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Recent content by Needbias

  1. N

    how to design RF 3dB 90 degree coupler using ferrite core?

    rf 3db thanks very much!
  2. N

    how to design RF 3dB 90 degree coupler using ferrite core?

    rf 3db hybrid designs I need to construct a 100~200Mhz 3dB 90° Hybrid using a ferrite core transformer,can u tell the detail?THANKS!
  3. N

    how to design RF 3dB 90 degree coupler using ferrite core?

    quadrature coupler ferrite but what is the structure? any detail information?thanks!
  4. N

    how to design RF 3dB 90 degree coupler using ferrite core?

    hybrid coupler ferrite who can tell me?thanks very much!
  5. N

    how to design 3db-RF hybrid coupler use core transformers?

    RF range:100~200MHZ thanks!
  6. N

    Req help:Suspended substrate low-pass filter?

    can you upload it? thanks very much!
  7. N

    Req help:Suspended substrate low-pass filter?

    Anybody can help me? Thanks!!!
  8. N

    Req help:Suspended substrate low-pass filter?

    I think it use the dual of the low-pass prototype.
  9. N

    Req help:Suspended substrate low-pass filter?

    It's a generalized chebyshev low-pass filter,please refer: A Novel Class of Generalized Chebyshev Low-Pass Prototype for Suspended Substrate Stripline Filters Alseyab, S.A.; Microwave Theory and Techniques, IEEE Transactions on Volume 82, Issue 9, Sep 1982 Page(s):1341 - 1347
  10. N

    Req help:Suspended substrate low-pass filter?

    How to design the genralized chebshev low pass filter of this type?The dash line is on bottom of substrate.
  11. N

    Look for paper:Suspended substrate stripline filters for ESM

    Suspended substrate stripline filters for ESM applications Authors: Dean, J. E. Affiliation: AA(Filtronic Components, Ltd., Shipley, England) Publication: IEE Proceedings, Part F - Communications, Radar and Signal Processing (ISSN 0143-7070), vol. 132, pt. F, no. 4, July 1985, p. 257-266...
  12. N

    Req:Ommic design kit(ED02AH ),Thanks!!!

    ommic ed02ah Who can share ommic ED02AH design kits(2.6 or later) for ads?thanks!!!
  13. N

    double arrow 180 deg coupler?

    anyone here can give some advice on design a double arrow 180 deg coupler like krytar product?how to compensate the directivity?
  14. N

    suspended substrate stripline

    I need too,thanks
  15. N

    How to Use ADS to simulate op amplifier?

    How to Use @DS to simulate op amplifier? Dear jon2000, Good job! thank you very much! Needbias
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