| 摘要 |
FIELD: antenna.SUBSTANCE: invention relates to antenna technology. Characteristic feature of disclosed antenna is that an electrically short antenna element is a metal plate, wherein output of antenna element is connected to amplifier input via an LC four-terminal element, acting as a frequency filter, and two resistors, one of which is connected in series between antenna element and LC four-terminal element, and second is also connected in series between the LC four-terminal element and active amplifier input, as well as protection of circuit of amplifier and LC four-terminal element from lightning and overvoltage, consisting of a discharger, connected in parallel to input of antenna element, wherein operation of diodes and discharger is matched to each other through value of first resistor, and between input and output of amplifier is connected a feedback resistor.EFFECT: technical result is creation of a broadband receiving active antenna with filtration of input signal, protected from lightning strikes and overvoltage, having minimum front aerodynamic resistance, high noise-immunity.1 cl, 2 dwg |
