Cognitive Radio Concept and Challenges in Dynamic Spectrum Access for the Future Generation Wireless Communication Systems. - Sanjay Kumar; Janardan Sahay; Gajendra Kant Mishra; Sanjeet Kumar (Wirel. Pers. Commun., 2011)

Compact reconfigurable triple notch ultra-wideband bandpass filter for cognitive radio system. - Janardan Sahay; Sanjay Kumar (Int. J. Comput. Vis. Robotics, 2020)