Antennas that transmit information emit radiofrequency radiation (which includes microwave radiation). Each antenna has a specific emission pattern. The typical emission patterns for panel and parabolic antennas are shown below.
Panel antennas utilise radiofrequency radiation. The zone of high field in the vicinity of panel antennas is highly directional, extending forwards from the front of the antenna, almost parallel to the ground. Where these antennas are mounted on high buildings or towers, radiofrequency fields at ground level and in regions normally accessible to the public are many times below hazard levels.
Parabolic antennas send or receive microwave radiation. Usually low power and you can interrupt the signal if you walk in front. The area where hazardous amounts of radiation exist is generally limited to within the radius of the dish.