Jargon Jeffrey A, Ginley Ronald A, Sutton Douglas D
National Institute of Standards and Technology, Boulder, CO 80303-3328.
J Res Natl Inst Stand Technol. 1994 Jan-Feb;99(1):19-25. doi: 10.6028/jres.099.003.
An automated linear measurement system (LMS) has been developed to determine the nonlinearity of a tuned 30 MHz power detector over a 6.021 dB range. This detector uses a single thermistor bead design with thermal isolation to obtain nearly linear tracking over a 4:1 change in input power. The nonlinear correction for this change, determined by the LMS, is on the order of 1.00030 (+130 μB) for the detector presently in use. Initial experiments indicate an expanded uncertainty of ±0.138% (±598 μB), which is based upon Type A and Type B components.
已开发出一种自动线性测量系统（LMS），用于确定调谐到30 MHz的功率探测器在6.021 dB范围内的非线性。该探测器采用具有热隔离的单个热敏电阻珠设计，以在输入功率4:1的变化范围内实现近乎线性的跟踪。由LMS确定的针对此变化的非线性校正，对于目前使用的探测器而言约为1.00030（+130 μB）。初步实验表明，基于A类和B类分量，扩展不确定度为±0.138%（±598 μB）。
