120 GHz 2-bit reflection-type phase shifter based on PIN diodes switched-lines - Archive ouverte HAL
Article Dans Une Revue Electronics Letters Année : 2023

120 GHz 2-bit reflection-type phase shifter based on PIN diodes switched-lines

Résumé

In this paper, a 2-bit digital reflection-type phase shifter working at 120 GHz is presented. It uses a compact coupled-lines coupler with low insertion loss and high isolation over a wide bandwidth. The loads are made by a microstrip-line loaded by three PIN diodes whose states are tuned ON/OFF to obtain 90°, 180° and 270° phase shift relative to the reference (0°). Measurement results show RMS phase and amplitude error equal to 10.3° and 1.2 dB, respectively. The maximum insertion loss is equal to 8.6 dB, leading to a figure of merit of 31°/dB. As shown by simulation, by flipping PIN diodes and use negative voltage for biasing, the maximum insertion loss could be reduced to 3.6 dB (figure of merit of 75°/dB) along with a great improvement in RMS phase and amplitude errors, thus showing the potential of the proposed architecture.

Dates et versions

hal-04023690 , version 1 (10-03-2023)

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David Ouattara, Cédric Durand, Sylvain Bourdel, Frédéric Paillardet, Loïc Vincent, et al.. 120 GHz 2-bit reflection-type phase shifter based on PIN diodes switched-lines. Electronics Letters, 2023, ⟨10.22541/au.167772970.09401552/v1⟩. ⟨hal-04023690⟩

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