Computer-aided analysis of near-carrier noise in RF–microwave frequency converters

✍ Scribed by Vittorio Rizzoli; Alessandra Costanzo; Diego Masotti; Franco Mastri

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 808 KB
• Volume: 9
• Category: Article
• ISSN: 1096-4290
• DOI: 10.1002/(sici)1099-047x(199911)9:6<449::aid-mmce3>3.0.co;2-s

✦ Synopsis

The paper presents for the first time a rigorous nonlinear analysis of near-carrier noise in a frequency converter consisting of a noisy nonlinear circuit driven by noisy ( ) sinusoidal source s . The problem being tackled is the evaluation of the phase and amplitude noise of the up-or down-converted signal starting from the knowledge of the circuit topology, of noisy models for the nonlinear devices, and of the statistical properties ( ) of the noisy forcing source s . Two mixer models of different complexities are treated in ( ) depth, i.e., the case of an ideally buffered local oscillator LO , and the case of a real LO fully described by its circuit topology. In both cases a correct evaluation of the near-carrier noise is shown to require a perturbative analysis of the noiseless quasiperiodic steady state generated by the intermodulation of the local oscillation with the RF signal.