TRANSMIT-ARRAY ANTENNA FOR A MONOPULSE RADAR SYSTEM

摘要

An antenna including: an array of individually-controllable elementary cells, each cell being capable of transmitting a radio signal by introducing into the signal a controllable phase shift selected from among at least two discrete phase-shift values; on the side of a first surface of the array, first, second, third, and fourth primary sources capable of respectively irradiating first, second, third, and fourth consecutive quadrants of the array; and a processing circuit capable of supplying a first signal representative of the sum of the signals S1, S2, S3, and S4 supplied, respectively, by the first, second, third, and fourth sources, a second output signal representative of difference S1+S2−S3−S4, and a third output signal representative of difference S1−S2−S3+S4.

主权项

1. An antenna comprising:
an array (203) of individually-controllable elementary cells (205), each cell being capable of transmitting a radio signal by introducing into the signal a controllable phase shift (φ) selected from among at least two discrete phase-shift values; on the side of a first surface (203a) of the array, first (S1), second (S2), third (S3), and fourth (S4) primary sources capable of respectively irradiating first (2031), second (2032), third (2033), and fourth (2034) consecutive quadrants of the array; and a processing circuit (207) capable of supplying a first signal (SΣ) representative of the sum of the signals S1, S2, S3, and S4 supplied, respectively, by the first (S1), second (S2), third (S3), and fourth (S4) sources, a second output signal (SΔ) representative of difference S1+S2−S3−S4, and a third output signal (SΔ′) representative of difference S1−S2−S3+S4.