Agenda l l Overview of RF Design Process

Agenda l l 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

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

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

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

Concept: System-Level Design (Simple PCS-band transceiver front end) Power Amp Freq. = 1880 MHz +/- 50 MHz min. Pout (1 d. B) = +27 d. Bm min Psat = +30 d. Bm min Gain = 25 d. B 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 d. B min NF < 3 d. B The first part of the case study will focus on the LNA

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

Working Power Amplifier !!! Measured Simulated

CDMA Tests Channel Power and ACPR Simulation Pwr = 11. 2 d. Bm ACPR < -70 d. Bc Measured Pwr = 10. 8 d. Bm ACPR < -70 d. Bc

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

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