http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/949 2013-05-22T00:26:32Z http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2758 C-shaped slot loaded reconfigurable microstrip antenna Shynu, S V; Augustin, G; Aanandan, C K; Mohanan, P; Vasudevan, K A new electronically reconfigurable dual frequency microstrip patch antenna with highly simplified varactor tuning circuitry is presented. The proposed design allows relatively independent selection of the two operating frequencies. Tuning ranges of 7.1 and 4.1% are realised for the two resonant frequencies without the use of any matching circuits. 2006-03-16T00:00:00Z http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2757 Radar cross-section enhancement of dihedral corner reflector using fractal-based metallo-dielectric structures Chandran, A R; Gopikrishna, M; Aanandan, C K; Mohanan, P; Vasudevan, K Effective use of fractal-based metallo-dielectric structures for enhancing the radar cross-section (RCS) of dihedral corner reflectors is reported. RCS enhancement of about 30 dBsm is obtained for corner reflectors with corner angles other than 90deg. This may find application in remote sensing and synthetic aperture radar. 2006-09-28T00:00:00Z http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2741 Compact dual-band antenna for wireless access point Gijo, Augustin; Shynu, S V; Mohanan, P; Anandan, C K; Vasudevan, K A compact dual-band printed antenna covering the 2.4 GHz (2400-2485 MHz) and 5.2 GHz (5150-5350 MHz) WLAN bands is presented. The experimental analysis shows a 2:1 VSWR bandwidth of up to 32 and 8% for 2.4 and 5.2 GHz, respectively. The measured radiation patterns are nearly omnidirectional, with moderate gain in both the WLAN bands. 2006-04-27T00:00:00Z http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2740 Reactive loaded microstrip leaky wave antenna for low cost beam steering applications Gijo, Augustin; Shynu, S V; Mohanan, P; Anandan, C K; Vasudevan, K A novel fixed frequency beam scanning microstrip leaky wave antenna is reported. The beam scanning at fixed frequency is achieved by reactive loading. Simulation and measured results shows frequency scanability of 80° as well as fixed frequency beam steering of 68° over the −10 dB impedance band of 4.56–5.06 GHz. 2006-11-01T00:00:00Z