Presently we are witnessing great efforts which aim at soaring the role of the antenna and relevant signal processing in the concepts of communication and radar systems. The interest in modern antenna technologies has been substantiated by the belief that the gains from new antenna concepts are likely to be most profitable, since well-organized spatial access to the radio channels competes successfully with many modern modulation and coding methods. Even though, techniques using space-time coding with multipathly propagating signals (e.g. MIMO) might need less focused radio wave transmission and reception, highly integrated antenna arrays are of great desire. These challenging tasks placed the antenna technique in the critical spot of the development of modern communication. Thus, the 'lagging behinď of the antenna designs exposes the launch of new systems to jeopardy.
In this monograph, we attempt to describe two evaluation methods developed in-house for the needs of the research on highly integrated lightweight antennas. With one of the methods ił is possible to carry out simulations of highly integrated antennas made of composites or other dielectrics. The other method explores the near field of the antenna. The capabilities of both methods have been upgraded as compared to those described in the literature. In contrast to conventional measuring methods which provide overall data, ił is expected that the considered evaluation methods will enable instant pointing of non-conforming elements. As in both methods use is made of indirect approach, comprehensive data processing or simulations must be performed in order to achieve interpretable results.
Cena: 20 zł
Liczba stron: 190 • Format: 170 × 240 mm • Rok wydania: 2004
ISBN 83-7085-765-5