One day at my office we received an e-mail that asked the following question: "What is the primary use of a ground plane and when should it be used?" One of my smart-aleck partners looked up and said, "A ground plane is where the airplane lands." Another said, "A ground plane is used if there isn't enough room for an air plane." But then we realized that there was a time in our careers when we might have asked a question like this. And, as we thought about it, many people may not recognize ALL the kinds of benefits a ground plane offers.