LOOP ANTENNA Russian patent published in 2018 - IPC H01Q7/00 

FIELD: antenna equipment.

SUBSTANCE: invention relates to antennae of meter range. Loop antenna comprises a conductive pipe (CP) with a first end and a second end, bent into a ring to form a gap between the first and second ends, a feeder, additionally comprises a first conductive sleeve (FCS) and a second conductive sleeve (SCS), matching cable section (MCS) to the first end and the second end, wherein the FCS is installed in the CP in the area of its first end to form a point of galvanic contact with the CP; SCS is installed in the CP in the area of its second end to form a point of galvanic contact with the CP; MCS is routed in the CP through the SCS to form a point of galvanic contact between the outer conductor of the MCS and the SCS in the gap area; the second end of the MCS is open and is not connected to anything; there is an opening made in the area diametrically opposite to that gap; feeder is inserted into the CP through the said opening and is routed in the CP up to its first end; outer conductor of the feeder in the gap area is connected to the FCS to form a point of galvanic contact; central conductor of the feeder is routed in the gap area to form a point of galvanic contact with the central conductor of the MCS.

EFFECT: technical result consists in the possibility of fine tuning the loop antenna to the working (resonant) frequency.

1 cl, 7 dwg