Telecommunications engineering

The Communications Engineering is an engineering science that deals as a branch of electrical engineering with the recording, transmission, processing and storage of messages ( information ).

Definition and delimitation

The communications engineering deals with the generation, conversion, transmission, switching, storage, processing and output of information-bearing signals. The main task of communications is to transmit information as purely as possible from one or more sources to one or more sinks. Go to news technology ranks amongst numerous other disciplines also telecommunications. Telecommunications is information exchange between spatially distant sources and sinks using message- technical systems.

Occasionally the news media / communication technology is mistaken for the communication science. The communications engineering is concerned with the technical systems for communication, communication science, however, is concerned with the communication between entities. ( Transmission and processing ) Generally between people but also between machines such as Computers. A subspecialty are mass media content (eg advertising), which in telecommunication systems (eg radio ), but also on traditional media (eg, newspapers, lectures) will be distributed and how they affect people.


Due to new scientific evidence, the possibilities of telecommunication extended continuously. This development was also reflected in the change of the name of this engineering discipline. One spoke initially of low power technology, as telecommunications was coined about 1909 by Rudolf Franke 's name. Today one speaks also of information and communication technology.


The communications engineering covers a very large area of ​​responsibility, so that a whole series of sub- areas has emerged.

Technical sub-areas:

  • Antenna Technology
  • Electronic data processing
  • Filter technology
  • Wireless technology
  • Channel coding
  • Modulation
  • Amplifier
  • Circuit technology
  • Signal processing
  • Telecommunications
  • Transmission technology
  • Laser
  • Sound
  • Switching technology
  • Computer Networks
  • Services
  • Mobile Communication
  • High Frequency Technology
  • Sensors
  • Radar technology
  • Locating
  • Correlation
  • Terminal technology

Theoretical foundations:

  • Signal Theory
  • Information Theory
  • Coding Theory
  • Systems theory
  • Message traffic theory
  • Data compression
  • Circuit theory

Frequency ranges

According to the frequencies used, a distinction in communications technology

  • Low Frequency Technology (audio engineering )
  • High Frequency Technology ( radio and television technology, radio, mobile radio, satellite communications )
  • Microwave technology (radar, laser)
  • Category: Optical Communication ( fiber optic cable )


The largest man-made machine is a communications engineering system: The global telephone network. Another communications engineering system, the Internet is on the way to the telephone network that outstrip, not least the fact that the Internet takes over tasks of the telephone network. Physically, these systems are so interlocked that no distinction is possible.

The Internet is an example of the smooth transitions of communications technology for computer science. On one hand, communications systems are often key components in the computer systems of technical and applied computer science, on the other hand are often based modern communications systems on theories and methods of computer science and are in the core computer systems.