Broadband and efficient patch array antenna fed by substrate integrated waveguide feed network for Ku‐band satellite applications

Abstract

A new class of multi-layer microstrip patch antenna (MPA) array fed by substrate integrated waveguide (SIW) cavities is presented for Ku-band applications. An efficient compact multi-layer SIW feeding network is designed, which has lower losses than the conventional corporate feeding network based on microstrip lines or coplanar waveguides. A 4 Â 4 array consists of four stacked layers, including three based on the SIW technology as a feeding network and one layer for the radiating antenna array. Each layer can easily be fabricated from a dielectric substrate and processed using the printed circuit board (PCB) technology.Afterward, all the PCB laminates are stacked together and tied by screws. The measured antenna operates from 11.2 to 13.6 GHz achieving 19.35% bandwidth. The measured peak gain at 12.5 GHz is 17.1 dBi, equivalent to 71.47% aperture efficiency. The fabricated array exhibits several advantages: broadband, low cost, compactness, high radiation efficiency, high aperture efficiency, and lightweight, which makes it a candidate for Ku-band satellite applications.

eHealth: A Survey of Architectures, Developments in mHealth, Security Concerns and Solutions

“…In this regard, engineers believe that further Ka-band development will enable consumer-level satellite phone calls, enhanced emergency response efforts, and other revolutionary functions [ 134 ]. In recent years, there has been a significant effort to build satellite phased array antennas for broadband communications [ 135 ]. This will provide broadband capabilities to both land and marine vehicles, as well as boost worldwide Internet connectivity, which will ultimately enhance the delivery of eHealth services [ 136 ].…”

“…In recent years, there has been a significant effort to build satellite phased array antennas for broadband communications [ 135 ]. This will provide broadband capabilities to both land and marine vehicles, as well as boost worldwide Internet connectivity, which will ultimately enhance the delivery of eHealth services [ 136 ].…”

A Wideband Feed Network for Vivaldi Antenna Arrays

“…Table 3 compares the performance of the proposed wideband Vivaldi antenna array with similar wideband arrays in the literature [4][5][6][7][8].…”

“…e proposed array in this paper achieved a wider useable bandwidth as well as a higher maximum gain compared to [4,5], which has a similar single layer feed network structure. e array structures in [6][7][8] utilize multilayer feed networks such as a substrate-integrated waveguide (SIW) or an electromagnetic band gap (EBG) structure power divider. e advantage of these array structures is that they are more compact than the proposed array, however, the bandwidths achieved are less than that of the proposed antenna array.…”

“…ese feed networks were combined with di erent radiation elements to realize wideband arrays, e.g., patch elements to achieve a bandwidth of 5.7% [3], UWB monopoles with a bandwidth of approximately 89% [4], and also Vivaldi antenna elements with a bandwidth of 84% [5]. Other similar wideband antenna arrays include the use of multiple substrate layered feed networks such as substrate-integrated waveguide (SIW) [6,7] and an electromagnetic band gap (EBG) power divider [8] used to feed di erent patch elements. ese antenna arrays achieved bandwidths between 20% and 50%.…”