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Low-Cost Characterization and Calibration of RF Integrated Circuits through I Q Data Analysis

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2 Author(s)
Acar, E. ; Duke Univ., Durham, NC ; Ozev, S.

Due to the increasing complexity of radio-frequency circuits, their testing becomes more challenging. A large number of performance parameters under several operation conditions are needed in order to ensure compliance to specifications. In this paper, we present a low-cost test methodology that determines significant performance parameters, such as path gain IIP 3, quadrature imbalances, noise, bit error rate, and error vector magnitude through a single test setup. The proposed test methodology is applicable for both single-carrier and multicarrier systems. Simulation and measurement results indicate that these performance parameters can be calculated and estimated accurately through a single test setup and using a shorter test sequence than required by traditional techniques. In addition, a calibration technique is presented for single-carrier systems to recover marginally failing devices through analytically correcting performance parameters.

Published in:

Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:28 ,  Issue: 7 )