Telemetry Tracking and Command Subsystem
Telemetry, Tracking and Command (TT&C) Subsystem The tracking, telemetry, and command (TT&C) subsystem monitor and controls the satellite right from the lift-off stage to the end of its operational life…
Very Small Aperture Terminal (VSAT)
Very Small Aperture Terminal (VSAT) VSAT stands for Very Small Aperture Terminal. In satellite communication, the development and technology have allowed, data and voice communication cost-effective for a broader range…
Waveguide Phase Shifters
Waveguide Phase Shifters Waveguide Phase Shifters: A phase shifter is a two-port component that provides a fixed or variable change in the phase of the traveling wave. An ideal phase shifter is lossless and…
Resistor-Transistor Logic (RTL)
Resistor-Transistor Logic (RTL) The resistor-transistor logic (RTL) are digital circuits that are constructed using resistors and bipolar junction transistors (BJTs). The resistors are the input network while the transistors function…
Diode Logic in logic family
Diode Logic The diode logic uses diodes and resistors to implement Boolean functions. Diodes function as a switch that conducts only during the forward biasing condition. The simplicity in the…
Transistor-Transistor Logic (TTL)
Transistor-Transistor Logic (TTL) TTL as outlined above stands for Transistor-Transistor Logic. It is a logic family implemented with bipolar process technology that combines or integrates NPN transistors, PN junction diodes,…
Differences between MTI and Pulse Doppler Radar
Differences between MTI and Pulse Doppler Radar The differences between the MTI and Pulse Doppler Radar (PDR) techniques are discussed in this section for a better understanding of the MTI…
Waveguide Attenuator
Waveguide Attenuator Waveguide Attenuator: An attenuator is a passive device that is used to reduce the strength or amplitude of a signal. At microwave frequencies, the attenuators were not only…
Waveguide Discontinuities
Waveguide Discontinuities Waveguide Discontinuities: Any interruption in the uniformity of a transmission line leads to impedance mismatch and is known as impedance discontinuity or waveguide discontinuities. In a waveguide system,…
Multiplexing | Frequency Division, Time Division
Multiplexing Multiplexing divides the physical line or a medium into logical segments called channels. In multiplexing, different channels carry data simultaneously over the same physical medium. Hardware equipment called multiplexer…