On the Design of Gyroelectric Resonators and Circulators using a Magnetically Biased Two Dimensional Electron Gas (2DEG)
Ghassan N. Jawad, Robin Sloan, Mohamed Missous
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Vol. 63 No. 5
Gyroelectric Disk, Perfect Circulation Conditions, 2-DEG Circulator, Two Dimensional Electron Gas
This paper presents a theoretical investigation into the feasibility of designing tunable resonators and circulators exploiting the gyroelectric behavior of the high mobility two dimensional electron gas (2-DEG). Operational regions are assigned and the resonant and perfect circulation conditions for 2-DEG materials analyzed to demonstrate the potential of the design. Performance of the designed resonators and circulators are verified by inspecting the scattering parameters resulting from a Green’s function approach and full-wave EM simulation of the structures. Theoretical results prove the possibility of building planar 2-DEG based resonant microwave devices to
work below the cyclotron frequency. Moreover, a 2-DEG circulator working in the same frequency range is theoretically feasible providing a high steady magnetic field is applied. A microwave circulator based on a magnetically biased 2DEG cooled to 77 K is presented to work at 200GHz in the presence of a 2.5T magnetic field bias.
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