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Wideband Planar Antenna with Modified Ground Plane
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.
Sony Ericsson Mobile Commun AB.
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2010 (English)In: Microwave and optical technology letters (Print), ISSN 0895-2477, E-ISSN 1098-2760, Vol. 52, no 11, 2581-2585 p.Article in journal (Refereed) Published
Abstract [en]

In this article a miniaturized planar antenna is presented for broadband applications. Antenna miniaturization is achieved by modifying the ground plane that creates a different current path thus increasing the effective dimension of the antenna. In addition, dual chopping, slitting, and radiator position offsetting provide wideband behavior and relatively good impedance matching. The low profile antenna with its wide bandwidth, linear phase response and quasi-omnidirectional radiation pattern is attractive for the existing and future communication devices of small size. Simulated and measured results for the proposed antenna are presented and analyzed.

Place, publisher, year, edition, pages
John Wiley and Sons, Ltd , 2010. Vol. 52, no 11, 2581-2585 p.
Keyword [en]
planar antenna, miniaturization, wideband, ground plane extension, slit, offset radiator
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-66861DOI: 10.1002/mop.25519ISI: 000281831500050OAI: oai:DiVA.org:liu-66861DiVA: diva2:405321
Available from: 2011-03-22 Created: 2011-03-21 Last updated: 2017-12-11Bibliographically approved
In thesis
1. Differential Six-port Radio Transceiver for Ultra-wideband and Wideband Antennas
Open this publication in new window or tab >>Differential Six-port Radio Transceiver for Ultra-wideband and Wideband Antennas
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Requirement for high speed wireless connectivity is propelling research in advanced communication systems. Low power and wide bandwidth of the ultra-wideband technology makes it a potential candidate for high speed data transmission. The six-port based radio systems and wideband antennas have been studied and presented in this dissertation for ultra-wideband applications.

The six-port modulator operation with carrier leakage suppression was demonstrated at a center frequency of 7.5 GHz. The six-port correlator utilizes a quarter wavelength transmission line for carrier leakage suppression, together with diodes or eld effect transistors as variable impedance terminations. Especially, a differential six-port modulator was designed and veried through simulation and measurement. The prototype shows its capability of carrier leakage suppression and high speed data transmission with 256-quadrature amplitude modulation at 50 Msymbol/s at the center frequency of 7.5 GHz. Furthermore, a differential six-port demodulator was demonstrated with the 16 quadrature amplitude modulation at a data rate of 0.8 Gbit/s at the center frequency of 7.5 GHz. It uses zero-bias anti-parallel Schottky diodes as power detectors.

Flexible antennas were designed such that they can be housed by folding it around in space limited environment with stable performance over a wide operation bandwidth. Measurement, on a exible dipole antenna with integrated balun, shows that it covers a frequency band from 6 to 11 GHz at a voltage standing wave ratio lower than 2.5 with the antenna eciency above 86%. A miniaturized monopole antenna that is not only capable of operating over an ultra-wideband but also for lower frequency bands was invented and veried. It covers a frequency range from 1.35 to 11.5 GHz. It gives a quasi-omnidirectional radiation pattern and high eciency. The antenna has a patent pending status with the United States Patent and Trademark Oce.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2011. 71 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1403
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-71837 (URN)978-91-7393-052-9 (ISBN)
Public defence
2011-12-01, TP51, Tappan, Campus Norrköping, Norrköping, Norrköping, 10:00 (English)
Opponent
Supervisors
Available from: 2011-11-07 Created: 2011-11-07 Last updated: 2011-11-07Bibliographically approved

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Owais, OwaisKarlsson, MagnusGong, Shaofang

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