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Recent content by alucard

  1. A

    Passive filters VS Active filters

    Hi I'm actually quite new to RF filters but I'm curious about why most of us (my collegues) design system using passive filters rather than active filters. Is there a guide on active filters applications? Or transceivers performance are better then using passive filters? If i intend to use...
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    Varactor diode as freq multiplier application notes required

    Re: Varactor diode as freq multiplier application notes requ Yep i'm already reading zat.. was wondering if there is any agilent application notes on using varactor diodes:?: thanks ya:D
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    Varactor diode as freq multiplier application notes required

    Hi, I'm in midst of building a freq multiplier using varactor diode. Is there any application notes that can guide me through? or textbook? Thanks in advance :D
  4. A

    Bias Tee added before freq doubler

    narda bias tee Hi.. May i ask what is a bias tee circuit and how do i make use of it? How do i calculate the values? By placing a bias tee circuit before the doubler what does it help in my doubler Thanks alot.. please help
  5. A

    How to find out the loss of a cable with one end open?

    Re: S-parameter It is better to terminate the cable with a 50 ohm load, and get the S11 reading.
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    A primary Question about Antenna,pls come in~~~~

    It is for impedance matching and frequency resonance
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    S parameter of 2 series connecting 2port network

    Hi,I have a simple question how do i get the S parameter of the overall network of 2 , 2 port network connecting in series i refer to book using Γ but i do not really understand, is there any website where i can read abt it? Thanks in advance
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    Freq doubler simulation in ADS

    Hi :| i need advice for this freq doubler simulation, I'm new to ADS, and unsure if ADS models for the specific diode i'm using in the hardware and when i click on the diode model in ADS there is alot of parameters that i'm required to filled up yet this are not available in the datasheet of the...
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    RE: Selection of diode for Frequency doubler

    Hi thanks alot guy i'll read thru those books:D
  10. A

    RE: Selection of diode for Frequency doubler

    RE: Selection of diode for Frequency doubler Hi there :| I'm in the midst of selection of diode for a frequency doubler. May i ask what are the important parameter for selections and the different types of diode eg PIN, SRD and schottyl. Are PIN used only for switching and SRD for narrowband...
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    IV characteristic of PIN diodes??

    :D thx alot
  12. A

    IV characteristic of PIN diodes??

    Hi there, Thx for replying, is the biasing voltage written on the datasheet? And to get the IV characteristic should the circuit be as the image and i calculate Vd and Id to get the plot? Whereby value of resistor across don't matter??:|
  13. A

    IV characteristic of PIN diodes??

    Hi need help in this :cry: how do i get the IV characteristic of a zero bias PIN diode?:cry:
  14. A

    How to solder in hight frequency

    It would be better to use wire or ribbon bonding at high frequency:D
  15. A

    What is the Volterra series analysis?

    Volterra series analysis What is Volterra series analysis? and how is this helps in optimizing a frequency doubler? What does this means "Apply Volterra series analysis to your circuit to derive the closed loop transfer function" to a frequency doubler operating at 100MHz? Thanks :cry:
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