METHOD OF CONSTRUCTING AN ACTIVE PHASED ANTENNA ARRAY Russian patent published in 2020 - IPC H01Q21/00 

FIELD: antenna equipment.

SUBSTANCE: invention relates to antenna engineering and is intended for construction of active phased antenna arrays (APAA) for radio communication and radar systems. Antenna elements are placed on front panels of multichannel transceiving modules in nodes of rectangular or triangular grid, with pitch along vertical and horizontal, determined by required scanning sector, respectively, in vertical and horizontal planes, connecting each radiator to input / output of one of channels of multichannel transceiving module, forming an antenna band of an active phased antenna array from multichannel transceiving modules, by placing them adjacent to each other such that the surfaces of their front panels are located in one plane, and the distance between the emitters is kept constant in the vertical and horizontal planes, wherein the front panels of the transceiving modules function as a screen, forming a heterodyne signal and distributing it to multichannel transceiving modules, in transmitting mode generating a beam pattern with a given shape by setting phase and amplitude ratios of the transmitted signal in the channels of the transceiving modules, receiving mode amplifies received signals, frequency-converted, sampling signal at intermediate frequency from output of receiving part of each channel of transceiving module and generating from the obtained samples the required number of beams of the receiving beam pattern by weight summation of signals in the digital beam formation system. According to the invention, generating a reference signal with a fixed frequency and distributing it to multichannel transceiving modules, in each transceiving module using a reference signal in a transmission mode, generating a transmitted signal in the built-in signal former and distributing it to channels of that module, wherein transmitting signal is amplified in transmitting part of each channel by built-in power amplifier, in each transceiving module by means of reference signal sampling signal is generated, which is used for discretisation of signal from output of receiving part of each channel of transceiving module, wherein the number of types of generated transmitted signals in different multi-channel transceiving modules is determined based on the required number of generated beam pattern.

EFFECT: technical result is possibility of APAA separation into several subarrays, which form independent transmitting BP with electronic scanning.

1 cl, 6 dwg