microwave MOD Frequency & DIP Frequency

Discussion in 'Wireless & RF Design' started by vinodquilon, Jun 7, 2011.

  1. vinodquilon

    Thread Starter Member

    Dec 24, 2009
    234
    0
    I have setup one Microwave testbench as shown in figure.

    Modulation (MOD) frequency knob of Microwave source is been set at
    mid position. Now the Frequency Meter reads a DIP Frequency of 9.34 GHz.

    From Reflex Klystron MODE Study it is evident that- for all maximum
    output power points, the DIP value will be same irrespective of repeller voltage.

    SO,
    Can I change DIP Frequency by

    1. Changing MOD Frequency Knob position ?
    2. Replacing Klystron Supply with Gunn Supply ?
    What are the factors that decides DIP Vlaue ?
    What is the difference between MOD & DIP Frequencies ?







    [​IMG]
     
    Last edited by a moderator: Jun 7, 2011
  2. vinodquilon

    Thread Starter Member

    Dec 24, 2009
    234
    0
    In short , when DIP occurs
    MOD Frequency= DIP Frequency
    Is it correct ?
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,347
    Hello,

    You have found a schematic.
    Do you also have some text with that schematic parts?

    As for as I know the MOD is used to modulate the microwave signal to make the dip visible.
    Without modulation there will be no dip.

    Bertus
     
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