Broadband Single-Layer Slotted Array Antenna in SIW Technology

Abstract

Abstract-A squint-less slot-antenna array (2D), built on a single substrate integrated waveguides (SIW), is shown. The effort needed for designing a suitable feeding network in SIW technology is justified in view of obtaining lightweight, low profile and low-cost antennas for many applications, including direct broadcast satellite. A proper definition of a "H"-shaped sub-array, made of four slot-pairs, is used to improve the input matching over a wide band. This choice allows remarkable simplification of the fabrication process, as the slots are cut directly in one of the metallic planes forming the SIW. Index Terms-Substrate Integrated Waveguide (SIW), planar slot-antenna array, Direct Broadcast Satellite (DBS).

Review of Substrate Integrated Waveguide Circuits for Beam-Forming Networks Working in X-Band

“…The radiating elements must be far enough from the discontinuities in order to avoid asymmetries in the radiation pattern. In this view, very good results can be obtained with the example illustrated in the following [61].…”

“…Squint of the main lobe of the antenna shown inFigure 18as a function of the frequency[61]: (a) E-plane; (b) H-plane.…”

“…Measured radiation pattern of the antenna shown inFigure 18[61]: E-plane (blue line); H-plane (green line).…”

Compact double‐layer substrate integrated waveguide magic Tee for X‐band applications

“…On the other hand, the main drawbacks are the higher losses due to the presence of the dielectric and the lower power management due to the small height of waveguides. In the literature, there are many examples of waveguide devices redesigned in the SIW technology, such as couplers, antennas, filters, and many other [4][5][6][7][8][9][10][11][12][13][14].…”

“…Apart from creating multiband antennas exclusively, multiband nature could also be obtained by employing band notched characteristics to ultra wideband (UWB) antennas [8][9][10][11]. Etching metamaterial inspired structures on radiating patches and/or on the feed line and/or on the ground plane are also utilized in creating this notch characteristics [12][13][14].…”