测试技术学报2025，Vol.39Issue(5)：592-598,7.DOI:10.62756/csjs.1671-7449.2025062
用于集成NV磁强计的高稳定和高灵敏度微波天线
Highly Stable and Sensitive Microwave Antenna Used for Integrated NV Magnetometer
摘要
Abstract
We have designed a circular antenna plate constructed from an aluminum nitride(AlN)sub-strate,with a layer of gold deposited on its surface by an immersion technique,designed to efficiently radi-ate microwave magnetic fields onto a diamond.The AlN antenna exhibits a resonant frequency of approxi-mately 2.87 GHz,making it suitable for portable,integrated nitrogen-vacancy(NV)magnetometers.Experimental results demonstrate a two-times increase in fluorescence intensity and a 33%reduction in the bandwidth of the normalized optically detected magnetic resonance(ODMR)signal,as compared to the conventional epoxy(FR4)antenna plate,when ODMR measurements are conducted in the absence of an applied magnetic field.Stability tests further reveal that the AlN antenna provides four times greater stability than the FR4 antenna.In addition,under an applied bias magnetic field,the sensitivity of the AlN antenna is 2.9 nT/(√)Hz,while the sensitivity of the FR4 antenna is 8.7 nT/(√)Hz,a three-fold improvement in sensitivity.The use of AlN antennas in NV integrated magnetometers facilitates integra-tion by significantly reducing the size of the magnetometer itself and improving the performance metrics of the integrated sensor system.关键词
微波天线/氮化铝基板/FR4天线/氮空位磁强计Key words
microwave antenna/AlN antenna/FR4 antenna/nitrogen-vacancy magnetometer分类
数理科学引用本文复制引用
付江豪,任轩辉,杨应杰,侯琛瑜,张庆礼,马宗敏..用于集成NV磁强计的高稳定和高灵敏度微波天线[J].测试技术学报,2025,39(5):592-598,7.基金项目
国家重点研发计划项目(2023YFB3211202) （2023YFB3211202）
国家自然科学基金国际合作与交流资助项目(62220106012) （62220106012）
山西省杰出青年基金资助项目(202103021221007) （202103021221007）
山西省量子传感与精密测量重点实验室资助项目(201905D121001) （201905D121001）
