LTCC-based Antenna-in-Package Array for 5G User Equipment with Dual-Polarized End-Fire Radiations at Millimeter-Wave Frequencies
Journal
IEEE Transactions on Antennas and Propagation
Date Issued
2021
Author(s)
Abstract
An antenna-in-package (AiP) of end-fire and dual-polarization at 28 GHz is presented. It is formed by four periodic antennas of broad bandwidth and high-isolation, fabricated by the low-temperature co-fired ceramics technology. The dual-polarizations are realized by integrating a horizontal metal stripline-coupled dipole with a vertical magneto-electric monopole, incorporated into a multilayer architecture for compactness. The AiP skillfully implements vertical vias and horizontal strip lines in the cavities between antennas to improve isolation and polarization purity. This AiP has numerically been examined for end-fire high gain and beam steering in user equipment (UE) applications. The prototype was measured to show good isolation lower than -25 dB from 26.5 to 29.5 GHz and agree with full-wave simulations. The antenna array is finally integrated with 1x4 boresight radiation microstrip antennas to form a complete UE AiP. IEEE
Subjects
Antenna arrays
Antenna-in-package
Baluns
Dipole antennas
dual-polarization
end-fire pattern
low-temperature co-fired ceramics
Metals
Microstrip
Microstrip antennas
Probes
5G mobile communication systems
Ceramic products
Directional patterns (antenna)
Directive antennas
Microelectronics
Microwave antennas
Millimeter waves
Polarization
Strip telecommunication lines
Temperature
Antenna in packages
Dual-polarizations
Dual-polarized
End-fire
End-fire pattern
Fire patterns
Low temperature co-fired ceramics
Micro-strips
User equipments
SDGs
Type
journal article