Asynchronous Measurement of Transient Phase-Shift Resulting From RF Receiver State-Change

作者：Zeidan Mohamad A^*; Banerjee Gaurab; Abraham Jacob A

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2013, 60(10): 2740-2751.

DOI：10.1109/TCSI.2013.2249179

• Asynchronous
• BER
• phase-shift
• RF receiver

In a wireless receiver, a down-converted RF signal undergoes a transient phase shift, when the gain state is changed to adjust for varying conditions in transmission and propagation. A method is developed, in which such phase shifts are detected asynchronously, and their undesirable effects on the bit error rate are corrected. The method was developed for and used in, the system-level characterization and calibration of a 65-nm CMOS UHF receiver. The phase-shifts associated with specific gain-state transitions were measured within a test framework, and used in the baseband signal processing blocks to compensate for errors, whenever the receiver anticipated a gain-state transition.

• 出版日期2013-10