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A K‐/Ka‐band concurrent dual‐band low‐noise amplifier employing a feedback notch technique with simultaneous passband gain and stopband rejection control
Author(s) -
Lee Jaeyoung,
Nguyen Cam
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31169
Subject(s) - passband , stopband , low noise amplifier , multi band device , noise (video) , noise figure , band stop filter , physics , amplifier , automatic gain control , electronic engineering , band pass filter , engineering , electrical engineering , computer science , telecommunications , optics , bandwidth (computing) , filter (signal processing) , low pass filter , artificial intelligence , antenna (radio) , image (mathematics)
A K‐/Ka‐band concurrent dual‐band low‐noise amplifier (LNA) employing an inductor feedback dual‐band load is presented. The dual‐band LNA can control the passband gain and stopband rejection performances to overcome the gain and notch performance degradation from process variations by adjusting the bias level of the second‐stage's inverting amplifier. The concurrent dual‐band LNA achieves peak gains of 21.3/23.2 dB at 21.5/36.5 GHz, respectively, and best noise figures of 2.6/2.5 dB at the low/high passbands, respectively. The dual‐band LNA exhibits the best noise figure and gain‐balance performances as compared to those operating at similar frequencies.