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  • Title: A 110-170 GHz Wideband LNA Design Using the InP Technology for Terahertz Communication Applications.
    Author: Hu L, Yang Z, Fang Y, Li Q, Miao Y, Lu X, Sun X, Zhang Y.
    Journal: Micromachines (Basel); 2023 Oct 10; 14(10):. PubMed ID: 37893358.
    Abstract:
    This paper proposes a low-noise amplifier (LNA) for terahertz communication systems. The amplifier is designed based on 90 nm InP high-electron-mobility transistor (HEMT) technology. In order to achieve high gain of LNA, the proposed amplifier adopts a five-stage amplification structure. At the same time, the use of staggered tuning technology has achieved a large bandwidth of terahertz low-noise amplification. In addition, capacitors are used for interstage isolation, sector lines are used for RF bypass, and Microstrip is used to design matching circuits. The entire LNA circuit was validated using accurate electromagnetic simulation. The simulation results show that at 140 GHz, the small signal gain is 25 dB, the noise figure is 4.4 dB, the input 1 dB compression point is -19 dBm, and the 3 dB bandwidth reaches 60 GHz (110-170 GHz), which validates the effectiveness of the design.
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