PA output impedance matching
时间:04-06
整理:3721RD
点击:
Hi
The output impedance of my PA is around 52ohms. I was told that by shifting the points slightly to different quarter in the smith chart, I can select the optimized gain and current for my application by comparing performance of different points. What is meant by shifting the points slightly to different quarter in the smith chart? How can I do that?
The output impedance of my PA is around 52ohms. I was told that by shifting the points slightly to different quarter in the smith chart, I can select the optimized gain and current for my application by comparing performance of different points. What is meant by shifting the points slightly to different quarter in the smith chart? How can I do that?
Power Amplifiers should be loaded with "Optimum Load Impedance" which will give you either Maximum Output Power or Maximum Efficieny.You can choose a optimum point between these two and you may find a compromise between Output Power and Power Effciency.Gain is also impacted but not so much.
Optimum Load Impedace for an power amplifier is "generally" pretty different than complex conjugate of output impedance of the power amplifier itself..
It might be meant that..
- Output Impedance Of a Triple cascode
- How to make image impedance equal
- Input and output impedance matching in Distributed amplifier
- Characteristic impedance of combination of CPWG and stripline on inner layers
- Problem of impedance matching of Gilbert cell mixer
- Input impedance of transmission lines connected in cascade
