Patent ID: 8831071

Claim:
A communication device, comprising: a first circuit portion comprising one or more components and configured during a regular mode to wirelessly receive and process communications signals at or near a first frequency; a second circuit portion comprising one or more components configured, during the regular mode, to wirelessly receive and process communication signals at or near a second frequency greater than the first frequency; wherein during a test mode, the first circuit portion is further configured to generate and wirelessly output a test signal comprising one or more harmonics at or around integer multiples of the first frequency with at least one harmonic of the test signal at or near the second frequency, wherein at least one circuit component of the first circuit portion used to receive or process communication signals at or near the first frequency during the regular mode has an inherent non-linearity that produces the one or more harmonics of the test signal during the test mode, and wherein during the test mode, the second circuit portion is further configured to wirelessly receive and thereafter process for test purposes the at least one harmonic of the test signal at or near the second frequency.