Design of Miniature Ultrawideband Active Magnetic Field Probe Using Integrated Design Idea
Yang Zhou,
Zhaowen Yan,
Zhangqiang Ma,
Yang Zhao,
Jie Gao,
Ruiqi Cheng,
Baocheng Huang
Affiliations
Yang Zhou
School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
Zhaowen Yan
School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
Zhangqiang Ma
School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
Yang Zhao
Beijing Engineering Research Center of High-Reliability IC with Power Industrial Grade, Beijing Smart-Chip Microelectronics Technology Co., Ltd., Beijing 102299, China
Jie Gao
Beijing Engineering Research Center of High-Reliability IC with Power Industrial Grade, Beijing Smart-Chip Microelectronics Technology Co., Ltd., Beijing 102299, China
Ruiqi Cheng
Beijing Engineering Research Center of High-Reliability IC with Power Industrial Grade, Beijing Smart-Chip Microelectronics Technology Co., Ltd., Beijing 102299, China
Baocheng Huang
Beijing Engineering Research Center of High-Reliability IC with Power Industrial Grade, Beijing Smart-Chip Microelectronics Technology Co., Ltd., Beijing 102299, China
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.
