EP1005101A2 - Antenne de vitre connectée au réseau chauffant par un champs à haute fréquence et à impédance élevée - Google Patents

Antenne de vitre connectée au réseau chauffant par un champs à haute fréquence et à impédance élevée Download PDF

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Publication number
EP1005101A2
EP1005101A2 EP99122902A EP99122902A EP1005101A2 EP 1005101 A2 EP1005101 A2 EP 1005101A2 EP 99122902 A EP99122902 A EP 99122902A EP 99122902 A EP99122902 A EP 99122902A EP 1005101 A2 EP1005101 A2 EP 1005101A2
Authority
EP
European Patent Office
Prior art keywords
heating
field
window
compensation
winding
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Withdrawn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
EP99122902A
Other languages
German (de)
English (en)
Other versions
EP1005101A3 (fr
Inventor
Heinz Lindenmeier
Jochen Hopf
Leopold Reiter
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.)
Fuba Automotive GmbH and Co KG
Original Assignee
Fuba Automotive GmbH and Co 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 Fuba Automotive GmbH and Co KG filed Critical Fuba Automotive GmbH and Co KG
Publication of EP1005101A2 publication Critical patent/EP1005101A2/fr
Publication of EP1005101A3 publication Critical patent/EP1005101A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers

Definitions

  • the invention relates to a window pane antenna in the window pane 23 of a motor vehicle with electrically conductive vehicle body 21.
  • the window 23 there is essentially one Rectangular or trapezoidal, with a busbar on each side 3,4 provided heating field 2 with connections for the purpose of heating current supply on both Pages introduced.
  • For the heating is one with the electrically conductive vehicle body 21 electrically connected heating direct current source 25 available.
  • Power is supplied via a each inductively high-resistance, attached near the side edge of the window pane Feed network 19, 20. With the help of the high impedance of the feed networks 19, 20 the heating field is largely insulated from the body at high frequencies, so that the heating field is opposite the vehicle body 21 can carry a high-frequency voltage.
  • the high-frequency coupling to the heating field 2 carrying the high-frequency voltage Formation of the antenna can e.g. by connecting to a busbar of the so wired Heating field.
  • the invention has for its object to supply networks with the smallest possible design even at low frequencies with sufficiently large high-frequency insulation and sufficient to design small high-frequency losses and losses in heating output.
  • the extremely high heating current 24 in the primary windings 5 and 6 of the feed networks 19 and 20 leads to saturation phenomena in the magnetic Core 9.10, which must be avoided.
  • a field compensation winding 13, 14, which is from the compensation direct current 17.18 has flowed through This is set so that at the given number of turns the field compensation winding 13, 14 compensates for the direct field in the magnetic core 9, 10 is.
  • the compensation current source 15, 16 is to be designed with a high resistance, so that the inductance the primary winding 5, 6 by switching on the compensation current source 15, 16 not is significantly reduced.
  • the field compensation winding 13, 14 can be a winding with thin wire and high number of turns are carried out, so that the product of compensation direct current 17, 18 and this number of turns the product of the heating current 24 and the number of turns of the primary winding 5, 6 corresponds.
  • the antenna 1 is as a flat or wire-shaped Conductor structure attached near the heating field 2. Thanks to high-frequency insulation of the heating field 2 with the aid of the supply networks 19, 20 forms one on the heating field 2 Receiving voltage from, which by capacitive coupling to the antenna 1 as an enlargement the reception voltage at the antenna connection point 33 affects.
  • Embodiment of the invention includes the advanced antenna circuit 32 capacitively high-resistance reinforcing element, so that by switching on the supply networks 19, 20 significantly improves the signal-to-noise ratio at the antenna connection point 33 becomes.
  • only the partial heating field closest to the antenna 1 becomes 2a supplied with heating current via supply networks 19, 20.
  • the further partial heating field 2c can be connected to the vehicle body 21 at a high frequency. An arrangement of this kind is in Fig. 1b shown.
  • FIG. 2 shows different variants for setting the correct compensation direct current 17,18 shown in the field compensation winding 13,14, so that there is sufficient compensation of magnetic fields.
  • Fig. 2a shows a measuring resistor on each side 29, the voltage generated by the heating current 24 with the voltage of a setpoint generator 30 is compared in the control device 31 and the output variable of the control device 31 the high-frequency high-impedance controllable direct current source 22 sets such that at predetermined field compensation winding 13, 14 and primary winding 5, 6 the necessary field compensation given is.
  • the controllable direct current source 22 realized by a controllable three-pole amplifier element 26 as an example.
  • the high frequency High impedance is controllable by the high impedance of the source / drain path 27 given three-pole amplifier element 26.
  • the two Field compensation windings 13,14 connected via a connecting conductor 41 so that they in Are connected in series and flowed through by the same compensation direct current 17.18.
  • the heating current 24 from the voltage connection 11 of the heating direct current source 25 to the heating field 2 supplied and the heating field 2 on the left side connected to the ground terminal 12. With this form of heating current supply, the heating current 24 flows in the heating field 2 and the compensation direct current 17, 18 in the connecting conductor 41 in the same direction from one side the window pane 23 to the other.
  • the compensation effect of the magnetic fields in the magnetic Core 9, 10 force a winding sense in such a way that when the Voltage Ua on the primary winding 5, 6 in the direction shown the secondary voltages ü1 * Ua, ü2 * Ua on the field compensation winding 13,14 each in the opposite Train direction.
  • the compensation direct current 17, 18 is appropriately corresponding a high number of turns in the field compensation winding 13,14 much smaller selected as the heating current 24, so that ü1 and ü2 are significantly larger than 1.
  • the connecting conductor 41 is designed as a conductor printed on the window pane.
  • the capacitive coupling be kept as small as possible between the connecting conductor 41 and the heating field 2, i.e. the distance between the connecting conductor 41 and the heating field 2 should be sufficiently large his.
  • a connection type as in Fig. 2e is possible such that the compensation direct current 17, 18 in the connecting conductor 41 flows in the opposite direction as the heating current 24 in the heating field 2.
  • the primary winding 5, 6 and the field compensation winding 13, 14 are associated with them compensate for magnetic fields in the magnetic core 9, 10. Which is on the primary winding 5, 6 and voltages forming on the field compensation winding 13, 14 then the same direction as shown in Fig. 2e. In this case, the capacity between the connecting conductor 41 and the heating field 2 is less harmful.
  • the connecting conductor 41 is in the form of a partial heating field, e.g. of second partial heating field 2b, as shown in FIG. 3.
  • the partial heating field 2b then has approximately the same size as the heating current 24 in the first partial heating field 2a. With this arrangement, it is necessary that both the voltage terminal 11 and the Ground connection 12 are available on both sides of the window pane. At the in Fig. 3 specified circuit form, the heating current 24 and the compensation direct current flow 17, 18 in the two adjacent partial heating fields in opposite directions to one another.
  • each field compensation winding 13, 14 of the same design raise the magnetic Fields in the magnetic core 9.10 then each.
  • the same type of delivery networks 19, 20 on both sides turns out to be a particularly advantageous solution. If the partial heating fields are of the same size and the feed networks 19, 20 are of the same design on both sides of the window pane is the capacitance Ck between the first partial heating field 2a and the second partial heating field 2b without effect on the high-frequency voltage that is formed on the primary winding 5, 6 or on the field compensation winding 13, 14.
  • FIGS. 4a and 4b show different forms of decoupling the antenna voltages shown.
  • Fig. 4a that between the primary winding 5 and the field compensation winding 13 the common magnetic core 9 transformer complemented by the coupling winding 39, which in this example has the effective capacitance Cv of the amplifying electronic component 42 is loaded in the continuing antenna circuit 32.
  • the amplified antenna signals are available at antenna connection point 33.
  • the mode of operation is the inductive RF current on both sides of the window pane 23 of the first partial heating field 35, 37 and the inductive HF current of the second partial heating field 36, 38 registered. These flow through the primary winding 5, 6 or the field compensation winding 13, 14 and generate the RF primary magnetic field 35a, 37a or that in the magnetic core 9, 10 RF secondary magnetic field 36a, 38a.
  • Primary magnetic field 35a, 37a or the RF secondary magnetic field 36a, 38a each have the same direction in the magnetic core 9, 10 and support one another the formation of the inductance for high-frequency insulation of the two partial heating fields from the vehicle body 21.
  • This type of connection for the heating current with available on both sides
  • Voltage connection 11 and ground connection 12 and in the two partial heating fields 2a and 2b oppositely directed heating currents 24 and 17 are the associated heating current primary magnetic field 24a and the compensation magnetic field 17a or 18a then opposed to each other directed and rise to the invention when choosing the appropriate number of turns Way on.
  • the voltage connections are in FIG. 4a 11 each with a through the filter choke 34b in connection with the filter capacitor 34a is supplied with a screened voltage.
  • the coupling of the antenna signals takes place, for example, to a high frequency the primary winding 5, 6 isolated first partial heating field 2a with the aid of a transformer Transmission ratio üv in the further antenna circuit 32.
  • the coupling takes place between the busbar of the first partial heating field 3a or 4a and the body 21.
  • the high-frequency voltages on the first partial heating field 2a and on the second Partial heating field 2b are the same size.
  • the transmitter could thus be in the continuing antenna circuit 32 equivalent on one of the busbars 3b, 4b of the second partial heating field 2b be connected.
  • FIG. 5 shows an equivalent circuit diagram of the entire arrangement in FIG. 4b for low frequencies, as they are especially given in the AM frequency range.
  • the first partial heating field 2a and the second partial heating field 2b are each represented by the thick lines which express that the receiving voltage of the heating fields on the left and right side of the window pane 23 are the same size.
  • the voltage Ua of the first partial heating field 2a and the voltage Ub of the second partial heating field 2b are given by the transmission ratio ü1 - by the number of turns ratio the primary winding 5, 6 to the field compensation winding 13, 14 on the right side - and over the transmission ratio ü2 - given by the turns ratio the primary winding 5, 6 to the field compensation winding 13, 14 on the left and through the excitations E * heffa for the first partial heating field 2a with its own capacity Ca and through the Excitation E * heffb determined for the second partial heating field 2b with its own capacitance Cb. Further the capacitance Ck is effective as coupling capacitance between the two heating fields.
  • connection of the transformer uv for coupling out the antenna signals Uv via the coupling winding 39 is connected in parallel with the first partial heating field 2a.
  • the self-inductances L1a Primary winding 5 and its loss factor ⁇ 1a on the right side of the window pane 23 as well the self-inductance L2a of the primary winding 6 and its loss factor ⁇ 2a on the left side significant.
  • the field compensation windings 13, 14 can also be designed like the primary windings 5, 6.
  • particularly favorable signal-to-noise ratios can be achieved at the output of the amplifying electronic component 42, taking into account a suitable value of uv under real conditions, if the total area available for the first and second partial heating fields 2a, 2b is predetermined.
  • the system is optimized by designing a sufficiently large inductance L with the smallest possible loss factor ⁇ . This is particularly important at the lower end of the frequency band for which the arrangement is designed.
  • the loss factor represents a loss conductance of the quantity ⁇ / ( ⁇ L), the noise influence of which on the parallel connection, in particular at low frequencies, significantly influences the achievable signal-to-noise ratio.
  • the signal-to-noise ratio at the output of the amplifying electronic component 42 in FIG. 5 is determined for the case, which is preferable in practice, of primary windings 5, 6 and identical field compensation windings 13, 14, which are of identical design on both sides of the window pane 23.
  • the second partial heating field 2b should be able to be designed differently from the first partial heating field 2a.
  • the resonance frequency fr results from the antenna capacitances and the capacitance Cv, including the winding capacitances and the two inductances L.
  • 2 ⁇ fr 2nd L ⁇ [ Approx + ü 2nd ⁇ Cb + (1- ü 2nd ) ⁇ Ck + üv 2nd ⁇ Cv ]

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  • Details Of Aerials (AREA)
EP99122902A 1998-11-24 1999-11-18 Antenne de vitre connectée au réseau chauffant par un champs à haute fréquence et à impédance élevée Withdrawn EP1005101A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19854169A DE19854169A1 (de) 1998-11-24 1998-11-24 Fensterscheibenantenne mit hochfrequent hochohmig angeschlossenem Heizfeld
DE19854169 1998-11-24

Publications (2)

Publication Number Publication Date
EP1005101A2 true EP1005101A2 (fr) 2000-05-31
EP1005101A3 EP1005101A3 (fr) 2002-09-25

Family

ID=7888837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122902A Withdrawn EP1005101A3 (fr) 1998-11-24 1999-11-18 Antenne de vitre connectée au réseau chauffant par un champs à haute fréquence et à impédance élevée

Country Status (3)

Country Link
US (1) US6184837B1 (fr)
EP (1) EP1005101A3 (fr)
DE (1) DE19854169A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20102324U1 (de) 2001-02-08 2001-05-03 FUBA Automotive GmbH & Co. KG, 31162 Bad Salzdetfurth Kraftfahrzeugscheibe mit Antennenstrukturen
DE10106125B4 (de) * 2001-02-08 2014-04-10 Delphi Technologies, Inc. Kraftfahrzeugscheibe mit Antennenstrukturen
DE202005008338U1 (de) * 2005-05-24 2005-12-22 Fuba Automotive Gmbh & Co. Kg Antennenkonfiguration für den Rundfunkempfang in Kfz
DE102006039357B4 (de) * 2005-09-12 2018-06-28 Heinz Lindenmeier Antennendiversityanlage zum Funkempfang für Fahrzeuge
US7696644B2 (en) * 2007-02-06 2010-04-13 Cooktek Llc Wireless power transfer system for glass
DE102007017478A1 (de) * 2007-04-13 2008-10-16 Lindenmeier, Heinz, Prof. Dr. Ing. Empfangsanlage mit einer Schaltungsanordnung zur Unterdrückung von Umschaltstörungen bei Antennendiversity
EP2037593A3 (fr) * 2007-07-10 2016-10-12 Delphi Delco Electronics Europe GmbH Installation de diversité d'antennes pour la réception radio à bande relativement large dans des véhicules
DE102007039914A1 (de) * 2007-08-01 2009-02-05 Lindenmeier, Heinz, Prof. Dr. Ing. Antennendiversityanlage mit zwei Antennen für den Funkempfang in Fahrzeugen
DE102008003532A1 (de) * 2007-09-06 2009-03-12 Lindenmeier, Heinz, Prof. Dr. Ing. Antenne für den Satellitenempfang
US8344296B2 (en) * 2007-10-10 2013-01-01 Cooktek Induction Systems, Llc Food warming device and system
DE102008011131A1 (de) 2008-02-26 2009-09-10 Bayerische Motoren Werke Aktiengesellschaft Antennenanordnung für ein Kraftfahrzeug
EP2209221B8 (fr) * 2009-01-19 2019-01-16 Fuba Automotive Electronics GmbH Installation de réception destinée à la sommation de signaux d'antennes phasés
DE102009011542A1 (de) * 2009-03-03 2010-09-09 Heinz Prof. Dr.-Ing. Lindenmeier Antenne für den Empfang zirkular in einer Drehrichtung der Polarisation ausgestrahlter Satellitenfunksignale
DE102009023514A1 (de) * 2009-05-30 2010-12-02 Heinz Prof. Dr.-Ing. Lindenmeier Antenne für zirkulare Polarisation mit einer leitenden Grundfläche

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506137A (en) * 1983-02-18 1985-03-19 Meister Jack B Temperature responsive control circuit for electric window de-fogger/deicer heater
DE3307262A1 (de) * 1983-03-02 1984-09-06 Vogt Gmbh & Co Kg, 8391 Erlau Ringkern-entstoerdrossel mit gerichtetem streufeld
DE3423205A1 (de) * 1984-06-22 1986-01-02 Gerhard Prof. Dr.-Ing. 8012 Ottobrunn Flachenecker Antenne in der heckscheibe eines kraftfahrzeugs
DE3618452C2 (de) 1986-06-02 1997-04-10 Lindenmeier Heinz Diversity-Antennenanordnung für den Empfang frequenzmodulierter Signale in der Heckscheibe eines Kraftfahrzeugs mit einem darin befindlichen Heizfeld
DE3844607C3 (de) * 1988-01-20 1997-03-13 Ver Glaswerke Gmbh Stromversorgungsschaltung für ein Kraftfahrzeug mit zwei unterschiedlichen Verbraucherspannungen
US5239302A (en) * 1988-11-22 1993-08-24 Nippon Sheet Glass Company, Ltd. Wave reception apparatus for a motor vehicle
DE4216376C2 (de) * 1992-05-18 1998-11-05 Lindenmeier Heinz Fahrzeug-Antennenanordnung mit einer Empfangsschaltung für den LMK-Bereich
CA2101820A1 (fr) * 1992-08-03 1994-02-04 Yoshinori Matsuoka Antenne de pare-brise
DE4421986A1 (de) * 1994-06-23 1996-01-04 Miele & Cie Funkentstörfilter
TW423180B (en) * 1997-01-31 2001-02-21 Terajima Fumitaka Glass antenna device for an automobile
US5933119A (en) * 1997-02-20 1999-08-03 Central Glass Company Limited Glass antenna system for vehicles
US5959587A (en) * 1997-09-12 1999-09-28 Ppg Industries Ohio, Inc. On the glass antenna system

Also Published As

Publication number Publication date
DE19854169A1 (de) 2000-05-25
EP1005101A3 (fr) 2002-09-25
US6184837B1 (en) 2001-02-06

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