If the frequency increases while path length remains constant, attenuation will:

If the frequency increases while path length remains constant, attenuation will:

• A. Increase
• B. Decrease
• C. Stay the same
• D. Fluctuate

Answer: (A)

Attenuation is the loss of signal strength as it travels through a medium. When the path length is fixed and the frequency increases, the energy that the medium can absorb per unit length generally goes up, so the total loss over that distance becomes larger. This happens because higher-frequency waves interact more with the material: conductor losses rise due to skin effect (current flows in a thinner surface layer, increasing resistance and energy dissipation), and dielectric losses often increase with frequency (loss tangent rising in many dielectrics). As a result, the signal is attenuated more as frequency goes up, even though the distance stays the same. Therefore, attenuation increases.

Attenuation is the loss of signal strength as it travels through a medium. When the path length is fixed and the frequency increases, the energy that the medium can absorb per unit length generally goes up, so the total loss over that distance becomes larger. This happens because higher-frequency waves interact more with the material: conductor losses rise due to skin effect (current flows in a thinner surface layer, increasing resistance and energy dissipation), and dielectric losses often increase with frequency (loss tangent rising in many dielectrics). As a result, the signal is attenuated more as frequency goes up, even though the distance stays the same. Therefore, attenuation increases.