SU1264257A1 - Slot annular aerial - Google Patents

Abstract

Invention m. used as a broadband combined non-overhang antenna. The purpose of this is to expand the frequency range and form an electromagnet. circular polarization radiation. The antenna contains an annular gap 1 in a horizontal screen, an annular resonator (P) 2, in which the excitation pins 3 are installed, connected by segments 4 of coaxial cable of equal length with power divider 5, its input is connected through the first coaxial feeder (KF) 6 s a high-frequency connector (VCHR) 7, which is the first antenna input, as well as a multiple spiral helix 8 over the cylindrical. P 9, with the beginning of the spiral 8 through the contact sleeve 10 connected to the central conductor of the second KF 11, the outer conductor of which is connected to the support tube 12 connected with CP 9 and. with a matching ring 13, which forms a capacitor 14 with the conductors of the helix 8, the other end of the CF 11 has a VCHR 15 which is the second antenna input, and a flange 16 for mounting on the metal case 17 of the vessel and a sleek dielectric. fairing 18.1 Il.

Description

The invention relates to antenna technology and can be used as a broadband, non-juxtaposed antenna.

The purpose of the invention is to expand the frequency range and the formation of electromagnetic radiation of circular polarization.

The drawing shows a schematic diagram of a slit ring antenna

The slit annular antenna contains an annular slit 1 in a horizontal screen, an annular resonator.2, in which excitation pins 3 are connected at equal distances from each other, connected by coaxial cable lengths 4 of equal length to the power divider 5, the input of which is connected through the first coaxial feeder 6 with high-frequency connector. which is the first input slit annular antenna, as well as a multiple-helix 8 above the cylindrical resonator 9, with the beginning of the multiple-helix 8 through the contact sleeve 10 connected to the central conductor of the second coaxial feeder 11, the outer conductor of which is connected to the supporting tube 12 connected to the cylindrical resonator 9 and with a matching ring 13, forming together with the conductors of the multiple helix 8 a capacitor 14, and the other end of the second coaxial feeder 11 has a high-frequency connector 15, is yuschiys second input slit annular antenna and flange 1 for attaching the housing to the metal vessel 17 and the flat dielectric radome 18.

Slot ring antenna works as follows.

TEM - from the first input, the slot-type antenna is distributed along the first coaxial feeder 6 to the power divider 5, where it is distributed with identical amplitudes and phases along the lengths of 4 coaxial cables to the exciter pins 3. High-frequency current oscillations in the excitatory pins x 3 excitation is in-phase the radial electromagnetic field in the annular gap 1 and the in-phase radial currents on the inner surface of the ring resonator 2 and on the outer side of the horizontal screen, which is formed by a metal case 17 the vessel’s flange 16 and the conductors of the multiple helix 8; This causes the emission of an electromagnetic wave

linear polarization. The radiation pattern (DF) of the radiation has zero in the direction of the axis OZ, perpendicular to the horizontal screen and the vector E contains only one

component of the polar coordinate ..

TEM wavelength propagated from the second input of the slotted ring antenna - high-frequency connector

S 15 on the second coaxial feeder 11 in-phase with equal amplitudes, excites the approaches of a multiple-running helix 8. Capacitor 14 allows. reduce reflection at the transition point

0 from the second coaxial feeder 11 4 to the approaches of the multiple-run helix 8, Next, the electromagnetic wave propagates along the approaches of the multiple-run i helix 8 to the active region, where

5 coil length is equal to two wavelengths. In the active region, intense emission of an electromagnetic wave occurs, and outside the active region the amplitude of the propagating

The 0 wave falls almost to zero. The DN radiation has zero in the direction

OZ axis, polarization of b-lis to circular.

The presence of multiple. the spiral 8, which is a part of the horizontal screen for the annular gap 1, leads to the expansion of the frequency range according to the agreement of the first input of the slit circular antenna. The presence of a multiple spiral 8 above a cylindrical resonator 9 connected by a second coaxial feeder 11 to a second input of a slit ring antenna allows the frequency range of the slit ring antenna to further expand and generate circularly polarized electromagnetic radiation.

Claims (1)

Invention Formula A slit ring antenna containing an annular slot in a horizontal screen, to which a ring resonator is attached below, having an integral solid bottom wall, and a first coaxial feeder, which is the first antenna input, 5, in order to extend the frequency range and the formation of electromagnetic radiation of circular polarization, part of the horizontal 312642574 screen, located inside the hole, evenly spaced around the ring resonator, performed by the ring resonator and soina in the form of a n-thru arithmetic single coaxial cuspiral segments, connected at the center with a center-white equal to the electric length the main conductor of the inputted by the corresponding outputs of the input coaxial feeder, owner of power divider, whose input is with the second inlet, the slot-hole ring is unified with the first coaxial fideantenna, and the excitatory pin is introduced.