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2015-02-28
Bandwidth Optimisation for Semiconductor Junction Circulators
By
Progress In Electromagnetics Research C, Vol. 56, 125-135, 2015
Abstract
This paper presents for the first time a systematic algorithm to optimise the bandwidth for a semiconductor junction circulator with minimum magnetic bias requirements. The behaviour of the gyroelectric parameters was studied to describe the optimum biasing magnetic field for millimetre wave operation with maximum bandwidth. Perfect circulation conditions derived using a Green's function approach were analysed to determine the optimum radius and coupling half-angle for the semiconductor disk forming the circulator. Previously measured data for InSb at 77 K were used to find design parameters for optimum bandwidth of circulation at millimetre wave frequencies. The performance of the design was verified using a full-wave electromagnetic simulation package, where up to 90% 10 dB bandwidth centred at 200 GHz was achieved with magnetic biasing as low as 0.214 T.
Citation
Ghassan Nihad Jawad, and Robin Sloan, "Bandwidth Optimisation for Semiconductor Junction Circulators," Progress In Electromagnetics Research C, Vol. 56, 125-135, 2015.
doi:10.2528/PIERC14121404
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