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公开(公告)号：US09939479B2
公开(公告)日：2018-04-10
申请号：US14260976
申请日：2014-04-24
Applicant: Keysight Technologies, Inc.
Inventor： David J. Ballo , James B. Kerr , Robert E. Shoulders
Abstract: A method of determining a noise figure (NF) response of a device under test (DUT) comprises determining a frequency response of a noise receiver over a first frequency range, measuring a gain of the DUT over a second frequency range encompassing the first frequency range, measuring output-noise power of the DUT over the second frequency range, determining an estimated gain of the DUT based on the frequency response of the noise receiver and the gain of the DUT over the first frequency range, and determining the NF response of the DUT over the second frequency range based on the estimated gain and the output-noise power.
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公开(公告)号：US20150309101A1
公开(公告)日：2015-10-29
申请号：US14260976
申请日：2014-04-24
Applicant: Keysight Technologies, Inc.
Inventor： David J. Ballo , James B. Kerr , Robert E. Shoulders
IPC: G01R29/26 , G01R31/317 , G01R23/20
Abstract: A method of determining a noise figure (NF) response of a device under test (DUT) comprises determining a frequency response of a noise receiver over a first frequency range, measuring a gain of the DUT over a second frequency range encompassing the first frequency range, measuring output-noise power of the DUT over the second frequency range, determining an estimated gain of the DUT based on the frequency response of the noise receiver and the gain of the DUT over the first frequency range, and determining the NF response of the DUT over the second frequency range based on the estimated gain and the output-noise power.
Abstract translation: 确定被测设备（DUT）的噪声系数（NF）响应的方法包括：在第一频率范围内确定噪声接收机的频率响应，在包括第一频率范围的第二频率范围内测量DUT的增益 测量所述DUT在所述第二频率范围上的输出噪声功率，基于所述噪声接收机的频率响应和所述DUT在所述第一频率范围内的增益来确定所述DUT的估计增益，以及确定所述DUT的NF响应 基于估计的增益和输出噪声功率在第二频率范围内的DUT。
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