RF Rectifier Design Using ADS

[@profhalimboutayeb]

Electromagnetic simulator: theory and step-by-step tutorial with MATLAB: kzbin.info/www/bejne/gJurmqeYlMyHo5o

[@parul426]

Sir can you please make a tutorial on wideband rectenna designin?

[@MfonobongUko-w5x]

Thanks for the video. How did you get the impedances used for the PCE simulation?

[@profhalimboutayeb]

@@MfonobongUko-w5x The circuit at the second step of the design should be tuned for rload, input power and input impedance associated with those values simultaneously to get the highest PCE.

[@upmasingh888]

thankyou so much sir for this video ......sir, I have designed the same circuit but my power conversion efficiency is zero at 1.8GHz i don't know why ?

[@profhalimboutayeb]

@@upmasingh888 thank you very much for your support. 1. Make sure that the load resistance and input power are correct(in dBm). 2. ⁠check your diode model to make sure that you have added all values mentioned in data sheet 3. In final equation the input power unit is in watt, make aure that you have used the correct equation. 4. ⁠also check the S11 by LSSP to see if you have a good impedance matching at the input. Thanks

[@mpavan1404]

Sir could you please tell how would you determined optimal load value and capacitance is they are assumptions or are they calculated

[@profhalimboutayeb]

@@mpavan1404 Load resistance along with the input power and input impedance(r and x in the schematic) should be tuned in a way that provide maximum PCE. You can see the effect of rload in your schematic by changing the value. For load capacitance you should get the the value based on the frequency in this design it has been chosen 100 pf to meet the output voltage ripple requirement.

[@mpavan1404]

@profhalimboutayeb sir u mean after verifying different values of load resistance u finally acheived better efficiency for 2700 ohms ??

[@mpavan1404]

And sir is ADS itself check for different values of load resistances or we should place a random value of load resistance and check whether it meets our desired criteria like better efficiency if not we assume other values for load resistance

[@profhalimboutayeb]

@@mpavan1404 Yes exactly, and you can see that it has a significant impact on efficiency.

[@mpavan1404]

@@profhalimboutayeb ok sir thank you

[@JTKhopefuls]

Hi sir , Can i reach out as I’m designing one of this for my msc project ? I need your help

[@profhalimboutayeb]

@@JTKhopefuls you can contact me at [e-mail]

[@lakshmiharish347]

how to take diode modeling for different frequencies For SMS7630 is it same for every rectifier

[@profhalimboutayeb]

Thank you for your comment. If you want to use different diodes you need to follow the same process, but the specification and parasitic elements are different. You can find them in the datasheet or other references. But for rectifier it is better to use the schottky diode.

[@lakshmiharish347]

@profhalimboutayeb thank u sir

[@lakshmiharish347]

thank you so much sir for this vedio .. but i did get exact values as urs. I got negative PCE values.

[@profhalimboutayeb]

@@lakshmiharish347 Hello, please contact me at [e-mail] if you have any issue with the design. Thank you very much for your comment.

[@profhalimboutayeb]

@@lakshmiharish347 thank you very much for your support. 1. Make sure that the load resistance and input power are correct(in dBm). 2. ⁠check your diode model to make sure that you have added all values mentioned in data sheet 3. In final equation the input power unit is in watt, make aure that you have used the correct equation. 4. ⁠also check the S11 by LSSP to see if you have a good impedance matching at the input. Thanks

[@JTKhopefuls]

hello Sir, how did you get (R=23) and (X=118)?

[@profhalimboutayeb]

It has been tuned along with the rload and input power to get the highest amount of PCE. These three parameter should be tuned simultaneously to get the highest PCE

[@JTKhopefuls]

@@profhalimboutayeb how did we tune this?,this process was not shown in the video?

[@profhalimboutayeb]

@@JTKhopefuls We can choose the mentioned parametres as variables and use the tuning or optimization tool to get the best results. Or you can try the simulation for the best tload and pin then use the tools to achieve the best input impedance values.

[@JTKhopefuls]

@@profhalimboutayeb I will try using tuning or optimisation tool ,please if you get time create a video on this I’m not very proficient at ADS usage ,I need to create a similar rectifier for 5.8GHz as I’m building RF harvester I sent an email to you by the name Jonathan Kabangu if you don’t mind replying :) Thank you sir

[@JTKhopefuls]

Furthermore is R=23 & X=118 the input impedance of the entire circuitry(voltage doubler,output filter and load resistor)? 2.why do we need to add this value to our port(Ptone) ?

[@profhalimboutayeb]

Yes exactly, it is for the entire circuit, we need to know this impedance to be able to design a matching circuit that converts this impedance to 50 ohm source. We need to put this value at the port impedance, because in this stage we do not have the matching circuit, otherwise we can not see the accurate value for PCE. It is done to mimic the conjugate match condition for the circuit.

[@JTKhopefuls]

@@profhalimboutayeb can you guide me step by step on how i can get to this value by optimisation?,i've been trying still no luck in your example you do not show how you got to this value and this is the most critical part of this circuit

[@JTKhopefuls]

@@profhalimboutayeb can i send you my circuit for revision please?

[@profhalimboutayeb]

@@JTKhopefuls Yes we can help you with that. Meghdad (PhD student) has already sent you an email . You can share what you have done with Meghdad and me through email, and we can talk about it.

[@profhalimboutayeb]

@JTKhopefuls yes

[@profhalimboutayeb]

High-Efficiency Patch Rectenna: kzbin.info/www/bejne/i2anoIelgqiYsMU

[@mohammedridaal-barznji6943]

I want your help how can I communicate with you please.

[@profhalimboutayeb]

Hi, this is my email address: [e-mail] Thank you