Sub-1-ms Instinctual Interference Adaptive GaN LNA Front End With Power and Linearity Tuning
In: IEEE Transactions on Microwave Theory and Techniques, Jg. 71 (2023-09-01), Heft 9, S. 4037-4051
Online
serialPeriodical
Zugriff:
One of the major challenges in communication, radar, and electronic warfare receivers arises from nearby device interference. This article presents a 2–6-GHz gallium-nitride (GaN) low-noise amplifier (LNA) front end with onboard sensing, processing, and feedback utilizing microcontroller-based controls to achieve adaptation to a variety of interference scenarios through power and linearity regulations. The utilization of GaN LNA provides high-power handling capability (30 dBm) and high linearity (OIP3 = 30 dBm) for radar and EW applications. The system permits an LNA power consumption to tune from 500 mW to 2 W ( $4\times $ increase) in order to adjust the linearity from $P_{\text {1 dB,IN}}=-10.5$ to 0.5 dBm ( $10\times $ increase). Across the tuning range, the noise figure increases by approximately 0.4 dB. Feedback control methods are presented with backgrounds from control theory. The rest of the controls consume $\leq 10\%$ (100 mW) of nominal LNA power (1 W) to achieve an adaptation time < 1 ms.
Titel: |
Sub-1-ms Instinctual Interference Adaptive GaN LNA Front End With Power and Linearity Tuning
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Autor/in / Beteiligte Person: | Yang, Jie ; Chatterjee, Baibhab ; Khater, Mohammad Abu ; Thorsell, Mattias ; Gunnarsson, Sten E. ; Kiuru, Tero ; Edward, Brian ; Sen, Shreyas |
Link: | |
Zeitschrift: | IEEE Transactions on Microwave Theory and Techniques, Jg. 71 (2023-09-01), Heft 9, S. 4037-4051 |
Veröffentlichung: | 2023 |
Medientyp: | serialPeriodical |
ISSN: | 0018-9480 (print) ; 1557-9670 (print) |
DOI: | 10.1109/TMTT.2023.3248957 |
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