At our May 2012 club meeting, George Carlson, KC5RCC, demonstrated near field antenna patterns using his desktop demonstrator. The desktop demonstrator is a 3-GHz signal source and a simple receiver built into a standard chassis box. George also brought a collection of many popular antenna types scaled to 3 GHz.
For those who were unable to attend, we videotaped and published the presentation. The notes are also available here.