Satellite Antenna and its Role — Lesson 5

This lesson covers the concept of Link Power Budget in satellite communication. It delves into the signal power, its transmission, reception, and the losses incurred. The lesson also discusses the generation of noise in the components and how the noise figure and noise temperature are defined. It further explains how these can be calculated in a cascaded system. The lesson also explores the role of the antenna in receiving noise in addition to the signal and its characteristics. The lesson concludes with a discussion on the Quality of Service, which depends on the Signal Power and the ratio of Signal Power and Noise Power.

Video Highlights

00:03 - Introduction
01:27 - Antenna Noise temperature and output
02:14 - Explanation of antenna design and gain
05:20 - Satellite Antenna and its role in communication with earth
08:50 - Earth Station Antenna and how it receives noise
12:29 - Sky noise and how noise varies with elevation angle and frequency
21:23 - Quality of service
25:23 - Concept of Noise Power Density

Key Takeaways

- Signal power is transmitted and received with certain losses.
- Noise is generated in the components and is defined by the noise figure and noise temperature.
- Antennas receive noise in addition to the signal and have specific characteristics.
- The Quality of Service in satellite communication depends on the signal power and the ratio of signal power and noise power.