TWO-COMPONENT BROAD-BAND RECEIVING ANTENNA ASSEMBLY Russian patent published in 2013 - IPC H01Q7/04 

FIELD: radio engineering.

SUBSTANCE: two-component broad-band receiving antenna assembly contains metal base, on which there arranged are two mutually orthogonal receiving magnetic antennae on rod-type ferritic cores located crosswise, with windings provided on each of the cores and located symmetrically relative to central sections of cores; balance-to-unbalance transformers and connectors; differential outputs of windings are connected to differential inputs of balance-to-unbalance transformers, and outputs of balance-to-unbalance transformers are connected to connectors. The above antenna assembly includes electric shields of receiving antennae with longitudinal slots, shielded communication lines, antenna reduction end elements, receiving magnetic antennae are offset relative to each other in vertical plane, located above metal base, the plane of which is parallel to longitudinal axes of receiving magnetic antennae; windings of each receiving magnetic antenna are placed in electric shield with longitudinal slot; shields of upper and lower receiving magnetic antennae are electrically connected to each other at antenna cross point; besides, longitudinal slot of upper receiving magnetic antenna shield faces upwards; longitudinal slot of lower receiving magnetic antenna shield faces downwards; to ends of lower receiving magnetic antenna shield there symmetrically connected are electrically-conducting structurally identical antenna reduction end elements closing electric shields to metal base, and shielded communication lines between differential outputs of receiving magnetic antennae and differential inputs of balance-to-unbalance transformers are routed along surfaces of lower receiving magnetic antenna shield, end reduction elements and metal base symmetrically relative to central cross section of core of lower receiving magnetic antenna, and shielding covers of communication lines are electrically connected to shield of lower receiving magnetic antenna, end reduction elements and metal base.

EFFECT: improvement of polarisation isolation between mutually orthogonal receiving antennae and reduction of bearing measurement error.

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