Telecom Italia S.p.a.

Pirelli & C. S. P. A.

Telecon Italia S.p.a.

Renato Scotti

Paolo Gianola

Daniele Disco

Roberto Vallauri

Maurizio Crozzoli

Francesco Coppi

Davide Forigo

A method of performing digital beam forming on the radiation pattern of an array antenna using a plurality of antenna elements, each antenna element being coupled to a signal processing chain. A weighting phase is used in which at least a complex weight coefficient is applied to a digital signal in a corresponding signal processing chain. The digital signal is an intermediate frequency digital signal, and the weighting phase has the following steps: a) duplicating the digital signal into a first and a second digital signal; b) processing the first and second digital signals by multiplying the first and second digital signals respectively by a real and an imaginary part of the complex weight coefficient; applying a Hilbert transform to that signal which is multiplied by the imaginary part of the complex weight coefficient; and c) combining the processed first and second digital signals into a weighted digital intermediate frequency signal by subtracting the second signal from the first signal.

Method and system for performing digital beam forming at intermediate frequency on the radiation pattern of an array antenna

The method for evaluating electrical field levels in the near-zone of transmitting antennas, particularly linear array antenna widely used in cellular telephony systems, provides accurate evaluation while requiring reduced processing times and a restricted set of input data, such as physical external dimensions of the antenna, its gain and its radiation patterns in the vertical plane and in the horizontal plane.

Method for evaluating electrical field levels in the near-zone of transmitting antennas

Growing community of inventors

Turin, Italy

Renato Scotti