Design and analysis of multi‐layer SIW coupler to use in phased array antenna feed network

Abstract

In this paper, a directional coupler is designed using the substrate integrated waveguide (SIW) method. The SIW coupler consists of a double‐layer with transverse rectangular slots in the middle of two layers. The proposed coupler contains three ports. The placement of ports is considered based on the generalization of the power divider network. Each layer is printed on 0.508 mm Rogers RT/Duroid 5880 (εr=2.2$\epsilon _r=2.2$ and tanδ=0.0009$tan \delta =0.0009$). The coupling level is basically controlled by the number and size of the slots. This coupling ratio changes from −5 dB to −13 dB. It is complicated to design a single‐layer feed network for a two‐dimensional phased array antenna. The designed SIW coupler can be easily generalized to the feed network for a 2D phased array antenna that consists of a large number of antenna and phase shifter elements. The SIW coupler is simulated using CST software. The results of the analyses, simulations and experiments indicate good performances of the designed coupler.

SIW based high performance bandpass filter loaded with Hilbert cells

“…SIW technology offers several advantages over microstrip technology, such as high-quality factor, low radiation loss, easy integration, high power handling, and mass production capability. SIW technology also enables the implementation of various microwave components, such as couplers [4,5], diplexers [6,7], antennas [8,9], and lters [10,11]. Therefore, SIW technology has attracted signi cant attention from both academia and industry in recent years.…”

High Gain 2X2 Planar Array Antenna for 5G Applications at 3.6GHz

“…To do this, it is necessary to develop models to simulate the characteristics of the circuit in different modes of operation, to be able to extract the parameters of the models studied by new techniques and of course the control of calculation methods to solve the equations describing the behavior of the system studied [22]. In this context several methods have been developed to meet the requirements demanded by scientists and researchers, In the 1980's an iterative method noted SIT (Spectral Iterative Technique) was proposed by Kio-Mitta and Vanden berg for electromagnetic diffraction problems and successfully applied to the analysis of reflector antennas and diffraction by any objects [23]. A method close to the spectral methods and which allows the resolution of various problems of electromagnetics was disclosed to the scientific community by H.Baudrand in 1995 it is the iterative method noted WCIP (Wave Concept Iterative Process) [24].It is an integral method based on the wave concept for solving electromagnetic scattering problems, analysis of planar circuits and has been extended to SIW (substrate integrated wave guide) structures around the year 2009 [25] [26].…”