CST – Computer Simulation Technology

Title:
BLUETOOTH/UWB DUAL-BAND PLANAR DIVERSITY ANTENNA WITH WiMAX AND WLAN BAND-NOTCH CHARACTERISTICS
Author(s):
Gopi S. Reddy, Ashish Chittora, Shilpa Kharche, Sanjeev Mishra, Jayanta Mukherjee
Source:
Progress In Electromagnetics Research B
Vol./Issue/Date:
Volume: 54, 2013
Year:
2014
Page(s):
303-319
Abstract:
In this paper, a stage wise realization of compact Bluetooth | UWB dual-band diversity antenna with WiMAX and WLAN band-notch characteristics is presented. The proposed structure consists of two co-planar semicircular dual band-notch monopole antennas, mounted with planar spiral. Individual antenna configuration provides an impedance bandwidth (VSWR < 2) for dual- band i.e., both Bluetooth and UWB bands. For dual band-notch characteristic, two sets of spirals are capacitively coupled with the feed line of antenna. This configuration provides band-notch (VSWR < 2) for WiMAX i.e., (3.3{3.6 GHz) and WLAN (5.13{5.85 GHz) bands. For enhancing reception capabilities of the proposed structure, twin coplanar antennas are used to ful¯ll diversity requirements. However, due to coplanar and close proximity to each other, there is high possibility of mutual coupling between coplanar antenna elements. To address the mutual coupling between elements, cross-strip variable-sized frequency selective structures are used. Antenna diversity of the proposed structure is validated by measuring radiation pattern characteristic and envelop co-relation factor (ECC). A good agreement between measured and simulated responses ensures that the proposed diversity antenna can be used for interference free Bluetooth/UWB dual-band applications.
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