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CMOS RFIC Noise Canceling Method

CMOS RFIC Noise Canceling Method. 2009314086 An Yong- jun. Contents. Noise Cancelling in Wideband CMOS LNAs F. Bruccoleri , E.A.M. Klumperink , B. Nauta . In 2002, ISSCC. Paper Study Flow. Today. Noise Cancelling in Wideband CMOS LNAs

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CMOS RFIC Noise Canceling Method

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  1. CMOS RFICNoise Canceling Method 2009314086 An Yong-jun

  2. Contents Noise Cancelling in Wideband CMOS LNAs F. Bruccoleri, E.A.M. Klumperink, B. Nauta. In 2002, ISSCC

  3. Paper Study Flow Today Noise Cancelling in Wideband CMOS LNAs F. Bruccoleri, E.A.M. Klumperink, B. Nauta. In 2002, ISSCC Same Circuit

  4. Noise Cancelling in Wideband CMOS LNAs For input matching Zin = Rs NF>3dB NF always lager than 3dB Shunt Feedback Input noise current (ACL-1)times smaller than the others

  5. Noise Cancelling in Wideband CMOS LNAs Noise Canceling from MOSFET (Not source)  Determine ‘A’

  6. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling Same Opposite

  7. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling Overall Gain :

  8. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling Source Follower Vout = VYout+VXout VYout = VY VXout = VX * gm2/gm3 Noise cancelled which is generated by this FET

  9. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling Less than 1 EF : (noise)Excess Factor Higher gm2Rs Lower F

  10. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling Noise cancelled point!

  11. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling

  12. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling • Robustness

  13. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling • Distortion canceling Distortion comes from this FET Distortion canceled like Thermal noise

  14. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling • High Freq. Limit. Approximately CY=CL=0 CY and the load CL don’t affect the cancellation CL doesn’t affect the F of the LNA standalone Source Impedance looks like

  15. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling @ High Freq, Noise cancelling is degraded

  16. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling But f0 is higher, - high fT - Minimizing CIN - reduce Miller effect degrades frequency factor

  17. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling

  18. Wide-Band CMOS Low-Noise Amplifier Exploiting Thermal Noise Canceling • Conclusion • simultaneous cancellation of noise and distortion terms due to the matching device; • simultaneous noise and power matching for frequencies where the effect of parasitic capacitors can be neglected; • orthogonality of design parameters for input impedance and gain, allowing for an easier implementation of variable gain while maintaining input impedance matching; • robustness to variations in device parameters and the external source resistance ; • applicability in other IC technologies and amplifier topologies.

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