What practical adjustment can improve floor coverage when a high-gain indoor omnidirectional antenna is mounted on a very high ceiling?

What practical adjustment can improve floor coverage when a high-gain indoor omnidirectional antenna is mounted on a very high ceiling?

• A. Lower the mounting height or tilt the antenna downward.
• B. Increase the transmit power to the maximum.
• C. Move all clients toward the corner of the room.
• D. Switch to a passive antenna.

Answer: (A)

When you mount a high-gain indoor omnidirectional antenna on a very tall ceiling, most of the vertical energy goes toward the ceiling, and the signal reaching the people on the floor can be weak. Lowering the mounting height or tilting the antenna downward reorients the vertical radiation pattern so more energy is directed toward the floor area where clients are. This reduces the distance the signal must travel to typical floor-level devices, lowers path loss, and yields stronger, more uniform coverage. Pushing more transmit power might seem helpful, but it can cause more interference and regulatory issues without solving the downward-reaching radiation problem. Moving clients around or switching to a passive antenna won’t address the underlying pattern directing energy away from the floor.