SELF MONITORING/CALIBRATING PHASED ARRAY RADAR AND AN INTERCHANGEABLE, ADJUSTABLE TRANSMIT/RECEIVE SUB-ASSEMBLY

Abstract

The invention relates to a self monitoring/calibrating phased array radar in which the operating path for transmission and the operating path for reception may be monitored/calibrated by the addition of a corporate calibration network coupled at the plural end to the antenna elements and at the singular end to the exciter/receiver, and switching means to selectively route the monitoring/calibrating signal derived from the exciter in a transmit path to calibration path sequence or in a calibration path to receive path sequence. In one embodiment of the invention, a phase shifter common to transmit and receive paths is adjustable in increments under active logical control for calibration, while power and gain performance is monitored but not actively controlled. A novel T/R sub-assembly houses the operating electronics for four antenna elements in the form of four T/R modules with a one to four divider network in the transmit/receive path and in the calibration path. The four antenna elements are an integral part of the T/R sub-assembly.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1HARRY C. AST

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