A single-antenna method for traceable antenna gain measurement

A simple method is introduced to measure the gain factor of a single preferably directional linearily polarized antenna in whatever distance. It requires only equipment for usual insertion loss measurement and the antenna itself in front of a totally reflecting surface simulating a second identical antenna as the image of the antenna to be calibrated. This speeds up such measurements considerably and, therefore, is very cost efficient. Its results can easily be made traceable to national standards.