An LTV Analysis of the Frequency Translational Noise-Cancelling Receiver

作者：Murphy David^*; Mirzaei Ahmad; Darabi Hooman; Chang Mau Chung Frank; Abidi Asad

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2014, 61(1): 266-279.

DOI：10.1109/TCSI.2013.2268280

• Blocker-tolerant
• CMOS
• harmonic-rejection
• highly-linear
• low-noise
• noise-cancelling
• receiver
• software-defined-radio (SDR)
• wideband

The recently proposed Frequency-Translational Noise-Cancelling receiver demonstrates exceptional out-of-band linearity, a low noise factor, and wideband operation. Fundamental to the receiver's performance is the use of two passive-mixer-based downconversion paths, which delays noise-cancelling until after baseband filtering. As a result, voltage gain at blocker frequencies can be avoided, but the benefits of noise cancelling (i.e., wideband operation and low noise) can be retained. Although a simplified LTI analysis is sufficient to understanding the basic noise properties of the system, such an analysis cannot yield accurate closed-form expressions because it neglects the many signal and noise folding terms introduced by the two passive mixers. In this work, a complete LTV analysis is presented, which accurately captures both the gain and noise performance of the noise-cancelling receiver. Simulation results verify the analysis.

• 出版日期2014-1