Design of 3D stacked wideband Wilkinson power divider based on rectangular micro‐coaxial process

Based on transmission line theory, a 4‐way wideband coupled‐line Wilkinson power divider is designed by the authors, operating from 6 to 18 GHz. It is established by using a novel manufacturing technology with 3D stacked micro‐coaxial line, realising attractive advantages of low insertion (IL) loss and compact size. The simulated result shows that the proposed power divider of 23.5 × 14.46 × 0.9 mm obtains a maximum IL of 0.42 dB over the entire operating band. Measured results are obtained by connecting this micro‐coaxial power divider with printed circuit board, showing that the proposed structure is suitable for microwave communication systems. A 4‐way wideband coupled‐line Wilkinson power divider is established by using a novel manufacturing technology with 3D stacked micro‐coaxial line operating from 6 to 18 GHz. Attractive advantages of low insertion loss (0.42 dB for simulation) and compact size (23.5 × 14.46 × 0.9 mm) are realised.