This letter presents the design of a Doherty power amplifier (DPA) for satellite applications in the Ka-band downlink (17.3-20.3 GHz) implemented on a 100-nm GaN-Si HEMT technology. The design aims to achieve high gain and very high intrinsic linearity over a wide bandwidth of 3 GHz. The experimental characterization on the fabricated chip demonstrates that the DPA can maintain a noise-to-power ratio (NPR) higher than 25 dB and power-added efficiency (PAE) of 30% while providing 36 dBm of output power, when tested with a 100-MHz uniformly distributed signal, achieving state-of-the-art performance among the integrated power amplifiers for satellite communications.

High-Gain and High-Linearity MMIC GaN Doherty Power Amplifier With 3-GHz Bandwidth for Ka-Band Satellite Communications / Piacibello, Anna; Quaglia, Roberto; Giofrè, Rocco; Figueiredo, Ricardo; Colantonio, Paolo; Carvalho, Nuno Borges; Valenta, Vaclav; Camarchia, Vittorio. - In: IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS. - ISSN 2771-957X. - ELETTRONICO. - 34:6(2024), pp. 765-768. [10.1109/lmwt.2024.3384306]

High-Gain and High-Linearity MMIC GaN Doherty Power Amplifier With 3-GHz Bandwidth for Ka-Band Satellite Communications

Piacibello, Anna;Camarchia, Vittorio
2024

Abstract

This letter presents the design of a Doherty power amplifier (DPA) for satellite applications in the Ka-band downlink (17.3-20.3 GHz) implemented on a 100-nm GaN-Si HEMT technology. The design aims to achieve high gain and very high intrinsic linearity over a wide bandwidth of 3 GHz. The experimental characterization on the fabricated chip demonstrates that the DPA can maintain a noise-to-power ratio (NPR) higher than 25 dB and power-added efficiency (PAE) of 30% while providing 36 dBm of output power, when tested with a 100-MHz uniformly distributed signal, achieving state-of-the-art performance among the integrated power amplifiers for satellite communications.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2995755
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