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IJSTR >> Volume 9 - Issue 1, January 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



An Ultra-Wide Band Octagonal Antenna With Reconfigurable Narrowband Antenna For Cognitive Radio Applications

[Full Text]

 

AUTHOR(S)

Buddi Bhanu Shankar, Dasari Anantha Sai Kumar, Garlapati Venkata Kowndinya, Arjuna Muduli, Deepak Kumar Nayak

 

KEYWORDS

Cognitive radio, ultra-wide band, narrowband, return loss

 

ABSTRACT

The idea of this paper is to design a dual port ultra-wide band antenna integrated with reconfigurable narrow band antenna for cognitive radio applications. The narrow band antenna is a microstrip patch antenna attached at the back side of the ultra-wide band octagonal antenna. The ultra-wide band senses over the frequency range of 3.91 – 11.29 GHz. The Narrowband reconfigurable antenna is seen to operate at 6.39GHz, 6.90GHz, 7.81GHz, 8.94 GHz. Isolation between both the ports is kept less than -15 dB over entire operating band. Reconfiguration is done with the help of pin diode. The antenna switched from ultra-wide band to narrow band by switching ‘ON’ the pin diode.

 

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