| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: in an antenna, having a resonator and a radiator, which is in the form of a flat two-turn helix, which is rigidly attached to the aperture plane of the resonator and is connected to a feeder, the outer winding of the flat two-turn helix is in the form of a delay line by endowing the outer turn with a zigzag shape with uniform arrangement of zigzag protrusions along the middle line of the outer winding and connecting capacitors between the zigzag protrusions, wherein the height H of the zigzag protrusions relative to their width h is limited by the relationship H<7h, and the capacitance of the capacitors is selected based on the conditionwhere Lis the length of the outer winding at its middle line, fis the minimum operating frequency of the antenna, Lis the inductance of the zigzag protrusion of the maximum height.EFFECT: expanding the operating frequency band of the antenna towards low frequencies.3 cl, 2 dwg |
