EP2093838A1 - Yagiantenne - Google Patents

Yagiantenne Download PDF

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Publication number
EP2093838A1
EP2093838A1 EP09002275A EP09002275A EP2093838A1 EP 2093838 A1 EP2093838 A1 EP 2093838A1 EP 09002275 A EP09002275 A EP 09002275A EP 09002275 A EP09002275 A EP 09002275A EP 2093838 A1 EP2093838 A1 EP 2093838A1
Authority
EP
European Patent Office
Prior art keywords
rod
rods
antenna according
main rod
antenna
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09002275A
Other languages
German (de)
English (en)
French (fr)
Inventor
Santos Ramón M. Lois
Javier Pazos Losada
Jesus Ricart Fernandez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Televes SA
Original Assignee
Televes SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from ES200800547A external-priority patent/ES2336878B1/es
Priority claimed from ES200800548A external-priority patent/ES2338965B2/es
Priority claimed from ES200800546A external-priority patent/ES2334618B2/es
Application filed by Televes SA filed Critical Televes SA
Publication of EP2093838A1 publication Critical patent/EP2093838A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/28—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements
    • H01Q19/30—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements the primary active element being centre-fed and substantially straight, e.g. Yagi antenna

Definitions

  • the present invention relates to an antenna, in particular for the reception of television, radio and / or data signals according to the preamble of claim 1.
  • antennas There are different antennas known, for example, the subject of Spanish patents 200002389 . 200002388 . 200002387 and 200002386 the applicant.
  • the antennas currently on the market are designed to receive analog and / or digital signals. With the implementation of the high definition television, antennas with characteristics corresponding to the new television signals are needed.
  • the invention is therefore based on the object to provide an antenna having properties that correspond to the new types of digital signal high definition.
  • the invention has a plurality of advantages.
  • the antenna according to the invention in particular for receiving television, radio and / or data signals, comprises at least one dipole, three in one plane (coplanar) bars, a centrally located main bar and two secondary bars, an upper secondary bar and a lower secondary bar wherein the rods comprise a plurality of element rods forming director elements and at least one parasitic element.
  • the secondary rods are angled with respect to the main rod in such a way that they diverge at a first of its two ends and that they converge at their second end, which is opposite to the first end.
  • the antenna is characterized in that at the first end of the main rod of one of the secondary rods, the main rod protrudes in the longitudinal direction and the other secondary rod is shortened in relation to the main rod in the longitudinal direction.
  • a further advantageous embodiment according to the invention is characterized in that the upper secondary rod extends beyond the main rod in the longitudinal direction and that the lower secondary rod is shortened in the longitudinal direction relative to the main rod.
  • a further advantageous embodiment according to the invention is characterized in that the lower secondary rod is longer than the main rod and that the upper secondary rod is shorter than the main rod. This shifts the axis of maximum radiation of the antenna downwards. This is advantageous if, for example, depending on the topography of the installation location, it is advantageous to receive a reflected signal via a reflection in a predetermined direction.
  • a further advantageous embodiment according to the invention is characterized in that the rods - with respect to a fixing point at the second end ("Radom 4") - have different lengths and that the longest rod has the largest number of director elements. This has the advantage of increasing the gain of the antenna in the direction of the longest rod with the largest number of director elements and increasing the signal-to-noise ratio in the direction of the longest rod.
  • An advantageous embodiment according to the invention is characterized in that the shortest rod has the smallest number of director elements. This provides the advantage of reducing noise levels from below the antenna.
  • a further advantageous embodiment according to the invention is characterized in that at least one parasitic element is provided in the main rod. This has the advantage that the bandwidth of the antenna is increased and thus the antenna is available for a wider frequency range.
  • An advantageous embodiment according to the invention is characterized in that the upper secondary rod and the main rod form a first angle and the lower secondary rod and the main rod form a second angle and that the first angle and the second angle are equal or unequal.
  • the angles are the same and are in the range between 2 ° and 75 °. This has the advantage of reducing the levels of impulse noise (automobile spark plugs, household electrical appliances near the antenna, especially in buildings where the antenna is installed) coming to the antenna.
  • An advantageous embodiment according to the invention is characterized in that it comprises a fastening element in the form of a box, which fixes the position of the rods to each other.
  • An advantageous embodiment according to the invention is characterized in that the fastening element encloses at least a portion of the rods. This provides the advantage that the mechanical strength of the antenna is strengthened and the protection against oxidation and corrosion of metallic parts is extended.
  • An advantageous embodiment according to the invention is characterized in that the rods pass through the fastening element. This has the advantage that the rods are mechanically fastened to each other, movements of the rods and changed distances of the rods to each other are avoided; Overall, the antenna is given more mechanical robustness.
  • An advantageous embodiment according to the invention is characterized in that the fastening element encloses at least one director element of at least one rod and in particular a director element of each rod.
  • a further advantageous embodiment according to the invention is characterized in that the director elements of the rods, which are enclosed by the same fastening element, are arranged substantially exactly vertical to each other. This provides the advantage of greater robustness and consistency, thereby avoiding movement and vibration between the various rods and / or director elements.
  • the antenna has a three-bar arrangement; these are a central main rod 2, two secondary rods, an upper secondary rod 2 and a lower secondary rod 3. These rods 1, 2 and 3 preferably have different lengths.
  • the three rods 1,2, 3 are arranged in a plane (coplanar), in particular they are arranged in exactly one vertical plane.
  • the secondary rods 2, 3 are angled relative to the main rod 1, the rods 2, 3 diverge with respect to the main rod 1 at one of its ends ("first end") while converging at its opposite end (“second end”) ,
  • the upper secondary rod 2 and the main rod 1 form a first angle A1, while the lower secondary rod 3 and the main rod 1 form a second angle A2.
  • the angles A1, A2 define the direction of maximum radiation of the antenna in the vertical plane.
  • the angles A1, A2 are the same and are in the range between 2 ° and 75 °; in a preferred embodiment, in FIG. 1 is shown, the angles A1 and A2 each have about 6.4 °.
  • the upper secondary rod projects longitudinally beyond the main rod and the lower secondary rod 3 is shortened longitudinally with respect to the main rod 1, thus providing an antenna in a stepped structure.
  • 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 radome 4 where the rods 1, 2, 3 are fixed), wherein the main rod 1 extends beyond the "second end” may extend a mast 17 and, for example, may have a total length of 1020 millimeters.
  • the main rod 1 has a length which is between the (longest) length of one of the secondary rods and the (shortest) length of the other secondary rod.
  • the three rods 1, 2, 3 consist in particular of tubes, preferably of aluminum. At the second end or near the divergent second end of the three rods 1,2 and 3 they pass through a front wheel 5 serving as a fastener of the rods 1, 2, 3 and at the converging ("second") end become the rods 1, 2, 3 introduced into a second radome 4.
  • the fastener 5 has the shape of a box and fixes the positioning of the rods 1,2,3 with each other.
  • the fastening element 5 encloses at least part of the rods 1, 2, 3.
  • the second radome 4 encloses a part of the main rod 1 at the second end, on which a support part 8 is mounted, on which a reflector 6 is arranged.
  • These rods 1, 2 and 3 have a plurality of like element bars 7 mounted along the structure in a direction perpendicular to the plane formed by the bars.
  • the element rods 7 form director elements 71, which are in particular equally spaced and each have a spacing of 90 millimeters, and at least one parasitic element 72 ("parasitic element") of the antenna.
  • the purpose of the director elements 71 is to direct the received signal to the active element of the antenna (dipole).
  • the parasitic element 72 increases the bandwidth of the active element (dipole) and consequently of the antenna.
  • the upper secondary rod 2 has a larger number of director elements 71, while the lower secondary rod 3 has a smaller number of director elements 71.
  • the upper secondary rod has nine director elements, the main rod eight and the lower secondary rod seven director elements.
  • the rods 1, 2 and 3 are connected at their converging ("second") end by means of a second radome 4 and between converging ("second") and divergent ("first") ends by means of a first radome or fastener 5.
  • the fastening element 5 encloses at least one director element 71 of at least one rod 1, 2, 3 and in particular a director element 71 of each rod 1, 2 and 3.
  • the reflector 6 consists of two panels 9 and 10 of rods 11, wherein the panels 9 and 10 are arranged in an angled position with respect to the main rod 1 on the support member 8. These rods 11 have at their ends edges 12 which hold the rods. These rods 11 pass through rods 111, which fasten the reflector to the support part 8.
  • the second radome 4 there is disposed a dipole 13 and a junction box 14 accommodating a resistance matching circuit 15 and an amplifying circuit 16 (see FIG. FIG. 4 ).
  • the antenna is fixed to a vertical mast 17 by means of an auxiliary shutter 18, close to the second (converging) end of the rods 1, 2, 3.
  • the cover 41 has through holes 45 which correspond with pins 46 in the other cover 42. These pins take on screws for closing the covers 41, 42.
  • the covers 41 and 42 have openings 47 for apertured pins 48 through which the element rods 7 (FIG. FIG. 1 ) belonging to the sections of bars 1, 2 and 3.
  • the rods 1, 2, 3 are fixed; this forms the fixation point for the 3 rods of different lengths (relative to the fixation point).
  • the second radome 4 has a recess 49 in its lower region, in which the arrangement of dipole 13, connection box 14 and support member 19 is seated ( FIG. 4 ).
  • the second radome 4 has pins 491 for anchoring this arrangement.
  • the first radome 5 consists of two covers 51 and 52 which surround the bars 1, 2 and 3 of the structure by means of openings 53 in their front part by means of openings 53 and by means of openings 54 in their rear part.
  • the cover 51 has through holes 55 corresponding to screw 56 in the other cover 52. These pins 56 receive screws for closing the covers 51 and 52.
  • the covers 51 and 52 have openings 57 for apertured pins 58 through which the director elements 71 (FIG. FIG. 1 ), which belong to the sections of the rods 1, 2 and 3, pass through the first radome 5.
  • FIG. 3 shows in detail the dipole 13, which consists of two identical parts 131.
  • Each part 131 consists of a first profile 132 in "U” shape with an open portion (open top “U”) and a second profile 133 in 'V' shape with an open portion (open top “V”), wherein the two profiles 132, 133 are arranged with their open sections to each other.
  • the opened portion 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 top of the angled V-legs.
  • the first separation distance is greater than the second separation distance, so that the second profile 133 is integrated into the first profile 132.
  • Each of the parts 133 is made of an electrically conductive sheet by cutting and embossing in such a manner that the part 131 forms the profile 133 and the profile 132 in the configuration described above. Thus, both profiles 132 and 133 are electrically connected.
  • the dipole 13 is part of an arrangement consisting of the dipole 13, a box 14, an impedance matching circuit 15 and / or an amplifier circuit 16, and the support member 19.
  • the junction box 14 is connected to a support member 19 and 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 in its interior pin 143, on which a circuit board of an electronic circuit 15, 16 (FIG. FIG. 5 ) is arranged.
  • the base 141 has openings 144 corresponding to pins 191 disposed in the support member 19.
  • These pins 191 have internal openings into which a connecting piece 196 is introduced which establishes the electrical connection between the dipole 13 and the circuit 15, 16 which is arranged in the connection box 14, the pins also being the fixing connection box with the support part 19 serves.
  • the connection box 14 has a connector 145 for direct or indirect connection to a television, radio and / or data receiving device.
  • the connector 145 represents the connecting element of the antenna.
  • the Box 14 and connector 145 are integrally formed.
  • the box is electrically shielded (electrically conductive housing connected to ground).
  • the cover 142 has on its side walls via elements, in particular closure elements 146, which make a galvanic contact with the main rod 1, once the assembly dipole 13, junction box 14 and support member 19 are installed in the recess 49 of the second radome 4. This galvanic contact establishes the junction of the junction box with ground, thereby improving its shielding.
  • FIG. 4 consists of the support member 19 of the junction box 14 of a crucible-shaped edge with side walls, which merge into arms 193, which extend laterally.
  • pins 191 are provided for receiving the box 14 and an opening 194 through which the connector 145 of the junction box 14 is guided.
  • the crucible-shaped part 192 has in its side walls openings 195, in the pin 491 of the rear wheel 4 ( FIG. 2 protrude) to anchor the support member 19 with the rear wheel 4.
  • the crucible-shaped part 192 merges into arms 193, in each of which a part 131 is arranged, two parts 131 forming the dipole 13 ( FIG. 3 ).
  • the parts 131 have openings 137 into which the pins 197 are inserted for attachment of these parts with the arms 193 of the support member 19.
  • FIG. 5 shows an exemplary circuit diagram of the electronic impedance matching circuit 15 and the electronic amplification circuit 16, these circuits also being the subject of the European patent application 1 199 771 are.
  • both circuits are implemented in a technology that distributes the circuit over several boards and arranges them one above the other (tecnologia multicapa).
  • the invention provides that coils are realized in printed form.
  • 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, a low-pass filter, consisting of the capacitors C15 and C16 and coils L4, L5 and L6, a gain 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.
  • the amplifier consists of a pass circuit, a block circuit and a current control circuit.
  • the pass circuit allows the input signal to pass through to the output of the circuit when no power is applied, and is composed of the varicap diode D5, diodes D1 and D2, capacitors C7 and C9, and resistors R5, R8, R15 and R16 as well as printed conductors L7 and L8.
  • the blocking circuit in the event that there is no supply that the signal from the pass circuit to the amplifier is turned on and allows, if power is present, the switching of the signal from the amplification stage to the output filter. This is formed by the diode D4, the capacitors C5 and C11, the coils CH3 and CH5 and by the resistors R9 and R14.
  • the current control circuit enables 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.
  • the dipole 13 or one of its parts 131 is connected to ground, independently of a cable, which is arranged, for example, between the connection plug 145 and ground.
  • the main rod 1 is electrically connected on the one hand to the mast 17 (FIG. FIG. 1 ) and on the other hand connected to a part 131 of the dipole 13.
  • This electrical connection comprises the connection box 14 (FIG. FIG. 4 ) made of electrically conductive material.
  • This connection also includes the circuit 15, 16 connected to the box 14.
  • the connection includes the part 131, the box 14, the circuit 15, 16, the main bar 1, the auxiliary shutter 18 (made of electrically conductive material) and the masts 17.
  • the antenna has a connector 145 which is connected to the part 131 of the dipole 13, the connector 145 being connectable to ground via a coaxial cable.
  • the connector 145 is arranged in parallel to the main bar 1, with the advantage that interference caused by the antenna connection coaxial cable is avoided because the coaxial cable is mounted in a plane perpendicular to the dipole and the reflector.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
EP09002275A 2008-02-19 2009-02-18 Yagiantenne Withdrawn EP2093838A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ES200800547A ES2336878B1 (es) 2008-02-19 2008-02-19 Antena.
ES200800548A ES2338965B2 (es) 2008-02-19 2008-02-19 Antena.
ES200800546A ES2334618B2 (es) 2008-02-19 2008-02-19 Antena.

Publications (1)

Publication Number Publication Date
EP2093838A1 true EP2093838A1 (de) 2009-08-26

Family

ID=40626703

Family Applications (3)

Application Number Title Priority Date Filing Date
EP09002273A Withdrawn EP2093836A1 (de) 2008-02-19 2009-02-18 Yagiantenne
EP09002275A Withdrawn EP2093838A1 (de) 2008-02-19 2009-02-18 Yagiantenne
EP09002274.0A Active EP2093837B1 (de) 2008-02-19 2009-02-18 Antenne

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09002273A Withdrawn EP2093836A1 (de) 2008-02-19 2009-02-18 Yagiantenne

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09002274.0A Active EP2093837B1 (de) 2008-02-19 2009-02-18 Antenne

Country Status (5)

Country Link
EP (3) EP2093836A1 (pt)
DE (3) DE202009002348U1 (pt)
ES (1) ES2446992T3 (pt)
PL (1) PL2093837T3 (pt)
PT (1) PT2093837E (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201528050U (zh) 2009-10-19 2010-07-14 杨瑞雄 室外天线
ES2385006B2 (es) * 2010-01-15 2013-07-12 Televes S.A. Antena de telecomunicación.
PL2346115T3 (pl) * 2010-01-15 2013-03-29 Televes Sa Antena
WO2023245274A1 (en) * 2022-06-22 2023-12-28 Huawei Technologies Canada Co., Ltd. Tightly-coupled antenna array and method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088115B (de) * 1959-10-24 1960-09-01 Sihn Kg Wilhelm Jun Dipol-Antennenanordnung
FR1328258A (fr) * 1962-07-10 1963-05-24 Fuba Antennenwerke Antenne de télévision
US3531805A (en) * 1968-06-28 1970-09-29 Winegard Co High gain all channel television antenna
EP1199771A2 (de) 2000-09-29 2002-04-24 Televes, S.A. Antenne
ES2182657A1 (es) 2000-09-29 2003-03-01 Televes Sa Antena.
ES2182658A1 (es) 2000-09-29 2003-03-01 Televes Sa Antena.
ES2183692A1 (es) 2000-09-29 2003-03-16 Televes Sa Antena.
ES2184577A1 (es) 2000-09-29 2003-04-01 Televes Sa Antena.
US20070262912A1 (en) * 2006-03-31 2007-11-15 Eckwielen Bradley L Modular digital UHF/VHF antenna

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452073A (en) * 1944-11-17 1948-10-26 Schivley George William Folded dipole
GB836350A (en) * 1958-08-27 1960-06-01 Gustave Jean Henri Joseph Bern Aerials for very-high-frequency or ultra-high-frequency radio waves
DE7013959U (de) * 1970-04-16 1970-11-26 Bosch Elektronik Gmbh Fernsehempfangsantenne.
AU2001237654A1 (en) * 2000-02-26 2001-09-03 Anthony Rabie An antenna

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088115B (de) * 1959-10-24 1960-09-01 Sihn Kg Wilhelm Jun Dipol-Antennenanordnung
FR1328258A (fr) * 1962-07-10 1963-05-24 Fuba Antennenwerke Antenne de télévision
US3531805A (en) * 1968-06-28 1970-09-29 Winegard Co High gain all channel television antenna
EP1199771A2 (de) 2000-09-29 2002-04-24 Televes, S.A. Antenne
ES2182657A1 (es) 2000-09-29 2003-03-01 Televes Sa Antena.
ES2182658A1 (es) 2000-09-29 2003-03-01 Televes Sa Antena.
ES2183692A1 (es) 2000-09-29 2003-03-16 Televes Sa Antena.
ES2184577A1 (es) 2000-09-29 2003-04-01 Televes Sa Antena.
US20070262912A1 (en) * 2006-03-31 2007-11-15 Eckwielen Bradley L Modular digital UHF/VHF antenna

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WIRELESS WORLD, August 1963 (1963-08-01), pages 389, XP001386326 *

Also Published As

Publication number Publication date
DE202009002347U1 (de) 2009-05-20
EP2093836A1 (de) 2009-08-26
PL2093837T3 (pl) 2014-01-31
ES2446992T3 (es) 2014-03-11
PT2093837E (pt) 2013-11-07
DE202009002334U1 (de) 2009-05-20
DE202009002348U1 (de) 2009-05-20
EP2093837A1 (de) 2009-08-26
EP2093837B1 (de) 2013-09-18

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