Classifications

• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
  • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
  • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
  • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• • 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

Definitions

• the invention relates to a Tranepondertag containing a matching network comprising a transponder IC and a circuit structure, an electromagnetically coupled to the matching network radiator and an insulating circuit carrier for receiving the matching network and the radiator.
• Radio Frequency Identification Radio Frequency Identification
• a transponder the system component that must be attached to the object
• a transponder With a minimum Expense the largest possible range can be achieved.
• Older systems work with a low frequency range of a few kHz (eg 125kHz) up to a few MHz (13.56MHz). These systems couple the communication of the reading station and transponder with the magnetic field because of the large wavelength. The range is correspondingly low.
• a significant increase in the range can be achieved with the transition to the UHF range (860 / 915MHz) or the microwave range (2.4GHz) Here, the wavelengths 30cm and 12.5cm.
• the antennas are correspondingly smaller and the propagation as an electromagnetic wave is given in much smaller distances, so that the range is also greater.
• T5 is the basic structure of a transponder unit, consisting of an IC, which is designed for wireless communication, a feed circuit substrate, on which a supply circuit is applied, which consists essentially of an inductive conductor loop and possibly a capacitance, with which both components are connected to a resonant circuit and a radiation plate, which is substantially magnetically coupled to the resonant circuit.
• a transponder tag which has an adaptation network with a transponder IC and a circuit structure on the one hand and a radiator coupled to the matching network on the other hand.
• Emitters are on a common flat side of a formed as a substrate film insulating circuit substrate arranged.
• the circuit structure of the matching network serves as a primary antenna, while the radiator serves as a secondary antenna.
• the primary antenna and the secondary antenna thus extend in a common plane, wherein by spacing the same in the direction of extent of the substrate film, an adaptation with respect to the resonance frequency of the resonant circuit thus formed takes place.
• a disadvantage of the known transponder tag is that the resonance curve is relatively narrow-band, so that the reading characteristics in the case of environmental influences, such as changes in the weather, can deteriorate.
• the object of the present invention is therefore to develop a transponder tag in such a way that high reading ranges are achieved in the UHF range on simple heights, wherein an increased broadbandity is given and stable transmission properties are ensured.
• the invention in connection with the preamble of claim 1, characterized in that on a first side of the circuit substrate, the matching network is arranged that on a second side of the circuit substrate a plurality of radiators are arranged such that a first portion of the
• Emitter covers at least a portion of the circuit structure, and that the circuit structure and the respective radiators are each not electrically connected to each other.
• a particular advantage of the invention is that a transponder tag is created which has both a high reading range and stable transmission characteristics that are largely independent of environmental influences.
• the invention provides, on the one hand, the arrangement of a plurality of radiators (secondary antennas), which with respect to a
• Extension plane of the insulating circuit substrate are arranged overlapping to a circuit structure (primary antenna) of a matching network.
• the coupling between the radiators on the one hand and the circuit structure on the other hand or the adaptation to the desired resonant frequency takes place decisively by a distance formed in the transverse direction to the extent of the circuit carrier, which is determined by selecting or designing the transverse extent of the circuit carrier.
• the best transmission characteristics are achieved when one subarea of the radiators and one subarea of the circuit structure are in alignment with one another, the distance between the corresponding subregions being determined by the thickness of the
• Circuit carrier and optionally further insulating layers is specified.
• the circuit carrier thickness can thus be used to adjust the capacitance of the resonant circuit.
• the matching network is directly on a first flat side and the radiators are directly on an opposite th flat side of the same circuit board arranged.
• Oer circuit carrier is thus provided on both sides with electrical components.
• this can ensure a compact construction.
• an improved rollability for integration of the transponder tag in a hollow cylinder is made possible.
• the circuit carrier may comprise a plurality of substrate foils extending parallel to one another, the circuit structure being arranged on the first flat side thereof and the radiators being arranged on the second flat side thereof.
• the number of radiators per circuit structure can thereby be increased, which leads to improved transmission properties.
• the circuit carrier which extends between a plane receiving the matching network and a circuit carrier receiving the plane may consist of one or more sub-films.
• one of these substrate films can serve to accommodate further electrical components.
• the capacitance height adjustment is effected by the material of these substrate films or by the thickness thereof.
• FIG. 1 shows a plan view of a transponder tag according to a first embodiment
• FIG. 2 shows a longitudinal section through the transponder tag according to FIG. 1,
• FIG. 4 shows a longitudinal section through a transponder with an additional component
• FIG. 5a shows a top view of a matching network
• FIG. 5b shows a plan view of a transponder tag according to a further embodiment
• FIG. 5c shows a plan view of a transponder tag according to a further embodiment
• FIG. 5d shows a plan view of a transponder tag according to a further embodiment
• Figure 5e is a perspective view of a
• FIG. 5f shows a plan view of a transponder tag according to a further embodiment
• Figure 5g is a plan view of a Tranepondertag according to another embodiment
• Figure 5h is a plan view of a Tranepondertag according to another embodiment.
• a transponder tag 1 consists essentially of a matching network 2 and a number of radiators 3, 3 '.
• the matching network 2 has a transponder IC 4 (chip) and a circuit structure 5 (primary antenna).
• the primary antenna 4 is square or square.
• the matching network 2 is arranged on a first flat side 6 of an electrically insulating circuit carrier 7.
• the circuit carrier 7 may for example be formed as a flexible substrate film on which the matching network 2 is applied by printing or by etching.
• the secondary antennas 3, 3 'applied by, for example, imprints are opposite second flat side 8 of the substrate film 7, the secondary antennas 3, 3 'applied by, for example, imprints.
• the secondary antennas 3, 3 'each have a surface conductor section 9 and a loop conductor section 10, which extend in a common plane, wherein the loop conductor section 10 is arranged on an inner side facing the circuit structure 5.
• One End of the loop conductor portion 10 forms a first portion 11 of the secondary antennas 3, 3 ', which covers a portion 12 of the Priraärantenne 5.
• the adjustment of the capacitance for the resonant frequency of the resonant circuit of the transponder tag 1 is thus essentially determined by the material of the suberate film 7 and the thickness d of the suberate film 7.
• the first subarea 11 of the radiators 3, 3 ', on the one hand, and the subarea 12 of the circuit structure 5, on the other hand, are arranged in alignment with one another, that is, with the formation of a distance d in the transverse direction to the extension of the substrate foil 7 or the matching network 2.
• the secondary antennas 3, 3 ' have the same shape, the ends 11 of which are each arranged congruently one above the other with opposite ends 12 of the primary antenna.
• the first radiator 3, the second radiator 3 'and the circuit structure 5 are not electrically connected to each other. There is only one electromagnetic Coupling between the radiators 3, 3 'on the one hand and the circuit structure 5 on the other hand to form a required for the transmission of the resonant frequency.
• the matching network 2 is located on a first side 13 and the secondary antennas 3, 3 'on a second side 14 of the circuit carrier 7.
• a circuit carrier 15 can also be formed by two substrate films 16, 16 '.
• the additional substrate film 16 ' can serve, for example, for receiving a further electrical component 17.
• the resonance adaptation takes place - as in the preceding embodiment - by a spacing d 'in the transverse direction to the substrate film 16, 16' of the secondary antennas 3, 3 'on the one hand to the primary antenna 5 on the other.
• circuit carriers 18 can be connected on both flat sides of the matching network 2, on whose side facing away from the matching network 2 the radiators 3, 3 'and the radiators 3 ", 3'" are connected , This results in an arrangement with four secondary antennas 3, 3 ', 3'',3''', which leads to an improved transmission performance.
• the following statements relate to the other figures 5a to 5h.
• the invention provides a transponder tag which consists of a carrier with an applied circuit structure and a transponder IC and with at least two magnetically coupled emitters (antennas), the circuit structure being mounted on a flexible carrier (1-100) and the emitter ( 1-200) consists of at least two separate bodies, which are arranged in different positions near the circuit structure and form at least two electric fields and are not galvanically connected to the circuit structure.
• radiators consist of an organic structure or as a wire body (1-400) or solid (1-500) are formed.
• the radiators are formed as a surface. The respective ends are coupled to the circuit structure via an electromagnetic field.
• the radiator can also be designed as a planar spiral.
• the circuit structure is additionally operated in a resonance.
• the radiator (1-700) can be glued onto metal.
• the Spotlights (1-800) should also be glued over the entire surface to metal.
• One of the applications is the complete injection or pouring of the circuit structure and the radiator in elastic or solid plastic. This makes it possible to produce particularly small and powerful structures in which the transponder function is implemented. Alternatively, the transponder day can also be introduced into a solid envelope.
• the transponder tag may be formed bent about its longitudinal axis or about its transverse axis so that it can be bent, potted or sprayed or enveloped.

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• Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Near-Field Transmission Systems (AREA)
• Details Of Aerials (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2011
  • 2011-03-23 DE DE202011004331U patent/DE202011004331U1/de not_active Expired - Lifetime
• 2012
  • 2012-03-23 CN CN2012800145245A patent/CN103430195A/zh active Pending
  • 2012-03-23 WO PCT/DE2012/000305 patent/WO2012126461A1/de active Application Filing
  • 2012-03-23 EP EP12722064.8A patent/EP2697746A1/de not_active Withdrawn

Non-Patent Citations (1)

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