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Agenda

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  1. Agenda • Overview of RF Design Process • Case study: RF Front-end • Low-noise amplifier (LNA) • Duplexer • Power amplifier • Measurement for Design • Passive Device Characterization • Active Device Modeling • Summary

  2. Physical Design Integrate Redesign Build Test NO Does it work? Production The Traditional Non-Predictive Design Process Concept Design Integrate Production

  3. Design Integrate Software Simulate Redesign Does it work? NO Manufacturable ? NO Build Test NO Does it work? Physical Production The Predictive RF Design Process Concept • Adjust the design on the work station not on the bench! Design Integrate Production

  4. HP Advanced Design System Total integration of schematic, simulation, and layout

  5. Concept: System-Level Design(Simple PCS-band transceiver front end) Power Amp Freq. = 1880 MHz +/- 50 MHz min. Pout (1 dB) = +27 dBm min Psat = +30 dBm min Gain = 25 dB min 1.9 GHz Duplexer Freq. lower band = 1880 MHz +/- 30 MHz Freq. upper band = 1960 MHz +/- 30 MHz LNA Freq. = 1960 MHz +/- 50 MHz min. Gain = 25 dB min NF < 3 dB The first part of the case study will focus on the LNA

  6. This one’s good! But...What about Yield? Volume Performance Variation Individual Performance Optimized Performance (Gain, dB) Performance (Gain, dB) Tolerance Range Tolerance Range Design Spec Component Value (Cload, pF) Component Value (Cload, pF)

  7. Working Power Amplifier !!! Measured Simulated

  8. CDMA Tests Channel Power and ACPR Simulation Measured Pwr = 11.2 dBm Pwr = 10.8 dBm ACPR < -70 dBc ACPR < -70 dBc

  9. Typical PCB Fixture (with Cal Standards) Short standard Load standard Contact to DUT Open standard Launches / Transitions Thru standard Coaxial connectors

  10. Thank You for Attending - HP RF Design and Measurement Seminar Authors: David Ballo Joe Civello Ed Henicle Sara Meszaros Andy Potter Boyd Shaw My Le Truong