Abstract
A low noise amplifier (LNA) is designed, which can work stably at 2.45 GHz frequency. The noise figure (NF) is less than 1 dB and the transmission gain is greater than 14 dB. ATF54143 chip from Agilent is the core part of this LNA. ADS simulation software is utilized to analyze the noise figure and scattering parameter (S-parameter) and design the bias circuit combined with stabilization of the amplifier during the whole process. The inductance of transistor source in the schematic diagram is replaced by a short-circuit microstrip line. With the addition of negative feedback, the optimal design of stability and parameters in the circuit is completed. The circuit module is manufactured according to PCB layout afterwards. The test data illustrate that the actual parameters of the LNA satisfy the design requirements.
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Acknowledgements
This work was supported by the self-made experimental teaching instrument and equipment project fund of Nankai University, and Electronic Information Laboratorial Teaching Center.
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Wang, H. et al. (2020). Optimal Design of an S-Band Low Noise Amplifier. In: Liang, Q., Wang, W., Liu, X., Na, Z., Jia, M., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2019. Lecture Notes in Electrical Engineering, vol 571. Springer, Singapore. https://doi.org/10.1007/978-981-13-9409-6_52
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DOI: https://doi.org/10.1007/978-981-13-9409-6_52
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