A 2GHz-band self frequency dividing quadrature mixer

Eiji Taniguchi, Chiemi Kageyama, Noriharu Suematsu

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


A 2GHz-band self frequency dividing quadrature mixer(SFDQM) is proposed. The SFDQM uses a static-type 1/2 frequency divider as LO switching circuit, and needs no external 90 degree phase shifter. As the inputs of the mixer, differential 2fLo signal and fRF signal are required to produce quadrature base band (BB) signal. Since this mixer can eliminate a 90 degree phase shifter and one of the unit mixer blocks having a LO amplifier, it realizes very low power consumption and very small die area on IC chip. The SFDQM is fabricated in 0.35μm SiGe-BiCMOS technology and it's down conversion characteristics are evaluated in 2GHz -band. It performs the conversion gain of 18.5dB and the NF of 15.1 dB with the current consumption of 3mA and the die area of 0.22 × 0.31 mm2.

Original languageEnglish
Article numberRTU3D-2
Pages (from-to)505-508
Number of pages4
JournalIEEE Radio Frequency Integrated Circuits Symposium, RFIC, Digest of Technical Papers
Publication statusPublished - 2005
Event2005 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium - Digest of Papers - Long Beach, CA, United States
Duration: 2005 Jun 122005 Jun 14


  • Converter
  • Direct conversion
  • Frequency divider
  • MMIC
  • Microwave
  • Mixer
  • Silicon


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