Vol. 1 No. 1 (2021): Journal of Millimeterwave Communication, Optimization and Modelling

Low Noise Amplifier (LNA) Design Suitable for 2.4 GHz Radar Applications

İbrahim Ethem Yılmaz
University of Karabük
JOMCOM Journal Cover

Published 07.11.2021


  • LNA,
  • Doppler Radar,
  • Noise Figure,
  • Impadance Matching,
  • Series Feedback


In radar systems and WLAN applications, receiver and transmitter circuits are used for information exchange and LNA (Low noise amplifier) circuits are used to ease the detection of the signal transmitted from the radar. To reduce the power consumption of LNA circuits, a more efficient, lower noise circuit design is required, but in which the gain is at the forefront while reducing the Noise Figure (NF). While the design provides these, attention should also be paid to parameters such as significant gain, dynamic range, stability and return loss. In this study, an LNA design that can be used in accordance with the Doppler radar operating principle, in which the consumed power is reduced, the gain is significantly high, and the noise is reduced to tolerable levels has been made. The designed LNA circuit has a structure that can also be used in WLAN applications. At operating frequency, NF and gain obtained 1.014 dB and 19.85 dB, respectively. By using a 2V 10mA biasing model in DC power, the operation of the active elements is ensured.



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