Title:
A Dual Band Back Coupled Meanderline Antenna For Wireless LAN Applications
Author(s):
A.Khaleghi, A.Azoulay, J.C.Bolomey
Source:
61st IEEE Vehicular Technology Conference (VTC)
Vol./Issue/Date:
Volume 1, Spring. 2005
Year:
2005
Page(s):
226 - 229,
Keywords:
meanderline; antenna; WLAN; WIFI; dualband
Abstract:
In this paper, we present a novel dual band printed
meander line antenna with a shaped ground plane and a back
coupled rectangular patch. The aim was to achieve 2GHz and
5GHz covering the two main frequency bands of commercially
available WLANs. To obtain a dual band with wide bandwidths
operations, a meander line microstrip printed antenna with a
matched feed and a shaped ground plane has been first designed
at 2.45 GHz. Then, a rectangular patch was added at the back of
the meandered antenna substrate, with a small gap between the
rectangular patch and the shaped ground plane. Changing the
length of the rectangular patch allows to tune the resonance
frequency, for instance 5.25 GHz. In fact, the resonance
frequency can be continuously adjusted between 5.2 GHz and 7
GHz by changing the rectangular patch length. Furthermore, the
tuning of the second resonance frequency has very little effects on
the first one. The obtained bandwidth is 11% at 2.45 GHz and
6% at second frequency for a return loss less than -10dB.
Consequently this antenna offers sufficient flexibility for all types
of wireless local area networks in the available frequency bands.
This small antenna structure ( 31×8×1.6mm) and its achievable
low price with an SMA type connector, make it appropriate for
Notebook, PC, PDA and other commercial WLAN
communications applications.
Document:
Reference Id:
21
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