Category: Comms

RF PCB Design Struggle Sessions I

RF design is a black art for several main reasons: textbooks, Smith charts, CAD tools and components.   Academic texts on the topic are expensive, full of mathematical formalism and written by men with no practical experience...

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Communication Link Math

Legend has it that Stephen Hawking was warned that he would lose half his readers for every equation in “A Brief History of Time.”  His editor persuaded him to remove them.  Hawking removed all but E=MC2 because Einstein’s mass-energy relation was essential to the rest of the book.  In the same way, we cannot understand radio communications without the communication link equation (Friis’ formula).

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