit's” test, and if they are repeated to within some tolerance, electrical similarity can be proven.
摘要翻译： 将天线及其相关组件整合在一个小的测量盒中，并通过单个矢量网络分析仪同时进行多个测试。 这可以通过将“远场”测量（通常在天线/ RCS范围上测量）作为更大的被动网络的另一端口进行。 在一个理想的“金”单元（或“金”单元的样本集）的表征之后，随后单元的S参数在相同的被动测试箱环境中测量。 将这些后续测试的结果与“金单位”测试的结果进行比较，如果在某些公差范围内重复测试，则可以证明电气相似性。
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