Jamming insensitive frequency hopping metamaterial based electromagnetic fence application [Kariştirma duyarsiz frekans atlamali metamalzeme tabanli elektromanyetik çit uygulamasi]

The most well-known surveillance and perimeter protection systems used today count on person-centered services with conventional tools such as fences,walls and cameras. however,conventional techniques cannot always detect threats effectively. moreover,fences using different sensors are weak for reaction time when an infiltration occurs. in order to provide sufficient response time to prevent a threat,we propose an electromagnetic fence application based on software defined radio in the laboratory conditions. the fence is formed with two broadband metamaterial antennas which allow to change frequency against interference and intended jamming. according to the experimental results,it is predicted that the proposed fence system can be used to detect an activity beyond or along the perimeter.