| Abstract: | A planar reflection array consisting of a primary radiator and an array of secondary microstrip radiators such that the phases of the fields generated by these radiators are identical in the direction of radiation is considered. This identity is attained by means of a forced phase step of the reradiated field. An approximate method for calculating the phase step of the reflected field relative to the phase of the incident field that arises during reradiation of the incident signal by an element of the reflection array is proposed. The method is based on the theory of dipoles and the reciprocity theorem. Dependences of the phase step on the dimensions of the antenna and the reactive stub, as well as the capacitance of the capacitor formed by the slot cut in the antenna, are studied. The calculation method is extended to the case of a two-stack microstrip antenna. A method is proposed for setting the maximum of the radiation pattern of this reflection array in a specified direction via the use of an electric signal to control the capacitances of the capacitors in the array elements. |
