Design of a mmWave Antenna Printed on a Thick Vehicle-Glass Substrate Using a Linearly Arrayed Patch Director and a...

Area of Science:

• Electrical Engineering
• Electromagnetics
• Antenna Design

Background:

• Vehicle antennas are crucial for modern wireless communication systems.
• Integrating antennas seamlessly into vehicle structures, like windows, presents unique challenges.
• Existing solutions may compromise aesthetics or performance for 5G frequencies.

Purpose of the Study:

• To propose and validate a novel 5G antenna design.
• To enable antenna integration directly onto vehicle window glass.
• To achieve high gain and broadband performance for 5G applications.

Main Methods:

• Design of a coplanar waveguide (CPW) antenna with a printed monopole radiator.
• Incorporation of parasitic elements, a linearly arrayed patch director, and a grid-slotted patch reflector.
• Fabrication of the proposed antenna and experimental measurement of its reflection coefficient and radiation pattern.
• Comparison of measured results with simulation data.

Main Results:

• The antenna exhibits broadband characteristics with a reflection coefficient below -10 dB from 24.1 GHz to 31.0 GHz (24.6% fractional bandwidth).
• Measured reflection coefficients reached -33.1 dB, closely matching simulation results (-25.7 dB).
• Maximum measured gain was 6.2 dBi at 28 GHz, comparable to simulation (5.5 dBi).

Conclusions:

• The proposed 5G glass antenna demonstrates high-gain and broadband performance.
• The design is feasible for integration onto vehicle window glass.
• The antenna is suitable for next-generation 5G wireless communication systems.