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Recent content by VSWR

  1. V

    Design a RF System. ADS tutorials?

    Here is a good start: **broken link removed**
  2. V

    S-parameter measurements

    Have you checked for self oscillations using a spectrum analyzer?
  3. V

    Help needed to understand the spice model of a PIN-diode

    You can import and use SPICE files in ADS: YouTube - ‪Spice File Import in ADS.mp4‬‏
  4. V

    [ASK] Bandpass filter Frequency shift after layout and schematic co-simulation in ADS

    In the posting https://www.edaboard.com/threads/211699/, a coupled resonator filter was suggested instead. This design is more robust against inductor parasitics.
  5. V

    IM3 with imbalanced sideband

    What happens if you change the distance between f1 and f2? Will this change the level of 2f1-f2 and 2f2-f1?
  6. V

    bandpass filter design in ADS

    FR4 is a low cost, low precision substrate material intended for UHF frequencies. The large spread in tolerance of εr, thickness and tanδ gives an unreliable 5 GHz BP-filter design. Use a Duroid substrate or similar, intended for microwave filter design.
  7. V

    low noise amplifier design help

    The data sheet at **broken link removed** already proposes a bias of 3 V and 10 mA. How to design bias circuit for an RF amplifier is found here: **broken link removed** and amplifier design tutorial incl noise figure optimization: **broken link removed**
  8. V

    Please, please, please urgent help needed for 25GHz, filter

    Re: Please, please, urgent help needed for 25 GHz filter ...and the stop band attenuation? At 20 GHz? At 30 GHz?
  9. V

    Comparison of superhetrodyne rx, low if rx and direct conversion rx

    Re: receivers https://en.wikipedia.org/wiki/Superheterodyne_receiver https://en.wikipedia.org/wiki/Direct-conversion_receiver
  10. V

    how to conduct hall effect experiment?

    Re: hall effect. help! Using Google and searching for "hall effect" gives many answers. Here is one: https://en.wikipedia.org/wiki/Hall_effect
  11. V

    Why is the quadrature PA less sensitive to load mismatch?

    Re: Why is the quadrature PA less sensitive to load mismatch See **broken link removed**
  12. V

    input and output impedence matching of LNA

    See tutorial here: **broken link removed**
  13. V

    Amplifier Design Tutorial from RFIC.co.uk

    Re: LNA design See tutorial here: **broken link removed**
  14. V

    Help me design a NE3210S01 LNA using ADS

    Re: NE3210S01 LNA ADS See tutorial here: **broken link removed**
  15. V

    where low pass filters are used ?

    You can easily create this list yourself. Just use www.google.com and search for stepped impedance low pass filter
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