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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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公开(公告)号:US20160156277A1
公开(公告)日:2016-06-02
申请号:US14868215
申请日:2015-09-28
申请人: W.J. "Jim" Weaver, JR. , Michael H. Freeman , Michael C. Freeman , Robert Dieter , Brian Santee
发明人: W.J. "Jim" Weaver, JR. , Michael H. Freeman , Michael C. Freeman , Robert Dieter , Brian Santee
IPC分类号: H02M5/458
CPC分类号: H02M5/458 , H02J7/0052 , H02J2007/0062 , H02M1/08 , H02M1/36 , H02M3/33507 , H02M7/155 , H02M7/217 , H02M7/2176 , H02M7/48 , H02M2001/0009 , H02M2001/0019 , H05B33/0809 , Y10T307/406
摘要: An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and is adapted to receive a control signal and to produce an alternating current power signal. The frequency of the alternating current power signal is responsive to the control signal. The frequency dependent reactive device is electrically coupled to the pair of transistors for receiving the alternating current power signal and producing an output power signal. The frequency dependent reactive device is chosen to achieve a desired voltage of the output power signal relative to the frequency of the alternating current power signal. The control element senses an actual voltage of the direct current power signal and modifies the control signal delivered to achieve the desired voltage of the direct current power signal.
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