The Effects of Feeding Cable Arrangements on Radiation Pattern Measurements Using Scale Model Phantoms

A method to measure the radiation characteristics of portable antennas during their development stages using a human-equivalent phantom to suppress the undesired current leakage along the RF feeding cable has been proposed and investigated. The basic assessment of the 351 proposed method was conducted through radiation pattern measurements using a scale model phantom as well as FDTD simulations. The results confirm that embedding the RF cable into the phantom reduces the effect of the RF cable on the measurement of the radiation characteristics. This method alleviates problems resulting from RF cable routing, and is considered an effective and practical method that may be applied to phantom-related measurements of an antenna system with both full phantoms and scale models. Finally, this method is simple and convenient to apply in practice because the shape of the solid phantom is easy to work with on site.