| 摘要 |
antenna engineering; antennas for communication systems. SUBSTANCE: antenna that has wire turn 1 placed above metal screen 2 in parallel with its plane is provided, in addition, with capacitors 3 inserted in wire turn 1 and spaced through distance T apart. Capacitor value C equals , where ω is circular frequency; k = 2pi/lambda is wave number; W is wave impedance; n = La/lambda, La is wire turn length; lambda is wavelength; T < 0,1lambda. Antenna is excited by coaxial cable 4 from one end of wire turn 1 whose other end is connected to metal screen 2 of matched load 5. EFFECT: enhanced antenna gain with wire turn distance from metal screen being much shorter than wavelength. 1 dwg |
