September 2023
An 8-Element 5G Multistandard 28-/39-GHz Dual-Band, Dual-Polarized Phased Array for Compact Systems
by Shufan Wang, Abdulrahman Alhamed, and Gabriel M. Rebeiz
Device 2x2 dual-band dual-polarization multiple input multiple output (MIMO) stacked patch antennas connected to a 4x1 wideband beamformer chip.
Spectrum 28 GHz / 39 GHz
Novelty 12-layer printed circuit board (PCB) to reduce cost.
Separate patch antennas for each band for wider bandwidth instead of using stubs, slots or pins for a dual-band patch.
SiGe BiCMOS beamformer has all RF pads on one side for minimum antenna routing.
Application 5G FR2 cellular devices
Performance Effective isotropic radiated power (EIRP) is 27-30 dBm; 3dB BW is 26.5-29 GHz, 36-40 GHz
Scan is ±40° at 28 GHz, ±30°-40° at 39 GHz
Error vector magnitude (EVM) <5%