Jeff Weldon's Home Page

Welcome to Jeff Weldon's Home Page. I am a recent graduate from the department of Electrical Engineering and Computer Sciences at the University of California, Berkeley. I completed by Ph.D. in the area of CMOS RF circuits and systems. My research advisor was Paul Gray.

My research focused on the design of RF transmitters with an emphasis on circuits architectures that faciliate single-chip integration in a standard CMOS process and yet enable high performance and the ability to operate with multiple RF standards. One of the critical circuit blocks in the transmitter is the up-conversion mixers. This work presented a mixer that up-converts and simultaneously rejects the harmonics that are created in the mixing process. This mixer was termed the harmonic-rejection mixer or HRM. To demonstrate the techniques, a transmitter was designed to operate with both the DCS-1800 and DECT standards.

Thesis

  • " High-Performance CMOS Transmitters for Wirelesss Communications," (PDF), Ph.D. Dissertation, 2005.

    • Papers

  • " A 1.75-GHz Highly-Integrated Narrow-Band CMOS Tranmsitter with Harmonic-Rejection Mixers,"(PDF) J. Weldon, R. Narayanaswami, J. Rudell, L. Lil, M. Otsuka, S. Dedieu, L. Tee, K. Tsai, C. Lee and P. Gray. IEEE Journal of Solid-State Circuits, December 2001.
  • " A 1.75-GHz Highly-Integrated Narrow-Band CMOS Transmitter with Harmonic-Rejection Mixers,"(PDF) J. Weldon, J. Rudell, L. Lin, R. Narayanaswami, M. Otsuka, S. Dedieu, L. Tee, K. Tsai, C. Lee and P. Gray. IEEE International Solid-State Circuits Conference, February, 2001. Recipient of the Lewis Winner Award for Outstanding Paper
  • " A 1.9GHz Wide-Band IF Double Conversion CMOS Receiver for Cordless Telephone Applications,"(PDF) J. Rudell, J. Ou, T. Cho, G. Chien, F. Brianti, J. Weldon and P. Gray. IEEE Journal of Solid-State Circuits, December, 1997.
  • " Recent Developments in High Integration Multi-Standard CMOS Transceivers for Personal Communication Systems ,"(PDF) J.C. Rudell, J.J. Ou, R. S. Narayanaswami, G. Chien, J.A. Weldon, L. Lin, K.C. Tsai, L. Tee, K. Khoo, D. Au, T. Robinson, D. Gerna, M. Otsuka, and P. R. Gray Invited paper at the 1998 International Symposium on Low Power Electronics, Monterey, California
  • " A 1.9GHz Wide-Band IF Double Conversion CMOS Integrated Receiver for Cordless Telephone Applications," J.Rudell, JJ. Ou, T.Cho, G.Chien, F.Brianti, J.Weldon, and P.Gray. 1997 IEEE International Solid-State Circuits Conference (GIF/MIF/PS) Feb. 8th, 1997 Recipient of the Jack Raper Award for Outstanding Student Paper
  • " An Integrated GSM/DECT Receiver: Design Specifications ,"(PDF) J.C. Rudell, J.A. Weldon, J.J. Ou, L. Lin and P.R. Gray. UCB Electronics Research Laboratory Memorandum, Memo #: UCB/ERL M97/82 The EXCEL spreadsheet which accompanies this document. " Receiverspecs .
  • " IP over ATM with Scalability and QOS: Tag Switching vs. The IP Switch," J.Weldon, L.Lin,

    • Slides

  • " A 1.75-GHz Highly-Integrated Narrow-Band CMOS Transmitter with Harmonic-Rejection Mixers," J.Weldon, J.Rudell, L.Lin, R.Narayanswami, M.Otsuka, S.Dedieu, L.Tee, K.Tsai, C.Lee and P.Gray Presentation for the 2001 International Solid State Circuits Conference Feb. 6th, 2001
  • " Recent Developments in High Integration Multi-Standard CMOS Transceivers for Personal Communication Systems ," J.C. Rudell, J.J. Ou, R. S. Narayanaswami, G. Chien, J.A. Weldon, L. Lin, K.C. Tsai, L. Tee, K. Khoo, D. Au, T. Robinson, D. Gerna, M. Otsuka, and P. R. Gray. Presentation for the 1998 International Symposium on Low Power Electronics, Monterey, California, Aug. 11th, 1998 (GIF/MIF/PS/PDF).
  • " A 1.9GHz Wide-Band IF Double Conversion CMOS Integrated Receiver for Cordless Telephone Applications," J.Rudell, JJ. Ou, T.Cho, G.Chien, F.Brianti, J.Weldon, and P.Gray. Presentation for the 1997 International Solid-State Circuits Conference (GIF/MIF/PS) Feb. 8th, 1997
  • " An Integrated CMOS Multi-Standard Transmitter for DCS1800/DECT, " J. Weldon, M. Otsuka (Hitachi), P. Gray. 1998 Industrial Liason Program (GIF/MIF/PS), March 1998

    • Jeff's Personal Home Page

    Click here to go to my personal Home Page
    Back to the PRG Group page. 
    Jeffrey A. Weldon
University of California
211-205 Cory Hall #1772
Berkeley, CA 94720-1772

Email:  weldon@eecs.berkeley.edu
Phone: (510) 642-9399


finger weldon@hookipa