Integration of Quadruple Linearly-Polarized Microstrip Grid Array Antennas for 60-GHz Antenna-in-Package Applications
Résumé
This paper demonstrates the integration of quadruple linearly-polarized microstrip grid array antennas in Ferro A6M low-temperature cofired ceramic technology for 60-GHz antenna-in-package (AiP) applications. An emphasis is given to the optimization of via transitions in the design of the low-loss array feeding network based on stripline quarter-wave matched T-junctions for the multilayer AiP structure. This paper also demonstrates the capabilities of a fully automatic probe-based antenna measurement setup for 3-D radiation pattern at 60 GHz. A special focus is placed on the calibration procedure to achieve an overall uncertainty of ±1 dB for the measurement of the realized gain of any antenna. The AiP module of dimensions 15 × 15 × 1 mm is fabricated and measured. The measured results are in good agreement with the simulated ones, showing that the AiP achieves excellent antenna performance: 10-dB impedance bandwidth (BW) from 50 to 65.6 GHz (or 25.4% at 61.5 GHz), broadside radiation from 55 to 67 GHz (or 19.5%), and 3-dB gain BW from 58.5 to 67 GHz (or 13.8%) with the maximum gain of 15 dBi at 62 GHz.
Mots clés
AiP applications
low-loss array feeding network
stripline quarter-wave matched T-junctions
multilayer AiP structure
probe-based antenna measurement setup
3-D radiation pattern
calibration procedure
frequency 60 GHz
bandwidth 50 GHz to 65.6 GHz
bandwidth 55 GHz to 67 GHz
bandwidth 58.5 GHz to 67 GHz
frequency 62 GHz
Ports (Computers)
Microstrip
Microstrip antenna arrays
Stripline
Arrays
Ceramics
Antenna measurements
60-GHz
antenna-in-package (AiP)
grid array antenna (GAA)
low-temperature cofired ceramic (LTCC)
multilayer transition}
quadruple linearly-polarized microstrip grid array antennas
millimetre wave antenna arrays
electromagnetic wave polarisation
ceramic packaging
{antenna feeds
antenna radiation patterns
calibration
Ferro A6M low-temperature cofired ceramic technology
antenna-in-package