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Power Supply and Ground Design for a WiFi Transceiver

Authored on: Nov 9, 2005

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A solid RF layout begins with understanding the fundamentals of board stack-up, supply routing, and grounding. This discussion addresses these fundamentals, and offers some practical, design-proven guidelines on power supply routing, supply bypassing, and grounding techniques to maximize the performance of any RF design. A practical example of controlling PLL spur levels is discussed, as PLL spurs are particularly sensitive to supply decoupling, grounding, and filter component placement. The MAX2827 802.11a/g transceiver reference design PCB layout is used for illustration.

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