Parametric Study of Waveguide Slots and Analysis of Radiation Pattern for the Design of Waveguide Array Antenna

Abstract

Abstract-The characteristics of radiating longitudinal slots in a rectangular waveguide have been studied. A moment method solution is used with entire basis expansion and testing functions (Galerkin) including the effect of wall thickness. It is shown in this paper. 1) The determination of different parameters like VSWR, reflection coefficients and insertion loss are calculated with the results of normalize reactance and conductance. 2) The Taylor distribution approach with specific SLL for desired linear aperture array antenna. The resonant conductance or resistances are calculated from desired amplitude distribution. The formulation uses transmission matrix approach. The computed result shows excellent agreement with measured results. CST Microwave studio is used for the simulation and is totally based on FIT techniques.

Absorption performance of biomass hollow pyramidal microwave absorber using multi-slot array technique

“…Based on slot antenna theory, this project focuses on the characteristics of rectangular slotted array on biomass hollow pyramidal microwave absorber, considering the shape, size and arrangement of the slotted array. Rectangular slot has been chosen primarily due to its excellent performance in antenna gain and bandwidth [33]- [35]. This paper proposes a new alternative method to improve the absorption performance by creating rectangular multi-slot array at different orientation on hollow pyramidal microwave absorbers.…”

Design and Fabrication of a Sectoral Beam Slotted Antenna in Siw Technology for Surveillance Applications at Millimeter Waves

“…The state of art of antennas radiating a sectoral pattern presents only few examples of antennas in compact planar multilayer technology, since in general sinc-shaped or tapered aperture distributions are synthesized by means of horn arrays [21], horn antennas with shaped dielectric lenses [21][22][23] or EBG structures [24], and commonly reflector systems [25]. Instead, in this paper, we propose the design and optimization of a sectoral beam standing-wave slotted antenna array for surveillance applications at 76.5 GHz, following the systematic procedure explained in detail in [26] and profitably used in [27][28][29]. It is worth noting that the proposed antenna has been fabricated by using the PCB technology normally adopted in electronics, hence it is planar, relatively low-cost, very compact and lightweight.…”