Nordic Semiconductor ASA
ANALYZING THE FREQUENCY STABILITY OF RADIO TRANSCEIVER APPARATUS

Abstract:

A method for analyzing a frequency stability of a radio transceiver device comprises receiving a first succession of unmodulated radio-frequency signals of different frequencies from a radio transceiver apparatus. For each unmodulated radio-frequency signal, a respective time series of phase-offset values is determined, each phase-offset value being representative of a difference between a phase of the respective received unmodulated radio-frequency signal and a phase of a respective reference signal. The time series of phase-offset values is processed to determine a respective signal-phase-offset value for each unmodulated radio-frequency signal. A frequency-stability value, representative of a frequency stability of the radio transceiver apparatus, is calculated as a function representative of statistical variation in the signal-phase-offset values determined for the first succession of unmodulated radio-frequency signals.