TA430 datasheet(30/42 Pages) PICO

30 / 42 page

PicoVNA® 100 Series vector network analyzers

AM to PM conversion utility

AM to PM conversion is a form of signal distortion where changes in the amplitude of a

signal produce corresponding changes in the phase of the signal. This type of distortion

can have serious impact in digital modulation schemes for which amplitude varies and

phase accuracy is important.

P1dB utility

The 1 dB gain compression point of amplifiers and other active devices can be

measured using a power sweep, either at a test frequency or over a sweep of test

frequencies. The VNA determines the small-signal gain of the amplifier at low input

power, and then increases the power and notes the point at which the gain has fallen

by 1 dB. This utility uses a second-order curve fit to determine interpolated 1 dB

compression points.

Phase meter utility (PicoVNA 108 only)

The phase meter adds a valuable phase and amplitude alignment and stability

measurement capability to the PicoVNA 108. The two ports become auto-lock receivers

at any user-specified frequency within the 300 kHz to 8.5 GHz tuning range of the VNA.

The receivers will lock to externally applied signals within approximately ±70 kHz of the

set frequency and begin to measure and cross-refer phase and amplitude of the two

signals as numerical readouts.

Calibration and normalization facilities are provided, allowing, for example, precise

alignment of a quadrature-phase relationship or determination of differential phase and

amplitude balance or stability.

The IF bandwidth setting determines displayed result resolution, update rate and also

measurement noise at any given signal level. At IFB of 10 Hz, resolution is 0.001°

and 0.001 dB and update rate around 4 readings per second. Amplitude and phase

accuracies match those of standard VNA transmission measurements.

TA430 датащи(PDF) 30 Page - Pico Technology Ltd.