P. A. Shmachilin

The article deals with the issues of designing modern digital antenna arrays with the development of modern element base of digital circuitry. A principle of construction of the digital antenna array of about 1000 elements on the lattice with frequency conversion 4 GHz, is described. The basic element of the digital antenna array is a digital channel signal, which main part is the Digital Transceiver Module. The digital module of a digital antenna array can be created on the basis of an existing receiving module of the active phased array. The article describes an approach permitting this conversion. Advantages of digital signal processing for transmitting, analog active phased-array are considered. In addition, the article describes several approaches to digital beamforming. Relationship between characteristics of antenna array and parameters of the digital components is shown. Different processor architectures for formation of a direction pattern are considered. Comparison of cost and performance characteristics is carried out. Principles of creating multi-operating system for the digital microwave, system are considered.