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A 1.2V Low-Power 2.4GHz 0.18 m CMOS Quadrature VCO X. Redondo, J. - PowerPoint PPT Presentation

Nov 07, 2023 •102 likes •355 views

DCIS08: A 1.2V Low-Power 2.4GHz QVCO 1/ 26 A 1.2V Low-Power 2.4GHz 0.18 m CMOS Quadrature VCO X. Redondo, J. Pallars, F. Vila , L. Ters and F. Serra-Graells System Integration Department Institut de Microelectrnica de Barcelona

  1. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO 1/ 26 A 1.2V Low-Power 2.4GHz 0.18 μ m CMOS Quadrature VCO X. Redondo, J. Pallarés, F. Vila , L. Terés and F. Serra-Graells System Integration Department Institut de Microelectrònica de Barcelona Centre Nacional de Microelectrònica - CSIC Spain November 2008 F . Vila et al. Centro Nacional de Microelectrónica

  2. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 2/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  3. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 3/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  4. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 4/ 26 Scenario � Very Low-Power Superheterodyne TX/RX � PLL with Sigma-Delta Modulation � QVCO specs: � Frequency BandWidth: 2.40-2.48GHz � Phase noise at 1Mhz: -72dBc/Hz � Phase noise at 2Mhz: -95dBc/Hz � Phase noise at 3Mhz: -105dBc/Hz � Quadrature 90º � Low-Gain < 30MHz/V � Very Low-Power < 1mW at 1.2V Power Supply � Technology: 0.18 μ m 1poly 6 metal 1.8V F . Vila et al. Centro Nacional de Microelectrónica

  5. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 5/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  6. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 6/ 26 � Relaxation Oscillator � Ring Oscillator � LC Oscillator Avantatges: Low phase noise One transistor Oscillators High frequency resonators High spectral purity Drawbacks: Low Q factor F . Vila et al. Centro Nacional de Microelectrónica

  7. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 7/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  8. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 8/ 26 Active quadrature � Simulation Results Output Voltage = 550 mVpp Stabilization Time = 90 ns Quadrature Error = 0.2º Phase noise (3MHz) = -120dBc/Hz Harmonic difference = 50 dB Mismatch immunity ↑ F . Vila et al. Centro Nacional de Microelectrónica

  9. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 9/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  10. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 10/ 26 � Double current source � Polarization control using reference follower � Simulation Results � Modified follower F . Vila et al. Centro Nacional de Microelectrónica

  11. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 11/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  12. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 12/ 26 � Switch plus Transistor � Transistor’s operation region � MIM plus Switch CMIM ↑↑ F . Vila et al. Centro Nacional de Microelectrónica

  13. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 13/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  14. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 14/ 26 Full-Custom Layout Design � Reference QVCO � QVCO2 No-bias control � QVCO3 Varactor � QVCO4 N-Well Inductor � QVCO5 Optimized Layout � QVCO6 Standard Cells F . Vila et al. Centro Nacional de Microelectrónica

  15. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 15/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  16. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 16/ 26 Test bench F . Vila et al. Centro Nacional de Microelectrónica

  17. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 17/ 26 Reference QVCO Results Jitter ~ 2ps � Power: 700 μ A at 1.2V; Freq.: 2.45GHz I/Q Error < 1º PN 3MHz -131 dBc/Hz KVCO 20 MHz/V F . Vila et al. Centro Nacional de Microelectrónica

  18. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 18/ 26 Output Power � Test bench attenuation: 5.5 dB; Buffers gain : -18 dB. Output Voltage = 500 mVpp F . Vila et al. Centro Nacional de Microelectrónica

  19. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 19/ 26 Comparison with different versions � Phase noise in QVCO2. � Phase noise in QVCO4. PN 3MHz PN 3MHz -131 dBc/Hz -126 dBc/Hz � Quadrature Error in QVCO5. � Coarse Gain in QVCO3. I/Q Error < 1º KVCO 200 MHz/V F . Vila et al. Centro Nacional de Microelectrónica

  20. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 20/ 26 Parametric results � Phase noise vs Current. � Phase noise vs Frequency. � Quadrature Error vs Frequency. � Quadrature Error vs Current. F . Vila et al. Centro Nacional de Microelectrónica

  21. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 21/ 26 State of art comparison � Figure of Merit: Referència V DD [V] I DD [mA] P D [mW] F osc [GHz] Δ f [MHz] L( Δ f) [dBc/Hz] FOM [-] This work 1.20 0.70 0.84 2.50 3.00 -131.68 190.85 1.00 5.00 5.00 6.00 1.00 -120.3 188.87 1.30 16.00 20.80 2.27 3.00 -140.00 184.40 1.80 3.20 5.76 5.50 1.00 -115.00 182.20 2.00 15.00 30.00 1.57 0.60 -133.50 187.08 2.50 8.00 20.00 1.85 3.00 -143.00 185.79 1.25 1.74 2.18 2.01 1.00 -124.00 186.69 1.20 4.40 5.28 6.00 1.00 -117.00 185.34 1.80 9.70 17.46 5.00 1.00 -125.60 187.16 2.50 8.75 21.88 5.20 1.00 -124.00 184.92 0.70 7.40 5.18 2.40 1.00 -124.90 185.36 1.80 6.00 10.80 2.60 0.10 -105.00 182.97 1.80 1.60 2.88 2.40 3.00 -131.50 184.97 1.20 12.25 14.70 2.45 1.00 -120.00 176.11 F . Vila et al. Centro Nacional de Microelectrónica

  22. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 22/ 26 1 Introduction 2 VCO Topology 3 Quadrature Generation 4 Bias Control 5 Capacitive Bench 6 Physical Design 7 Experimental Results 8 Conclusions F . Vila et al. Centro Nacional de Microelectrónica

  23. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO Intro VCO Quad. Biasing Capac. Bench Layout Res. Con. 23/ 26 Conclusions � Great results on phase noise . � Remarkable results in FOM � Low-current and Low-Power Supply . � Varactor vs capacitors bench. � Importance of mismatch in quadrature generation. � Amplitude noise appears in very-low amplitude output. � Effective bias control improvement. F . Vila et al. Centro Nacional de Microelectrónica

  24. DCIS’08: A 1.2V Low-Power 2.4GHz QVCO 24/ 26 Thank you for your attention!!! F . Vila et al. Centro Nacional de Microelectrónica

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