Computer-Aided Tuning of Filtering Patch Antennas

Recently, we have proposed an effective approach to diagnose the coupling matrix of filtering patch antennas from S11measurements. In this paper, we demonstrate the computer-aided tuning of filtering antennas using the proposed approach. All coupling coefficients can be extracted through a single round of simulation/measurement. By diagnosing coupling coefficients of the antenna in its current state and comparing them with the target values, the adjustment direction of the antenna structure can be determined—thereby enabling the antenna to achieve the target performance within a few iterations. Meanwhile, it is suitable for filtering antennas consisting of single-mode radiators (SMRs) and an multimode radiator (MMR). To elaborate on this, two design examples are presented. The proposed method paves the way for the automated design of antennas in the future.