FIELD: radio engineering, communication.
SUBSTANCE: cardioid antenna consists of two mutually perpendicular frames, connected through a beam pattern rotating device to the first input of an adder, and the second input is connected through a matching device to an omnidirectional antenna, which is in form of two series-connected mutually perpendicular anti-phase coplanar frames that are horizontally spaced apart. Signals from the output of the adder are transmitted to the input of a radio receiving device. All antenna conductors in contact with sea water are insulated.
EFFECT: high security of submarines when receiving messages in jammed conditions by replacing a whip antenna with an antenna made in form of two series-connected mutually perpendicular frame antennae, each consisting of two anti-phase coplanar frames that are horizontally spaced apart.
1 dwg
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