Considerations of Dielectric Property Deviation and Mechanical Limitations for Antenna-in-Package Fabrication by SiP-Based Stacked Organic Dielectric Substrates at Millimeter-Wave Frequencies
Journal
IEEE Transactions on Antennas and Propagation
Journal Volume
70
Journal Issue
2
Pages
1309-1319
Date Issued
2022
Author(s)
Abstract
Wireless communications at millimeter-wave (mmW) frequencies suffer high propagation loss and low energy efficiency. The feeding circuits in dielectric substrates may also result in antenna excitation distortions in both phases and amplitudes. Antenna-in-package (AiP) integrating active RF transceivers is considered a reliable means to shorten RF circuit path lengths and connectors to enhance user equipment (UE) antennas' radiation characteristics. However, due to the several mechanical limitations and fabrication uncertainty at mmW frequencies, AiP implementation should better consider geometric parameter effects, which may degrade its radiation performance, to reduce beamforming complexity for easy design and low-cost fabrication. Besides, by taking advantage of active RF transceiver modules to provide output amplitude ratios and phase variations, the feeding circuits can be simplified to shorten the feeding microstrip line lengths. These effects are examined and presented in this article for a practical design of an AiP fabricated for validation by comparing full-wave simulations and measurement results. Simulations and measurements also validate using the calibration technique to simplify the feeding structures to demonstrate the feasibility. ? 1963-2012 IEEE.
Subjects
Antenna array
Antenna in package (AiP)
Millimeter wave (mmW) frequency
Organic dielectric substrate
System in package (SiP)
Antenna feeders
Beam forming networks
Dielectric materials
Dielectric properties
Directional patterns (antenna)
Energy efficiency
Fabrication
Millimeter waves
Radiation effects
Substrates
System-in-package
Antenna in package
Antenna in packages
Dielectric substrates
Feeding circuit
Mechanical
Millimeter wave frequencies
Organic dielectrics
System in package
Systems in packages
Radio transceivers
SDGs
Type
journal article