A Composite Probe Capable of Simultaneously Measuring Two Orthogonal Magnetic-Fields

Abstract

In this brief, a broadband composite probe capable of simultaneously measuring two orthogonal magnetic-fields is proposed. A pair of center orthogonal detection loops are utilized to capture two orthogonal magnetic-field components ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$H_{x}$ </tex-math></inline-formula> and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$H_{y}$ </tex-math></inline-formula> ). In order to suppress undesired electromagnetic wave modes, two rows of via fences is placed on both sides of the probe. A pair of 2.92mm vertical compression-mount precision test connectors are used to achieve the good impedance matching. In order to verify the rationality of design, the composite probe is simulated, measured and studied. Compared with the conventional single-component probe, the proposed antenna has a unique advantage in simultaneously measuring two orthogonal magnetic-fields.