Multiband, Shorted, Metallic-Plate Dipole Antenna for Wi-Fi 8 and 6G Upper Mid-Band Operation

Abstract

A shorted, metallic-plate dipole antenna capable of functioning in the (2.4, 5, 6) GHz Wi-Fi 8 bands and the 6G upper mid-band in the 7125 MHz to 8400 MHz range is proposed. The antenna structure consists of symmetrical dipole arms, tuning slots, and a shorting portion, all built on a single flat metallic plate of 0.2 mm thickness and with dimensions of 12 mm × 35 mm. The dipole design can operate at the 0.5 λ, 1.5 λ, and 2.5 λ dipole resonances. The first resonant mode contributes to the lower band for 2.4 GHz operation, while the two higher-order modes form a wide frequency range of 5150 MHz to 8400 MHz for (5, 6) GHz Wi-Fi bands and also the 7 GHz to 8 GHz range of the 6G upper mid-band. With a small width of 0.096 λ at 2.4 GHz and the antenna feeding using the small coaxial cable, various antenna-placement possibilities can be expected for practical applications inside the communication devices.