DE4202009A1 - Transceiver broad-band antenna for radio identification - has phase-shifter connected to resonant-circuit capacitor and inductors wound on ellipsoid core - Google Patents

Transceiver broad-band antenna for radio identification - has phase-shifter connected to resonant-circuit capacitor and inductors wound on ellipsoid core

Info

Publication number
DE4202009A1
DE4202009A1 DE4202009A DE4202009A DE4202009A1 DE 4202009 A1 DE4202009 A1 DE 4202009A1 DE 4202009 A DE4202009 A DE 4202009A DE 4202009 A DE4202009 A DE 4202009A DE 4202009 A1 DE4202009 A1 DE 4202009A1
Authority
DE
Germany
Prior art keywords
antenna
phase
resonant
transmitting
receiving device
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Withdrawn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
DE4202009A
Other languages
German (de)
Inventor
Franz Dipl Ing Weinzierl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE4202009A priority Critical patent/DE4202009A1/en
Publication of DE4202009A1 publication Critical patent/DE4202009A1/en
Withdrawn legal-status Critical Current

Links

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
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/767—Responders; Transponders
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers

Abstract

The RF signal to be transmitted is fed a phase-shift circuit (2) consisting of effective and reactive resistors, through a connector (1). The phase-shift circuit (2) splits the RF signal into two and feeds to the resonant-circuit capacitors (3,5) which are connected to the resonant-circuit inductors (4,6). The inductor coils (4,6) are wound on an ellipsoid ferromagnetic core (7) and have a common connection point. USE - Identification of radio transceivers.

Description

Antennen, die die magnetische Komponente verwenden, haben z. B. in der Ausführung als Spule eine ausgeprägte Richtwirkung, die als sogenannte "Keule" definiert ist.Antennas using the magnetic component have e.g. B. in the Execution as a coil a pronounced directional effect, which is known as a "club" is defined.

Ein Identifikations-Funk-Sender und/oder -Empfänger muß innerhalb eines möglichst großen Raumwinkels empfangen und wieder aussenden können, muß also eine möglichst breite Keule haben.An identification radio transmitter and / or receiver must be within one To be able to receive as large a solid angle as possible and send it out again have the widest possible club.

Übliches Verfahren, um ohne besondere Antennen auszukommen, ist eine Überdimensionierung von Senderleistung und Empfängerempfindlichkeit, so daß die ganze Funkanlage auch mit Pegeln, die wesentlich geringer als der Hauptkeulen-Mitten-Pegel sind, noch funktioniert.The usual procedure to get by without special antennas is one Oversizing of transmitter power and receiver sensitivity, so that the whole radio system also with levels that are much lower than that Main lobe center levels are still working.

Um ohne diese vorgenannte Überdimensionierung auszukommen, muß man ein besonderes Antennensystem verwenden.To get by without the above-mentioned oversizing, one has to use a special antenna system.

Kreuzt man z. B. zwei parallel gespeiste Spulen so, daß deren Achsen einen Winkel einschließen, so wird die Keule gegenüber einer Anordnung mit dem Winkel 0 nicht breiter, sondern ihre Achse dreht sich in die Halbierende des genannten Winkels.If you cross z. B. two coils fed in parallel so that their axes one Include angles, so the club against an arrangement with the Angle 0 is not wider, but its axis turns into the bisector of the mentioned angle.

Erst durch eine phasenverschobene Speisung wird die Keule breiter.Only with a phase-shifted feed does the club become wider.

Erfindungsgemäß besteht ein Sende- und/oder Empfangsgerät mit einer Antenne mit verbreitertem Diagramm für Sende- und/oder Empfangsbetrieb aus 2 oder mehreren Spulen mit gemeinsamem Spulenmittelpunkt, deren Achsen gegeneinander um einen bestimmten Winkel gedreht sind und in denen phasenverschobene Antennenströme fließen.According to the invention, there is a transmitting and / or receiving device with an antenna Broadened diagram for transmission and / or reception operation from 2 or more Coils with a common coil center, their axes against each other around one certain angles are rotated and in which phase-shifted antenna currents flow.

In Abb. 1 ist ein Ausführungsbeispiel dargestellt. 1 ist der HF-Anschluß, an den im Senderbetrieb die HF-Energie eingespeist und bei Empfangsbetrieb die HF-Energie abgenommen wird. 2 ist der Phasenschieber, der im Senderfall die HF-Energie in zwei Hälften aufteilt und phasenverschoben in die beiden Antennenschwingkreise, bestehend aus Schwingkreiskondensator 3 und Schwingkreisspule 4 bzw. Schwingkreiskondensator 5 und Schwingkreisspule 6, eingespeist wird. Bei Bedarf sind beide Spulen über einen gemeinsamen ferromagnetischen Kern 7 gewickelt.In Fig. 1 an embodiment is shown. 1 is the RF connection to which the RF energy is fed in during transmitter operation and the RF energy is drawn off during receive operation. 2 is the phase shifter, which divides the RF energy into two halves in the transmitter case and is phase-shifted into the two antenna resonant circuits, consisting of resonant circuit capacitor 3 and resonant circuit coil 4 or resonant circuit capacitor 5 and resonant circuit coil 6 . If necessary, both coils are wound over a common ferromagnetic core 7 .

In Abb. 2 ist der ferromagnetische Kern z. B. als Rotationsellipsoid ausgelegt, mit 1 und 2 als Spule 1 und 2 und 3 als ferromagnetischer Kern.In Fig. 2 the ferromagnetic core is z. B. designed as an ellipsoid of revolution, with 1 and 2 as a coil 1 and 2 and 3 as a ferromagnetic core.

Eine ähnliche Anordnung ist auch möglich, bei der jede Spule auf einen eigenen ferromagnetischen Kern gewickelt ist, wobei die Kerne übereinander gestapelt sind.A similar arrangement is also possible, in which each coil is on its own ferromagnetic core is wound, the cores stacked one above the other are.

Eine ähnliche Anordnung ist auch möglich, bei der sich ferromagnetische Kerne gegenseitig durchdringen.A similar arrangement is also possible in which there are ferromagnetic cores penetrate each other.

Erfindungsgemäß kann die Phasenverschiebung zwischen den Antennenschwingkreisströmen durch eine Schaltungskombination, bestehend aus Blindwiderständen oder einer Kombination von Blind- und Wirkwiderständen erzeugt werden.According to the invention, the phase shift between the Antenna resonant circuit currents through a circuit combination consisting of Reactive resistors or a combination of reactive and effective resistors be generated.

Erfindungsgemäß ist es aber auch möglich, die Phasenverschiebung durch gegenseitige Verstimmung der Antennenresonanzfrequenzen zu erzeugen.According to the invention, however, it is also possible to carry out the phase shift generate mutual detuning of the antenna resonance frequencies.

Claims (6)

1. Sende- und/oder Empfangsgerät mit angeflanschter magnetischer Breitbandantenne, dadurch gekennzeichnet, daß die Breitbandantenne aus 2 oder mehreren Schwingkreisspulen mit gemeinsamem Mittelpunkt und gegeneinander verdrehten Spulenachsen besteht und daß die Antennenschwingkreisströme gegeneinander phasenverschoben sind.1. Transmitting and / or receiving device with flanged magnetic broadband antenna, characterized in that the broadband antenna consists of 2 or more resonant circuit coils with a common center and coil axes rotated against each other and that the antenna resonant circuit currents are phase-shifted against each other. 2. Sende- und/oder Empfangsgerät mit angeflanschter magnetischer Breitbandantenne nach Anspruch 1, dadurch gekennzeichnet, daß die Antennenspulen mit einem ferromagnetischen Kern versehen sind.2. Transmitting and / or receiving device with flanged magnetic broadband antenna according to claim 1, characterized in that the antenna coils with a ferromagnetic Are provided. 3. Sende- und/oder Empfangsgerät mit angeflanschter magnetischer Breitbandantenne nach Anspruch 2, dadurch gekennzeichnet, daß der ferromagnetische Kern ein Rotationsellipsoid ist.3. Transmitting and / or receiving device with flanged magnetic broadband antenna according to claim 2, characterized in that the ferromagnetic core is an ellipsoid of revolution is. 4. Sende- und/oder Empfangsgerät mit angeflanschter magnetischer Breitbandantenne nach Anspruch 1, dadurch gekennzeichnet, daß die Phasenverschiebung zwischen den Antennenschwingkreisströmen durch eine Schaltungs-Kombination, bestehend aus Blindwiderständen oder einer Kombination von Blind- und Wirkwiderständen, erzeugt wird.4. Transmitting and / or receiving device with flanged magnetic broadband antenna according to claim 1, characterized in that the phase shift between the antenna resonant circuit currents by a Circuit combination consisting of reactances or a combination of reactive and active resistors. 5. Sende- und/oder Empfangsgerät mit angeflanschter magnetischer Breitbandantenne nach Anspruch 1, dadurch gekennzeichnet, daß die Phasenverschiebung zwischen den Antennenschwingkreisströmen durch gegenseitige Frequenzverstimmung der Antennenschwingkreise erzeugt wird.5. Transmitting and / or receiving device with flanged magnetic broadband antenna according to claim 1, characterized in that through the phase shift between the antenna resonant circuit currents mutual frequency detuning of the antenna resonant circuits is generated. 6. Sende- und/oder Empfänger-Antenne gemäß Anspruch 1 mit 5, dadurch gekennzeichnet, daß die Antenne vom Sender/Empfänger abgesetzt ist.6. transmitter and / or receiver antenna according to claim 1 with 5, characterized in that the antenna is detached from the transmitter / receiver.
DE4202009A 1992-01-25 1992-01-25 Transceiver broad-band antenna for radio identification - has phase-shifter connected to resonant-circuit capacitor and inductors wound on ellipsoid core Withdrawn DE4202009A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4202009A DE4202009A1 (en) 1992-01-25 1992-01-25 Transceiver broad-band antenna for radio identification - has phase-shifter connected to resonant-circuit capacitor and inductors wound on ellipsoid core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4202009A DE4202009A1 (en) 1992-01-25 1992-01-25 Transceiver broad-band antenna for radio identification - has phase-shifter connected to resonant-circuit capacitor and inductors wound on ellipsoid core

Publications (1)

Publication Number Publication Date
DE4202009A1 true DE4202009A1 (en) 1993-07-29

Family

ID=6450230

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4202009A Withdrawn DE4202009A1 (en) 1992-01-25 1992-01-25 Transceiver broad-band antenna for radio identification - has phase-shifter connected to resonant-circuit capacitor and inductors wound on ellipsoid core

Country Status (1)

Country Link
DE (1) DE4202009A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717505A1 (en) * 1997-04-25 1998-11-05 Diehl Ident Gmbh Transponder communication system for identification e.g. of livestock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717505A1 (en) * 1997-04-25 1998-11-05 Diehl Ident Gmbh Transponder communication system for identification e.g. of livestock
DE19717505C2 (en) * 1997-04-25 1999-02-18 Diehl Ident Gmbh Transponder communication device

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