CALIBRATION METHOD FOR APPARATUS EVALUATING MICROWAVE/MILLIMETER WAVE CIRCUITS

摘要

CALIBRATION METHOD FOR APPARATUS EVALUATINGMICROWAVE/MILLIMETER WAVE CIRCUITSAbstractA calibration procedure for vector network analyzersutilizing a known standard, an unknown standard and a pairof offsets bearing a known length ratio (2:1) between themwhereby measurements taken on the standards and theircombinations with the offsets result in self-verifyingredundant equations which furnish: (1) error termsaccording to well-known flow graph models, (2) thereflection of the unknown standard, (3) the transmissionfactor of the waveguiding medium from which the offsets arerealized regardless of the waveguide's loss or dispersion,and (4) a figure of merit (corruption coefficient) for thequality of the acquired raw data without the necessity forcomputing the error terms, connecting verificationstandards or otherwise completing the calibration process.