An example antenna monitoring device according to the disclosed principles is provided with an intermodulation distortion mitigation component. An example intermodulation distortion mitigation component may include a backplate for the antenna monitoring device. The back plate may be made of a substance such as aluminum and may be relatively thin (e.g., in the order of 0.5 mm thickness). When the antenna receives signals, the backplate may block signals with intermodulation distortions from reaching the antenna. When the antenna is to transmit signals, the backplate may block the transmitted signals passing through the antenna monitoring device thereby avoiding the introduction of intermodulation distortion.