Patent ID: 9214718
Filing Date: 2015-12-15
Classification: G01R,H01Q,H04B

Abstract:
1. A radio-frequency test system for testing an adjustable antenna tuning element, comprising: a first signal generator that is configured to provide first radio-frequency signals at only a first frequency to the adjustable antenna tuning element; a second signal generator configured to provide second radio-frequency signals at only a second frequency that is different than the first frequency to the adjustable antenna tuning element; and a first load pull tuner coupled to the adjustable antenna tuning element; a tester that is coupled to the adjustable antenna tuning element via a broadband radio-frequency coupler, wherein the tester is configured to obtain radio-frequency signal measurements while the first and second signal generators are providing the first and second radio-frequency signals to the adjustable antenna tuning element, and wherein the radio-frequency signal measurements obtained using the tester include intermodulation distortion measurements associated with the first radio-frequency signals at the first frequency and the second radio-frequency signals at the second frequency; and a notch filter interposed between the tester and the broadband radio-frequency coupler, wherein the notch filter is configured to attenuate radio-frequency signals at the first frequency.