Central Electronics Engineering Research Institute

Metamaterial assisted hybrid response from frequency selective surface roll off and leaky wave resonator integrated antenna for underground applications

Abstract In emerging era of wireless technologies such as cognitive radio, wireless sensor networks etc., designing effective low frequency antennas < 1000 MHz and specifically < 700 remains a significant challenge due to its poor (often negative) gain and severely limited bandwi...

Design and simulation of high bandwidth compact folded waveguide slow wave structure for 0.65 THz traveling wave tube

This paper presents the design and simulation of a compact Folded Waveguide Slow-wave Structure for a 0.65 THz traveling-wave tube aimed at achieving a balance between bandwidth, output power, and fabrication-oriented structural simplicity. The proposed structure is analytically...

Analytical calculation of field enhancement factor of 2D structure graphene film

Field emitters are one of the promising electron sources for vacuum electronic devices operating in mm-wave and terahertz frequencies, where emission performance is critically governed by the field enhancement factor. While extensive analytical models exist for one-dimensional em...