HotVNA-S -- NA-SpecialX

HHF is leading in vector hot S-parameter measurements including the test-set design around 2.45 GHz. Our meanwhile established product HotVNA-S allows to perform calibrated complex S-parameter measurements with our VNA-modules. However, every hot-S-parameter configuration is costumer specified.

Often, you need to test your high power components under high power conditions! The drift of the phase is often a very identification of process control, management or detection for instabilities.

HotVNA-S is optimized to test microwave ovens as well as passive components like GHz-plasma, wave guides, cables, connectors, filters, antennas and more. Manufactures of these components can used HotVNA-S to perform accurate tests with typ. 6000W and much more.

A typical configuration of a HotVNA-S-instrument for 6000 W and 2.45 GHz is shown in Fig. 1.

Fig. 1: Full 6kW generator with the HHF HotVNA S measurement hardware (here with 250 W for small signal measurement) for 2.4-2.5 GHz (NA-Special1-version)

This VNA-hot-S-parameter measurement system consists out of a high power magnetron and other high power parts from the company Fricke und Mallah (:fm) and the 250W PA as well as the VNA-modules from HHF.

One full architecture of this HotVNA-S for one-port measurements is given in Fig. 2.

Fig. 2: Block diagram of the test set for reflection measurements with included 250W-VNA

HHF sells this costumer defined measurement places with an open python-software. The included necessary calibration standards are shown in Fig. 3.

Fig. 3: Calibration standards for the wave guide and hot-S11 measurements error-corrected with included VNA

It is well known, that the calibration quality can be tested by the ripple test. Fig. 4 shows the very good results from the open python software.

Fig. 4: Screen shot of the error-corrected hot-S11 measurement results from the python program for the ripple test using 0.7m offset-short

Hot-S-parameter measurements are necessary to characterize in the R+D-world the DUT in real conditions or to perform in the production world a perfect process control. Fig. 5 shows the very good results from the open python software including the measurement errors of the 6kW signal at the both sidebands of the receiver.

Fig. 4: Results of the error-corrected hot-S11 DUT results in the ISM band of a GHz plasma (DUT)

More information (operating manual, price, etc.) are available from