An Ultra-Compact and Lightweight Ceramic-Free Dual-Band GNSS Antenna Based on Distributed Capacitive Loading

Authors:

30 April 2026

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Antennas and Wireless Propagation Letters

Vol. PP (15361225) , 1-5
DOI:10.1109/lawp.2026.3689119

Abstract

This work presents an ultra-compact and lightweight ceramic-free dual-band GNSS antenna based on a characteristic-mode-guided distributed capacitive loading technique with an air-dielectric structure, where antenna miniaturization and performance enhancement are achieved through distributed capacitive loading and multi-path current excitation, respectively. Dual-band CP operation at the GNSS L5 and L1 bands is realized using a compact dual-feed stacked configuration. The fabricated antenna occupies a volume of 24 × 24 × 9 $mm^{3}$. Measured results show -10 dB impedance bandwidths of 1.2% and 1.9%, 3-dB axial-ratio bandwidths of 0.5% and 0.6%, and peak gains of 0.6 dBic and 2.9 dBic, confirming its suitability for compact GNSS applications.

Keywords

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