System and method for generating wireless electromagnetic transmissions modulated with software defined complex waveforms

摘要

An air interface array system and method for generating electromagnetic transmissions is provided. The system includes partition elements separately and operationally connected to horizontal and vertical circuit boards. In transmission, a radio frequency input is provided to each board. Each circuit board has a phase selector that generates a symbol with one of four phases relative to a plane of the partition elements such an output signal is produced. A time delay selector delays the output signal in order to focus the transmitted beam to be an input signal to an amplifier. The amplified signal drives radio frequency ports to produce horizontally and vertically polarized radiated signal vectors. The signal vectors are combined to form a radio frequency modulation symbol vector. Multiple symbol vectors form a transmitted modulation waveform.

主权项

1. A transmitting system comprising:
an array of partition elements, each of said partition elements having conductive material, a portion of each of said partition elements being conical for radio frequency use with said array having at least one horizontal radio frequency port for generating vertically polarized radio frequency transmissions and at least one vertical radio frequency port for generating horizontally polarized radio frequency transmissions wherein said partition elements are located at intersections of a grid; at least one digitally synthesized radio frequency carrier source; at least two radio frequency circuit board operationally connected to said at least one radio frequency carrier source with each of said at least two circuit boards also operationally connected to each of said partition elements, said circuit boards integrating at least one phase referenced radio frequency input carrier frequency from said carrier frequency source with said circuit board having a radio frequency carrier phase selector with at least four selectable radio frequency carrier phases, a radio frequency carrier time delay selector, and a radio frequency amplifier; and a digital controller for controlling carrier frequency from said carrier frequency source, for controlling said carrier phase selector, for controlling said carrier time delay selector, and for controlling gain and output power of said amplifier; wherein a circuit board output radio frequency carrier signal is oriented to drive said at least one vertically polarized radio frequency port or said at least one horizontally polarized radio frequency port.