How to design the circuit for power Amplifier after selecting the transistor

Discussion in 'Digital Circuit Design' started by abinash subash, Jan 26, 2018.

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  1. abinash subash

    Thread Starter New Member

    Jan 26, 2018
    I have chosen the transistor and selected the ADS software to design a power Amplifier. I need design a high power Amplifier of about 100W. Any suggestions and help to design the complete circuit of amplifier.
  2. AlbertHall

    AAC Fanatic!

    Jun 4, 2014
    How did you select a transistor without a circuit design?
    Sounds like homework to me.
  3. WBahn


    Mar 31, 2012
    What is the actual assignment?

    How can anyone help you design an amplifier if all that is known is that it needs to be about 100 W?

    What is the basis by which you selected this transistor?

    How can anyone help you design a circuit around a specific transistor when you haven't told them what that transistor is?

    How does the selection of the ADS software impact the design of the amplifier?
    Alec_t likes this.
  4. MrChips


    Oct 2, 2009
    You are missing some critical pieces of information.
    What is the frequency or bandwidth of operation?
    What is the impedance of the load?

    What are you driving, a loudspeaker, DC motor, heater, shaker table, ultrasonic transducer, laser diode, thermoelectric pile, RF antenna, etc., etc.?
  5. AnalogKid

    AAC Fanatic!

    Aug 1, 2013
    A 100 W Ku band satellite transponder is difficult.

    EDIT: Actually, that was a good guess. On another forum it is an RF transistor, rated for 125 W and 3 GHz.

    Last edited: Jan 26, 2018
  6. abinash subash

    Thread Starter New Member

    Jan 26, 2018
    I have attached the datasheet of the transistor. Iam designing it for jammer. I planning for a wide band amplifier

    Frequency from 20khz to 3GHZ
    Iam using it for antenna to build a jammer
    Impedance of load is 50Ohm

    Which forum
    Last edited by a moderator: Jan 26, 2018
  7. ScottWang


    Aug 23, 2012
    This thread was violated with the TOS/UA and it will be closed.

    6. Restricted topics. The following topics are regularly raised however are considered "off-topic" at all times and will result in Your thread being closed without question:

    • Any kind of over-unity devices and systems
    • Devices designed to electrocute or shock another person
    • LEDs to mains
    • Any kind of jammers (ie - Phone jammers)
    • Rail guns and high-energy projectile devices
    • Transformer-less power supplies
    If You come across a thread or post discussing any of the above topics please report the thread so We can close, and if necessary remove, the offending thread/posts.
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