Title :
Multiharmonic generators for relative phase calibration of nonlinear network analyzers
Author :
Heymann, Peter ; Deorner, R. ; Rudolph, Matthias
Author_Institution :
Ferdinand-Braun-Inst. fur Hochstfrequenztech., Berlin, Germany
fDate :
2/1/2001 12:00:00 AM
Abstract :
Multiharmonic generators are of interest for determining coupler phase dispersion of nonlinear network analyzers inherently dealing with nonsinusoidal waveforms for RF current-voltage (I-V) measurements. Supported by simple waveform analysis, two on-wafer devices are experimentally evaluated: a single diode and a nonlinear transmission line (NLTL). The investigation uses an active harmonic load-pull system with 2 GHz fundamental frequency. It turns out that the NLTL is well suited as a reference generator. We present measurement examples of phase dispersion for different directional couplers up to 18 GHz and the application to RF I-V waveforms of a 1-W power HBT with harmonic load tuning
Keywords :
calibration; directional couplers; electric current measurement; harmonic generation; high-frequency transmission lines; microwave measurement; microwave power transistors; network analysers; phase measurement; semiconductor device measurement; voltage measurement; waveform analysis; 1 W; 2 GHz; 3 to 40 GHz; RF I-V waveforms; RF current-voltage measurements; active harmonic load-pull system; coupler phase dispersion; directional couplers; fundamental frequency; harmonic load tuning; multiharmonic generators; nonlinear network analyzers; nonlinear transmission line; nonsinusoidal waveforms; on-wafer devices; phase dispersion; power HBT; reference generator; relative phase calibration; single diode; waveform analysis; Calibration; Couplings; Current measurement; Diodes; Dispersion; Phase measurement; Power measurement; Power transmission lines; Radio frequency; Transmission line measurements;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
