RU98107490A - TWO-BAND PIN ANTENNA - Google Patents

Claims (1)

A dual-band counterbalanced whip antenna, characterized in that the antenna is made in the form of a conductive tape of width δ ≪ λ (λ is the wavelength in the upper frequency range), which is located on one side of the dielectric plate of thickness ζ, and on both sides of the tape on the same side of the dielectric plate at a distance D at δ <D ≅ 0,1λ are two other conductive tape width δ ₁ ≅ δ, in which the period 2T <2πD breaks made with the magnitude of the gap δ, while on the other side of the dielectric plate under ribbons with pa conductive tapes with discontinuities with a period of 2T and with a gap Δ are also located in breaks, and the gaps in the tapes located on opposite sides of the dielectric plate are shifted relative to each other by a value T so that the overlap with an area S = δ · (T-Δ) form capacitors with capacitance

where: H $\genfrac{}{}{0ex}{}{\text{(}}{\text{o}}$ ²⁾ (X), H $\genfrac{}{}{0ex}{}{\text{(}}{\text{1}}$ ²⁾ (X) - Hankel functions;
W is the wave impedance;
ω is the circular frequency;
K, p is the wave number,

2. The dual-band pin antenna according to claim 1, characterized in that in the node of the antenna excitation, the central conductive tape is connected to the central conductor of the coaxial cable, and both tapes with breaks located on one side of the central tape are connected to the counterweight and the outer conductor of the coaxial cable .