A broadband single-chip transceiver for multi-nuclear NMR probes
A broadband single-chip transceiver for multi-nuclear NMR probes
复制标题
DOI：
10.1063/1.4916206
复制
发表时间：
2015-04-01
影响因子：
1.6
通讯作者：
Boero, Giovanni
中科院分区：
文献类型：
--
作者：
Grisi, Marco;Gualco, Gabriele;Boero, Giovanni
本文提出了一种适用于实现多核脉冲核磁共振（NMR）探头的集成宽带互补金属氧化物半导体单片收发器。实现的单芯片收发器可以与芯片上集成的微线圈或外部LC谐振器连接，工作范围从1 MHz到1 GHz。芯片的尺寸约为1 mm（2）。它由射频（RF）功率放大器、低噪声RF混频器、混频器、音频放大器和完全集成的发射-接收开关组成。作为具体的例子，我们展示了它的使用多核NMR光谱。用外径约为150 μ m的集成线圈，在7 T下获得约1.5 × 10 ~（13）spins/Hz（1/2）的H-1自旋灵敏度。(C)2015 AIP Publishing LLC.
In this article, we present an integrated broadband complementary metal-oxide semiconductor single-chip transceiver suitable for the realization of multi-nuclear pulsed nuclear magnetic resonance (NMR) probes. The realized single-chip transceiver can be interfaced with on-chip integrated microcoils or external LC resonators operating in the range from 1 MHz to 1 GHz. The dimension of the chip is about 1 mm(2). It consists of a radio-frequency (RF) power amplifier, a low-noise RF preamplifier, a frequency mixer, an audio-frequency amplifier, and fully integrated transmit-receive switches. As specific example, we show its use for multi-nuclear NMR spectroscopy. With an integrated coil of about 150 mu m external diameter, a H-1 spin sensitivity of about 1.5 x 10(13) spins/Hz(1/2) is achieved at 7 T. (C) 2015 AIP Publishing LLC.