EP1522120B1 - Niedrig bauende dual- oder multibandantenne, insbesondere für kraftfahrzeuge - Google Patents

Niedrig bauende dual- oder multibandantenne, insbesondere für kraftfahrzeuge Download PDF

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Publication number
EP1522120B1
EP1522120B1 EP03738023A EP03738023A EP1522120B1 EP 1522120 B1 EP1522120 B1 EP 1522120B1 EP 03738023 A EP03738023 A EP 03738023A EP 03738023 A EP03738023 A EP 03738023A EP 1522120 B1 EP1522120 B1 EP 1522120B1
Authority
EP
European Patent Office
Prior art keywords
antenna
antenna element
frequency band
flat
transmission
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.)
Expired - Lifetime
Application number
EP03738023A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1522120A1 (de
Inventor
Frank Mierke
Peter Karl Prassmayer
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.)
Kathrein SE
Original Assignee
Kathrein Werke KG
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
Application filed by Kathrein Werke KG filed Critical Kathrein Werke KG
Publication of EP1522120A1 publication Critical patent/EP1522120A1/de
Application granted granted Critical
Publication of EP1522120B1 publication Critical patent/EP1522120B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0471—Non-planar, stepped or wedge-shaped patch

Definitions

  • the invention relates to a low-build dual or Multiband antenna, in particular for motor vehicles after Preamble of claim 1.
  • the communication takes place in the 900 MHz or so-called 1800 MHz band.
  • the transmission takes place in the so-called 1900 MHz range.
  • the next upcoming UMTS networks are in the 2000 and 2100 MHz band range being constructed.
  • a known from the prior art such antenna has one over a metallic base or Base plate to parallel surface spotlight, on its one longitudinal side over a perpendicular to the surface radiating element and to the base plate running short circuit shorted to the metallic base plate is.
  • Length and width and thus the size of the surface radiating element is for example the lowest transmitting frequency, for example to the 900 MHz band customized.
  • the feed takes place via a preferably vertical to the surface radiating elements extending feed line, that from a feed-in point, for example one Adjustment network, in the area of the base plate, opposite the feed point is isolated, substantially perpendicular running up to the bottom of the uppermost lying surface radiating element is guided. Is to a corresponding passage opening in the underneath surface radiating element provided to the Infeed line up to the uppermost surface radiating element respectively.
  • a prior art single band antenna for broadcasting and / or the reception of electromagnetic signals, in particular Ultrahochfrequenzen, is known from DE 195 12 003 A1 become known.
  • This is a low-build antenna also described on a metallic Base or base plate arranged or positionable is, which comprises a surface radiator, wherein the Surface radiator has a short circuit on one side, namely the way that the surface spotlight over the short circuit with the metallic base or base plate connected is.
  • the antenna is as one piece Punch bending metal part formed.
  • the surface radiator has adjacent to its radiator surface also still radiator blades on, with the associated radiator surface electrically are connected.
  • a dual-band antenna described the two area radiators includes, each U-shaped under training of are designed laterally lying wings.
  • the surface radiator for operation in a higher frequency band lies within the area radiator for the lower Frequency band.
  • microstrip antenna in the form of a Inverted F antenna in principle also from EP 0 537 548 A1 as known.
  • Object of the present invention is, starting from the above-mentioned two Vorveröttingungen, a Dual or multi-band antenna to create the comparatively is simple.
  • the low-build dual or multi-band antenna according to the invention is characterized by the fact that its essential Parts of a complete one-piece punching-bending part are formed. Even the short circuit is between the at least two surface radiators, which are for two different Frequency bands are provided as one piece Part of the entire antenna is formed. Finally, even from under to the bottom of the uppermost and / or the highest transmitting frequency band provided area radiator extending feed line also as punching-bending part formed, which is integral with the remaining parts the antenna thus formed is connected.
  • the entire structure can be cascaded multiple times, so that not only two, but at least three different dimensioned one above the other substantially parallel surface radiating elements are formed so that the compact antenna, for example also as a multi-band antenna in three band ranges can radiate and receive.
  • the dual or multi-band antenna can surface radiating elements that are not necessarily different in each case Altitude to each other, but in a common High altitude lie, in which case the short circuit between two surface radiating elements then also is arranged running on the same contour line.
  • the surface radiating elements can be substantially in Top view with parallel and vertical cut and Be provided bending edges. But it is also possible that each outwardly facing punching edges of the higher lying surface elements for transmission in the higher Frequency band e.g. from their short-circuit connections too slightly diverging outwards at its free end are formed inwardly converging extending or obliquely extending end edge areas, in particular in their have free end. Likewise, the punched edges of the deeper lying surface elements formed obliquely be, with the punched edges both outside and inside not necessarily parallel.
  • radiator blades by one more bend to be extended down.
  • short circuit connections do not have to be for the formed entire width of the respective surface element be. You can face the adjacent transverse extension formed shorter of the respective surface element be.
  • a low-build compact dual band antenna according to the invention shown, consisting of two area radiator elements or area radiators 3a and 3b which are parallel are arranged to each other.
  • Antenna element with a larger metallic Surface or base plate 7, i. connected or a corresponding antenna is used, for example on the motor vehicle at the appropriate place on the Body panel of the vehicle attached, which then serves as a metallic counter surface or base.
  • the lower surface element or the lower surface radiator 3a is for transmission in a lower or lower Frequency band, for example tuned in the 900 MHz band.
  • the built-up smaller dimensioned Area radiator 3b is for example for transmission in 1800 MHz band range tuned.
  • the upper surface radiator 3b is at its in FIG. 1 left narrower boundary side or edge 9b over a short circuit 11b with the one underneath larger sized surface radiator 3a connected, wherein the short circuit 11b in the embodiment shown a Width has the width of the upper surface radiator 3b corresponds.
  • the lower surface radiator 3a is located on its left narrower boundary side 9a also with a vertical short-circuit surface 11a equipped over what usually an electrical connection to the mentioned electrical base or base plate 7 made is.
  • top and bottom panel radiators each equipped so that a part of each Area radiating element of a closed metal surface portion 103a or 103b exists, to which then each on the opposite side to short circuit 11a and 11b two in the transverse direction of the antenna radiator element offset antenna wings 203a and 203b in the following, partly as emitter blades 203a and 203b, respectively.
  • FIG. 5 shows a metallic starting sheet. in which the corresponding punching lines 19 dot-dashed lines and the bending edge 20 are shown dotted.
  • Area radiating element 3b for each higher frequency band range in a higher parallel position to the underneath lying surface radiating element 3a are brought as can be seen from Figures 2 and 3.
  • the bending process thereby becomes the short circuits 11a and 11b placed perpendicular to the plane of the surface radiating elements.
  • a feed line 25 is also necessary the preferred perpendicular to the plane of the surface radiating elements is provided and from below to the bottom of the overhead panel radiator element 3b is guided.
  • this is Feed line 25 also produced as a stamped and bent part, why the top surface radiator 3b a slot-shaped Recess 27 has, under remindbemik a left at the end of the slot-shaped recess 27 formed bending edge 29, creating a narrow strip of metal forming the aforementioned feed line 25 can be bent down vertically.
  • the leading ends of the radiator or Antenna wings 203a and 203b at their free end not with perpendicular to the longitudinal extension of the antenna wings running graduating or cutting edges 35 provided but with each other obliquely from outside to inside extending, ie converging closing or cutting edges 35th
  • this is likewise Feed line piece produced as a punched or bent part from top to bottom as increasingly narrower becoming metal strip, so as a metal strip with running towards each other, converging laterally opposite one another Punching edges 39 formed.
  • a short circuit 11a trapezoidal from bottom to top designed, at least with respect to the surface radiating element for the lower frequency band range.
  • the embodiment according to FIG. 11 shows that the antenna surfaces and also the antenna or Emitter blades for the different frequency ranges can also be arranged in a common height level, So are arranged U-shaped or forked, so that also in this embodiment, the short circuit 11b, which connects the two area radiating elements 11b and 11a, to lie in a common height arrangement.
  • a multiband antenna can also be constructed, if the corresponding cascading explained in the drawings two surface radiating elements, for example by a third panel radiator element is added, the smaller is dimensioned and on the second surface radiating element built up in a corresponding repetitive manner. Also in this case, the so-formed overall antenna be made as a single punching and bending part, so have a one-piece construction.
  • radiator vanes 203a of the bottom surface radiator with downwardly extended antenna wing sections Provided 203a ', which realize the advantage leaves the radiator vanes 203a in total opposite other embodiments can be shortened and are mechanically stable at the same time.
  • Such antenna wing sections also on a radiator wing 203b on a Area radiator 3b for transmission in a higher frequency band be provided alternatively or additionally.
  • FIG. 14 and 15 is a corresponding type of antenna shown, which is suitable in three offset from one another to radiate lying bands.
  • the corresponding Structure of the surface radiator 3b is in this embodiment compared to the previous embodiments quasi cascading around a higher one Smaller dimensioned surface radiator 3c extended been, the again corresponding radiator wings 303a.
  • the connection with the one below Emitter 3b also takes place via a corresponding Short circuit 11c.
  • the feed takes place via a Feeding line 25, which up to the top surface radiator 3c leads.
  • the illustrated antennas are so-called PIF antennas, ie so-called "planar inverted F antennas". It is known that in such antennas by the design and by the location of the feed point and the shorts the characteristics of each Antenna can be influenced. Therefore, be through the execution and by the location of the feed point as well the shorts the characteristics of the antennas to the Influences of the respective vehicle body and the respective Installation location individually adapted. It lies in usually the short circuits, for example the short keys 11a and 11b respectively at the narrow side of the antenna arrangement, the preferred in principle longitudinally symmetrical is formed (that is symmetrical to a vertical Central longitudinal plane). The feed point of the antenna is preferred on this longitudinal symmetry line or longitudinal plane of symmetry the antenna provided. Also by the location and Distance of the feeding point related to the short circuit can be the antenna impedance, in the case of car radio antennas usually 50 ohms, adjust.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Transmitters (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP03738023A 2002-07-15 2003-06-12 Niedrig bauende dual- oder multibandantenne, insbesondere für kraftfahrzeuge Expired - Lifetime EP1522120B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10231961 2002-07-15
DE10231961A DE10231961B3 (de) 2002-07-15 2002-07-15 Niedrig bauende Dual- oder Multibandantenne, insbesondere für Kraftfahrzeuge
PCT/EP2003/006199 WO2004008573A1 (de) 2002-07-15 2003-06-12 Niedrig bauende dual- oder multibandantenne, insbesondere für kraftfahrzeuge

Publications (2)

Publication Number Publication Date
EP1522120A1 EP1522120A1 (de) 2005-04-13
EP1522120B1 true EP1522120B1 (de) 2005-10-05

Family

ID=30009992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03738023A Expired - Lifetime EP1522120B1 (de) 2002-07-15 2003-06-12 Niedrig bauende dual- oder multibandantenne, insbesondere für kraftfahrzeuge

Country Status (11)

Country Link
US (1) US7158082B2 (zh)
EP (1) EP1522120B1 (zh)
JP (1) JP4156590B2 (zh)
CN (1) CN100435411C (zh)
AT (1) ATE306128T1 (zh)
AU (1) AU2003245936A1 (zh)
BR (1) BR0312716A (zh)
DE (2) DE10231961B3 (zh)
ES (1) ES2247548T3 (zh)
HK (1) HK1080998A1 (zh)
WO (1) WO2004008573A1 (zh)

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Also Published As

Publication number Publication date
ATE306128T1 (de) 2005-10-15
CN100435411C (zh) 2008-11-19
ES2247548T3 (es) 2006-03-01
JP2005539415A (ja) 2005-12-22
BR0312716A (pt) 2005-04-19
EP1522120A1 (de) 2005-04-13
HK1080998A1 (en) 2006-05-04
US7158082B2 (en) 2007-01-02
WO2004008573A1 (de) 2004-01-22
US20060012524A1 (en) 2006-01-19
DE50301327D1 (de) 2006-02-16
DE10231961B3 (de) 2004-02-12
CN1669181A (zh) 2005-09-14
AU2003245936A1 (en) 2004-02-02
JP4156590B2 (ja) 2008-09-24

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