Satellite Downlink or downlink of satellite circuit is a feeder link that transmits the signal from satellite down towards the ground-based station i.e., earth station. The downlink includes the factors that affect the transmission from satellite to earth station. It can be understood more easily by considering that downlink denotes a link down from the …
Satellite Uplink or uplink of satellite circuit is the link where the earth station is transmitting the radio wave towards the satellite which acts as the receiving station. It includes all those factors responsible for transmitting signals from an earth station to a satellite. Satellite links allow us to enable communication over large distances. The …
Satellite link budget or simply link budget in satellite communication is nothing but the calculation of various factors so as to have an estimation of power that is transmitted from the earth station to satellite and satellite to earth station in order to have a reasonable amount of power reception at the ends. This calculation …
VSAT is an acronym used for Very Small Aperture Terminal. It is a dual-way ground station that has a small antenna and is used for the purpose of transmitting and receiving the data to and from the satellite orbiting earth in space. The data from the ground station is provided to the satellite through VSAT …
The motion of satellites in space was governed by the laws of planetary motion proposed by Johannes Kepler. There are three laws, known as Kepler’s three laws that describe the motion of a satellite in space. The first law of Kepler is also known as the law of orbits, the second law is called the …
Definition: Earth Station also known as the ground station is an arrangement of various equipment on the surface or atmosphere of the earth that is used to transmit or receive signals in the form of voice, video, or data through single or multiple satellites. It is sometimes called the earth terminal and is a part …
Definition: The motion of satellites around the earth can be done through various paths, so, the paths in which the satellite is rotated around the earth are known as Satellite Orbits. These are also known as orbits of satellites. The various paths followed by the satellites have their own significance because of their respective applications. …
Definition: The word ‘transponder‘ is formed by combining the terms transmitter and responder. A satellite transponder is a transparent relay channel that connects the transmitting and receiving antennas for the purpose of communication. It is basically a multiple equipment channel and not simply a single item of equipment that connects the two separate stations. So, …
In the radio-frequency spectrum, the various frequency ranges possess different propagation characteristics thus each part of the spectrum is used for specific types of applications. The propagation characteristics of radio waves show high dependency on frequency. In the previous content on the radio frequency spectrum, we have discussed that a part of the electromagnetic spectrum …
Antenna Temperature, in reality, is not the actual temperature of the physical device(antenna). Basically, Antenna Temperature is defined as the temperature of the region present near and distant to the surroundings that are coupled to the antenna via radiation resistance. It is also known as antenna noise temperature and is not an inherent property of …