pYrana13
Junior Member level 1
Hi all,
What type of matching should I use for input matching network at transistor gate? The signal that drive the gate is a modulated square wave, which mean looking from spectrum is a few harmonic around 1 GHz frequency(between 0.925GHz-1.075GHz). If I match using stub technique, the reflection I got from S11 only effectively suppress 1GHz signal(-15dB suppression), whereas the sideband of 0.975GHz and 1.025GHz got only -5dB suppression which also lead to reflection problem.(see attachment)
How could I widen the reflection dip with good suppression? Any particular technique anyone?
Thank you!
What type of matching should I use for input matching network at transistor gate? The signal that drive the gate is a modulated square wave, which mean looking from spectrum is a few harmonic around 1 GHz frequency(between 0.925GHz-1.075GHz). If I match using stub technique, the reflection I got from S11 only effectively suppress 1GHz signal(-15dB suppression), whereas the sideband of 0.975GHz and 1.025GHz got only -5dB suppression which also lead to reflection problem.(see attachment)
How could I widen the reflection dip with good suppression? Any particular technique anyone?
Thank you!