Patent ID: 7248033
Filing Date: 2007-07-24
Classification: G01R

Abstract:
1. A method of obtaining network analysis parameters for a frequency translation device, the method comprising the steps of: driving a first port of the frequency translation device in a forward direction with an applied test signal having a first swept frequency; converting within the frequency translation device the applied test signal having the first swept frequency to a translated test signal having a second swept frequency different from the first swept frequency by the frequency of an auxiliary local oscillator; heterodyning a portion of the applied test signal having the first swept frequency with the signal from the auxiliary local oscillator to produce a substitute applied test signal having the second swept frequency; measuring the substitute applied test signal having the second swept frequency with a tracking receiver tuned to the second swept frequency to obtain the network analysis parameter a heterodyning a portion of a reflection from the first port of the applied test signal having the first swept frequency with the signal from the auxiliary local oscillator to produce a substitute reflected applied test signal having the second swept frequency; measuring the substitute reflected applied test signal having the second swept frequency with a tracking receiver tuned to the second swept frequency to obtain the network analysis parameter b measuring a portion of the translated test signal having the second swept frequency and appearing at a second port of the frequency translation device with a tracking receiver tuned to the second swept frequency to obtain the network analysis parameter b