A Resonant Magnetic Probe Capable of Simultaneously Measuring Two Orthogonal Magnetic-Field Components

In this brief, a resonant magnetic probe with multi component characteristics is proposed and printed on a four-layer PCB. The proposed resonant magnetic probe is made up of a pair of LC resonant circuits including open stubs as capacitors and shorted stubs as inductors, a hybrid-ring detection structure with two shorted vias, and two transmission lines loaded with 50 Omega SMA connectors. Two rows of via fences are introduced into the resonant magnetic probe to restrict the undesired electromagnetic mode. To demonstrate the rationality of the design, the simulated and measured results are given and compared. The corresponding results reveal that the proposed resonant magnetic probe not only has a high sensitivity at 1.575 GHz, but also simultaneously tests two orthogonal magnetic-field components.