This extension allows the technique to function on any set of binary data that has sufficient edges to provide information on the phase noise under evaluation.University of Washington.Ecker, Allan C.University of Washington.A. C. Ecker, "A digital method for phase noise measurement," Ph.D. ...
A phase noise measurement module (PNMM), system and method for measuring phase noise improve accuracy of phase noise measurements of a signal under test (SUT) using a spectrum analyzer. The PNMM includes an RF to hF frequency converter and a selectable frequency divider. The system includes ...
Using digital phase-noise measurement techniques and an even-harmonic mixer, we achieve a phase-noise measurement system in waveguide (WR1.5). At 670 GHz an upper bound of this system's noise floor is found to be −20, −40, and −60 dBc/Hz at 1, 100, and 10000 Hz offsets, ...
Two different laser phase noise measurement techniques are compared. One of these two techniques is based on a conventional and low-cost delay line system, which is usually set up for the linewidth measurement of semiconductor lasers. The results obtained with both techniques on a high-spectral-pu...
Aiming at the shortcomings of traditional broadcast transmitter noise test methods, such as low efficiency, inconvenient data storage, and high requirements for testers, a dynamic online test method for transmitter noise is proposed. The principle of system composition and test method is given. The ...
spectrum analyzer, such as SNA-7, can carry out direct SSB phase noise measurements to within a few Hz of the carrier frequency at radio frequencies.[2] In this case, there is no need to invest in expensive phase noise measurement equipment based on the zero-crossing method (phase detector...
10. The method of estimating phase noise spectral density in a periodic signal as recited in claim 8 wherein the interpolating step further comprises the step of generating a higher order interpolator using multiple digital data samples above and below the reference crossing. 11. The method of ...
Software-defined radios (SDRs) are radio frequency transceivers designed to facilitate digital signal processing through the use of vast libraries of open-source software. Here, we assemble a simple data acquisition system whose architecture, based on SD
The proposed method requires a means to transmit a synchronised beacon from the central node to receivers. In this section, we propose the use of time-averaged CSS as a computationally efficient means of providing accurate timestamping, TOF measurement. First, the CSS approach utilised by the Lo...
The proposed method is based on the predetermined frequency response of the pressure measurement system to the accelerations and simultaneous measurements of the vibration accelerations of the pressure sensor during its calibration in the shock tube. The acceleration-induced errors were corrected for a ...