Consideration of linearity in cascode low noise amplifiers using double derivative superposition method with a tuned inductor

Chi W. Park, Jichai Jeong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)


In this paper, we propose a highly linear low noise amplifier (LNA) using the double derivative superposition method with a tuned inductor. This topology has an auxiliary common gate stage of the cascode amplifier to cancel each third order intermodulation distortion (IMD3) component and can provide a high third order input intercept point (IIP3) for the 5.25 GHz frequency band. From the simulation results using the TSMC 0.18 μm RF CMOS process, the IIP3 in the proposed cascode LNAs can be improved by 9 dB, compared with the conventional derivative superposition method. The proposed low noise amplifier achieves an IIP3 of +15 dBm with a gain of 10.5 dB, a noise figure (NF) of 2.4 dB, and a power consumption of 6 mA at 1.5 V.

Original languageEnglish
Title of host publication2007 Korea-Japan Microwave Conference, KJMW2007, Technical Digest 2007
Number of pages4
Publication statusPublished - 2007 Dec 1
Event2007 Korea-Japan MicroWave Conference, KJMW 2007 - Naha, Okinawa, Japan
Duration: 2007 Nov 152007 Nov 16


Other2007 Korea-Japan MicroWave Conference, KJMW 2007
CityNaha, Okinawa



  • Derivative superposition (DS)
  • Field-effect transistor (FET)
  • Inter-modulation distortion (IMD)
  • Low noise amplifier (LNA)
  • Third order input intercept point (IIP3)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Communication

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