Cascade Amplifier Chain
时间：03-30
整理：3721RD
点击：
Hi,
I am constructing an RF Chain. I have put 4 amplifiers in cascade. I have added a tone source. The P1dB and IP3 are fixed. So, I can vary only the gain(transducer gain). The cascaded gain, I am getting 50dB but noise figure is showing 166dB. Certain times, i also get the message, no noise power is available at input. Should I add anything between the tone source and amplifier block. I am using awr vss software. Also, Is there any relation between noise figure and loss(insertion loss) ?
Regards,
rf_engineer
I am constructing an RF Chain. I have put 4 amplifiers in cascade. I have added a tone source. The P1dB and IP3 are fixed. So, I can vary only the gain(transducer gain). The cascaded gain, I am getting 50dB but noise figure is showing 166dB. Certain times, i also get the message, no noise power is available at input. Should I add anything between the tone source and amplifier block. I am using awr vss software. Also, Is there any relation between noise figure and loss(insertion loss) ?
Regards,
rf_engineer