Year: 2026
Type: article
Abstract: This study investigates zinc aluminate (ZnAl 2 O 4 , denoted as Z)-based microwave dielectric ceramics (MDCs) tailored for wireless communication applications, with an emphasis on microstrip patch antenna performance. Titanium doping (ZT) and co-doping with magnesium (ZTM) were employed to enhance essential dielectric parameters, including a near-zero temperature coefficient of resonant frequency (τ f ≈ 0), moderate relative permittivity (ε r < 20), and low dielectric loss. The synthesized ZT sample demonstrated a relative permittivity (ε r ) of 13.49 and dielectric loss (tanδ) of 0.39, while the ZTM composite exhibited ε r = 14.57 and tanδ = 0.158. Antenna prototypes fabricated using these materials showed excellent return losses of –25.96 dB (ZT) and –16.89 dB (ZTM) at an operating frequency of 2.19 GHz, with voltage standing wave ratios (VSWR) below 2, confirming efficient impedance matching. These results position ZnAl 2 O 4 -based MDCs as promising dielectric candidates for S-band microwave and wireless communication systems.
Author: Srilali Siragam
Institution: Swarnandhra College of Engineering and Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,990
OpenAlex ID: W7130829101