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Design and analysis of defected ground structure transformer for dual-band antenna
- Source :
- The Journal of Engineering (2014)
- Publication Year :
- 2014
- Publisher :
- Wiley, 2014.
-
Abstract
- This study presents a novel dual-band antenna design methodology utilising a dual-frequency impedance transformer with defected ground structure (DGS). The proposed dual-frequency DGS impedance transformer generates a second resonant frequency from a conventional single-band antenna, resulting dual-band operation. Simulation studies illustrate that the adopted design achieves versatile configurations for arbitrary operating frequencies and diverse input impedance ranges in planar antenna structures. To experimentally verify the proposed design methodology, a dual-frequency DGS impedance transformer was implemented for a 2.4 GHz monopole antenna to obtain a 900/2400 MHz dual-band antenna. Measurement shows that the 10 dB return loss bandwidth in 900 MHz band is 34.4 MHz, whereas that in 2400 MHz band is wider than 530 MHz. Typical monopole radiation patterns are observed at both operating bands.
- Subjects :
- monopole antennas
planar antennas
multifrequency antennas
impedance convertors
defected ground structures
antenna radiation patterns
UHF antennas
defected ground structure transformer
dual-frequency DGS impedance transformer
dual-band antenna design
planar antenna structures
monopole antenna
monopole radiation patterns
frequency 2.4 GHz
frequency 900 MHz
loss 900 dB
bandwidth 34.4 MHz
Engineering (General). Civil engineering (General)
TA1-2040
Subjects
Details
- Language :
- English
- ISSN :
- 20513305
- Database :
- Directory of Open Access Journals
- Journal :
- The Journal of Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.39f4120ab3cf4612ba0c54f443ec3e77
- Document Type :
- article
- Full Text :
- https://doi.org/10.1049/joe.2014.0275