transmitter receiver module for a phasengesteuertes antennenfeld for a radar in x band

摘要

1,203,952. Aerials; pulse radar. TEXAS INSTRUMENTS Inc. 5 Oct., 1967 [30 Dec., 1966], No. 45493/67. Headings H4A and H4D. In a pulse radar which includes a plurality of transmit-receive modules 14 in a phased aerial array, each module comprises an aerial 32, an input 22 for receiving an R.F. carrier during the radar transmission period and a local oscillator signal during the radar reception period, a transmitting circuit including a phase shifter 44, a receiving circuit including a phase shifter 56 and a mixer 60, a switch 42 for connecting input 22 to phase shifter 44 during the radar transmission period and to phase shifter 56 during the radar reception period, and a transmitreceive switch 50. In the embodiment varactor frequency multipliers 48, 58 and digitallycontrolled, diode-switched, strip line phase shifters are utilized, Figs. 4, 5 (not shown). The array consists of rows and columns of the modules, a computer providing for beam scanning in azimuth and elevation. Beam shaping is provided by a distribution manifold and in the application to an airborne radar the echo I.F. signals are processed for feeding a terrain collision-warning computer, Fig. 2 (not shown). Specification 1,124,266 is referred to.