ES2539524B1 - Antenna - Google Patents

Abstract

The present invention relates to an antenna, in particular for receiving television, radio and / or data signals comprising at least one main central bar, a reflector and a support that joins the main central bar with the reflector with the support being constituted by a first opening and a second opening where bars of the reflector are introduced where the support has mechanisms that by means of a first activation fix the bars in the first opening and in the second opening and through a second activation of the mechanisms release the bars in the first opening and the second opening.

Description

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DESCRIPTION

Antenna.

The present invention relates to an antenna, in particular for receiving television, radio and / or data signals according to the preamble of revindication 1.

With the implantation of Digital Terrestrial Television (DTT) signals, new types of antennas were developed for the reception of said digital signals. Subsequently, with the implementation of high definition television, antennas were developed with characteristics consistent with the new types of television signals, such as those described in the Spanish patents ES2334618B2, ES2336878B1 and ES2338965 owned by the applicant.

The mentioned inventions show antennas that have characteristics according to the new types of digital signals for high definition.

The antennas currently available in the market have, due to their size, packaging problems for their transport, as well as problems for assembly and installation since these antennas are installed in places of difficult access such as roofs, masts, turrets, etc., where simplicity and antenna manageability are elements of first importance.

Likewise, said antennas do not contemplate the reduction of the frequency band used for the Digital Terrestrial Television (DTT) service. The so-called Digital Dividend is that as of January 1, 2015, the frequency band between 790 MHz and 860 MHz will no longer be used by the DTT service and will be used for Mobile Broadband signals.

As a result, the reception bandwidth requirement of television antennas changes considerably. On the one hand a smaller bandwidth is required and on the other a high degree of rejection of the signals that are going to use the 790 MHz to 860 MHz band is required to avoid interference in the reception of television signals.

The objective of the present invention is the realization of an antenna that presents on the one hand an easy packing for its transport, as well as a great manageability and simplicity for its installation and on the other a high rejection of the signals located in the 790 MHz band at 860. MHz corresponding to Mobile Broadband signals.

This objective is achieved with an antenna, in particular to receive television, radio and / or data signals as defined in the claims.

The invention has a plurality of advantages.

In an example according to the invention, the antenna, in particular for receiving television, radio and / or data signals, comprises at least one armature, a reflector, an anterior radome and a posterior radome, where the armor is formed by at least three coplanar bars, a main central bar and two secondary bars, an upper secondary bar and another lower secondary bar, and is characterized in that the posterior radome forms a first mechanism, the anterior radome forms a second

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mechanism, and the first mechanism and the second mechanism cooperate in such a way that during the antenna installation process, the first mechanism and the second mechanism change the position of the bars from a first installation position, where the bars are parallel, to a second installation position, where the secondary bars are oblique with respect to the main central bar and divergent with respect to the main central bar on one side and converging on the opposite side.

This has the advantage of simplifying the installation process of the antenna and reducing the volume of the antenna, so that it allows a more compact and reduced packing of the antenna, thus allowing easier transport of the antenna.

In another example according to the invention in the antenna, in particular to receive television, radio and / or data signals the first mechanism has glues through which rods fixed to the secondary bars are moved, which drag the bars Secondary from the first installation position to the second installation position.

In another example of an antenna according to the invention, the second mechanism has turning elements attached to the bars and whose turning point is located in the central bar.

This has the advantage of simplifying and facilitating the transformation process of the antenna from a first installation position to a second installation position.

In another example of an antenna according to the invention, the first mechanism and / or the second mechanism have at least one fixing element of the second installation position.

In another example of an antenna according to the invention the fixing element of the first mechanism is constituted by a first stop, for the movement of the rod of the upper secondary bar and / or a second stop for the movement of the rod of the lower secondary bar .

In another example of an antenna according to the invention, the fixing elements of the second mechanism are constituted by a first turning stop and / or a second turning stop.

This has the advantage of securing the second installation position by preventing the antenna from returning to the first installation position by chance.

In another example according to the invention the antenna, in particular for receiving television, radio and / or data signals comprises at least one main central bar, a reflector and a support that joins the main central bar with the reflector, the support being constituted by a first opening and a second opening where bars of the reflector are introduced and is characterized in that the support has mechanisms, which by means of a first activation fix the bars in the first opening and in the second opening and through a second activation of the mechanisms, release the bars in the first opening and in the second opening.

This allows the assembly and removal of the antenna reflector allowing easy folding for storage and transport of the antenna.

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In another example of antenna according to the invention the mechanisms are constituted by rotating fins.

In another example of antenna according to the invention the rotating fins that constitute the mechanisms fix the bars by pressure. This allows to keep the reflector firm in its mounted position.

For a better understanding of the invention, an antenna is described by way of non-limiting example, in particular for receiving television, radio and / or data signals according to the invention based on the drawings listed below:

Figure 1 shows an antenna according to the invention.

.- Figure 1.A shows the first installation position A of an antenna according to the invention.

.- Figure 1.B shows the second installation position B of an antenna according to the invention.

Figure 2 shows in detail a rear radome of an antenna according to the invention.

Figure 3 shows in detail an anterior radome of an antenna according to the invention.

Figure 4 shows a dipole of an antenna according to the invention.

Figure 5 shows a junction box and a support piece of an antenna junction box according to the invention.

Figure 6 shows a support of a reflector of an antenna according to the invention.

As can be seen in Figure 1, the antenna according to the invention is constituted by a reinforcement formed by three bars, a main central 1 and two secondary ones, upper 2 and lower 3, a rear radome 4, an anterior radome 5 and a reflector 6 .

The bars 1, 2 and 3 of the reinforcement are generally of different lengths, coplanar and constituted by tubular profiles, preferably of aluminum.

Said bars 1, 2 and 3 have a plurality of rods 7 mounted along the structure in a direction perpendicular to the plane defined by said bars. Said rods 7 constitute the director elements 71 and the parasitic element 72 of the antenna. The director elements 71 are responsible for directing the received signal towards an active element or dipole 13 of the antenna. The parasitic element 72 increases the bandwidth of the active element or dipole 13 and consequently of the antenna. The upper secondary bar 2 has a greater number of directors 71, the lower secondary bar 3 being the one with a smaller number of directors 71. The central bar 1 also has the directors 71, a parasitic element 72.

The bars 1, 2 and 3 are physically joined in their back part by the rear radome 4 in which they are inserted and in their middle part by the previous radome 5 which they cross. The central bar 1 passes through the rear radome 4 in a bar portion on which a support 8 is mounted on which the reflector 6 is attached.

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Rods 7 of bars 2, 3 pass through the posterior radome 4 through glues 412 and 413, likewise rods 7 of bars 1, 2, 3 pass through the anterior radome 5 through holes 571.

The reflector 6 is constituted by two panels 9 and 10 of rods 11 placed in an oblique position with respect to the central bar 1 on the support 8. Said rods 11 have at their ends of corners 12 that join them together. Said rods 11 pass through bars 111 that fix the reflector to the support 8.

The dipole 13 and a connection box 14 where an impedance adapter circuit 15 and an amplification circuit 16 (see Figure 5) are located in the rear radome 4 are located.

The anterior radome 5 forms a second mechanism and the posterior radome 4 forms a first mechanism and the first mechanism and the second mechanism cooperate in such a way that during the antenna installation process the first mechanism and the second mechanism change the position of the bars 1, 2, 3 from a first installation position A (Figure 1A) where the bars 1,2, 3 are parallel to each other, to a second installation position B (Figure 1B) where the secondary bars 2, 3 are oblique with respect to the main central bar 1 and divergent with respect to the main central bar 1 on one side and converging on the opposite side.

As can be seen in Figure 1B, in a second installation position B, coinciding with the use position of the antenna according to the invention, the secondary bars 2 and 3 are slightly oblique with respect to the central bar 1, the bars 2 being and 3 diverging from the central bar 1 on one side and converging on the opposite side. On the divergent side of the bars, the upper secondary bar 2 protrudes longitudinally from the central bar 1 and the lower secondary bar 3 is reduced longitudinally with respect to the central bar 1, the antenna forming a stepped structure.

On the divergent side the three bars 1, 2 and 3 cross the anterior radome 5 and on the convergent side the three bars 1, 2 and 3 are introduced in the posterior radome 4. The central bar 1 crosses the posterior radome 4 in a portion of bar on which the support 8 is mounted on which the reflector 6 is attached. The antenna is fixed to a vertical mast 17 by an auxiliary clamp 18 by the free end of the central bar 1.

The first mechanism constituted by the posterior radome 4 has oblique glands 412 and 413 with respect to the central bar 1 where rods 7 respectively belonging to the upper secondary bar 2 and the lower secondary bar 3 are located. Said rods move through the guides 412 and 413 in the opposite direction between them, from a first installation position A of the antenna (Figure 1A) to a second installation position B of the antenna (Figure 1B).

Likewise, the second mechanism constituted by the previous radome 5 has turning elements 57 for the rotation of said radome 5 from a first installation position A of the antenna (Figure 1A) to a second installation position B of the antenna (Figure 1 B). Said turning elements 57 are constituted by holes 571 through which rods 7 of bars 1,2 and 3 pass through radome 5.

The change of position of the bars 1, 2, 3 from a first installation position A where the bars 1, 2, 3 are parallel to each other, to a second installation position B

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where the secondary bars 2, 3 are oblique with respect to the main central bar 1 and divergent with respect to the main central bar 1 on the one hand and converging on the opposite side is performed as described below.

In the first installation position A of the antenna, the rods 7 of the bars 2 and 3 located in those of glues 412 and 413, are respectively in their positions farthest and closest to the previous radome 5 (Figure 1A). Likewise in the first installation position A, the anterior radome 5 is in an oblique and coplanar position with respect to the central bar 1 of the antenna armor, so that the hole 571 corresponding to the rod 7 of the bar 2 is the closest to the posterior radome 4 and the hole 571 corresponding to the rod 7 of the bar 3 is the furthest from the posterior radome 4 (Figure 1A).

From the first installation position A, by means of a manual drive consisting of a slight movement of separation of the bars 2 and 3 by their divergent side, the rods 7 located in the glues 412 and 413 move through said glues in the opposite direction . The rod 7 located in the glutton 412 moves from the furthest point of the gluttony 412 to the anterior radome 5 to the closest point of the gluttony 412 to the anterior radome 5, on the contrary the rod 7 located in the gluttony 413 moves from the closest point of the glutton 413 to the anterior radome 5 to the furthest point of the gluttony 413 to the anterior radome 5. In this displacement the rods 7 located in the glues 412 and 413 respectively drag the bars 2 and 3 in opposite directions towards outside the rear radome 4 the bar 2 and into the rear radome 4 the bar 3. This displacement of the bars 2 and 3 rotates the rear radome 5 with respect to the hole 571 corresponding to the rod 7 of the central bar 1 as a consequence of the Pushing of the rods 7 of the bars 2 and 3 over their respective holes 571. As a consequence of this rotation, the anterior radome 5 is perpendicular to the central bar which causes the antenna to pass to the second to installation position B (Figure 1B).

The first installation position A corresponds to the folding state of the antenna armor used for the storage and transport of the antenna (Figure 1A). In said position, the panels 9 and 10 of the reflector 6 are removed from the support 8, leaving the antenna in a storage and transport situation. On the contrary, in case of installation, the panels 9 and 10 of the reflector 6 are inserted in the support 8 and then it is operated on the antenna leading to a second installation position B. The second installation position B corresponds to the unfolded state of the antenna armor that corresponds to the antenna utilization position (Figure 1B).

Figure 2 shows the rear radome 4 of the antenna according to the invention.

As can be seen in said figure, the rear radome 4 is constituted by two covers 41 and 42, so that they are closed on bars 1, 2 and 3 of the antenna structure, by means of medium openings 431, upper 432 and lower 433 respectively in its previous part. The cover 41 has through holes 45 facing offshoots 46 arranged in the other cover 42. In said rods there are housings for closing the covers 41 and 42. The covers 41 and 42 have holes 47 which extend in length. perforated stems 48 through which the rods 7 corresponding to the sections of bars 1, (Figure 1) cross the rear radome 4. Also the covers 41 and 42 have glues 412 and 413 in which rods 7 of bars 2 and 3 respectively.

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Likewise, the rear radome 4 has a cavity 49 in its rear area in which an assembly formed by the dipole 13, the junction box 14 and the support 19 (see Figure 5) is housed. The rear radome 4 has two bolts 491 for anchoring said assembly.

The previous radome 5, as shown in Figure 3, consists of two covers 51 and 52 that are closed on the bars 1, 2 and 3 of the structure by means of a run opening 53. Said run opening has turning stops 531 and 532, which act respectively on the bars 1, 2 in the second installation position B of the antenna avoiding the rotation of the previous radome 5 and therefore the return to the installation position A of the antenna. A third turning stop 533 disposed in the opening 53 acts on the bar 3 by fixing the maximum opening of the bars 2 and 3 in the second installation position B of the antenna. The cover 51 has through holes 55 facing threaded rods 56 disposed in the other cover 52. In said threaded rods 56, closing screws of the covers 51 and 52 are housed. The covers 51 and 52 have holes 571, which constitute the turning elements 57, which extend into perforated rods 58 through which the rods 7 corresponding to the bar sections 1, 2 and 3 cross the anterior radome 5.

As can be seen, there are elements for fixing the position B of the antenna both in the first mechanism and in the second mechanism. In the first mechanism it is constituted by the corresponding ends of the glues 412 and 413 that act as a first stop for the movement of the rod 7 of the upper secondary bar 2 and / or a second stop for the movement of the rod 7 of the lower secondary bar 3 respectively.

Likewise, in the second mechanism, the fixing elements of position B 6 are constituted by a first turning stop 532 and / or a second turning stop 531.

Figure 4 shows in detail the dipole 13 of the antenna which is constituted by two pieces 131. Each of the pieces 131 is constituted by a profile 132 in the form of "U" and by a profile 133 in the form of "V "facing both of them in their open part, the profile 133 contained within the profile 132 and galvanically connected thereto at two connection points 134. The profile 132 has a fin 135 at its base. Said fin 135 has at least one perforation 136 for dipole connection. In addition, the profile 132 has a perforation 137 for fastening the dipole 13 to the pivot 197 of the support 19 (see figure 5).

In Figure 5, the junction box 14 can be seen, which is attached to a support 19. The box 14 is constituted by a rectangular body or base 141 and a cover 142 which are closed by pressure. The base 141 has bolts 143 on which an electronic circuit is placed, generally constituted by an impedance adapter circuit 15 and an amplification circuit 16, it also has two holes 144 which face two pivots 191 belonging to the support 19. Said pivots 191 have internal holes through which a connection piece 196 is introduced which establishes the electrical connection between the dipole 13 and the impedance adapter circuit 15 and / or the amplification circuit 16 housed in the box connections 14 and serving at the same time as securing the connection box 14 to the support 19. The connection box 14 also has at its base 141 a connector 145 which constitutes the connection element of the antenna.

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The cover 142 has two side walls of two flanges 146 which make galvanic contact with the central bar 1 once the dipole assembly 13, connection box 14 and support 19 are mounted in the cavity 49 of the rear radome 4. This contact galvanic performs the grounding of the connection box 14 optimizing its shielding.

As can be seen in Figure 5, the support 19 of the junction box 14 is constituted by a bowl 192 topped on one of its walls by two arms 193 that extend longitudinally. Inside, the bowl 192 has two pivots 191 for holding the box 14 and a hole 194 through which the connector 145 of the connection box 14 leaves. On its side walls the bowl 192 has holes 195 where bolts 491 of the rear radome 4 (figure 2) penetrate for anchoring the support 19 to the rear radome 4.

The bowl 192 is extended in two arms 193 in each of which one of the two pieces 131 that make up the dipole 13 is located. These pieces 131 have holes 137 (see figure 4) in which the pivots 197 are inserted to the attachment of said parts to the arms 193 of the support 19.

The dipole assembly 13, junction box 14 and support 19, is located in the cavity 49 of the rear radome 4, being fixed to said rear radome 4 by bolts 491 and the holes 195 of the support 19.

Figure 6 shows the support 8 of the reflector panel 9 and the reflector panel 10 that make up the reflector 6 (Figure 1).

As can be seen in Figure 6, the support 8 of the reflector 6 is constituted by a box 81 in the form of a half moon, constituted by two covers 82 and 83 that form when a first opening 84 and a second opening 85 are closed in which They introduce the bars 111 of the panels 9 and 10 of the reflector 6. Said covers 82, 83 have cavities 821 where rods 11 of the panels 9 and 10 of the reflector 6 are introduced. Also in its closed position the covers 82 and 83 define a channel 86 through which the main central bar 1 of the antenna passes. The support 8 is connected to the main bar 1 by means of a screw 87 that crosses a hole 88 disposed for this purpose in the cover 82 of the box 81 and after passing through the main bar 1 a threaded hole 881 disposed in the cover 83 is fixed of the box 81. The channel 86 has a cross section according to the cross section of the main bar 1 so that it is attached thereto.

Likewise, the support 8 has mechanisms 89 that by means of a first activation fix the bars 111 in the first opening 84 and in the second opening 85 and through a second activation of the mechanisms 89 release the bars 111 in the first opening 84 and in the second opening 85. Said mechanisms 89 are constituted, as can be seen in Figure 6, by rotating fins 93 that fix the bars 111 of the panels 9 and 10 of the reflector 6 in the first and second opening 84, 85 by pressing. Swiveling fins 93 are constituted by a turning hole 891 in which pivots 90 arranged for this purpose are introduced next to the first and second opening 84, 85, a preferably circular pressure element 892 and an actuating lever 893. Said levers of actuation 893 protrude from the case 81 at its rear through openings 91 arranged for this purpose.

The bars 111 of the panels 9 and 10 of the reflector 6 are introduced in the first and second opening 84, 85 of the support 8, thus defining the positions of said

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panels 9 and 10. Through a first activation of the mechanisms 89 the bars 111 are fixed by pressing the first and second opening 84, 85, introducing the rods 11 of the panels 9 and 190 into the cavities 821. The first activation of the mechanisms 89 it is produced as a result of a first rotation of the rotating fins 93, on the pivots 90 caused by the pressure on the bars 111 of the pressure element 892.

By means of a second activation of the mechanisms 89 produced by a second rotation of the rotating fins, on the pivots 90, the pressure element 892 ceases to exert pressure on the bars 111 being these in disposition to be removed from the first and second opening 84 , 85.

The first and second activation of the mechanisms 89 occurs as a result of the actuation of the actuating lever 893.

A stop 92 blocks the actuating lever 893 after the first activation of the mechanisms 89 thus avoiding a second accidental activation of said mechanisms 89.

Reference List

1. - Main central bar

2. - Upper secondary bar

3. - Lower secondary bar

4. - Back radome

5. - Previous radome

6. - Reflector

7. - Rods

71. - Director elements

72. - Parasite element

8. - Support

81. - Box

82. - Cover

821.- Cavities

83. - Cover

84. - First opening

85. - Second opening

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86. - Channel

87. - Screw

88. - Hole

881.- Threaded hole

89. - Mechanism

891. - Turning holes

892. - Pressure element

893. - Drive lever

90. - Pivots

91. - Openings

92. - Stop

93. - Swivel fins

9. - Reflector panel

10. - Reflector panel

11. - Rods

111.- Reflector Bars

12. - Cantoneras

13. - Dipole

14. - Junction box

15. - Impedance adapter circuit

16. - Amplification circuit

17. - Vertical mast

18. - Auxiliary clamp

19. - Support

41.- Rear radome cover

412.- Gluttony

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413

42

431

432

433

Four. Five.

46.

47

48.

49.

491.

51.

52

53.

531.

532

533

55.

54

57.

571.

58.

131.

132.

133

134.-

Gluttony

Rear radome cover Medium opening Upper opening Lower opening Through holes Stems Holes

Cavity perforated stems

Anchor bolts Front radome cover Previous radome cover Openings

Turn stop Bar 1 Turn stop Bar 2 Turn stop Bar 3 Through holes Threaded rods Turn elements Holes

Perforated stems Dipole parts Profile in "u"

Profile in "v"

Connection points

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135. - Fin

136. - Perforation for dipole connection

137. - Perforation for holding the dipole

141. - Rectangular body or base

142. - Cover

143. - BuIones

144. - Holes

145. - Connector

146. - Pestanas

191. - Pivots

192. - Bowl

193. - Arms

194. - Hole

195. - Holes

196. - Connection piece

197. - Pivots

Claims (2)

ES 2 539 524 A1 1. Antenna, in particular for receiving television, radio and / or data signals comprising at least one main central bar (1), a reflector (6) and a support (8) that 5 joins the main central bar (1) with the reflector (6) with the support (8) consisting of a first opening (84) and a second opening (85) where bars (111) of the reflector (6) are introduced characterized by that the support (8) has mechanisms (89) that by means of a first activation fix the bars (111) in the first opening (84) and in the second opening (85) and through a second activation of the mechanisms (89) 10 release the bars (111) in the first opening (84) and in the second opening (85). 2. Antenna according to claim number 1 characterized in that the mechanisms (89) are constituted by rotating fins (93). 15 3. Antenna according to claim number 2 characterized in that the rotating fins (93) which constitute the mechanisms (89) fix the bars (111) by pressure.