Pi-Matching Network Simulation in LTSPICE

Discussion in 'Electronic Projects' started by ssgill2, Feb 14, 2017.

  1. ssgill2

    ssgill2

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    Hello All,

    I am currently working on a simple project which involves designing a pi-matching circuit for a source resistance of 50 ohms and load resistance of 800 ohms. The frequency of operation (center frequency) given to me is 800 MHz and bandwidth specification given to me is 25 MHz. From this information, I calculated my required Q factor and designed my pi-matching networks. I have used the block DC format.

    Using the .net and .ac commands, I simulated my S11 parameter to ensure it is less than -10 dB as that means good matching. The question is how do I interpret the S11 simulation? It just lines going up and down to me. In the attached file, I included the S11 plot and my schematic. My S11 is in the mdB range so I assume I have designed a good matching circuit?

    Thanks for reading
    Simardeep Gill
     

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    ssgill2, Feb 14, 2017
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