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FSLP Presentation: Fast Source- and Load-Pull using your VNA at its full power - Fast, Simple and Low-Cost

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FSLP Presentation: Fast Source- and Load-Pull using your VNA at its full power - Fast, Simple and Low-Cost

  1. 1. NM600 FSLP Source- and Load-Pull using your VNA at its full power- Fast, Simple and Low-Cost - November 2010
  2. 2. Outline ● Target Markets and Requirements ● Key Benefits of NM600 ● Problem description ● Fast Source- and Load-Pull Concepts ● Setup for NM600 ● NM600 FSLP Application ● Examples of Source- and Load-pull ● Customization of NM600 for power applications ● Conclusion© NMDG 2009 - 2010 2
  3. 3. Target Markets and Requirements ● Semiconductor Manufacturers ● Low cost and fast characterization ● Minimize the number of measurement setups ● VNA is typically already being used ● Handsets ● Cheap ● Small ● Talk forever without recharging ● Speech, data, movies, conferencing etc... NM600 ● Base-stations ● Needing to perform non-50 Ohm ● Low maintenance cost characterization ● More cells ● Owning a vector network analyzer ● Smaller units ● Not willing to invest in tuners© NMDG 2009 - 2010 3
  4. 4. NM600: Key Benefits ● Fast ● Electronic tuning ➢ ~0.6s/point in Fast Mode (no control loop of independent variables) ➢ ~1.4s/point in Control Loop Mode ● Simple and Accurate ● Standard network analyser connection to device under test (*) ● Only VNA relative and power calibrations required ● Low-cost ● No tuner required (passive techniques) ● No expensive external sources required (active techniques) ● Direct feedback ● Source and load impedances ● Fundamental power and phase spectrum of input and output waves ● Derived quantities such as input and output delivered power, PAE(*) Circulator advised for source protection© NMDG 2009 - 2010 4
  5. 5. The Amplifier as essential Power Transformer Amplify LDMOS GaN GaAs OK SiGe... Information Signal Do not distort© NMDG 2009 - 2010 5
  6. 6. The Amplifier as essential Power Transformer Convert DC Power LDMOS into RF Power GaN GaAs DC Power SiGe... RF Power Information Signal Avoid Power Dissipation© NMDG 2009 - 2010 6
  7. 7. Classic Technique: Fundamental Source and Loadpull f0 PIn DUT f0 POut Bias P source f0 ● Measure ● Input and output DC and RF power ● For different values of ● Input power ● Bias ● Load impedances ● Source impedances ● Display and analyse collected data ● Until “some optimal” point is reached© NMDG 2009 - 2010 7
  8. 8. What now? ● S-parameters ● Small-signal characterisation ● Only when no distortion ● 50 Ohm environment ● Matching requires non-50 Ohm ● Harmonic and Intermod distortion ● Only in 50 Ohm environment© NMDG 2009 - 2010 8
  9. 9. Concept of Fast Source-Pull To VNA VDD VGG To VNA Port 2 Port 1 id Power Sweep ig Pin b2 a1 a2 ZL Source b1 vd f0 vg 1 Measure ∀ Pin vg, ig, vd, id at DC a1, b1, a2, b2 at f0 Calculate mathematically ∀ PAV and Zsource Pdelin, Pdelout, PAE, ... at f0 Source Pull Contours© NMDG 2009 - 2010 9
  10. 10. Concept of Fast Load-Pull ΓL Active Injection To VNA VDD VGG To VNA Port 2 Port 1 id igFixed Pin b2 a1 a2 b1 vd Optional f0Source f0 vg Prematch Pinject 1 Tuner Φinject Source 2 Adapting Pinject and Φinject for given Pin Synthesize ΓL Measure vg, ig, vd, id at DC a1, b1, a2, b2 at f0 Calculate Pdelin, Pdelout, PAE, ... at f0 Load Pull Contours© NMDG 2009 - 2010 10
  11. 11. NM600 2/4-port VNA + Hardware (opt.) + Software ● direct gen. & rec. access ● Circulator NM600 ● Second internal source ● Amplifier ● Manual tuner FSLP© NMDG 2009 - 2010 11
  12. 12. NM600 Block Diagram on R&S ZVA24 4-port R&S ZVA24 SRC SRC #1 Port 1 Port 2 Port 4 #2 Receiver a1 b1 b2 a2 20 dB Possible DUT Possible Signal Signal Conditioning ConditioningTest-Set Limitations: 27 dBm© NMDG 2009 - 2010 12
  13. 13. NM600 Setup with ZVA and ZVAX© NMDG 2009 - 2010 13
  14. 14. NM600 Block Diagram on R&S ZVA24 4-port R&S ZVA24 SRC SRC #1 Port 1 Port 2 Port 4 #2 14 dB Receiver a1 b1 b2 a2 -22 dBm -3 dBm 12.5 dB 35 dB 20 dB 26 dB 10 dB 20 dB DUT Possible Signal ZVAX Conditioning 43 dBm 43 dBm PossibleTest-Set Limitations: 43 dBm Signal ConditioningCustomized Test-sets are possible© NMDG 2009 - 2010 14
  15. 15. NM600 FSLP Application Multi-tab Displays Source- or Load Pull Mode Selection of independent variables Display Configuration ● Style ➢ Points ➢ Contours ➢ Contours + Points Off-line ● Derived Quantity: Display ➢ Selection of Qty & Unit ➢ Multiple quantities at once Selection of Datasets ● Multiple datasets at once ➢ Union of indep. variables Data Collection© NMDG 2009 - 2010 15
  16. 16. NM600 FSLP Application – Data Collection Log of messages Verbose, Warning & Errors Live Status Monitor Desired & realized sweep points Sweep Start / Pause / Stop Sweep Plan Configuration Progress Bar Tune independent fixed variables Change value & start automatically a new sweep© NMDG 2009 - 2010 16
  17. 17. NM600 FSLP Application – Sweep Plan ΓLoad Sweep Sweepable Configuration VariablesSweep Plan Sequence● Sweep Order● Turn On/Off Sequences Advanced Settings ● Sweep Mode ● Control Loop Settings© NMDG 2009 - 2010 17
  18. 18. NM600 FSLP Application – Source Pull Display For a given Pav @ Selected For given Γs sets f0, ΓL, vDC1, vDC2 Calculate mathematically Display Source Pull Contours ● # Contour levels ● Min (▼) & Max (▲) ● Colour Scale to map values© NMDG 2009 - 2010 18
  19. 19. NM600 FSLP Application – Load Pull Display @ Selected Pin, f0, ΓL, vDC1, vDC2 Calculate mathematically Display Load Pull Contours ● # Contour levels ● Min (▼) & Max (▲) ● One colour per derived qty© NMDG 2009 - 2010 19
  20. 20. Example: EPA120B-100P ● EPA120B-100P ● high efficiency heterojunction power FET ● power output: + 29.0dBm typ. ● power gain: 11.5dB typ. @ 12 GHz© NMDG 2009 - 2010 20
  21. 21. Source-Pull LoadMeasure for power sweep Pin = -20 to -5 dBm, F0 = 1.5GHz Vg = -1.2V, Vd = 5V Calculated for Pav = -12 dBm Class AB Pdelin Pdelout PAE Min = -23.2 dBm Min = -4.6 dBm Min = 0.8 % Max = -12.2 dBm Max = 6.6 dBm Max = 6.4 % Δ = 1 dB Δ = 1 dB Δ = 0.4 %© NMDG 2009 - 2010 21
  22. 22. Load-PullPin = -10 dBm, F0 = 1.5GHz Vg = -1.2V, Vd = 5V Class AB Pdelout Min = -5.5 dBm Max = 4.1 dBm Δ = 1 dB PAE Min = 0.4 % Max = 5 % Δ = 0.23 % Synthesized load impedances with active injection© NMDG 2009 - 2010 22
  23. 23. A Technical Note: Power Requirements for Active Injection Active Amplifier Tuner E Amp E TunerTuner E Amp  Amp  Tuner  Load = E Amp Amp E Tuner E Tuner E Tuner  Load −Tuner  Load ∣ ∣∣ E Amp = 1− Amp  Load ∣ If perfect circulator:  Tuner =0 E Tuner  Load = E Amp Amp E Tuner  Load =1 E Tuner 1 E Tuner  Load ∣ ∣∣ E Amp = 1− Amp  Load ∣ ∣ ∣∣ E Amp = 1− Amp ∣© NMDG 2009 - 2010 23
  24. 24. Getting more insight... Dynamic Load line including Harmonics with the NM300 ZVxPlus© NMDG 2009 - 2010 24
  25. 25. Conclusion The NM600 FSLP Application enables fundamental Source and Load Pull using only a VNA It is fast, simple, low-cost and accurate For more information info@nmdg.be www.nmdg.be© NMDG 2009 - 2010 25
  26. 26. Want to try? Contact us at icesupport@nmdg.be© NMDG 2009 - 2010 26

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