DE202009002347U1 - antenna - Google Patents

Abstract

Antenna, in particular for receiving television, radio and / or data signals, comprising at least one dipole (13) consisting of two parts (131), a first of the two parts (131) being connected to earth, characterized in that the antenna has a further component (1) which is connected to ground and that the first part (131) of the dipole (13) is connected to the further component (1).

Description

The The present invention relates to an antenna, in particular for reception of television, radio and / or data signals according to the generic term of claim 1.

There are different antennas known, for example, the subject of Spanish patents 200002389 . 200002388 . 200002387 and 200002386 the applicant.

The Antennas that are currently in the market, are for designed to receive analog and / or digital signals. With The implementation of high definition television will involve antennas Properties needed, which correspond to the new television signals.

Of the The invention is therefore based on the object to provide an antenna, has the characteristics that are higher for the new digital signal types Correspond to definition.

These Task is solved by an antenna that in the claims is defined.

The Invention has a plurality of advantages.

The Antenna, in particular for the reception of television, radio and / or Data signals, has at least one dipole, which consists of two Parts, with a first of the two parts connected to ground is. The antenna has another component connected to ground is connected, wherein the first part of the dipole with the other Component is connected.

In order to the advantage is achieved that the connection path from the mass to the dipole shortened in comparison, for example, to a Coaxial cable. Compared to using a coaxial cable disturbances along the coaxial cable are avoided would affect the received signals. In the invention, the distance between dipole and mass is practical reduced to zero while using a coaxial cable this distance is equal to the length of the cable, which is several tens Meter can be.

A further advantageous embodiment of the antenna is characterized in that the further component is a rod of the antenna. Such an antenna rod is in the in 1 illustrated embodiment, for example, the main rod 1 , which has significant dimensions, is directly connected to ground and thus represents a perfectly stable grounding element.

A further advantageous embodiment of the antenna is characterized characterized in that the first part of the dipole by means of a box made of electrically conductive material, in particular a circuit is connected to the rod of the antenna. This is with connected to the advantage that achieves a good connection with mass and problems with the recording of interfering signals the dipole can be avoided. This embodiment of the box with electrically conductive material fulfills two functions, on the one hand, the inside of the box, that is, for example a circuit, shielded and on the other part of the stable Created connection between dipole and mass.

A Another advantageous embodiment of the invention characterized in that it comprises a circuit associated with connected to the box, and that the dipole connected to the circuit is. This embodiment of the box fulfills two functions, On the one hand, the circuit becomes a stable connection to ground Provided and the other is the connection shielded between circuit and dipole and ground.

A Another advantageous embodiment of the invention characterized in that a connector is provided, which is connected to the first part of the dipole and that the connector connectable to a coaxial cable connected to ground. Herewith is advantageously the connector a stable Connection to earth provided.

A Another advantageous embodiment of the invention characterized in that the connector parallel to a grounded, horizontal rod of the antenna is arranged. This provides the advantage that the connection between coaxial cable and connector is parallel to this antenna rod and possible problems caused by the cable Disruptions occur, can be avoided.

A Another advantageous embodiment of the invention characterized in that the connector with a circuit is connected and that the circuit with the first part of the dipole connected is. This gives the advantage that possible Signal losses are minimized because a direct connection to ground, not made by cable.

A further advantageous embodiment of the antenna is characterized in that the circuit consists of an impedance matching circuit and an amplification circuit, wherein both circuits form a circuit unit. The operation of the unit corresponds to the operation of the failure of the amplification circuit Impedance matching circuit.

advantageously, Fulfills the unit even if the amplification circuit fails still the important function of impedance matching; with trouble-free Operation can be thanks to the amplification circuit even weak signals are received that are received by the antenna become.

A Another advantageous embodiment of the invention characterized in that the circuit is arranged on at least two circuit boards is, and that the circuit boards are stacked are.

In order to the advantage is achieved that the size of the box, which receives the circuit, be made compact and optimized can.

A Another advantageous embodiment of the invention characterized in that the circuit is at least one printed Coil has. This further reduces the volume of the circuit.

One Embodiment of the invention will now be described with reference to FIGS described. It shows:

1 a perspective view of the antenna according to the invention;

2 a perspective view of the front and rear radome of the antenna according to the invention;

3 Units of the dipole of the antenna according to the invention;

4 a connection box and a support part of this connection box according to the invention;

5 1 is a diagram of a circuit arrangement of an impedance matching circuit and an electrical amplification circuit,

How out 1 can be seen, the antenna has a three-bar arrangement; These are a central main bar 2 , two secondary rods, one upper secondary rod 2 and a lower secondary bar 3 , These rods 1 . 2 and 3 preferably have different lengths. The three bars 1 . 2 . 3 are arranged in a plane (coplanar), in particular they are arranged in exactly one vertical plane. The secondary bars 2 . 3 are opposite the main bar 1 angled, with the rods 2 . 3 regarding the main bar 1 at one of their ends ("first end") diverge while they run together at their opposite end ("second end").

The upper secondary rod 2 and the main bar 1 form a first angle A1 while the lower secondary tange 3 and the main bar 1 form a second angle A2. The angles A1, A2 define the direction of maximum radiation of the antenna in the vertical plane. Preferably, the angles A1, A2 are the same and are in the range between 2 ° and 75 °; in a preferred embodiment, in 1 is shown, the angles A1 and A2 each have about 6.4 °.

At the second, diverging end of the secondary rods, in this embodiment, the upper secondary rod projects beyond the main rod in the longitudinal direction and the lower secondary rod 3 is opposite the main bar 1 shortened in the longitudinal direction, whereby an antenna is created in a stepped structure. In particular, the upper secondary rod has a length of 743 millimeters, while the lower secondary rod has a length of 563 millimeters and the main rod has a length of 653 millimeters (length between "first end" and "second end" at the radome 4 in which the bars 1 . 2 3 are fixed), with the main bar 1 about the "second end" to a mast 17 can extend and, for example, have a total length of 1020 millimeters. Relative to the fixation point (Radom 4 ) of the bars, the main bar has a length which is between the length of the (longest) length of one of the secondary bars and the (shortest) length of the other secondary bar.

The three bars 1 . 2 . 3 consist in particular of tubes, preferably of aluminum. At the second end or near the diverging second end of the three rods 1 . 2 and 3 they go through a front wheel 5 , which serves as a fastener for the rods 1 . 2 . 3 serves and at the convergent ("second") end are the rods 1 . 2 . 3 in a second radome 4 introduced. The fastener 5 has the shape of a box and fixes the positioning of the bars 1 . 2 . 3 among themselves.

The fastener 5 encloses at least a part of the rods 1 . 2 . 3 , The second radome 4 encloses a part of the main rod 1 at the second end, where a support part 8th is mounted, on which a reflector 6 is arranged.

These rods 1 . 2 and 3 have a plurality of identical element rods 7 which are mounted along the structure in a direction orthogonal to the plane formed by the bars. The element bars 7 form director elements 71 , which are in particular equal complaint and each have a distance of 90 millimeters, and at least one parasitic element 72 ( "Parasite element") the antenna. The director elements 71 the bars 1 . 2 3 can be arranged in the same vertical planes.

The director elements 71 have the task of guiding the received signal to the active element of the antenna (dipole). The parasite element 72 increases the bandwidth of the active element (dipole) and consequently of the antenna. In this non-limiting example of the invention, the upper secondary rod has 2 a larger number of director elements 71 while the lower secondary rod 3 a smaller number of director elements 71 Has. In particular, the upper secondary rod has nine director elements, the main rod eight and the lower secondary rod seven director elements.

The bars 1 . 2 and 3 are at their convergent ("second") end by means of a second radome 4 connected and between convergent ("second") and divergent ("first") end by means of a first radome or fastener 5 ,

The fastener 5 encloses at least one director element 71 at least one pole 1 . 2 . 3 and in particular a director element 71 every pole 1 . 2 and 3 ,

At the in 1 The antenna shown are the director elements 71 from two of the three bars 1 . 2 . 3 which of the fastener 5 are enclosed, arranged substantially in the same vertical plane.

The reflector 6 consists of two panels 9 and 10 of bars 11 , where the panels 9 and 10 in an angled position with respect to the main rod 1 on the support part 8th are arranged. These bars 11 have edges at their ends 12 who hold the bars. These bars 11 go through bars 111 holding the reflector with the support part 8th Fasten.

In the second radome 4 is a dipole 13 and a junction box 14 arranged, which is a resistance matching circuit 15 and an amplification circuit 16 takes up (cf. 4 ).

The antenna is on a vertical mast 17 by means of an auxiliary closure 18 and at the second (converging) end of the rods 1 . 2 . 3 attached.

How out 2 can be seen, the antenna points 2 a second radome 4 and a first radome 5 on, with the second radome 4 through two surrounding covers 41 and 42 is formed in a trapezoidal shape, which the rods 1 . 2 and 3 the antenna structure by means of openings 43 enclose in their front part. The cover 41 has through holes 45 with pegs 46 in the other cover 42 correspond. These pins take screws to close the covers 41 . 42 on. The covers 41 and 42 have openings 47 for apertured cones 48 on, through which the element bars 7 ( 1 ) run to the sections of the rods 1 . 2 and 3 belong.

Likewise, the second radome points 4 a recess 49 in its lower area, in which the arrangement of dipole 13 , Connection box 14 and support part 19 sits ( 4 ). The second radome 4 has cones 491 to anchor this arrangement.

The first radome 5 consists of two covers 51 and 52 that the rods 1 . 2 and 3 the structure by means of openings 53 in its front part by means of openings 53 and by means of openings 54 enclose in their rear part. The cover 51 has through holes 55 that with screw pins 56 in the other cover 52 correspond. These cones 56 Take screws to close the covers 51 and 52 on. The covers 51 and 52 have openings 57 for apertured spigots 58 through which the director elements 71 ( 1 ) leading to the sections of the rods 1 . 2 and 3 belong, by the first radome 5 run.

3 shows in detail the dipole 13 which consists of two identical parts 131 consists. Every part 131 consists of a first profile 132 in "U" shape with an open section (open top "U") and a second profile 133 in 'V' shape with an open section (open top 'V'), with the two profiles 132 . 133 are arranged with their open sections to each other.

The opened section of the first profile 132 has a first separation distance between the legs of the "U" while the opened portion of the second profile 133 has a second separation distance at the upper end of the angled V-leg. Preferably, the first separation distance is greater than the second separation distance, so that the second profile 133 in the first profile 132 is integrated.

Each of the parts 133 is made of an electrically conductive sheet by cutting and stamping in such a way that the part 131 the profile 133 and the profile 132 in the configuration described above. So both are profiles 132 and 133 galvanically connected to each other.

The dipole 13 is part of an arrangement made up of the dipole 13 , a box 14 that has an impedance matching circuit 15 and / or an amplifier circuit 16 , and out of support part 19 consists.

How out 4 can be seen, is the junction box 14 with a support part 19 connected or integrated into this. The box 14 consists of a cuboid body (base) 141 and a cover 142 , which are joined together by pressing to close. The base 141 has cones in its interior 143 on which a circuit board of an electronic circuit 15 . 16 ( 5 ) is arranged. Likewise, the base has 141 openings 144 with pegs 191 corresponding to that in the support part 19 are arranged. These cones 191 have inner openings into which a connector 196 which introduces the electrical connection between the dipole 13 and the circuit 15 . 16 that is in the junction box 14 is arranged, wherein the pins as well as the fixing connection box with the support member 19 serves.

The connection box 14 has a connector / connector 145 for direct or indirect connection to a television, radio and / or data receiver. The connector 145 represents the connecting element of the antenna. The box 14 and the connector 145 are integrally formed. The box is electrically shielded (electrically conductive housing connected to ground).

The cover 142 has on its side walls on elements, in particular closure elements 146 , which makes a galvanic contact with the main rod 1 once the arrangement dipole 13 , Connection box 14 and support part 19 in the recess 49 of the second radome 4 are installed. This galvanic contact establishes the junction of the junction box with ground, thereby improving its shielding.

How out 4 can be seen, there is the support part 19 of the connection box 14 from a crucible-shaped rim with side walls that go into arms 193 go over, which extend laterally. In the interior of the cup-shaped part are pins 191 for receiving the box 14 provided as well as an opening 194 through which the connector 145 of the connection box 14 to be led. The crucible-shaped part 192 has openings in its side walls 195 on, in the cones 491 of the rear wheel 4 ( 2 ) protrude to the support part 19 with the rear wheel 4 to anchor.

The crucible-shaped part 192 goes in arms 193 over, in each of which a part 131 is arranged, with two parts 131 the dipole 13 form ( 3 ). The parts 131 have openings 137 in which the cones 197 for fixing these parts with the arms 193 of the support part 19 be introduced.

The arrangement of dipole 13 , Connection box 14 , Support part 19 is in the recess 49 of the rear wheel 4 arranged, with this Hinterradom 4 by means of bolts 491 and the openings 195 of the support part 19 is attached.

5 shows an exemplary circuit diagram of the electronic impedance matching circuit 15 and the electronic amplification circuit 16 , These circuits are also the subject of European Patent Application 1 199 771 are. In connection with the antenna according to the invention, however, it is provided that both circuits are implemented in a technology that distributes the circuit over several boards and arranges them one above the other (tecnologia multicapa). In addition, the invention provides that coils are realized in printed form. Overall, the space required for the circuits is minimized and the reliability of the circuits is improved.

The Matching circuit consists of the printed line J1.

The Amplification circuit consists of a high-pass filter, consisting of capacitors C1 and C2 and coils L2 and L3, from a low pass filter consisting of the capacitors C15 and C16 and from coils L4, L5 and L6, from an amplification stage consisting of a transistor T1 and a polarization circuit consisting of resistors R1, R2, R3, R6, R17 and R18, capacitors C3, C4, C8 and C12 and coils L1 and CH1, an output filter formed by capacitors C10 and C14 and a coil L9. As well the amplifier consists of a pass circuit, a Block circuit and a current control circuit.

The Pass-through circuit allows the throughput of the input signal to the output of the circuit, if no supply is given, and is from the varicap diode D5, the diodes D1 and D2, the capacitors C7 and C9 formed, further consisting of resistors R5, R8, R15 and R16 and printed circuit traces L7 and L8.

The Blocking circuit prevents in the event that no power is given is that the signal from the pass circuit to the amplifier through is and allows, if power is present, the through-connection the signal from the gain stage to the output filter. This is through the diode D4, the capacitors C5 and C11, the coils CH3 and CH5 and formed by the resistors R9 and R14.

The current control circuit allows the supply of the device with multiple voltages and consists of the transistors T2, T3, T4 and T5, the resistors R4, R7, R10, R11, R12 and R12, the capacitor C6 and the coil CH6.

In the antenna according to the invention is the dipole 13 or one of its parts ("first part") 131 connected to ground, regardless of a cable, for example, between the connector 145 and mass is arranged.

The main bar 1 is electrically on the one hand with the mast 17 ( 1 ), which is connected to ground, and on the other hand with the first part 131 of the dipole 13 connected. This electrical connection includes the junction box 14 ( 4 ) made of electrically conductive material. This connection also includes the circuit 15 . 16 that with the box 14 connected is.

In summary, it should be noted that the ground connection, for example, the first part 131 , the box 14 , the connector 196 ( 4 ), the circuit 15 . 16 , the main rod 1 , the auxiliary closure 18 (made of electrically conductive material) and the masts 17 includes.

The first part 131 of the dipole 13 is advantageously spatially immediately adjacent to the grounded main rod 1 the antenna arranged. The length of the ground connection path between dipole and main rod 1 is extremely low.

In addition, the antenna has a connector (connector) 145 that with the part 131 of the dipole 13 is connected, wherein the connector 145 can be connected to ground via a coaxial cable.

The connector 145 is parallel to the horizontal grounded main rod 1 arranged, with the advantage that interference generated by the antenna connection coaxial cable can be avoided, because the coaxial cable is arranged in the assembled state in a plane perpendicular to the dipole and reflector.

The impedance matching circuit 15 and the amplification circuit 16 form a circuit unit, which is designed in such a way that the operation of the unit in case of failure of the amplification circuit 16 the operation of the impedance matching circuit 15 equivalent. During normal operation, ie when supplied with the corresponding supply voltage, the arrangement operates as an impedance matching and amplification circuit.

The circuits 15 . 16 are arranged on at least two circuit boards, wherein the circuit boards are preferably arranged one above the other. This allows the volume of the box 14 optimize and near the dipole 13 arrange without the interference signals are generated that would affect the operation of the antenna.

1

center arranged main bar (main bar)

2

Upper Secondary rod (secondary rod)

3

Lower Secondary rod (secondary rod)

4

Hinterradom

5

Vorderradom, fastener

6

reflector

seven

Element Bars

8th

reflector support

9

first Panel reflector

10

second Panel reflector

11

Element Bars

111

reflector rod

12

edge

13

dipole

14

junction box

15

Impedance matching circuit

16

amplification circuit

17

vertical mast

18

auxiliary shutter

19

supporting part

41

First Cover of the rear wheel

42

Second Cover of the rear wheel

43

openings

45

Through openings

46

spigot

47

openings

48

spigot with openings

49

recess

491

anchor bolts

51

First Cover of the front wheel

52

Second Cover of the front wheel

53

openings

54

openings

55

Passage openings

56

spigot with screw thread

57

openings

58

spigot with opening

131

parts of the dipole

132

"U" profile

133

"V" profile

134

connection points

135

Fin, rib

136

opening

137

opening

141

cuboid Body / base

142

cover

143

bolt

144

openings

145

plug

191

spigot

192

Side wall, (Cazoleta)

193

poor

194

opening

195

openings

196

joint

197

spigot

A1

first Angle formed by the upper secondary rod and the main bar

A2

second Angle formed by the lower secondary rod and the main bar

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - ES 200002389 [0002]
• - ES 200002388 [0002]
• - ES 200002387 [0002]
• - ES 200002386 [0002]
• EP 1199771 [0052]

Claims (10)

Antenna, in particular for receiving television, radio and / or data signals, comprising at least one dipole ( 13 ), which consists of two parts ( 131 ), wherein a first of the two parts ( 131 ) is connected to ground, characterized in that the antenna is another component ( 1 ), which is connected to ground, and that the first part ( 131 ) of the dipole ( 13 ) with the further component ( 1 ) connected is. Antenna according to claim 1, characterized in that the further component is a rod ( 1 . 2 . 3 ) of the antenna is. Antenna according to claim 2, characterized in that the first part ( 131 ) of the dipole ( 13 ) by means of a box ( 14 ) made of electrically conductive material with the rod ( 1 . 2 . 3 ) of the antenna is connected .. Antenna according to claim 3, characterized in that it comprises a circuit ( 15 . 16 ) connected to the box ( 14 ) and that the dipole ( 13 ) with the circuit ( 15 . 16 ) connected is. Antenna according to one of the preceding claims, characterized in that a connecting plug ( 145 ), the first part ( 131 ) of the dipole ( 13 ) and that the connector ( 145 ) is connectable to a coaxial cable connected to ground. Antenna according to claim 5, characterized in that the connector ( 145 ) parallel to a rod ( 1 ) of the antenna, in particular to a horizontal and / or grounded rod of the antenna is arranged. Antenna according to Claim 5 or 6, characterized in that the connecting plug is connected to a circuit ( 15 . 16 ) and that the circuit ( 15 . 16 ) with the first part ( 131 ) of the dipole is connected .. Antenna according to one of Claims 4 to 7, characterized in that the circuit ( 15 . 16 ) from an impedance matching circuit 15 ) and an amplification circuit ( 16 ), which form a circuit unit and that the operation of the unit in case of failure of the amplification circuit ( 16 ) the operation of the impedance matching circuit ( 15 ) corresponds. Antenna according to one of Claims 4 to 8, characterized in that the circuit ( 15 . 16 ) is arranged on at least two circuit boards, and the circuit boards are arranged one above the other Antenna according to one of Claims 4 to 9, characterized in that the circuit ( 15 . 16 ) has at least one printed coil.