Microstrip patch antennas on EUROCIRCUITS process

The authors investigate the 3D modeling of ENIG surfaces on PCBs for microstrip patch antennas at 24 GHz. A CST Microwave Studio simulation of patches with various dimensions is performed. The results are compared to measurements of a total number of 26 patches processed at Euro circuits on Rogers RO4350B laminate. The accuracy of simulation and production tolerances are estimated by the deviations between simulation, measurement and regression of the measured frequency response of each antenna.