Cross-Configured Directional UWB Antennas for Multidirectional Pattern Diversity Characteristics
G. Shrikanth Reddy, Anil Kamma, Shilpa Kharche,
Jayanta Mukherjee, Sanjeev K. Mishra
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
VOL. 63, NO. 2, FEBRUARY 2015
853 - 858
Asymmetric CPW feed, cross configuration, directional ultrawideband (UWB) antenna, diversity applications
A cross configuration of directional ultrawideband (UWB) antennas
for multidirectional pattern diversity characteristics is presented.
Initially, a printed UWB circular monopole having an asymmetric curve
shaped CPWfeed is designed as a base antenna for obtaining a directional
radiation pattern, direction of which remains fairly same for the entire
UWB. This base antenna is attached to similar antennas, in a four element cross-configuration to achievemultidirectional pattern diversity characteristics. The proposed structure provides high inter-element isolation of more than 20 dB, with an impedance bandwidth of 19.7 GHz, i.e., 1.3 GHz to 20 GHz. Transmission and diversity characteristics of the proposed antenna are analyzed. Good agreement between simulated and measured results indicates that the proposed antenna is suitable for UWB pattern diversity applications.
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