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RF circuit design using ADS

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This presentation illustrates the experience gained by me during a RF circuit design course. The course requirements included designing, fabricating and simulating various couplers, an amplifier, a low noise amplifier and an oscillator. Operating frequency was centered around 2.4 GHz.

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  • DOWNLOAD FULL. BOOKS INTO AVAILABLE FORMAT ......................................................................................................................... ......................................................................................................................... 1.DOWNLOAD FULL. PDF EBOOK here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. EPUB Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. doc Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. PDF EBOOK here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. EPUB Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. doc Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... .............. Browse by Genre Available eBooks ......................................................................................................................... Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, Cookbooks, Crime, Ebooks, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult,
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  • DOWNLOAD FULL. BOOKS INTO AVAILABLE FORMAT ......................................................................................................................... ......................................................................................................................... 1.DOWNLOAD FULL. PDF EBOOK here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. EPUB Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. doc Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. PDF EBOOK here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. EPUB Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. doc Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... .............. Browse by Genre Available eBooks ......................................................................................................................... Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, Cookbooks, Crime, Ebooks, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult,
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  • hi thank you for your usful presentation, It contains a lot of information. so can i have your email, if possible because i want some advice. ayoub.malki88@gmail.com thank you
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RF circuit design using ADS

  1. 1. Final Presentation Ankit Master Spring 2009
  2. 2.  Couplers/Dividers  Branch Line Coupler  Wilkinson Coupler  Modified Wilkinson Coupler  Ratrace Coupler  Gain Block  Low Noise Amplifier  Oscillator
  3. 3. - Branchline couplers are 3 dB directional couplers - The power fed at the input port is divided equally between the two output ports. - However, there is a 90-degree phase difference in the output of the two ports
  4. 4. S- parameters Magnitude (dB) (@ 2.4 GHz) simulated measured S11 -30.03 -14.55 S12 -2.97 -2.97 S21 -2.97 -3.02 S22 -30.03 -15.16 S13 -3.05 -4.06 S31 -3.05 -4.15 Phase Difference between outputs obtained on ports 2 and 3: SIMULATED: 89.890 MEASURED: 91.000
  5. 5. S11 S12 S21 S22 Branch line Coupler: Magnitude plots
  6. 6. S13 Branch line Coupler: Magnitude plots S31 S12 – S13 Branch line Coupler: Phase plot
  7. 7. - It is a n-port network commonly used for combining and splitting power. - This circuit achieves isolation at the output ports while maintaining matched condition on all ports.
  8. 8. S- parameters Magnitude (dB) (@ 2.4 GHz) simulated measured S11 -20.01 -25.56 S12 -3.05 -3.10 S21 -3.05 -3.53 S22 -26.26 -11.08 S13 -3.05 -2.98 S31 -3.05 -3.33 Phase Difference between outputs obtained on ports 2 and 3: SIMULATED: 0.000 MEASURED: -1.480
  9. 9. S11 S12 S21 S22 Wilkinson Coupler: Magnitude plots
  10. 10. S13 Wilkinson Coupler: Magnitude plots S31 S12 – S13 Wilkinson Coupler: Phase plot
  11. 11. S- parameters Magnitude (dB) (@ 2.4 GHz) simulated measured S11 -38.28 -14.08 S12 -3.01 -3.36 S21 -3.01 -3.51 S22 -41.85 -12.21 S13 -3.01 -3.23 S31 -3.01 -3.33 Phase Difference between outputs obtained on ports 2 and 3: SIMULATED: 0.000 MEASURED: 0.8750
  12. 12. S11 S12 S21 S22 Modified Wilkinson Coupler: Magnitude plots
  13. 13. S13 Modified Wilkinson Coupler: Magnitude plots S31 S12 – S13 Modified Wilkinson Coupler: Phase plot
  14. 14. -This is a hybrid coupler - Like the Quadrature hybrid, the ratrace coupler is a 3-dB directional coupler -180-degree phase difference between output ports
  15. 15. S- parameters Magnitude (dB) (@ 2.4 GHz) simulated measured S11 -39.21 -12.19 S12 -3.00 -3.57 S21 -3.00 -3.64 S22 -39. 22 -13.11 S13 -39.58 -40.36 S31 -39.58 -40.45 S14 -3.01 -3.20 S41 -3.01 -3.34
  16. 16. S11 S12 S21 S22 Rat Race Coupler: Magnitude plots
  17. 17. S13 S31 S14 S41 Rat Race Coupler: Magnitude plots
  18. 18. S12-S13 S12-S14 Rat Race Coupler: Phase plot Phase Difference between outputs obtained at ports 2 and 3: SIMULATED: - 0.180 MEASURED: -36.380 Phase Difference between outputs obtained at ports 2 and 4: SIMULATED: - 178.800 MEASURED: - 172.810
  19. 19. -Active circuit which uses transistors to amplify the wea input signal -Device used: 2SEC5009
  20. 20. S- parameters Magnitude (dB) (@ 2.4 GHz) simulated measured S11 -18.999 -24.398 S21 6.354 3.893 S22 -19.00 -13.428 StabFact 1.004 -
  21. 21. -Low Noise amplifier is necessary at the input of a receiver to amplify the weak received signal with minimium amplification of noise -Device used: AT32011
  22. 22. Layout of the LNA in ADS Actual fabricated circuit
  23. 23. Noise Figure S-parameters
  24. 24. S- parameters Magnitude (dB) (@ 2.4 GHz) simulated measured S11 -10.475 -6.031 S12 -16.603 -17.940 S21 12.042 10.022 S22 -57.434 -54.278 StabFact 1.065 - NF min 1.961 - nf(2) 2.069 - Max Gain 12.762 -
  25. 25. -A local oscillator is used to combine the baseband signal with a high frequency RF signal during modulation - Device used: ATF33143
  26. 26. Layout in ADS Actual fabricated circuit (Apologies for the poor image quality)
  27. 27. Harmo simulated measured nic index HB.freq HB.vout HB.freq HB.vout (GHz) (dBm) (GHz) (dBm) 1 2.381 20.480 2.5975 10.02 2 4.761 -13.560 5.2075 -10.23 3 7.142 -3.331 7.7950 -21.43 S11 @ 4.751 - - - 2.35 dB GHz
  28. 28. - ADS is a very useful and powerful tool for building circuits - Reducing the number of parameters during optimization improves the chances of reaching the desired goal efficiently - Selection of a proper device is essential during the initial stages of the design to avoid complications in the latter stages of the project - Tuning is not as convenient as optimization

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