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Abstract In this paper, a differentially fed broadband dual‐polarised dipole antenna with parasitic elements is proposed. The presented antenna comprises a pair of strip dipoles as driven elements, four square patches as internal parasitic elements, four rectangular patches with cut corners as external parasitic elements, and two pairs of coaxial cables as feeding structures placed orthogonally to excite the driven strip dipoles to achieve ±45° dual polarisation. Furthermore, two additional dual‐polarisation modes can be simulated and a broadband dual‐polarised antenna can be obtained by positioning the external and internal parasitic elements to the end and at the edge of driven elements, respectively. The presented antenna provides wide bandwidth using these dual‐polarisation modes. The measurement results indicate that the presented antenna has excellent characteristics with a wide impedance bandwidth (IBW) of 68.4% (|Sdd11|

Abstract A magnetic near‐field probe (H‐field probe) with dual output has been developed using a four‐layer printed circuit board (PCB) technique. To achieve the improvement of detection sensitivity, the symmetrical double‐loop is adopted to double the detection signal while suppressing the electric field coupling, which is also illustrated in a circuit model. The calibration factor (defined as the ratio of the external magnetic field to the induced response voltage of the probe) of the proposed H‐field probe reaches 37.74 [dB (A/m)/V] at 0.5 GHz with the loop area of 0.8 mm2, resulting in a better sensitivity than the single‐loop probe. For the suppression of unwanted electric field a floating shield is added to the bottom of the probe, leading to an excellent common electric field suppression ratio of 29 dB in the frequency range up to 10 GHz. The probe is also characterised by parameters such as high differential electric field suppression, spatial resolution and probe influence on the device under test.