This paper presents a dual path Nuclear Magnetic Resonance (NMR) receiver dedicated to low cost NMR bio-molecular spectroscopy. Herein we present the design and implementation of CMOS based NMR receiver consisting of an integrated circuit (IC) incorporated with four mini-Coils for NMR exciting and recording purposes. The proposed 21 MHz CMOS receiver consists of differential low-noise amplifiers (LNAs), voltage buffers, phase shifters and variable gain amplifiers (VGA) integrated in single chip using 0.13 CMOS process. In this paper, we put forward the design and implementation of RF integrated circuit. We also demonstrate and discuss the simulation and experimental results. These results prove the functionality of the proposed fully differential front-end receiver occupying 1 mm2 silicon area.
['Ebrahim Ghafar-Zadeh', 'Hossein Pourmodheji', 'Sebastian Magierowski']
Differential nuclear magnetic resonance receiver: Design, implementation and experimental results