What is an effective way to improve communication range with a satellite?

• A. Using a higher frequency
• B. Deploying more powerful amplifiers
• C. Utilizing a larger antenna
• D. Reducing the transmission duration

Answer: (C)

Utilizing a larger antenna is an effective way to improve communication range with a satellite because the gain provided by a larger antenna enhances its ability to receive signals over greater distances. Larger antennas collect more of the signal energy available from the satellite and can more effectively focus the transmitted signal toward the satellite. The increase in surface area allows for better reception of weaker signals, which can be crucial when dealing with far-off satellites or overcoming interference. Additionally, a larger antenna typically results in a narrower beamwidth, concentrating the signal and increasing the effective range. This principle applies regardless of the frequency being used, as the antenna's physical size relative to the wavelength plays a critical role in its performance.

A higher frequency can offer benefits such as increased bandwidth but does not inherently improve range without considering antenna characteristics. More powerful amplifiers can boost signal strength but may also lead to issues like signal distortion if not managed properly. Reducing the transmission duration would typically not enhance range; rather, it can limit the time available for effective communication, reducing overall effectiveness. Thus, focusing on the antenna's size and gain is key to maximizing range in satellite communications.