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Bandwidth improvement of a circularly polarised printed monopole antenna using a lumped capacitor
- Authors
- Hoang, T. V.; Le, T. T.; Park, H. C.
- Issue Date
- 23-Jun-2016
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Keywords
- monopole antennas; microstrip antennas; antenna radiation patterns; capacitors; circularly polarised printed monopole antenna; lumped capacitor; axial-ratio bandwidth improvement; ARBW improvement; inverted-U-shaped patch antenna; reflection bandwidth
- Citation
- ELECTRONICS LETTERS, v.52, no.13, pp 1091 - 1092
- Pages
- 2
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- ELECTRONICS LETTERS
- Volume
- 52
- Number
- 13
- Start Page
- 1091
- End Page
- 1092
- ISSN
- 0013-5194
1350-911X
- 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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Related Researcher
- Park, Hyun Chang
- College of Engineering (Department of Electronics and Electrical Engineering)