| 摘要 |
FIELD: radio engineering and communications.SUBSTANCE: invention relates to aircraft antennae. Can be used in decimetre wavelength range as transmitting or receiving antenna of aircraft (AC) having section of path with low atmospheric pressure, on which it is necessary to transmit radio signals. AC antenna comprises cylindrical resonator open at one end, filled with dielectric, pad, radiator, sleeve, coaxial connector to centre conductor. Centre conductor of coaxial connector is elongated inside cylindrical resonator and is located in sleeve. Open at one end cylindrical resonator is housing of AC antenna. Radiator is mounted on housing by means of screws. Coaxial connector is secured on housing bottom cover so that its longitudinal axis is perpendicular to antenna axis. Sleeve is secured on housing bottom cover in dielectric. Along sleeve towards bottom cover is made smooth section for implementation of adjustment of currents, flowing on centre conductor of coaxial connector and sleeve. Radiator is made in form of two conductors on printed circuit board substrate. Conductors are located in one plane and bent at angle of 90°, wherein short and long sections of conductors from bending points are located coaxially and equal in pairs. Sections of each conductor length and width are selected so that phase difference of currents between short and long sections makes 90°. One conductor is connected to centre conductor of coaxial connector, and other conductor is with sleeve.EFFECT: simplified design of radiator, improved manufacture ability, broader functional capabilities, higher reliability.1 cl, 5 dwg |
