Methods to improve the bandwidth performance for compact dielectric resonator antennas

Yuehe Ge

doi:10.1002/mop.27058

Methods to improve the bandwidth performance for compact dielectric resonator antennas

Yuehe Ge^*

^*Corresponding author for this work

School of Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Two techniques are implemented to improve the impedance matching and the bandwidth of ultrawideband (UWB) rectangular stacked dielectric resonator antennas (DRAs), making them more reliable for FCC UWB application.Cutting a groove on the bottom side of the dielectric resonator can improve the impedance matching within the UWB bandwidth, whereas a square metallic patch connected to a coaxial probe to excite the DRA can extend the entire UWB. Applying the two techniques together to the rectangular stacked DRA can both improve the impedance matching and the bandwidth, without compromising any performance. Theoretical and experimental verification for the two techniques are conducted. A prototype antenna that has a dielectric volume of 12 × 8 × 14.9 mm ³ (or 0.124λ × 0.083λ × 0.152λ at 3.1 GHz) achieves a |S ₁₁| < -10 dB bandwidth of 111.2%, covering the entire FCC UWB bandwidth (3.1-10.6 GHz, 1:3.4 or 109.5%), and an average measured gain of 6 dBi over the band.

Original language	English
Pages (from-to)	2252-2256
Number of pages	5
Journal	Microwave and Optical Technology Letters
Volume	54
Issue number	10
DOIs	https://doi.org/10.1002/mop.27058
Publication status	Published - Oct 2012

Keywords

dielectric resonator antenna
stacked antenna
ultrawideband

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10.1002/mop.27058

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Methods to improve the bandwidth performance for compact dielectric resonator antennas

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Keywords

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