RU148194U1 - DIRECTED SUBSCRIBER ANTENNA (OPTIONS) - Google Patents

Abstract

1. Directional subscriber antenna, consisting of an active loop vibrator, the shoulders of which are made of flat conductors, at least two passive vibrators, one of which is a reflector, and the rest are directors, of a coaxial input / output, a balancing device, carrying a traverse, protective casing, characterized in that the active loop vibrator is additionally equipped with at least one jumper and one auxiliary polygon, and conductors, jumpers, auxiliary polygons of the active vibrator Ator, and the L-shaped conductor, and jumpers auxiliary polygons form a single balun detal.2. The directional subscriber antenna according to claim 1, characterized in that the balancing device is formed by at least three flat L-shaped conductors that connect the coaxial input / output and reflector to the shoulders of the active vibrator. The directional subscriber antenna according to claim 1, characterized in that the coaxial input / output is fixed to the reflector at a point of zero potential. Directional subscriber antenna according to claim 1, characterized in that the reflector is made of at least one conductive plate. The directional subscriber antenna according to claim 1, characterized in that it is additionally equipped with a stop for connecting two additional polygons. A directional subscriber antenna according to claim 1, characterized in that one of the auxiliary ranges is parallel to the traverse. Directional subscriber antenna, consisting of an active loop vibrator, the shoulders of which are made of flat conductors, at least two passive vibrators

Description

A group of utility models relates to antenna technology and can be used as a subscriber antenna of wireless access and cellular networks.

The prior art "Yagi" antenna No. US 6307524 from 01/18/2000, containing a printed circuit board, an active element printed on a circuit board, printed directors and reflector, microstrip transmission line and coaxial cable. A coaxial cable feeds the active element through a microstrip transmission line. In addition, the distances between the active element and the remaining passive elements are selected so that an optimal balance is achieved between the gain and repeatability in the manufacture of the antenna. The printed antenna has a partially folded, conductive element in the form of a J, which is grounded at the midpoint of the active element. The described configuration allows you to attach a coaxial cable directly to the microstrip transmission line without the use of a balancing device.

The disadvantage of this antenna is the presence of a dielectric substrate bearing the antenna elements, which reduces the antenna efficiency.

Also known is a loop antenna No. 2174272 dated July 6, 1999 (published September 27, 2001) containing a reflector, a vibrator and directors that are mounted coaxially in series on a common dielectric rod, isolated from each other, the reflector, vibrator and directors are made in the form of grouped pairs of frame elements interconnected, and each of the frame elements contains L-shunts in the plane of its internal dimensions, which determine the symmetry and coordination. The reflector contains long lines connecting the in-phase midpoints of the L-shunts with the sections of the current antinode in each of the frame elements, while the frame elements of the vibrator are connected in series, and the frame elements of the reflector and directors are connected in parallel.

The disadvantages of this antenna are:

- high design complexity through the use of complex vibrators;

- the absence of a balancing device, L-shunts cannot provide sufficient symmetry;

- the use of a dielectric traverse, which is a carrier, as a result of which the design is complicated.

The closest in technical essence is the Yagi-Uda antenna, described in the patent “One-piece Yagi-Uda antenna and process for making the same” No. US 6483476 dated 12/12/2000, which is a multi-element antenna consisting of an array of directors, a reflector bearing traverse and a loop vibrator, which is active, while all elements are made of a single sheet of metal. The loop active antenna element is formed by bending the ends of the active element during stamping or at a separate bending stage. In an alternative embodiment of the invention, the antenna traverse is made long enough to quickly connect a fairing to it. The disadvantages of this technical solution are the lack of a balancing device in the antenna, which leads to the leakage of the RF current to the braid of the coaxial cable, and as a result, distortion of the radiation pattern.

The task to which the claimed group of utility models is directed is to create a directional subscriber antenna having high manufacturability in production.

The technical result is a simplification of the design, increasing the manufacturability of production.

These technical results are achieved by performing a directional subscriber antenna, consisting of an active loop vibrator, the shoulders of which are made of flat conductors, at least two passive vibrators, one of which is a reflector, and the rest are directors, of a coaxial input / output, balancing device, bearing traverse, a protective casing, and the active vibrator is additionally equipped with at least one jumper and one auxiliary training ground, and conductors, jumpers, in pomogatelnye polygons active vibrator, and the L-shaped conductor, and jumpers auxiliary polygons balun form a single piece. The balancing device is formed by at least three flat L-shaped conductors that connect the coaxial input / output and reflector to the shoulders of the active vibrator. The antenna can be additionally equipped with a stop for connecting two additional polygons. The reflector can be made of at least one conductive plate, and the coaxial input / output is mounted on the reflector at the point of zero potential.

A part formed by conductors, jumpers, auxiliary polygons of an active vibrator, as well as L-shaped conductors, auxiliary polygons and jumpers of a balancing device, is made of sheet metal with subsequent flexible formation of the required position of all elements.

In the second embodiment, the directional subscriber antenna, the technical result is achieved by making the traverse and directors in the form of flat conductors, and the traverse, directors, conductors and jumpers of the active vibrator, L-shaped conductors and auxiliary polygons of the simulating device form a single whole part.

The part formed by the traverse, directors, conductors and jumpers of the active vibrator, L-shaped conductors and auxiliary polygons of the simulating device is made of sheet metal and then flexible to form the required position of all elements, and the reflector is made separately from the metal sheet in an identical processing way.

The essence of the utility model is illustrated by the following figures:

Figure 1 - General view of the antenna, where:

1 - reflector;

2 - bearing traverse;

3 - coaxial input output;

4 - directors;

5 - uncut part of the loop vibrator (conductor);

6 - jumper (conductor);

7, 8 - shoulders of the cut part of the loop vibrator (conductors);

9, 10, 11 - conductors of a balancing device;

12, 13 - auxiliary polygons.

14 - the central contact of the coaxial input / output;

Figure 2 - part of the antenna depicted in isometry, where:

1 - reflector;

5 - uncut part of the loop vibrator;

6 - jumper;

7, 8 - shoulders of the cut part of the loop vibrator;

9, 10, 11 - conductors of a balancing device;

12, 13 - auxiliary polygons.

Figure 3 - the workpiece of the antenna part obtained by combining the elements of a balancing device and a loop vibrator, where:

5 - uncut part of the loop vibrator;

6, 15, 16 - jumpers;

7, 8 - shoulders of the cut part of the loop vibrator;

9, 10, 11 - conductors of a balancing device;

12, 13, - auxiliary polygons.

Figure 4 is a variant of the workpiece of the antenna part obtained by combining the elements of a balancing device and a loop vibrator, where:

5 - uncut part of the loop vibrator;

6, 15, 16 - jumpers;

7, 8 - shoulders of the cut part of the loop vibrator;

9, 10, 11 - conductors of a balancing device;

12, 13, 17, 18, 20 - auxiliary polygons;

19 - emphasis.

Figure 5 - option blank parts of the antenna (refers to the second embodiment of the directional subscriber antenna)

2 - bearing beam

4 - directors

5 - uncut part of the loop vibrator (conductor);

6, 15, 16 - jumpers

7, 8 - shoulders of the cut part of the loop vibrator;

9, 10, 11 - conductors of a balancing device;

12, 13, 17, 18, 20 - auxiliary polygons;

19 - emphasis.

The first embodiment of a directional subscriber antenna consists of a reflector 1, a bearing beam 2, coaxial input / output 3, several directors 4, a loop vibrator (not highlighted in the figures), a balancing device (not highlighted in the figures), and a protective dielectric casing (not shown in the figures shown). The cut part of the loop vibrator is formed by conductors 7 and 8 and connected to the uncut part 5 by means of jumpers 6. The active vibrator is attached to the traverse 2 at the center of the conductor 5, at the point of zero potential. The L-shaped conductors of the balancing device are connected to the cut part of the active vibrator, while the conductors 9, 11 are connected at one end to the conductors 7, 8 through jumpers 16, 15, respectively, and the other ends are connected to the reflector 1 through auxiliary polygons 12, 13 and have him electrical contact. The conductor 10 is connected at one end to the conductor 7 of the active vibrator via a jumper 15, and at the other end is connected to the central pin 14 of the coaxial input / output 3 by soldering or welding.

The reflector, active vibrator and balancing device are made of sheet metal with the same processing method.

A design feature of a directional subscriber antenna is that conductors 5, 7, 8, jumpers 6, 15, 16, conductors 9, 10, 11, auxiliary polygons 12 and 13 form one whole part made of sheet metal by stamping or cutting with subsequent flexible to form the desired position of all these elements. Ancillary polygons 17, 18, 20 and an emphasis 19 can be added to the part that combines the elements of the active vibrator and the balancing device, and after molding the entire part, the polygon 17 becomes parallel to one face of the beam 2 and fixed to it, and the polygons 18 and 20 spaced by an emphasis 19, bend into the plane of the reflector 1 and fix it at two additional points.

The second embodiment of a directional subscriber antenna consists of a reflector 1, a bearing beam 2, coaxial input / output 3, directors 4, a loop vibrator (not highlighted in the figures), a balancing device (not highlighted in the figures) and a protective dielectric casing (not shown in the figures ) The cut part of the loop vibrator is formed by conductors 7 and 8 and connected to the uncut part 5 by means of jumpers 6. The active vibrator is connected to the traverse 2 for the center of the conductor 5, at the point of zero potential and is perpendicular to it. L-shaped conductors of the balancing device are connected to the cut part of the active vibrator, while the conductors 9, 11 are connected at one end to the conductors 7, 8 through jumpers 16, 15, respectively, and the other ends are connected to auxiliary polygons 12, 13. The conductor 10 is connected at one end with the conductor 7 of the active vibrator through the jumper 15. Traverse and directors made in the form of flat conductors, conductors of the active vibrator, L-shaped conductors, auxiliary polygons and jumpers are combined into a separate whole a part made of sheet metal with subsequent bending to form the required position of all elements, in which the conductors 7 and 8, the jumpers 16, 15 are in the plane parallel to the plane of the conductor 5, and the jumpers 6 in the planes orthogonal to it and parallel to each other, L-shaped the conductors 9, 10, 11 are parallel to the jumpers 6, and the auxiliary polygons 12, 13 are orthogonal to them and parallel to the reflector plane at the junction, polygon 17 becomes a continuation of the crosshead 2 and is located on the same plane with it, and polygons 18 20, spaced abutment 19, are folded into the plane of the reflector 1 and it is fixed at two additional points. The reflector 1 is made separately from a sheet of metal by the identical processing method and is located in the plane perpendicular to the traverse 2. Polygons 12, 13 are attached to the reflector 1, a coaxial input / output 3 is attached to the reflector, the central contact 14 of which is connected to the free end of the L-shaped conductor 10 by soldering or welding.

The above allows us to conclude that the claimed group of utility models characterizes new constructive solutions, the totality of the features of which is not known from the prior art, therefore, the claimed device meets the criterion of "novelty."

The directional subscriber antenna works as follows:

When applying the RF signal to the strip transmission line formed by the conductors 10 and 11 of the balancing device through the coaxial input / output 3, the active vibrator is excited and forms an electromagnetic field around itself. In passive vibrators located in close proximity, EMF occurs, passive vibrators are excited and form their own fields around themselves. The relations between the amplitudes and the phases of the vibrator fields are such that the antenna radiates electromagnetic energy mainly in one direction (in the positive direction of the 0Z axis). The active vibrator is a Pistolkors loop vibrator, the balancing device is a short-circuited bridge, the conductors 9 and 11 are its shoulders. The antenna is matched to the coaxial transmission line by selecting the wave impedance and the electrical length of the strip line of the balancing device, as well as by selection of the geometric dimensions of the loop vibrator.

The proposed design of a directional subscriber antenna can be manufactured using well-known structural parts using known technologies. The possibility of industrial use of the claimed devices allows us to conclude that it meets the criterion of "industrial applicability".

The described design options allowed to obtain the following main characteristics when implementing the antenna in the frequency range 1920 ÷ 2180 MHz:

- standing wave coefficient (SWR) at the input of the antenna in variants matching with the coaxial line of 50 Ohms or 75 Ohms no more than 1.5;

- gain in the indicated frequency range 15.0 ÷ 17.0 dB in relation to the isotropic emitter;

- the level of side radiation is not more than - 12 dB;

- the dimensions of the antenna are 850 mm * 93 mm * 63 mm.

Claims (10)

1. A directional subscriber antenna, consisting of an active loop vibrator, the shoulders of which are made of flat conductors, at least two passive vibrators, one of which is a reflector, and the rest are directors, of a coaxial input / output, a balancing device, carrying a beam, a protective casing, characterized in that the active loop vibrator is additionally equipped with at least one jumper and one auxiliary polygon, and conductors, jumpers, auxiliary polygons of the active vibrator Ator, and the L-shaped conductor, and jumpers auxiliary polygons balun form a single item. 2. The directional subscriber antenna according to claim 1, characterized in that the balancing device is formed by at least three flat L-shaped conductors that connect the coaxial input / output and reflector to the shoulders of the active vibrator. 3. The directional subscriber antenna according to claim 1, characterized in that the coaxial input / output is fixed to the reflector at a point of zero potential. 4. The directional subscriber antenna according to claim 1, characterized in that the reflector is made of at least one conductive plate. 5. The directional subscriber antenna according to claim 1, characterized in that it is additionally equipped with a stop for connecting two additional polygons. 6. The directional subscriber antenna according to claim 1, characterized in that one of the auxiliary ranges is parallel to the traverse. 7. Directional subscriber antenna, consisting of an active loop vibrator, the shoulders of which are made of flat conductors, at least two passive vibrators, one of which is a reflector, and the rest are directors, of a coaxial input / output, a balancing device, carrying a beam, a protective casing, characterized in that the active loop vibrator is additionally equipped with at least one jumper and one auxiliary training ground, and the traverse, directors, conductors and jumpers of the active vibrator a, L-shaped conductors and auxiliary polygons of the balancing device form a single whole part. 8. The directional subscriber antenna according to claim 2, characterized in that the balancing device is formed by at least three flat L-shaped conductors that connect the coaxial input / output and reflector to the shoulders of the active vibrator. 9. The directional subscriber antenna according to claim 2, characterized in that the coaxial input / output is fixed to the reflector at a point of zero potential. 10. The directional subscriber antenna according to claim 2, characterized in that the reflector is made of at least one conductive plate.

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