In a reflector–director antenna arrangement, where is the reflector located relative to the driven element?

In a reflector–director antenna arrangement, where is the reflector located relative to the driven element?

• A. Behind the antenna
• B. In front of the antenna
• C. To the side of the antenna
• D. Not used in this arrangement

Answer: (A)

In a reflector–director setup, the reflector sits behind the driven element, on the side opposite the desired direction of the main beam. The driven element feeds power to the antenna, while the passive reflector (typically a bit longer than the driven element) reflects energy back toward the front. This reflection, combined with the forward-directed energy from the directors ahead of the driven element, shapes the radiation pattern to produce stronger forward gain. Placing the reflector in front would disrupt this constructive forward radiation rather than enhance it.

In a reflector–director setup, the reflector sits behind the driven element, on the side opposite the desired direction of the main beam. The driven element feeds power to the antenna, while the passive reflector (typically a bit longer than the driven element) reflects energy back toward the front. This reflection, combined with the forward-directed energy from the directors ahead of the driven element, shapes the radiation pattern to produce stronger forward gain. Placing the reflector in front would disrupt this constructive forward radiation rather than enhance it.