Hello guys
I'm a electrical engineer and i have a task to create a broadband amplifier: 0-550MHz for some measuring purpose. The amplifier should act as a front end amplifier with low noise figure.
However i have no experience with working with broadband electronic. I have worked some with narrow band amplifiers, but there seems to be one major obstacle with broadband:
In narrow band you can safely assume that the transistors S/Y'parameters remains constant over the frequency spectrum that you are operating in. But in broadband, you will often see a very large change. How do you work around this S/Y-parameter shift? Do you take the Y-parameters in the middle of the spectrum 300MHz for my case, and then create an amplifier with 300MHz bandwidth? Am i starting on the wrong foot?
Thank you for your replies!
Andreas Jørgensen
I'm a electrical engineer and i have a task to create a broadband amplifier: 0-550MHz for some measuring purpose. The amplifier should act as a front end amplifier with low noise figure.
However i have no experience with working with broadband electronic. I have worked some with narrow band amplifiers, but there seems to be one major obstacle with broadband:
In narrow band you can safely assume that the transistors S/Y'parameters remains constant over the frequency spectrum that you are operating in. But in broadband, you will often see a very large change. How do you work around this S/Y-parameter shift? Do you take the Y-parameters in the middle of the spectrum 300MHz for my case, and then create an amplifier with 300MHz bandwidth? Am i starting on the wrong foot?
Thank you for your replies!
Andreas Jørgensen