Abstract: Angle of arrival of a pulsed RF signal, such as that emitted by a radar transmitter, is determined by use of a detection circuit that contains a single RF receiver. The RF signal direction of arrival determining system contains a switching means to automatically alternately switch the outputs from two physically spaced receiving antennas to the input of the RF tuner. In turn the tuner's output is coupled to a power divider. The output of this power divider is branched, one output being coupled through a first IF amplifier to one of the two inputs of a phase detector and the second output being coupled through a second circuit, containing a delay line and an IF amplifier serially arranged, to the second input of the phase detector. The phase detector displays the phase difference between the two signals.

Abstract: A microstrip type transmission line connects RF signals between separate spaced microwave components and defines a RF connecting strip having a flexible insulator base and a ski slope shaped geometry.