Chinese Journal of Magnetic Resonance >
Design of Broadband T/R Switch for Magnetic Resonance
Received date: 2021-03-10
Online published: 2022-03-02
Transmit/receive (T/R) switch is used to switch the transmission and reception channels in nuclear magnetic resonance (NMR) spectrometer, which is required high isolation of high-power signals and low insertion loss of NMR signals. In addition, the general narrowband T/R switch is no longer applicable in broadband magnetic resonance spectrometer. This paper presents a positive-intrinsic-negative (PIN) diode-based T/R switch design with low insertion loss (less than 1 dB), high isolation of high-power signals (more than 75 dB) and short switching time (1 μs) in broadband (10~100 MHz). Substituting the broadband T/R switch for the narrowband T/R switch of the general probe, the NMR signals of hydrogen and fluorine nuclei at two different frequencies were measured on a 0.5 T NMR spectrometer, which verified the broadband performance of the T/R switch.
Shou-quan YAO , Jun-cheng XU , Ming SHEN , Bing-wen HU , Yi-qiao SONG , Yu JIANG . Design of Broadband T/R Switch for Magnetic Resonance[J]. Chinese Journal of Magnetic Resonance, 2022 , 39(1) : 115 -122 . DOI: 10.11938/cjmr20212895
| 1 | LI Y J , ZHAO W , GUO X H , et al. NMR data analysis of manidipine hydrochloride[J]. Chinese J Magn Reson, 2021, 38 (1): 110- 117. |
| 1 | 李玉江, 赵伟, 郭晓河, 等. 盐酸马尼地平的核磁共振数据解析[J]. 波谱学杂志, 2021, 38 (1): 110- 117. |
| 2 | ZALESSKIY S S , DANIELI E , BLUMICH B , et al. Miniaturization of NMR systems: Desktop spectrometers, microcoil spectroscopy, and "NMR on a chip" for chemistry, biochemistry, and industry[J]. Chem Rev, 2014, 114 (11): 5641- 5694. |
| 3 | SPENGLER N , H?FFLIN J , MOAZENZADEH A , et al. Heteronuclear micro-Helmholtz coil facilitates μm-range spatial and sub-Hz spectral resolution NMR of nL-volume samples on customisable microfluidic chips[J]. PloS one, 2016, 11 (1): e0146384. |
| 4 | TADANKI S , COLON R D , MOORE J , et al. Double tuning a single input probe for heteronuclear NMR spectroscopy at low field[J]. J Magn Reson, 2012, 223, 64- 67. |
| 5 | LI Y , LOGAN T M , EDISON A S , et al. Design of small volume HX and triple-resonance probes for improved limits of detection in protein NMR experiments[J]. J Magn Reson, 2003, 164 (1): 128- 135. |
| 6 | LIAO Z W , CHEN J F , YANG C S , et al. A design scheme for 1H/31P dual-nuclear parallel MRI coil[J]. Chinese J Magn Reson, 2020, 37 (3): 273- 282. |
| 6 | 廖志文, 陈俊飞, 杨春升, 等. 1H/31P双核并行磁共振成像线圈的研究与设计[J]. 波谱学杂志, 2020, 37 (3): 273- 282. |
| 7 | PARK S B, MURALI P S. Multi-band transmit-receive switch for wireless transceiver: US, 7936237[P]. 2011-5-3. |
| 8 | HOPPER T , MANDAL S , CORY D , et al. Low-frequency NMR with a non-resonant circuit[J]. J Magn Reson, 2011, 210 (1): 69- 74. |
| 9 | MANDAL S , UTSUZAWA S , CORY D , et al. An ultra-broadband low-frequency magnetic resonance system[J]. J Magn Reson, 2014, 242, 113- 125. |
| 10 | MANDAL S , UTSUZAWA S , SONG Y Q . An extremely broadband low-frequency MR system[J]. Micropor Mesopor Mat, 2013, 178, 53- 55. |
| 11 | PAO K H, HSU C Y, CHUANG H R. A 3-10 GHz broadband CMOS T/R switch for UWB applications[C]//2006 European Microwave Integrated Circuits Conference, Manchester. UK: IEEE, 2006, 452-455. |
| 12 | MOU S, KAIXUE M, SENG Y K, et al. A DC to 30 GHz ultra-wideband CMOS T/R switch[C]//2011 Semiconductor Conference Dresden. Dresden, Germany: IEEE, 2011, 1-4. |
| 13 | LIU H E, LIN X, CHANG H Y, et al. 10-MHz-to-70-GHz ultra-wideband low-insertion-loss SPST and SPDT switches using GaAs PIN diode MMIC process[C]//2018 Asia-Pacific Microwave Conference (APMC). Kyoto, Japan: IEEE, 2018, 1217-1219. |
| 14 | DIAO Y J, XIE J Y, XU J C, JIANG Y, et al. A high-speed driver for NMR T/R switch[J]. Chinese J Magn Reson, 2016, 33(1): 37-43. |
| 14 | 刁玉剑, 谢君尧, 徐俊成, 等. 磁共振快速T/R开关驱动器研制[J]. 波谱学杂志, 2016, 33(1): 37-43. |
/
| 〈 |
|
〉 |