What factor can cause an increase in signal attenuation in coaxial cables?

Higher temperatures contribute to increased signal attenuation in coaxial cables due to the physical properties of the materials involved in the cable's construction and the conductive characteristics at varying temperatures. As the temperature rises, the resistance of the conductor increases, leading to greater energy loss as heat. This resistance causes more signal degradation as it travels through the cable, resulting in higher attenuation.

In coaxial cables, the dielectric material surrounding the conductor also plays a role; elevated temperatures can affect its properties, further compromising signal integrity. Therefore, a rise in temperature negatively impacts the performance of coaxial cables, making it a significant factor in increasing signal attenuation.