Electromagnetic Compatibility Society - 7:00PM, Wednesday, 5 March Frequency Domain Power Distribution Measurements Istvan Novak, Senior Staff Engineer, SUN Microsystems, Inc.
In today's advanced digital systems, the power-distribution networks often have to deliver hundreds of watts at low voltages, and the required low impedance of the power-distribution must be maintained over a wide frequency band. Traditional high-frequency measuring instrumentation has been tailored to handle impedances close to 50 ohms. The very low impedance values in the power-distribution networks create measurement and calibration challenges.This presentation explains the benefits of the frequency-domain method and impedance measurements with two-port VNA setups. Extraction of component parameters, calibration options for different instruments and frequency ranges, probe connections and constructions are explained. Various compensation methods are described, and examples are given to measure PDN components from single-elements to full working systems. The concept of attached impedance/inductance of bypass capacitors is introduced and we show data supporting the claim that for the high-frequency inductance of bypass capacitors the cover thickness of the part matters, the total height of the part does not. Istvan Novak is signal-integrity senior staff engineer at SUN Microsystems, Inc. Besides signal integrity design of high-speed serial and parallel buses, he is engaged in the design and characterization of power-distribution networks and packages for workgroup servers. He creates simulation models, and develops measurement techniques for power distribution. Istvan has twenty plus years of experience with high-speed digital, RF, and analog circuit and system design. He is Fellow of IEEE for his contributions to the signal-integrity and RF measurement and simulation methodologies. This meeting of the IEEE Central New England Chapter of the EMC Society will be held on Wednesday March 5, 2003 at EMC Corporation, 42 South Street, Hopkinton in the Corporate Auditorium Training Center Building.The technical presentation will commence at 7PM,and refreshments will be available at 6PM. Directions: From Rte. 495 North or South take exit 21b to South Street.At first traffic light make left turn (Note:This is on South direction side of Rte.495). EMC Corporation is at second driveway on right.For further information contact the meeting host Boris Shusterman at (508) 435-1000 ext 45020 or John Clarke at (508) 362-7195. If unavailable leave a message and calls will be returned as soon as possible.
