Electronic Military & Defense Annual Resource

6th Edition

Electronic Military & Defense magazine was developed for engineers, program managers, project managers, and those involved in the design and development of electronic and electro-optic systems for military, defense, and aerospace applications.

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Trends Electronic Military & Defense Annual Resource, 6th Edition 37 The aforementioned engineer's concerns proved valid, and he was tasked with creating alternative implementations, simulating and comparing the results to identify the best alternative. As the original design was implemented in a PF tool, the engineer was able to create derivatives and identify the best alternative given the constraints. A new solution was identified, and the original implementation team was used to relayout using the new design guidelines. A delay to manufacturing was shortened by using PF. A similar noise example is depicted in Figure 1. Following application of the PF process, Figure 2 depicts the end result, split into Case 1 and Case 2. Case 1 has dedicated return paths for each transmission line, while Case 2 (created from Case 1) has all return paths grouped together. Ultimately, Case 1 offers ~20dB noise improvement for both Near End (NEXT) and Far End (FEXT) over Case 2. More variables could have been added, such as metal topology, pitch of metals, various shielding alternatives, etc., to explore which alternative resulted in the best noise immunity. Insertion loss (IL) is not shown, but also should be analyzed. This SI/PI example focused on cross talk and RDL, but PF can be used for silicon, PCB, and complex 2.5/3D packaging to determine: • How uVIAs (or TSV/TGVs) can be arrayed and signal/ power assigned to each uVIA to minimize insertion loss (IL), as well as cross talk (NEXT and FEXT) • How material properties affect electrical performance (silicon or PCB) • How various 2.5D or 3D structures will perform with defined interconnect technologies (balls, pillars, wire bonds, etc.) • How to optimize power distribution networks (PDNs) to achieve target impedance and optimize a system's performance. 2 Differences Between Commercial And Military Designs Integrated device manufacturers that produce both commercial and military products, in an effort to avoid creating two different designs, simulate product use based on the more challenging military requirements. Reliability isn't an option – it's a requirement. T W T A M P L I F I E R S | M I C R O W A V E P O W E R M O D U L E S | P O W E R S U P P L I E S dB Control delivers. Our high-power solutions for radar, ECM and EW threat simulation systems save lives every day. Easy to maintain, custom configured and modularly designed, our TWTAs, MPMs and power supplies are so reliable that we're sole source on mission-critical ground-based, shipborne and high-altitude military manned and unmanned aircraft platforms with the U.S. Army, Navy, Air Force and major defense contractors worldwide. If your expectations are as high as your power requirements, contact us today. © 2016 dB Control Corp. All rights reserved. Photos provided courtesy U.S. Air Force, U.S. Army and U.S. Navy. +1 (510) 656-2325 marketing@dBControl.com www.dBControl.com

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