Design of a 2.4 GHz high-performance mixer with current bleeding topology

Wah Ching Lee, Kim Fung Tsang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


The important characteristics of a mixer including high conversion gain, low noise, high dynamic range, low third-order intermodulation distortion and low unwanted leakage signals between ports have reconsidered. A double balanced Gilbert-cell with a class-A amplifier bleeding mixer (DBGC CAAB mixer) is designed and implemented. The voltage gain of 14 dB at class-A amplifier is used to magnifier the local oscillator (LO) signal. Current of class-A amplifier is injected into the Gibert mixer as a bleeding current to improve the performance of the trans-conductor stage. The DBGC CAAB mixer achieves a conversion gain of 17.5 dB at -14 dBm LO power, and the noise figure is suppressed from 45 dB to 10.7 dB. It is important to stress that the new configuration has a third-order intermodulation (HP3) at -9 dBm which is considered to be insignificant. The DBGC CAAB mixer is implemented by using 0.18-μm RFCMOS technology and operates at the 2.4 GHz ISM application with 10 MHz intermediate frequency. The power consumption is 12 mA at 1.5 V supply voltage.
Original languageEnglish
Title of host publicationIEEE 20th International Conference on Advanced Communication Technology
Subtitle of host publicationOpening New Era of Intelligent Things, ICACT 2018
Number of pages6
ISBN (Electronic)9791188428007
Publication statusPublished - 23 Mar 2018
Event20th IEEE International Conference on Advanced Communication Technology, ICACT 2018 - Elysian Gangchon, Chuncheon, Korea, Republic of
Duration: 11 Feb 201814 Feb 2018

Publication series

NameInternational Conference on Advanced Communication Technology, ICACT
ISSN (Print)1738-9445


Conference20th IEEE International Conference on Advanced Communication Technology, ICACT 2018
Country/TerritoryKorea, Republic of


  • Current Bleeding CMOS Mixer
  • Double balance Gilbert-cell

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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