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W-band double-balanced down-conversion mixer with Marchand baluns in silicon-germanium technology

W-band double-balanced down-conversion mixer with Marchand baluns in silicon-germanium technology

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  • Author(s): J. Kim 1 ; K.T. Kornegay 1 ; J. Alvarado 2 ; C.-H. Lee 3 ; J. Laskar 1
    • View affiliations
    • Affiliations: 1: Georgia Electronic Design Center, Department of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, USA
      2: Georgia Electronic Design Center, Department of Electrical and Computer Engineering, Raytheon, El Segundo, USA
      3: Georgia Electronic Design Center, Department of Electrical and Computer Engineering, Samsung Design Center, Atlanta, USA
  • Source: Volume 45, Issue 16, 30 July 2009, p. 841 – 843
    DOI:  10.1049/el.2009.1128 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Engineering and Technology
Published

Presented is a monolithic W-band (75–110 GHz) down-conversion mixer consisting of a double-balanced core, Marchand-type on-chip baluns at inputs, and a two-stage output buffer, fabricated in a 200 GHz fT SiGe technology. Including the loss for input baluns, this mixer exhibits conversion gains of 14.4±2.8 dB and single sideband (SSB) noise figures of less than 19.5 dB across the entire W-band, drawing 28 mA from a 3.3 V supply.

Inspec keywords: baluns; Ge-Si alloys; microwave mixers

Other keywords: current 28 mA; Marchand-type on-chip baluns; W-band double-balanced down-conversion mixer; double-balanced core; silicon-germanium technology; frequency 75 GHz to 110 GHz; SiGe; two-stage output buffer; voltage 3.3 V

Subjects: Microwave circuits and devices; Modulators, demodulators, discriminators and mixers

References

    1. 1)
      • Dehlink, B., Wohlmuth, H.-D., Forstner, H.-P., Knapp, H., Trotta, S., Aufinger, K., Meister, T.F., Bock, J., Scholts, A.L.: `A highly linear sige double-balanced mixer for 77 GHz automotive radar applications', IEEE RFIC Symp. Dig., June 2006, San Francisco, CA.
    2. 2)
      • K.S. Ang , I.D. Robertson . Analysis and design of impedance-transforming planar Marchand baluns. IEEE Trans. Microw. Theory Tech. , 2 , 402 - 406
    3. 3)
      • N. Marchand . Transmission-line conversion transformers. Electronics , 12 , 142 - 145
    4. 4)
      • Perndl, W., Knapp, H., Wurzer, M., Aufinger, K., Meister, T.F., Bock, J., Simburger, W., Scholtz, A.L.: `A low-noise and high-gain double-balanced mixer for 77 GHz automotive radar front-ends in SiGe bipolar technology', IEEE RFIC Symp. Dig., June 2004, Fort Worth, TX, USA.
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