Analysis and design of rectangular microstrip antenna on two-layer substrate materials at terahertz frequency

Abstract

In this paper, an effective permittivity of the twolayer dielectric substrate material has been analyzed to enhance the electrical performance of the rectangular microstrip patch antenna at terahertz frequency. The frequency dependent effective dielectric permittivity of the substrate materials has been evaluated and result has been compared with finite integral technique based CST Microwave Studio a commercially available simulator. The input impedance characteristic with electrical performance of the rectangular microstrip patch antenna on two-layer substrate materials has also been analyzed at 600 GHz. Manipulation in the input impedance characteristic of the antenna has led to a slow wave structure. This slow wave structure has been examined at 542 GHz, and improvement in the performance has been observed without increasing the overall dimension of the proposed antenna.

Analysis of narrow terahertz microstrip transmission-line on multilayered substrate

“…However, the maximum relative error for three-layered and two-layered-substrate microstrip transmission line is about 0.98% and 1.2%, respectively. It is worthy to mention here that the presented result in this manuscript shows improvement in the accuracy of effective dielectric permittivity in comparison to our recently reported work [20]. Apart from this, there is the significant improvement in the accuracy of the present model in comparison to [25] at 1000 GHz.…”

“…The accuracy of this model decreases with the increase in the operating frequency and the number of substrate layers due to dispersive behavior of the substrate materials. Frequency-dependent effective dielectric permittivity of two-layer substrate material is calculated using a new expression [20] which is based on the integrated approach dealt separately in [21][22][23] which is restricted to the twolayer substrates material only. The schematic diagram of a multilayer substrate material microstrip transmission-line is shown in Fig.…”

“…1. To extend the analysis of the two-layered-substrate material microstrip transmission line to the multilayeredsubstrate material microstrip transmission-line, the formula presented in [20,21] is modified as:…”

Study of graded composite (LDPE/TIO2) materials as substrate for microstrip patch antennas in X-band

“…To verify that the thickness of the layers does not change during the graded substrate formation, the relative dielectric permittivity of the graded substrate structure (ε rc ) is calculated using the multilayer formulation as used in [20,21] and compared with experimental results. The theoretical relative dielectric permittivity for three layer substrate is expressed as, where h i is the height of the i th layer and ε ri is is the dielectric permittivity of the i th layer.…”

Antennas on metamaterial substrates as emitting components for THz biomedical imaging

“…The foreign objects inside the host material change the relative permittivity, ε r , and the refractive index of the photonic crystal giving unique propagating characteristics [8]. Another technique to radiate back the power lost in the substrate is the use of multiple layers of different materials with different thicknesses as a substrate [11]. In higher frequencies, researchers use metal wire metamaterials in order to manipulate the substrate modes [12].…”