EP1312136B1 - Verkürzter schleifen-dipol und schleifen-monopol - Google Patents
Verkürzter schleifen-dipol und schleifen-monopol Download PDFInfo
- Publication number
- EP1312136B1 EP1312136B1 EP00979586A EP00979586A EP1312136B1 EP 1312136 B1 EP1312136 B1 EP 1312136B1 EP 00979586 A EP00979586 A EP 00979586A EP 00979586 A EP00979586 A EP 00979586A EP 1312136 B1 EP1312136 B1 EP 1312136B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dipole
- arrangement according
- monopole
- length
- lambda
- 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
Links
Images
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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/32—Vertical arrangement of element
- H01Q9/36—Vertical arrangement of element with top loading
-
- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
Definitions
- the invention relates to a loop dipole (folded dipole) or loop monopole.
- a loop or Faltdipol consists of two tight adjacent lambda / 2 dipoles connected at the ends are, of which only one is fed. On the Dipoles sets the same current direction. Both Dipoles support their effect. By different thicknesses of the two dipoles can over Transformative effects affects the input impedance become.
- loop monopole the half loop dipole can be understood on a leading level and of two Lambda / 4 long dipoles exists, which in turn are dense arranged adjacent and at the top with each other are connected.
- Such loop dipoles or Loop monopoles at a conductive level are called transmit and Receiving antennas in the short and ultra short wave range in various embodiments used.
- An inventive loop dipole or loop monopole can be extremely shortened, for example to only 5 to 6% the operating wavelength at the lowest operating frequency, so that the mechanical length of a loop dipole for a Operating frequency of 1.5 MHz only a mechanical length of 10 to 12 meters. Nevertheless, that is Radiation resistance still sufficiently large and larger than 10 Ohm.
- Such an inventive Loop dipole almost the same good properties as a usual lambda / 2 dipole.
- Experiments have shown that too the efficiency of the radiating antenna part of a antenna according to the invention without losses of Adjustment elements and earth losses at 1.8 MHz more than 50% and at 3.6 MHz more than 80%, so too in this regard, same characteristics as one Lambda / 2 dipole can be achieved.
- Loop dipole or loop monopole very much simple and inexpensive, since at the ends only a non-radiating line piece of appropriate length is set. Geometrically complicated roof capacities in Shape of stretched wires or complicated Shortening coils in the dipole are avoided. The usage a non-radiating line piece to compensate for Radiator cut is also because of the low losses Such features particularly advantageous.
- the inventive arrangement is especially suitable for Construction of multi-band antennas that are easy in the Frequency can be switched.
- An inventive vertical dipole can also because of its small length At relatively low frequencies, a flat radiation produce. The field strength of the antenna is in the near field down relatively low, so that the strict provisions simply satisfied for the operation of such transmitter antennas can be.
- the principle of the invention can be used in all conventional known forms of loop dipoles and loop monopolies be applied, both in radiating simple dipoles as well as reflectors or directors of more complex ones Antenna arrangements, as well as logarithmic periodic Antennas with such loop dipoles or Loop monopoles are constructed. Also existing antennas can be supplemented according to the principle of the invention or with be rebuilt at low cost. Since the assigned non-radiating line pieces Switching devices are easily remote controlled, can be an antenna consisting of several loop dipoles not only on optimal radiation resistance, but also on optimal reflection factor or direction factor be matched.
- FIG. 1 shows schematically a device according to the invention Loop dipole, which is operated as a horizontal radiator. He consists of two strong compared to the nominal length lambda / 2 shortened parallel dipole radiators 1 and 2, in the small distance of small lambda / 20 parallel are arranged side by side and of which only one Dipole radiator 1 is fed in the middle.
- this Dipole radiator 1, 2 is each a non-radiating Line piece turned on, either in the form of a Parallel wire air line 3, as for the right Dipolende is shown, or in the form of a unbalanced coaxial cable 4, as shown on the left end of the Dipole is shown.
- the length Lx of this non-radiating Line piece 3 or 4 is chosen so that under Consideration of the line piece associated Shortening factor (depending on the dielectric of the line 3 or the coaxial cable 4) of the loop dipole in total again reaches its desired length of lambda / 2.
- Loop monopoles are applied, which are two opposite the desired length of lambda / 4 strongly shortened parallel Monopolies 5 and 6 exist and at a senior level 7 are arranged. They represent one half of one Loop dipole, which is mirrored at the conductive level 7 becomes.
- the Monopolstrahler 5, 6 with respect to Wavelength shortens greatly and be passed through to the upper ends connected non-radiating line piece. 8 electrically extended, as shown in Figure 2 again by a Coaxial cable is indicated.
- the non-radiating line pieces 3, 4 and 8 can be housed mechanically in a small housing 30, that according to FIG. 5 at the dipole ends or in the dipole center is appropriate. After such loop dipoles or Loop monopolies usually for transformer reasons anyway one of the radiators is designed as a hollow tube, Also, the additional non-radiating conductor piece can simply be housed in this hollow tube. At higher Frequencies that cause a short circuit inside the hollow tube require that is accommodated within the hollow tube, non-radiating line piece via an additional Extension line with the outside of the hollow tube attached actual switching device connected to this Extension line is either lambda / 2 or lambda or a multiple of lambda long. This can be the real thing For example, switching in the central housing 30 be carried out while the non-radiative Line piece is mounted in the hollow tube. In some cases, especially when using air ducts, one can additional shielding of the non-radiating line sections be beneficial.
- FIG. 3 shows a loop dipole according to the invention can be switched to several frequency ranges. Over a suitable switching means can at the ends of the Loop dipoles of different lengths non-radiating Line pieces are turned on.
- Relay switch 10 and 11 at predetermined intervals in the non-radiative and in this embodiment as Two-wire line shown line piece turned on are.
- This line piece is in the embodiment from three line pieces of length L1, L2 and L3. If both Switches 10 and 11 shown in the figure 3 Take position a, only the line piece L1 is on turned on the radiating part 1,2 of the loop dipole, which corresponds to an operating frequency f1.
- Figure 4 shows another possibility for such Frequency switching of the antenna, the relay switches are in This embodiment by filter circuits 13 and 14th replaced, consisting of a series resonant circuit and two Parallel resonant circuits exist and those on the corresponding operating frequencies f1 and f2 are tuned. This is an automatic multi-band operation without switching such an antenna possible.
- VSWR VSWR
- the antenna better to the impedance of the source or the It may be advantageous to adapt the consumer fed part 1 or 5 of the loop dipole of Fig. 1st or the loop monopole of FIG. 2 of several parallel emitters, using a relay switching matrix can then be switched so that the Transformation ratio in discrete steps over one wide range and to the source or the Consumer can be adjusted.
- 3 such parallel radiators can by corresponding switching the transformation ratio be switched between 1: 4 over 1: 9 to 1:16.
- Feed point to a leading to the transmitter or receiver Feeder cables can be commercially available Antennenanpallonstechnik to be used. It has proved to be particularly advantageous Multi-band operation proved this, a matching circuit after Figure 5 to use, consisting of two cascaded 1: 4 transformers 20, 21 is made, their taps each via series resonant circuits 22 to 25 with the feed points 26, 27 of the loop dipole are connected.
- the Nominal resonant frequency of these series resonant circuits 22 to 25 corresponds in each case to the middle of the useful bands to which the Loop dipole should be switchable.
- About one Symmetrierübertrager 28 (Balun) are the transformer 20, 21st connected to the supply cable 29.
- the impedance of the Transformer to the respective taps is corresponding the real part of the radiation resistance chosen for the first tap, via the series resonant circuit 22 with the For example, this real part is 12.5 Ohm, for the second tap 50 ohms, for the third Tapping 100 ohms and for the total cascade of the two Transformers 200 ohms.
- the imaginary part of the antenna impedance is due to a slight detuning of the series 22 to 25 compensated. In this way, a desired Comply with VSWR of less than 2.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Aerials With Secondary Devices (AREA)
Description
Claims (17)
- Schleifendipol-Anordnung mit zwei gegenüber der Soll-Länge (Lambda/2) stark verkürzten Dipolstrahlern (1, 2), die an ihren beiden Enden durch ein nichtstrahlendes Leitungsstück (3, 4) elektrisch verlängert sind.
- Schleifenmonopol-Anordnung auf leitender Ebene mit zwei gegenüber der Soll-Länge (Lambda/4) stark verkürzten Monopolstrahlern (5, 6), die an ihren von der leitenden Ebene (7) abgewandten Enden durch ein nichtstrahlendes Leitungsstück (8) elektrisch verlängert sind.
- Anordnung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Länge (L) der Dipol- bzw. Monopol-Strahler (1, 2; 5,6) jeweils nur 5 bis 10%, vorzugsweise nur 6% der Wellenlänge (Lambda) der tiefsten Betriebsfrequenz gewählt ist. - Anordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das nichtstrahlende Leitungsstück (3, 4, 8) in einer elektromagnetischen Abschirmung untergebracht ist. - Anordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das nichtstrahlende Leitungsstück eine am Ende kurzgeschlossene Paralleldrahtleitung (3) ist. - Anordnung nach einem der vorhergehenden Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß das nichtstrahlende Leitungsstück ein am Ende kurzgeschlossenes Koaxialkabel (4, 8) ist, dessen Innenleiter mit dem einen (1 bzw. 5) und dessen Außenleiter mit dem anderen (2 bzw. 6) Dipol- bzw. Monopol-Strahler verbunden ist. - Anordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das nichtstrahlende Leitungsstück (3, 4, 8) auf zwei oder mehr unterschiedliche Längen (L1, L2, L3) umschaltbar ist. - Anordnung nach Anspruch 7,
dadurch gekennzeichnet, daß die Längenumschaltung mittels dem Leitungsstück zugeordneter Relaisschalter (10, 11) erfolgt. - Anordnung nach Anspruch 7 oder 8,
dadurch gekennzeichnet, daß die Längenumschaltung mittels zwischengeschalteter auf unterschiedliche Resonanzfrequenzen abgestimmter Filterschaltungen (13, 14) erfolgt. - Anordnung nach Anspruch 7 bis 9,
dadurch gekennzeichnet, daß die Längen der unterschiedlich langen Leitungsstücke (L1, L2, L3) binär abgestuft sind. - Anordnung nach Anspruch 7 bis 10,
dadurch gekennzeichnet, daß die Abstimmschrittweite der Leitungsstücke entsprechend der gewünschten Stehwellenverhältnis-Bandbreite der Antenne gewählt ist. - Anordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß sie als Sende- und/oder Empfangs-Antenne, Reflektor oder Direktor benutzt wird. - Anordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Längenschalteinrichtung in einem am Dipol bzw. Monopol angebrachten Gehäuse (30) eingebaut sind. - Anordnung nach einem der vorhergehenden Ansprüche, bei dem mindestens ein Dipol- bzw. Monopol-Strahler als Hohlrohr ausgebildet ist,
dadurch gekennzeichnet, daß das nichtstrahlende Leitungsstück in dem Hohlrohr untergebracht ist. - Anordnung nach Anspruch 13 und 14,
dadurch gekennzeichnet, daß das im Hohlrohr untergebrachte nichtstrahlende Leitungsstück über eine Lambda/2- bzw. n x Lambda-lange Verlängerungsleitung mit der Längenschalteinrichtung verbunden ist. - Anordnung nach einem der vorhergehenden Ansprüche 7 bis 15,
gekennzeichnet durch eine Anpaßschaltung mit einem Übertrager (20, 21), der mehrere Anzapfungen aufweist, die jeweils über Serienresonanzkreise (22 bis 25) mit den Anschlüssen (26, 27) des Dipols bzw. Monopols verbunden sind und deren Resonanzfrequenzen entsprechend den aufeinanderfolgenden Nutzbändern gewählt sind und die außerdem so bemessen sind, daß der Imaginärteil der jeweils wirksamen Dipol- bzw. Monopol-Impedanz kompensiert wird. - Anordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der gespeiste Dipol- bzw. Monopol-Strahler (1) bzw. (5) aus mehreren parallelen Strahlern besteht und das Transformationsverhältnis am Speisepunkt über eine diesen parallelen Strahlern zugeordnete Schalteinrichtung umschaltbar ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10040794A DE10040794A1 (de) | 2000-08-21 | 2000-08-21 | Schleifen-Dipol bzw. -Monopol |
| DE10040794 | 2000-08-21 | ||
| PCT/EP2000/011402 WO2002017433A1 (de) | 2000-08-21 | 2000-11-16 | Verkürzte schleifen-dipol und schleifen-monopol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1312136A1 EP1312136A1 (de) | 2003-05-21 |
| EP1312136B1 true EP1312136B1 (de) | 2005-02-23 |
Family
ID=7653131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00979586A Expired - Lifetime EP1312136B1 (de) | 2000-08-21 | 2000-11-16 | Verkürzter schleifen-dipol und schleifen-monopol |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6947007B1 (de) |
| EP (1) | EP1312136B1 (de) |
| JP (1) | JP4719404B2 (de) |
| DE (2) | DE10040794A1 (de) |
| WO (1) | WO2002017433A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006034559A1 (de) * | 2006-07-26 | 2008-02-14 | Infineon Technologies Ag | Antennenanordnung und Verfahren zum Empfangen und Senden von Signalen in einem ersten Frequenzbereich und in einem zweiten Frequenzbereich |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4871516B2 (ja) * | 2004-05-18 | 2012-02-08 | パナソニック株式会社 | アンテナ装置およびアンテナ装置を用いた無線機 |
| JP4711692B2 (ja) * | 2005-02-01 | 2011-06-29 | 富士通株式会社 | メアンダラインアンテナ |
| JP4645351B2 (ja) * | 2005-03-18 | 2011-03-09 | 株式会社豊田中央研究所 | 周期構造を有するアンテナ |
| JP2007104413A (ja) * | 2005-10-05 | 2007-04-19 | Toshiba Tec Corp | 近傍通信用アンテナ装置 |
| US8294631B2 (en) * | 2009-07-08 | 2012-10-23 | Lockheed Martin Corporation | Antenna with a bent portion |
| JP5523466B2 (ja) * | 2009-08-28 | 2014-06-18 | 株式会社エヌエイチケイアイテック | アンテナ |
| JP2012085092A (ja) * | 2010-10-12 | 2012-04-26 | Panasonic Corp | 無線装置 |
| US8860617B1 (en) * | 2011-07-08 | 2014-10-14 | Trivec-Avant Corporation | Multiband embedded antenna |
| JP6387984B2 (ja) * | 2016-02-24 | 2018-09-12 | 三菱電機株式会社 | アンテナ装置 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE220358A (de) * | 1940-07-20 | |||
| US2417793A (en) * | 1944-08-01 | 1947-03-18 | Rca Corp | Antenna |
| DE864707C (de) * | 1950-11-28 | 1953-01-26 | Hans Schieren | Ultrakurzwellen-Falt-Dipol-Antenne |
| DE1667293U (de) * | 1952-08-25 | 1953-11-19 | Anton Kathrein Fabrik Elektrot | Faltdipol. |
| FR2279233A1 (fr) * | 1974-07-18 | 1976-02-13 | France Etat | Doublet replie epais raccourci |
| US4235271A (en) * | 1979-07-13 | 1980-11-25 | The Goodyear Tire & Rubber Company | Tire sidewall protector shield assembly |
| JPS5614730A (en) * | 1979-07-16 | 1981-02-13 | Matsushita Electric Ind Co Ltd | Receiver |
| JPS6085603A (ja) * | 1983-10-17 | 1985-05-15 | Dx Antenna Co Ltd | Uhf及びvhf共用アンテナ |
| US5568155A (en) * | 1992-12-07 | 1996-10-22 | Ntt Mobile Communications Network Incorporation | Antenna devices having double-resonance characteristics |
| US5886669A (en) * | 1995-05-10 | 1999-03-23 | Casio Computer Co., Ltd. | Antenna for use with a portable radio apparatus |
| JP3173711B2 (ja) * | 1995-09-01 | 2001-06-04 | 株式会社ヨコオ | 伝送線路型アンテナ及び無線端末 |
| JPH10135761A (ja) * | 1996-10-24 | 1998-05-22 | Taiyo Musen Kk | ダイポール空中線整合器 |
| US6028564A (en) * | 1997-01-29 | 2000-02-22 | Intermec Ip Corp. | Wire antenna with optimized impedance for connecting to a circuit |
| US6097347A (en) * | 1997-01-29 | 2000-08-01 | Intermec Ip Corp. | Wire antenna with stubs to optimize impedance for connecting to a circuit |
| US6204824B1 (en) * | 1998-09-22 | 2001-03-20 | Recoton Corporation | Collapsible folded dipole antenna |
-
2000
- 2000-08-21 DE DE10040794A patent/DE10040794A1/de not_active Withdrawn
- 2000-11-16 JP JP2002521395A patent/JP4719404B2/ja not_active Expired - Fee Related
- 2000-11-16 DE DE50009609T patent/DE50009609D1/de not_active Expired - Lifetime
- 2000-11-16 US US10/362,499 patent/US6947007B1/en not_active Expired - Fee Related
- 2000-11-16 WO PCT/EP2000/011402 patent/WO2002017433A1/de not_active Ceased
- 2000-11-16 EP EP00979586A patent/EP1312136B1/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006034559A1 (de) * | 2006-07-26 | 2008-02-14 | Infineon Technologies Ag | Antennenanordnung und Verfahren zum Empfangen und Senden von Signalen in einem ersten Frequenzbereich und in einem zweiten Frequenzbereich |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004507193A (ja) | 2004-03-04 |
| DE10040794A1 (de) | 2002-03-07 |
| DE50009609D1 (de) | 2005-03-31 |
| WO2002017433A1 (de) | 2002-02-28 |
| JP4719404B2 (ja) | 2011-07-06 |
| US6947007B1 (en) | 2005-09-20 |
| EP1312136A1 (de) | 2003-05-21 |
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