If possible do different techniques of simulation for LNA using Cadence also simulation for learning power consumption could be more helpful keep it up brother waiting for more Low Noise Amplifier videos for wide band frequencies like 5GHz, 6GHz
@@Hostile92YT yeah. Will try to different methods of simulation. The simulation procedure is same for UWB or at any frequency. With regards to power consumption, it's VDD x DC current (if you have differential LNA). If it's single ended, you will get ac power consumption also. In differential, ac power cancels out.
@@bhanuprakashveldandi893 Brother please explain the Transistor parameters (width, length, fingers) you have used in this video for me using a 90nm nmos transistor I couldn't achieve better results, infact the results are disastrous the gain is going negative and Noise figure is going into hundreds of dB when I am using the nmos transistor from gpdk090. Please help me with this issue brother
Its not only dependent on the transistor parameters. Its dependent on the matching network. If your S11 is bad, your S21 is automatically bad. If your load is not at resosnance, you will get bad gain and NF. Try doing a common source LNA, where there is Inductor at the source and gate of the mosfet. Use a cascode stage, if required and Check if your load is resonating at required freq. of operation.
Thank you very much for the detailed video! I am still a little confused on how to measure the gate capacitance of the mixer. Since you mentioned we need this to get rid of loading effect at the LNA output. Please kindly elaborate, thanks
Thanks sir, I have one doubt I also made differenttial lna but my output signals are in same phase, I checked it many times what could be possible reasons also for some frequency range s21 is negative
Good morning sir, thank you for this tutorial. I am trying to design an inductorless differential LNA. So far, I have only done the core amplification and haven't done the matching circuit yet. I initially made a single ended LNA and simulated it and got positive s21. When I replicated it and made it into differential LNA, the s21 became negative. I have tried doing the vcvs method and somehow the s21 became consistent at ~-6kdB. Is the mistake on the testbench part or more on the design?
Something wrong with the setup / test bench. You can debug using an AC input and see whether you are getting some gain or not. If you are getting -6kdB S21 that means there is no signal flow. There is no connection between input and output. cadence instead of showing negative infinity, it shows -6kdB kind of values. Also check whether you are giving input properly or not.
Hello sir Im trying the same LNA circuit for my understanding If you could please tell me every value of the elements in the circuit. Can you please send me screenshot of the design with elements values .. That'll be really helpful for me. Thank you 😊
Hello sir Im trying the same LNA circuit for my understanding If you could please tell me every value of the elements in the circuit. Can you please send me screenshot of the design with elements values .. That'll be really helpfull
Hi, I can do that. But understand that W and L change with the process technology and model files. So my design component values may not help you at all.
Power dissipation is nothing but total voltage across the circuit x total current drawn or pumped into the circuit. So it's just VDD x Idc. Where Idc is the DC current drawn and VDD, 0 are the power supplies.
Hi Bhanu... It would be very helpful if you could make the same detailed video for the PA and I appreciate your good work.
keep up the good work
Hi banu, if it's possible can you put LNA calculation
Awesone brother this was really helpful a whole hearted thanks from my side. Hope you will get a better reach in future for your hard work
Thanks man.
If possible do different techniques of simulation for LNA using Cadence also simulation for learning power consumption could be more helpful keep it up brother waiting for more Low Noise Amplifier videos for wide band frequencies like 5GHz, 6GHz
@@Hostile92YT yeah. Will try to different methods of simulation. The simulation procedure is same for UWB or at any frequency. With regards to power consumption, it's VDD x DC current (if you have differential LNA). If it's single ended, you will get ac power consumption also. In differential, ac power cancels out.
@@bhanuprakashveldandi893 Brother please explain the Transistor parameters (width, length, fingers) you have used in this video for me using a 90nm nmos transistor I couldn't achieve better results, infact the results are disastrous the gain is going negative and Noise figure is going into hundreds of dB when I am using the nmos transistor from gpdk090. Please help me with this issue brother
Its not only dependent on the transistor parameters. Its dependent on the matching network. If your S11 is bad, your S21 is automatically bad. If your load is not at resosnance, you will get bad gain and NF. Try doing a common source LNA, where there is Inductor at the source and gate of the mosfet. Use a cascode stage, if required and Check if your load is resonating at required freq. of operation.
Thank you very much for the detailed video! I am still a little confused on how to measure the gate capacitance of the mixer. Since you mentioned we need this to get rid of loading effect at the LNA output. Please kindly elaborate, thanks
Put port. Use SP analysis and see looking in impedance and back calculate the capacitance from the imaginary part of impedance.
Thanks sir, I have one doubt I also made differenttial lna but my output signals are in same phase, I checked it many times what could be possible reasons also for some frequency range s21 is negative
Check the inputs of your LNA. Inputs have to be differential.
Good morning sir, thank you for this tutorial.
I am trying to design an inductorless differential LNA. So far, I have only done the core amplification and haven't done the matching circuit yet.
I initially made a single ended LNA and simulated it and got positive s21. When I replicated it and made it into differential LNA, the s21 became negative. I have tried doing the vcvs method and somehow the s21 became consistent at ~-6kdB. Is the mistake on the testbench part or more on the design?
Something wrong with the setup / test bench. You can debug using an AC input and see whether you are getting some gain or not. If you are getting -6kdB S21 that means there is no signal flow. There is no connection between input and output. cadence instead of showing negative infinity, it shows -6kdB kind of values. Also check whether you are giving input properly or not.
Hello sir
Im trying the same LNA circuit for my understanding
If you could please tell me every value of the elements in the circuit. Can you please send me screenshot of the design with elements values ..
That'll be really helpful for me.
Thank you 😊
My component values may not help you if the technology file (model file) is different.
sir can you explain the design of the struture to obtain the component values
sorry for the delayed response, but I would drop a video soon. I have taken a long break from youtube. I will be back at it.
Hello sir
Im trying the same LNA circuit for my understanding
If you could please tell me every value of the elements in the circuit. Can you please send me screenshot of the design with elements values ..
That'll be really helpfull
Hi, I can do that. But understand that W and L change with the process technology and model files. So my design component values may not help you at all.
@@bhanuprakashveldandi893 ok bro tnq
How to calculate power dissipation for this circuit
Power dissipation is nothing but total voltage across the circuit x total current drawn or pumped into the circuit. So it's just VDD x Idc. Where Idc is the DC current drawn and VDD, 0 are the power supplies.