RU2709031C1 - Unified antenna module - Google Patents

Abstract

FIELD: antenna equipment.

SUBSTANCE: invention relates to antenna engineering and can be used as an independent dual-band and two-polarization antenna or as an element of an antenna array when constructing antenna systems of high efficiency, for example for telemetry of various objects. On flat metal screen high-frequency band radiators are installed in the form of square metal plates equipped with four blind slots, perpendicular to sides and located in their center, in-phase power is supplied in pairs to opposite slots, and the low-frequency band emitter is located above the high-frequency band radiators and is in form of a thin symmetrical vibrator, power supply to which is connected through a high-resistance quarter-wave transformer and a balancing conductor connected to one of the vibrator arms and the outer conductor of the input cable.

EFFECT: technical result consists in simplifying the design by reducing the number of emitters in both ranges, simplifying the design of the screen, increasing the gain in both bands, enlarging the band of operating frequencies.

1 cl, 4 dwg

Description

The invention relates to antenna technology and can be used as an independent dual-band and bipolar antenna or as an element of the antenna array when constructing antenna complexes of increased efficiency, for example, for telemetry of various objects.

Known in general terms, without specifying design features, dual-frequency, (dual-band) combined antenna arrays. (LI Ponomarev, VN Stepanenko. Scanning multi-frequency combined antenna arrays. Publishing House "Radio Engineering". Moscow 2009, p. 18, Fig. 1.3a and others) In the known antenna there is no possibility of working on two polarization, and, based on the known properties of the emitters used in it, it is not broadband enough.

The Zhemchug-M antenna complex (BY1.000.002) is known, in which emitters of the high-frequency (decimeter) range are made in the form of the open end of a hexagonal waveguide, and broadband in the long-wave (meter) range is achieved by increasing the thickness of the vibrators of this range. The antenna is structurally and technologically very complex.

Known unified antenna module (patent RU No. 2356136 HO1Q 01/38 from 05/20/2009) (prototype). It contains a metal box screen with an open upper plane, on the lower plane of which there are decimeter-wave radiators made in the form of square metal plates installed close to each other with a small gap between them, and meter-sized radiators are made in the form of 4 rods installed parallel to the lower plane of the box screen between its side walls above the emitters of the decimeter range. The disadvantages of this known solution are the reduced gain in both ranges due to the use of a box-shaped screen, the increased shadowing of the decimeter range radiation by meter radiators, the reduced gain in the decimeter range due to the dense arrangement of the emitters of this range and their increased shadowing by meter band radiators, complexity due to the increased number of emitters of both ranges.

The technical effect of the invention is to simplify the design by reducing the number of emitters in both ranges, simplifying the design of the screen, increasing the gain in both ranges, expanding the band of operating frequencies.

The technical effect is achieved by the fact that in the well-known unified antenna module containing a metal screen on which emitters of the high-frequency (for example, decimeter) range are mounted in the form of square metal plates connected by segments of coaxial cable of equal length with inputs of multi-channel power dividers (adders) installed on metal screen, and low-frequency (for example, meter) radiators mounted above the screen above high-frequency radiators, meta The front screen is made in the form of a square plate with a side about half the wavelength of the low-frequency range, square plates of high-frequency emitters have a side size of at least 0.3 of the maximum wavelength of the high-frequency range, they are equipped with narrow grooves up to 0.4 side of the high-frequency emitter located in the middle of each side of the square plate perpendicular to it, to the narrow grooves through segments of equal length of the coaxial cable, an input coaxial cable is connected, in driven through the center of the square plate to the metal screen and connected to one of the outputs of the divider, the distance between the centers of the high-frequency emitters is (0.4 ÷ 1.0) the maximum wavelength of the high-frequency range, the low-frequency emitters are made in the form of a thin symmetrical split vibrator, to to which the input coaxial cable is connected through a high-resistance quarter-wave transformer and a balancing device in the form of a conductor with a length of about a quarter of the wavelength astotnogo band attached by one end to the shoulder of a thin split vibrator, to which is connected a central high-resistance conductor quarterwave transformer and the other end to the outer conductor of the coaxial input cable and arranged parallel thereto at a distance therefrom at least 1/20 of the length of the conductor.

The drawings show:

FIG. 1 is a top view of a unified antenna module.

FIG. 2 is a side view of a unified antenna module.

FIG. 3 - high-frequency radiator - top view.

FIG. 4 - low-frequency radiator - side view.

In the drawings indicated:

1 - metal screen;

2 - a radiator of a high-frequency range;

3 - low-frequency emitter;

4 - square metal plate of the radiator of the high-frequency range;

5 - narrow grooves;

6 - segments of coaxial cable of equal length;

7 - input coaxial cable emitter high-frequency range;

8 - the shoulder of the low-frequency emitter;

9 - high resistance quarter-wave transformer;

10 - input coaxial cable of the low-frequency emitter;

11 - a balancing conductor.

The text describes the device antenna module for one polarization in each range. The construction of the antenna module for the second orthogonal polarization, combined in one opening with the first, is performed similarly. The mutual influence of polarizations on each other is absent.

The unified antenna module contains a metal screen 1, on which radiators of the high-frequency range 2 and radiators of the low-frequency range 3 are installed.

High-frequency emitters 2 can be installed on a metal pipe located in its center, or on insulators.

Low-frequency emitters 3 can be installed on two metal racks located near their middle or on insulating racks. The fasteners in the figures are not shown conditionally.

The emitter of the high-frequency range 2 is made in the form of a square metal plate 4, in which narrow grooves are made 5. To them, supply voltage is supplied through segments of coaxial cable 6 of equal length through the input coaxial cable 7. The emitter of the high-frequency range 2 is installed above the screen 1 at a height of up to a quarter of the working wavelength of the high-frequency range. With the indicated dimensions of the emitter of the high-frequency range 2 and the distances between them, an increase in the gain of the antenna module is achieved with a decrease in the number of emitters of the high-frequency range. Multichannel divider (adder) and cables connecting it to the emitters of high-frequency range 2 (not shown conditionally in the figures).

The low-frequency emitter 3 contains two arms 8, to which a high-resistance quarter-wave transformer 9 and an input coaxial cable 10 are connected, as well as a balancing conductor 11. With a screen size of 1 about half the wavelength of the low-frequency range, it is sufficient to have one low-frequency emitter 3 in its area, to obtain the full gain in the low-frequency range, corresponding to the area of the screen 1, which reduces the shading and energy dissipation of the high-frequency range by the low emitter frequency band 3. Further reduction in shading is achieved using a thin vibrator, and the expansion of its operating range achieved by introducing high-resistivity quarterwave transformer 9. The conductor 11 coaxial balun transformer 9 and the input cable 10 for joining them to the symmetrical radiator 3.

Claims (1)

A unified antenna module containing a metal screen on which high-frequency emitters are installed in the form of square metal plates connected by segments of a coaxial cable of equal length to the inputs of a multi-channel power divider (adder) mounted on a metal screen, and low-frequency emitters mounted above the metal screen above high-frequency emitters, characterized in that the metal screen is made in the form of a square plate from the side about half the wavelength of the low-frequency range, the square metal plates of the high-frequency emitters have a side size of at least 0.3 of the maximum wavelength of the high-frequency range, are provided with narrow grooves up to 0.4 side lengths of the square metal plate of the high-frequency range, located in the middle of each side of the square a metal plate perpendicular to it, an input coaxial is connected to two opposite narrow grooves through segments of a coaxial cable of equal length A cable led through the center of a square metal plate to a metal screen and connected to one of the outputs of the divider (adder), the distance between the centers of the high-frequency emitters is (0.4 ÷ 1.0) the maximum wavelength of the high-frequency range, and the low-frequency emitters are made in the form of a thin symmetrical split vibrator, to which the input coaxial cable is connected through a high-resistance quarter-wave transformer and a balancing device in the form of a conductor and about a quarter of the wavelength of the low-frequency range, connected at one end to the shoulder of a thin split balancing vibrator to which the central conductor of the high-impedance quarter-wave transformer is connected, and the other end to the outer conductor of the input coaxial cable and located at least 1/20 of the length of the conductor parallel to it .

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