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A reconfigurable narrowband antenna integrated with a wideband monopole, suitable for cognitive radio applications, is proposed in this study. A set of matching circuits are designed to demonstrate that the structure can be tuned to wide range of frequencies in the narrowband mode of operation. The integrated structures have been manufactured and measured. The measured results agree well with the...
Future radio systems, such as software defined radio and cognitive radio concepts give rise to significant challenges for antenna design and in particular reconfigurable antenna design. Whilst there are many possible ways in which such systems could be configured, this paper discusses some of the range of possible antenna requirements, and some design approaches are outlined. Demonstrator antennas...
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