Patent ID: 9413404
Filing Date: 2016-08-09
CPC Classification: G01R,H03D,H04B

Claim Text:
1. A method for characterizing at a given frequency reflected waves of a frequency translating device having at least two ports, whereby information is available on the phase of a local oscillator signal driving said frequency translating device, the method comprising: applying at said at least two ports at least a tone at said given frequency and tones at said given frequency offset by the local oscillator signal frequency; rotating the phase of said applied tone at said given frequency or exploiting a phase rotation of said local oscillator signal; measuring at said given frequency amplitude and phase of reflected waves at said at least two ports and measuring at said given frequency and at said given frequency offset by the frequency of said local oscillator signal amplitude and phase of incident waves at said at least two ports; and determining parameters for a model of said frequency translating device by relating said amplitude and phase of said reflected waves to said incident waves, taking into account at least the local oscillator signal phase.