In this paper, a wideband wide-angle scanning phased array is presented, capable of covering the entire Sub-6G frequency range. The array has linear polarization and is capable of wide-angle scanning capabilities. Notably, the array achieves a continuous impedance bandwidth of 18:1 at the broadside (VSWR < 3). As the scanning angle increases, a wide scanning range (±70°) can be achieved, with VSWR below 4 at each angle. However, in the H-plane, the VSWR worsens when scanning beyond 70°. In addition to building on the tightly coupled dipole array (TCDA) concept, a novel ring-type resistive frequency selective surface (FSS) card is designed, which is frequency related and adjusted for maximum radiation efficiency across the whole working band. Furthermore, a tapered balun is employed for feeding, which realizes the desired large operating bandwidth. Finally, a 4 ×4 array prototype was simulated and fabricated, demonstrating its suitability for 5G ultra-wideband beamforming arrays.
A Wideband Wide-Angle Scanning Phased Array for Sub-6G With Integrated Tapered Balun and FSS
Khan, Zakir;
2024-01-01
Abstract
In this paper, a wideband wide-angle scanning phased array is presented, capable of covering the entire Sub-6G frequency range. The array has linear polarization and is capable of wide-angle scanning capabilities. Notably, the array achieves a continuous impedance bandwidth of 18:1 at the broadside (VSWR < 3). As the scanning angle increases, a wide scanning range (±70°) can be achieved, with VSWR below 4 at each angle. However, in the H-plane, the VSWR worsens when scanning beyond 70°. In addition to building on the tightly coupled dipole array (TCDA) concept, a novel ring-type resistive frequency selective surface (FSS) card is designed, which is frequency related and adjusted for maximum radiation efficiency across the whole working band. Furthermore, a tapered balun is employed for feeding, which realizes the desired large operating bandwidth. Finally, a 4 ×4 array prototype was simulated and fabricated, demonstrating its suitability for 5G ultra-wideband beamforming arrays.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
