RECEIVING-TRANSMITTING LOOP ANTENNA Russian patent published in 1997 - IPC

FIELD: antenna equipment. SUBSTANCE: proposed receiving-transmitting: loop antenna can be used as receiving-transmitting antenna of mobile communication facilities of decametric and metric wave bands. Antenna has two open conductive loops and two tuning capacitors of variable capacitance. First leads of loops are interconnected and linked to first leads of tuning capacitors, second leads are connected to other leads of loops forming leads of antenna. Given loops can be oriented spatially in same way relative to their connected leads or in opposition which provides for maximum retuning of frequency correspondingly upwards or downwards. EFFECT: expanded range of retuning of working frequencies with simultaneous increase of its efficiency. 3 cl, 2 dwg, 2 tbl