A fully integrated IQ-receiver for NMR microscopy
| Autor: | Paul SanGiorgio, Jens Anders, Giovanni Boero |
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| Předmět: |
Nuclear and High Energy Physics
Magnetic Resonance Spectroscopy Design Nuclear-Magnetic-Resonance Cmos Transducers Biophysics Analytical chemistry Chip Biochemistry Nmr microscopy law.invention Magnetics law Micro-MRI Physics Microscopy Miniaturization Amplifiers Electronic Spins business.industry Amplifier Microcoils Equipment Design Condensed Matter Physics Nmr Equipment Failure Analysis Systems Integration Capacitor Samples Semiconductors CMOS Electromagnetic coil Optoelectronics Resolution business Micro-gradient systems Voltage |
| Popis: | We present a fully integrated CMOS receiver for micro-magnetic resonance imaging together with a custom-made micro-gradient system. The receiver is designed for an operating frequency of 300 MHz. The chip consists of an on-chip detection coil and tuning capacitor as well as a low-noise amplifier and a quadrature downconversion mixer with corresponding low-frequency amplification stages. The design is realized in a 0.13 mu m CMOS technology, it occupies a chip area of 950 x 800 mu m(2) and it draws 50 mA from a supply voltage of 1.8 V. The achieved time-domain spin sensitivity is 5 x 10(14)spins/root Hz. Images of phantoms obtained in our custom-made gradient system with 8 mu m isotropic resolution are reported. (C) 2010 Elsevier Inc. All rights reserved. |
| Databáze: | OpenAIRE |
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