Phase Modulation Properties of Rectangular Metallic Waveguide with Graphene Integrated in Sub-Terahertz Wave Frequency Range

Sub-terahertz (THz) frequency is attracting extensive interests for a wide range of applications. Electronically tunable phase shifters as one of the key building blocks in sub-THz systems, especially waveguide based phase shifters, encounter difficulties in both design and fabrication. In this paper, an electronically tunable rectangular metallic waveguide with graphene integrated operating in sub-THz frequency is proposed and its phase modulation properties are investigated. It shows that a maximum 34-degree linear phase shift is obtained at 315 GHz with bandwidth more than 50 GHz, and the reflection and maximum insertion loss are lower than -15 dB and 3.5 dB in this frequency range, respectively. The phase modulation feature can be applied to design of graphene based waveguide phase shifters and other graphene based waveguide phase modulators.

ISBN:978-1-5090-2018-8

Publication year:2016

Keywords:phase modulation, graphene, THZ, waveguide, phase shifters