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

FIELD: antenna equipment. SUBSTANCE: given loop antenna can be used in the capacity of receiving-transmitting antenna of mobile communication facilities of decametric and metric wave bands. Proposed antenna includes two open conductive loops and two tuning capacitors of variable capacitance. First leads of loops are interconnected and form first lead of antenna and their second leads are connected to first leads of tuning capacitors which second leads are tied up together and form second lead of antenna. Specified loops can be spatially oriented in same way or in opposition relative to their connected leads which ensures 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