RU2465696C1 - High bandpass response shortened horizontal dipole - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: dipole has symmetrically lying arms. Conductors of the arms lie on the edges of biconical figures. Each arm consists of several biconical figures. The biconical figures are connected to each other without forming an electric contact. A biconical figure is formed by rhombus-like sections. The planes of the rhombus-like sections divide circle of the arms into equal arcs.

EFFECT: smaller longitudinal linear dimensions and wider operating bandwidth.

3 cl, 4 dwg

Description

The invention relates to antenna technology, mainly for operation in a wide frequency band of the decameter range.

Known simple tuners of a tuned type and, above all, a symmetrical horizontal vibrator (Markov G.T. Antennas. - M.: Gosenergoizdat, 1960, pp. 451-452), providing operation on fixed waves in a narrow frequency range.

The disadvantages of the known antenna are the need to change the size of the antenna with frequency tuning and its tuning.

Known curved antennas (Goncharenko IV, KB and VHF antennas. Part 2. Basics and practice. - M .: IP Radiosoft, Radio magazine, 2005, pp. 239-244), providing shortening of the shoulders of vibrators of full-size antennas in conditions cramped space.

The disadvantage of such antennas is the reduction in gain.

In turn, well-known log-periodic antennas are used to expand the operating frequency range (Aizenberg G.Z., Belousov S.P., Zhurbenko E.M., Kliger G.A., Kurashov A.G. Short-wave antennas. Edited by Eisenberg GZ - 2nd revised and enlarged edition; M .: Radio and communications, 1985, pp. 350-351), providing work in a wide range of frequencies.

The disadvantages of the known antennas are the complexity and high cost of both the construction and operation of such antennas.

Known birombic antenna (US Pat. RF No. 2157027, publ. 09/27/2000) for use in the decameter wavelength range. The antenna provides a reduction in the area occupied by the antenna due to the bending of the converging wires of rhombuses without contacts at the intersection points with a divergence further.

The disadvantage of such an antenna is, with a decrease in linear dimensions along the axis of the antenna, the increased transverse dimension of the web.

The closest technical solution adopted for the prototype is a horizontal band vibrator called dipole Nadenenko, with the conditional name - IOP (Aizenberg G.Z., Belousov S.P., Zhurbenko E.M., Kliger G.A., Kurashov A . G. Short-wave antennas. Edited by G. Eisenberg - 2nd revised and supplemented edition. - M .: Radio and communications, 1985, pp. 179-181). The antenna contains symmetrically arranged shoulders of wires located along the generatrix of the cylinders.

The disadvantages of the prototype antenna are its rather large longitudinal linear dimensions and not wide enough operating frequency band.

The technical result, to which the claimed invention is directed, consists in reducing the longitudinal linear dimensions and expanding the operating frequency band.

To achieve the specified technical result in a horizontal shortened vibrator of increased range containing symmetrically arranged shoulders of wires located along the generatrices of the three-dimensional geometric figure and connected to the power terminals and interconnected at the ends of the shoulders, the three-dimensional geometric figure is biconical, with each vibrator arm consisting of several similar figures arranged in a row and adjacent to each other and interconnected without the formation of an electric one contact. Moreover, each biconical figure is formed by rhomboid sections, and the planes of the rhomboid sections divide the circumference of the shoulders into equal arcs.

In contrast to the prototype with a three-dimensional cylindrical arm of the vibrator’s shoulders, in the proposed antenna the vibrator’s shoulders are made in the form of three-dimensional biconical figures connected adjacent to each other in a row, from wires connected only at the power terminals and at the ends of the shoulders. Due to this design, while maintaining the electric length of the vibrator, its longitudinal linear geometric dimensions are reduced.

While maintaining the lengths of the conductors in the shoulders of the vibrator due to their zigzag conduction, the linear linear dimensions of the shoulders are shortened and the proposed antenna with the same shoulder circumference as the prototype antenna (IOP) is 20-30% shorter.

The proposed vibrator is illustrated by the drawings shown in figures 1-4.

Figure 1 shows schematically a prototype vibrator (IOP), figure 2 is a schematic view of the proposed vibrator (VGUPD), figure 3 - radiation patterns and electrical parameters of the prototype vibrator, figure 4 - radiation patterns and electrical parameters proposed vibrator (VGUPD).

VGUPD contains a canvas of two shoulders 1, each of which consists of biconical figures 2 (figure 2). Each biconical figure 2 is formed by rhombic forming sections 3 made of conductors 4. The conductors 4 are interconnected at the power terminals 5 and the ends 6 of the arms 1. Moreover, in places 7 of the connection of the biconical figures 2 there is no electrical contact. To ensure the preservation of the shape of the shoulders 1 of the vibrators in limbo use additional rails 8. Position 9 indicates the circumference of the shoulders 1, which corresponds to the diameter of the circumference of the base of the biconical figures 2.

Vibrator horizontal shortened high range (VGUPD) works as follows.

Currents of equal amplitude and phase flowing through the conductors 4, for example, in the plane of rhomboid sections 3 located vertically, create in space the vertical and horizontal polarization components of the radio wave, but since the wires 4 diverge and converge, the vectors of the horizontal component will add up, and vertical - to compensate, providing horizontal polarization of the antenna. Due to this arrangement of conductors, less energy is expended on the radiation of the horizontal component, which can be seen from the analysis of gain factors (Fig. 4), when at the frequency of the average operating wavelength, the gain of the VGUPD antenna is 0.5 dB less than that of the VGD. The canvas of the shortened VGUPD antenna in the operating frequency band of the full-sized IOP antenna during operation is equivalent to the canvas of the IOP antenna, but with a smaller diameter. With increasing operating frequencies, the operation of the arms 1 of the VGUPD antenna changes, since not the arm 1 itself, but the linear segments of the zigzags of wires 4 become comparable with the lengths of quarters of the wavelengths of the operating frequencies. Due to the fact that they are placed symmetrically and at alternating angles and there are several pairs in the arms of 1, their influence at high frequencies becomes decisive, providing not only the directivity formation, but also an increase in the gain of the VGUPD antenna in the high-frequency part of the range. All this gives a gain in electrical parameters of the proposed technical solution, providing directivity in a wide frequency range. The working frequency band of the IOP antenna is limited due to the bifurcation of the radiation pattern in the high-frequency part of the range (Fig. 3) with the disruption of directional operation. In the antenna VGUPD in the entire frequency range, which is confirmed by the results of electronic modeling (figure 4), the directivity is preserved.

In addition, an additional positive result is, as follows from the analysis of tabular data (Figs. 3 and 4), the constancy of the growth of the gain in the frequency band from low to high, not only with an increase in absolute values, but also with an excess in comparison with the IOP antenna.

Industrial application of the proposed technical solution is a direct replacement of the IOP antennas with the device of rings with insulators and intermediate dielectric or electrically isolated additional longitudinal rails decoupled by insulators.

Claims (3)

1. The horizontal shortened vibrator of increased range, containing symmetrically arranged shoulders from wires located along the generatrices of the three-dimensional geometric figure and connected to the power terminals, and interconnected at the ends of the shoulders, characterized in that the three-dimensional geometric figure is biconical, with each vibrator arm consisting of several similar figures arranged in a row and adjacent to each other and interconnected without forming an electrical contact. 2. The vibrator according to claim 1, characterized in that each biconical figure is formed by rhomboid sections. 3. The vibrator according to claim 1, characterized in that the planes of the rhomboid sections divide the circumference of the shoulders into equal arcs.

Images