Avitabile, G. ; Cidronali, A. ; Salvador, C. ; Speciale, M.
(1997)
A GaAs MMIC phase shifter based on coupled spiral inductors.
In: Gallium Arsenide Applications Symposium. GAAS 1997, 3-5 September 1997, Bologna, Italy.
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Abstract
In this paper a GaAs MMIC phase shifter, based on a lumped quadrature hybrid, is described. The MMIC makes use of two interleaved spiral inductors in a transformer-like configuration to implement the quadrature coupler function. Two L-C resonant networks connected as load, provide the desired analog phase swing, under electronic control thus resulting a phase-shift capability of nearly 180°.
Abstract