Some properties of Van Atta arrays and the use of 2-way amplification in the delay paths

The paper describes how the principle of a Van Atta linear array may be extended to circular arrays, which can act as corner reflectors over 360°. It is also shown that several methods are available for varying the direction of the reflected signal relative to the incident wave. The properties of such arrays with 2-way amplification in the delay paths is discussed, and some possible applications are suggested in the field of responder beacons and satellite communication.