Quality factor estimation of a reverberant cavity

摘要

QUALITY FACTOR ESTIMATION OF A REVERBERANT CAVITY A method comprises collecting (110) a data set of field characterization measurements at a location inside a reverberant cavity excited by signals having multiple discrete electromagnetic frequencies; and performing (120) a number (n) of circular shifts on the data set by a frequency step (Af) and computing a covariance-based coefficient at each shift until the coefficient indicates a lack of correlation. The method further comprises computing (130) a quality factor (Q) of the reverberant cavity as fc/(Af x n), where fc is center frequency of the data set. Excite a cavity at multiple discrete electromagnetic frequencies, and measure "-110 and store a field characteristic at each discrete frequency Perform a number (n) of circular shifts on a data set of the measurements, and compute 120 a covariance-based coefficient at each shift until the coefficient indicates a lack of correlation Compute a quality factor (Q) of the cavity as 130 fc/(Af x n) Port 1 Port 2 NETWORK ANALYSIS MACHINE SIGNAL TEST SET 242 244 11240 RECEIVERS PROCESSOR