A comparison between different cognitive radio antenna systems

Author

Tawk, Y. ; Jayaweera, S.K. ; Christodoulou, C.G. ; Costantine, J.

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of New Mexico, Albuquerque, NM, USA

fYear

2011

fDate

7-9 Dec. 2011

Firstpage

1

Lastpage

5

Abstract

This paper presents different reconfigurable antenna systems for a cognitive radio environment. Mainly, two different schemes are discussed. The first one is based on detecting the unused frequency bands via an ultra-wideband (UWB) antenna and tuning the reconfigurable antenna operation correspondingly. The second scheme is based on performing transmission via a UWB antenna while producing notch frequencies to minimize interference between the cognitive radio users. The use of reconfigurable filters within the antenna structure for both schemes is also highlighted. A comparison between both schemes is finally presented and discussed.

Keywords

cognitive radio; filters; interference suppression; radiofrequency interference; tuning; ultra wideband antennas; UWB antenna; antenna tuning; cognitive radio antenna systems; cognitive radio users; interference minimization; notch frequencies; reconfigurable antenna systems; reconfigurable filters; ultrawideband antenna; unused-frequency band detection; Microstrip antennas; Substrates; Switches; Transmitting antennas; Tuning; Ultra wideband antennas; UWB; band-pass; band-stop; channel sensing; cognitive radio; filter; reconfigurable antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communications Systems (ISPACS), 2011 International Symposium on

Conference_Location

Chiang Mai

Print_ISBN

978-1-4577-2165-6

Type

conf

DOI

10.1109/ISPACS.2011.6146216

Filename

6146216