Abstract
A microwave transistor amplifier in the conjugately characteristic impedance transmission line (CCITL) system is designed and implemented using terminated finite lossless reciprocal periodic structures consisting of multiple 2-section microstrip reciprocal lossless transmission lines (TLs). The 2-section TL unit cell is designed at Φ = 15°, the argument of Z <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−</sup> which is the characteristic impedance of the backward wave associated with CCITLs. The frequencies where simulated and measured |S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">21</inf> | peaks are found, are slightly below the designed operating frequency of 2.4 GHz. The measured |S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">21</inf> | profile is similar to that obtained from the simulation; however, the overall value is lower due to associated losses in supplementary components.
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