In this work, we describe the complete design flow of a 1.3-3.3-GHz active balun, exploited to generate a highvoltage swing differential local oscillator (LO) signal driving a highly linear doubly balanced resistive ring mixer. Both the LO active balun and the mixer are integrated into a Ku-band single chip monolithic microwave integrated circuits (MMIC) downconverter for the state-of-the-art telecom satellites. System performance has been maximized designing the different circuits by a holistic approach, which considers a non 50-Ω environment. The experimental validation is carried out by means of an ad hoc time-domain load-pull test bench and shows that the LO active balun provides two quasi-sinusoidal, 180 out-phased, signals with 2.4-V peak-to-peak voltage to the input ports of the mixer over a very high-impedance loading condition.
Resca, D., Bosi, G., Biondi, A., Cariani, L., Vadalà, V., Scappaviva, F., et al. (2023). Active Balun Design for Next-Generation Telecom Satellite Frequency Converters. IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS, 33(2 (February 2023)), 165-168 [10.1109/LMWC.2022.3212086].
Active Balun Design for Next-Generation Telecom Satellite Frequency Converters
Bosi G.;Vadalà Valeria;
2023
Abstract
In this work, we describe the complete design flow of a 1.3-3.3-GHz active balun, exploited to generate a highvoltage swing differential local oscillator (LO) signal driving a highly linear doubly balanced resistive ring mixer. Both the LO active balun and the mixer are integrated into a Ku-band single chip monolithic microwave integrated circuits (MMIC) downconverter for the state-of-the-art telecom satellites. System performance has been maximized designing the different circuits by a holistic approach, which considers a non 50-Ω environment. The experimental validation is carried out by means of an ad hoc time-domain load-pull test bench and shows that the LO active balun provides two quasi-sinusoidal, 180 out-phased, signals with 2.4-V peak-to-peak voltage to the input ports of the mixer over a very high-impedance loading condition.
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