I was unable to understand a bunch of stuff related to amplifiers. Specifically my questions are as follows:
- What is load modulation? If i have a load of impedance of 10 ohms physically, then does load modulation change the impedance of this load? Does anyone have the theory behind load modulation to share?
- What is the difference between "active load modulation" and "active load pull"?. Furthermore what is the difference between active and passive load modulation?
- Doherty power amplifier: DPA uses a quarter wave transimission line. Does that mean DPAs are not suitable for low freqencies (less than 100kHz) since the transmission line length will be too long to integrate in chips? Also is it possible to avoid the transmission line?
I have not found any literature which has answered these questions, maybe i missed some. I would really appreciate some help from the experts.