New behavioral-level simulation technique for RF/microwave applications. Part I: Basic concepts

✍ Scribed by S. L. Loyka; J. R. Mosig

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 258 KB
• Volume: 10
• Category: Article
• ISSN: 1096-4290
• DOI: 10.1002/1099-047x(200007)10:4<221::aid-mmce4>3.0.co;2-r

✦ Synopsis

The quadrature modeling technique is nowadays widely used for the nonlinear ( simulation of RFr r r r rmicrowave communication circuits and systems at the behavioral sys-) tem level. It allows one to simulate the circuitr r r r rsystem performance under real-world ( ) conditions and signals using several thousand sample frequencies and to predict such parameters as adjacent channel power ratio, spectral regrowth, and error vector magnitude in a computationally efficient way. But it is a narrowband technique and, consequently, cannot predict harmonics of the carrier frequency and even-order nonlinear products, to account for the circuitr r r r rsystem frequency response and the bias decoupling network effect. ( Here, we propose a new behavioral-level simulation technique instantaneous quadrature ) technique that overcomes these drawbacks, and demonstrate its validity through measurements and harmonic balance simulation. The transformation of envelope transfer characteristics into instantaneous ones is also discussed in detail.