Vol. 3 No. 2 (2011), SECTION A: EXACT SCIENCES
Vol. 3 No. 2 (2011)

Implementing a Quadrature NMR Spectrometer based on a passive RC splitter-combiner network

SECTION A: EXACT SCIENCES
Dennis Cazar Ramírez
Escuela Superior Politécnica de Chimborazo
Marco Villa
Università degli Studi di Bergamo
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Keywords

NMR Spectrometer
Quadrature Signal Processing

How to Cite

Cazar Ramírez, D., & Villa, M. (2011). Implementing a Quadrature NMR Spectrometer based on a passive RC splitter-combiner network. ACI Avances En Ciencias E Ingenierías, 3(2). https://doi.org/10.18272/aci.v3i2.65
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Abstract

The present article will explain in some details the requirements of modulators and demodulators using quadrature splitters and combiners, and discuss the target specifications for these devices. The architecture of a passive RC network, useable as a quadrature splitter/combiner is then introduced, the design choices are described, the results of simulations and tests are given. Then, we present a full characterization of some of our modulators and demodulators along with a tuning strategy which achieves an outstandingly accurate quadrature signal processing, and characterizes the error terms of the device at the same time.

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References

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Halamek J., Jurak P. 1997. Analog to Digital Converters and Dynamic Range. Journal of Electrical Engineering. 48. 183-189.

RF/IF Designer"™s Handbook, Mini Circuits. 1999.

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