QUADRIFILAR ANTENNA Russian patent published in 2010 - IPC H01Q11/00 

FIELD: radio engineering.

SUBSTANCE: invention makes it possible to receive (transmit) waves with circular polarisation. Quadrifilar antenna consists of four spiral radiators arranged with angle shift by ninety degrees arranged in the form of three metal conductors - central and two side ones, which at one end are connected to each other, and at the other one - connected to terminals of supply circuit, besides central and side conductors are arranged in the form of strip conductors and have various width W₁ and W₂ accordingly, ratio of which is established within the following limits: , gaps between central and side conductors are arranged as identical, and their ratio to width of central conductor w₁ is established within the following limits: . Such arrangement of spiral radiators provides for realisation of input resistance of antenna close to standard value of 50 Ohm.

EFFECT: improved coordination of antenna, expansion of working frequencies band and increased coefficient of its amplification.

2 cl, 16 dwg