One of the main bases of the modern society is the need for fast flow of information.
To ensure this, the countries need a reliable communication network. As the amount of
information increases and needs to travel faster, the network must grow and develop as well.
The telecommunications technology has a quite short history, but it is full with innovations,
and creative solutions.
In this short summary I will write about past and present of the microwave communication. I
will make a comparison between optical and wireless microwave communication, to see why
it is so important to develop wireless systems. I want to introduce the HEMT, and how it is
affecting the development of the state of the art microwave communication. In addition I want
to summarize some technical properties of the HEMT manufacturing.
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Norbert Réti