Bandwidth improvement of a circularly polarised printed monopole antenna using a lumped capacitor

T. V. Hoang; T. T. Le; H. C. Park

doi:10.1049/el.2016.1277

Bandwidth improvement of a circularly polarised printed monopole antenna using a lumped capacitor

T. V. Hoang, T. T. Le, H. C. Park

Department of Electronics & Electrical Engineering

Dongguk University

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

17 Scopus citations

Abstract

Axial-ratio bandwidth (ARBW) improvement of a circularly polarised printed monopole antenna using a lumped capacitor is presented. To demonstrate the effectiveness of this approach, a lumped capacitor is attached in the gap of an inverted-U-shaped patch antenna having a narrow 3 dB ARBW. Simulation shows that the ARBW improves from 4.1% (5.68-5.92 GHz) to 30.7% (4.33-5.9 GHz) with the use of a 0.5 pF capacitor. The measured results show a -10 dB reflection bandwidth of 60.5% (3.75-7 GHz), and a 3 dB ARBW of 33.3% (4.25-5.95 GHz). The advantage of the proposed design is that the 3 dB ARBW of an antenna can be easily tuned and extended with the use of only one lumped capacitor.

Original language	English
Pages (from-to)	1091-1092
Number of pages	2
Journal	Electronics Letters
Volume	52
Issue number	13
DOIs	https://doi.org/10.1049/el.2016.1277
State	Published - 23 Jun 2016

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10.1049/el.2016.1277

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abstract = "Axial-ratio bandwidth (ARBW) improvement of a circularly polarised printed monopole antenna using a lumped capacitor is presented. To demonstrate the effectiveness of this approach, a lumped capacitor is attached in the gap of an inverted-U-shaped patch antenna having a narrow 3 dB ARBW. Simulation shows that the ARBW improves from 4.1% (5.68-5.92 GHz) to 30.7% (4.33-5.9 GHz) with the use of a 0.5 pF capacitor. The measured results show a -10 dB reflection bandwidth of 60.5% (3.75-7 GHz), and a 3 dB ARBW of 33.3% (4.25-5.95 GHz). The advantage of the proposed design is that the 3 dB ARBW of an antenna can be easily tuned and extended with the use of only one lumped capacitor.",

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Bandwidth improvement of a circularly polarised printed monopole antenna using a lumped capacitor

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