In a RADAR system, waveguides should be installed:

In a RADAR system, the installation of waveguides is critical to the overall performance and efficiency of the system. Installing the waveguides as straight as possible is essential because it minimizes the distortion of the signals being transmitted and received. Straight waveguides help maintain the integrity of the electromagnetic waves, ensuring that they travel without unnecessary reflections or scattering that are more likely to occur with bends or curves.

The geometric shape and path of the waveguide can significantly affect the propagation of the radio waves. When the waves encounter bends or other irregularities, it can lead to modal dispersion and attenuation, which can reduce the effective range and accuracy of the RADAR system. Therefore, maintaining straight waveguides is crucial for optimizing signal quality and system reliability.

The other options have various limitations; for example, bending the waveguides can introduce unwanted losses and affect the gain negatively. Right angles can create reflections that interfere with the wave patterns, and excessively long waveguides could increase loss due to attenuation. Thus, the straight installation of waveguides is the best practice in RADAR systems to ensure clear signal paths and effective operation.