Comb-generator characterization
Date
2008
Authors
Reader H.C.
Williams D.F.
Hale T.D.
Clement T.S.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
We characterize a 50-GHz comb generator with a sampling oscilloscope. With careful control of the input power, input harmonics, and comb generator temperature, we measure the output spectrum with a standard uncertainty of 0.1 dB and 0.5°. We correct the measurements for time-base distortion, impedance mismatch, an inline attenuator, and the complex frequency response of the oscilloscope's sampler. We also report on the stability of the comb-generator spectrum and the effects of the recorded time windows, drive levels, and temperature. These results provide general guidelines for practioners of high-speed measurements and a benchmark for future inter-laboratory comparisons of harmonic phase-reference calibrations. © 2008 IEEE.
Description
Keywords
Cathode ray oscilloscopes, Electric impedance, Natural frequencies, Spectrum analysis, Comb generator stability, Mismatch correction, Electric generators
Citation
IEEE Transactions on Microwave Theory and Techniques
56
2
56
2