Bandwidth (computing)

Materials science

Telecommunications

Computer science

Antenna (radio)

Broadside

Multi-band device

Physics

Microstrip

Wideband

Optics

Microstrip antenna

Extremely high frequency

IEEE Transactions on Antennas and Propagation

This article presents a dual-band and dual-polarized microstrip antenna array with broadside beam scanning ability for millimeter-wave applications. Within a compact multilayer structure, wide bandwidth and high port isolation are achieved by using double-layer gridded patches with three groups of metallic via-fences. For beam scanning purpose, a prototype of <inline-formula> <tex-math notation="LaTeX">$2 \times 2$ </tex-math></inline-formula> array is designed, fabricated, and tested. The experimental results agree well with the simulations. For both orthogonal polarizations, the &#x2212;10 dB bandwidth covers 23.3&#x2013;31.7 and 42.5&#x2013;46.5 GHz with average gains of 12 and 13.1 dBi, respectively. A 3 dB beam scanning angle from &#x2212;51&#x00B0; to 43&#x00B0; at 27 GHz and &#x2212;28&#x00B0; to 30&#x00B0; at 45 GHz is obtained. The proposed array provides dual-band and wideband properties for dual orthogonal polarizations with competitive beam steering range and compact dimensions, as a feasible solution for fifth-generation (5G) millimeter-wave mobile communications.

Dual-Band Dual-Polarized Microstrip Antenna Array Using Double-Layer Gridded Patches for 5G Millimeter-Wave Applications