A K-/Ka-band concurrent dual-band low-noise amplifier employing a feedback notch technique with simultaneous passband gain and stopband rejection control
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2018 Wiley Periodicals, Inc. 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.
