Inductive matching technique for a feed-forward noise-canceling CMOS low-noise amplifier

Hwann Kaeo Chiou, Chin Lung Li, Hsien Yuan Liao, Sung Huang Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


An inductive matching technique is proposed for a noisecanceling CMOS low-noise amplifier (LNA). This composite LNA consists of a main amplifier and a feed-forward amplifier. The feedforward amplifier provides a noise canceling path to eliminate the noise at the output of the main amplifier. An inductor is used to tune out the remaining capacitive impedance at the output common node of two amplifiers, which provides the proper phase difference to cancel the overall noise voltage. For an optimum noise canceling bias, the measured noise figure is 2.5 dB, which is an improvement of 0.6 dB.

Original languageEnglish
Pages (from-to)72-75
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number1
StatePublished - Jan 2010


  • Composite LNA
  • Feed-forward
  • Inductive matching
  • Low-noise amplifier
  • Noise-canceling


Dive into the research topics of 'Inductive matching technique for a feed-forward noise-canceling CMOS low-noise amplifier'. Together they form a unique fingerprint.

Cite this