Analysis of aperture-coupled microstrip antenna array on LTCC by FDTD

In this paper, we designed and analysis the aperture-coupled microstrip array antennas for the short range radar (SRR) system. These antennas can be designed with transmission lines and matching circuits in the same substrate LTCC. We achieved the proper impedance matching throughout the corporate feeding array configurations provides the lossless T-junction. In order to more exactly match in the T-junction, we have added slit in the junction. The return loss of arrays with feed network using T-junction dividers are analyzed using SEMCAD X tool using the finite difference time domain (FDTD) method to analyze such structures. The radiation patterns of these designed arrays are very simple and high efficiency for the applications in the millimeter-wave. The operating frequency of all our designed antennas is 24 GHz. As a result, this paper is proposed the possibility of prototyping by design of array antennas in the millimeter-wave. © 2015 SERSC.