Satellite antenna switch matrix teardown

Ankaro SAT switcher 9×12 for antenna and satellite IF signals

What is inside

The construction looks like the input signals go to some kind of RF diode switch matrix. There are control ICs and output amplifier.



  1. Tomi Engdahl says:

    #82: How to use a Diode as a Switch / Diodes as Switches / Basics of Diode Switches

    This video answers a lot of questions about how diodes can be used to switch AC / RF signals.

  2. Tomi Engdahl says:

    #118: Basics of PIN diodes and their use in RF switch applications

    This is a basic tutorial on PIN Diodes, with some examples of how they are used in RF switch applications.

    discussing the unique characteristics of PIN diodes and how these characteristics are used for switching large RF signals. The unique ability to have the resistance of the diode be adjusted by changing the bias current can be used for other applications such as variable attenuators, modulators, phase shifters, etc.

    PIN diodes aren’t suitable in applications that require fast turn-off characteristics when reversed biased – such as rectifier, detector or mixer applications. PIN diodes do make excellent fast (relatively speaking) RF switches.


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