| 摘要 |
FIELD: physics, radio.SUBSTANCE: invention relates to antenna equipment and can be used in designing small-size antenna devices for communication equipment and transmitting data in MW, SW and USW frequency ranges. The small-size capacitive antenna with a matching inductance includes series-connected inductance coil and capacitive element whose plates are in form of coaxial cylindrical current-conducting surfaces placed vertically one above the other. Connection of the elements forms an antenna oscillatory circuit with resonance at the given frequency of the transmitted or received electromagnetic signal. The antenna is fed through a coaxial line connected to the matching inductance coil which is connected in series to the inductor of the antenna circuit and is placed coaxially with it. All components of the antenna are made on a cylindrical base made of a radiotransparent dielectric.EFFECT: higher efficiency of the antenna during radiation, higher responsiveness and simpler method of matching the antenna with the characteristic impedance of the feed line during operation.6 cl, 3 dwg |
