1. Design of Miniature Ultrawideband Active Magnetic Field Probe Using Integrated Design Idea
- Author
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Yang Zhou, Zhaowen Yan, Zhangqiang Ma, Yang Zhao, Jie Gao, Ruiqi Cheng, and Baocheng Huang
- Subjects
miniaturized ,ultrawideband ,magnetic ,active probe ,high sensitivity ,near-field measurement ,Chemical technology ,TP1-1185 - Abstract
This article presents a miniature ultrawideband active magnetic probe which is composed of a passive structure and an active amplification circuit structure. The active circuit mainly contains two chips, specifically an amplification chip (HMC797APM5E) and a power management chip (HMC980LP4E). The maximum size of the probe is no more than 64 × 41.5 mm2. Compared with the passive probe with the same-sized loop, the sensitivity of the proposed probe is enhanced by 25 dB through the active circuit design. The working frequency bandwidth of the proposed probe can cover 9 kHz to 18 GHz. Additionally, the flatness is about ±4 dB in terms of |S21| in the stable working bandwidth. It is efficient for high-frequency near-field scanning.
- Published
- 2023
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