WO2007128249A1 - System zur drahtlosen datenkommunikation - Google Patents
System zur drahtlosen datenkommunikation Download PDFInfo
- Publication number
- WO2007128249A1 WO2007128249A1 PCT/DE2006/000803 DE2006000803W WO2007128249A1 WO 2007128249 A1 WO2007128249 A1 WO 2007128249A1 DE 2006000803 W DE2006000803 W DE 2006000803W WO 2007128249 A1 WO2007128249 A1 WO 2007128249A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antennas
- receiver
- rxl
- receivers
- antenna
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 9
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10356—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/45—Transponders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
Definitions
- the invention relates to a system for wireless data communication, in particular for RFID (Radio Frequency Identification) application.
- RFID Radio Frequency Identification
- Such systems have been known for a long time, e.g. the technology of passive identification technology in the UHF range around 900 MHz.
- passive, i. batteryless RFID transponder powered by a high-frequency electromagnetic field, which is emitted by a read / write device, with energy.
- These transponders then send back information about the read / write device by means of modulated backscatter, so-called backscattering.
- FIG. 2 shows a system according to the invention with a circulator for the simultaneous use of an antenna at a transmitter and at a receiver
- FIG 3 shows an inventive system according to FIG 2 with a
- Totalizer for summing two antenna signals shows an inventive system according to FIG 1 with a summer for the summation of two antenna signals.
- FIG. 1 shows a transmitting and receiving station A, in particular a read / write device for RFID application (Radio Frequency Identification), and a data memory D, in particular a transponder, for wireless data communication.
- a transmitting and receiving station A in particular a read / write device for RFID application (Radio Frequency Identification), and a data memory D, in particular a transponder, for wireless data communication.
- RFID application Radio Frequency Identification
- data memory D in particular a transponder
- the transmitting and receiving station A has a transmitter TX, a plurality of receivers RX1, RX2, RX3 and a plurality of antennas 1, 2, 3, 4, one or more of which can be used selectively as a receiving antenna or transmitting antenna.
- the antennas 1, 2, 3, 4 can be selectively connected to the transmitter TX and to the receivers RX1, RX2 and RX3.
- the transmitter TX is connected to the antenna 1.
- the antenna 2 is connected to the receiver RX1, antenna 3 to the receiver RX2 and antenna 4 to the receiver RX3.
- each of the antennas 1, 2, 3, 4 can be connected in succession to the transmitter TX or to the receivers RX1, RX2, RX3 separately, so that at the same time the transmitter TX and each of the receivers RXL, RX2, RX3 is connected to only one of the antennas 1, 2, 3, 4.
- the antenna signals S2, S3, S4 of the antennas 2, 3, 4 used as receiving antenna according to FIG. 1 are fed separately to the receivers RX1, RX2, RX3 and evaluated in terms of magnitude and phase.
- a digital signal processor DSP connected to the receivers RX1, RX2, RX3 selects from the available signals the one with the best signal-to-noise ratio and decodes it. It is also possible to "superpose" individual signals and thereby possibly fill gaps in the received data telegram of a receiving antenna by the parallel data telegram of another receiving antenna. Furthermore, all available received signals can be evaluated, checked for authenticity and further processed.
- FIG. 2 shows a data communication in which, in contrast to the exemplary embodiment according to FIG. 1, only three antennas 1, 2, 3 be available.
- the antenna 1 is connected via a circulator Z both to the transmitter TX and to the receiver RX1.
- the antenna 1 can be used both as a transmitting antenna in conjunction with the transmitter TX and also as a receiving antenna in conjunction with the receiver RX1.
- the same functionality is achieved here with only three antennas as in the exemplary embodiment according to FIG. 1, in which four antennas are used. Otherwise, the structure, the operation and in particular the selectivity in the connection selection between the antennas and the transmitter and the receivers of the description of the above embodiment correspond, so that reference is made to avoid repetition.
- FIG 3 The embodiment of FIG 3 is largely consistent with that of FIG. Only two receivers RX1 and RX2 are used here, the arrangement and interconnection of receiver RX1 being unchanged from the embodiment according to FIG. However, here the two antennas 2 and 3 are connected via a summer S to the receiver RX2, which evaluates the summed antenna signals S2 and S3. Otherwise, structure, mode of action, functionality and selective connection setup correspond to the transmitting and receiving station A in the exemplary embodiment described above.
- the exemplary embodiment according to FIG. 4 further agrees with that according to FIG. 1, whereby only the summer S known from FIG. 3 is used to sum the two antenna signals S3, S4 and forward the summation signal to the receiver RX2 for evaluation.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Artificial Intelligence (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/000803 WO2007128249A1 (de) | 2006-05-10 | 2006-05-10 | System zur drahtlosen datenkommunikation |
DE112006003949T DE112006003949A5 (de) | 2006-05-10 | 2006-05-10 | System zur drahtlosen Datenkommunikation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/000803 WO2007128249A1 (de) | 2006-05-10 | 2006-05-10 | System zur drahtlosen datenkommunikation |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007128249A1 true WO2007128249A1 (de) | 2007-11-15 |
Family
ID=37698186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/000803 WO2007128249A1 (de) | 2006-05-10 | 2006-05-10 | System zur drahtlosen datenkommunikation |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112006003949A5 (de) |
WO (1) | WO2007128249A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343814A (en) * | 1995-11-29 | 2000-05-17 | Motorola Inc | Method for controlling a diversity receiver apparatus in a radio subscriber unit |
US20050130612A1 (en) * | 2003-12-15 | 2005-06-16 | Intel Corporation | Antenna selection for diversity combining |
US20050128159A1 (en) * | 2003-12-10 | 2005-06-16 | Wang James J. | RFID system with an adaptive array antenna |
WO2005091435A1 (ja) * | 2004-03-19 | 2005-09-29 | Brother Kogyo Kabushiki Kaisha | 無線タグ通信装置 |
-
2006
- 2006-05-10 WO PCT/DE2006/000803 patent/WO2007128249A1/de active Application Filing
- 2006-05-10 DE DE112006003949T patent/DE112006003949A5/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343814A (en) * | 1995-11-29 | 2000-05-17 | Motorola Inc | Method for controlling a diversity receiver apparatus in a radio subscriber unit |
US20050128159A1 (en) * | 2003-12-10 | 2005-06-16 | Wang James J. | RFID system with an adaptive array antenna |
US20050130612A1 (en) * | 2003-12-15 | 2005-06-16 | Intel Corporation | Antenna selection for diversity combining |
WO2005091435A1 (ja) * | 2004-03-19 | 2005-09-29 | Brother Kogyo Kabushiki Kaisha | 無線タグ通信装置 |
EP1727235A1 (de) * | 2004-03-19 | 2006-11-29 | Brother Kogyo Kabushiki Kaisha | Kommunikationsvorrichtung mit drahtlosen etiketten |
Also Published As
Publication number | Publication date |
---|---|
DE112006003949A5 (de) | 2009-04-16 |
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