Sub-1ms Instinctual Interference Adaptive GaN LNA Front-End with Power and Linearity Tuning

Autor:	Yang, Jie, Chatterjee, Baibhab, Khater, Mohammad Abu, Thorsell, Mattias, Gunnarsson, Sten E., Kiuru, Tero, Sen, Shreyas
Rok vydání:	2022
Předmět:	Electrical Engineering and Systems Science - Signal Processing Electrical Engineering and Systems Science - Systems and Control
Druh dokumentu:	Working Paper
Popis:	One of the major challenges in communication, radar, and electronic warfare receivers arises from nearby device interference. The paper presents a 2-6 GHz GaN 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 (4X increase) in order to adjust the linearity from P\textsubscript{1dB,IN}=-10.5 dBm to 0.5 dBm (>10X 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. Comment: 16 Pages, 22 Figures. Accepted in TMTT, to be published
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2211.14311 Zobrazit plný text záznamu View this record from Arxiv