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1. WO2000039604 - REMOTE-INQUIRY SURFACE ACOUSTIC WAVE COMPONENT WITH OPTIMUM CODE SPACE

Publication Number WO/2000/039604
Publication Date 06.07.2000
International Application No. PCT/DE1999/004079
International Filing Date 22.12.1999
Chapter 2 Demand Filed 09.05.2000
IPC
G01S 13/75 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
75using transponders powered from received waves, e.g. using passive transponders
G01S 13/76 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
76wherein pulse-type signals are transmitted
G01S 13/79 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
79Systems using random coded signals or random pulse repetition frequencies
G06K 19/067 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards
H03H 9/42 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
30Time-delay networks
42using surface acoustic waves
H03H 9/64 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
46Filters
64using surface acoustic waves
CPC
H03H 9/6406
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
46Filters
64using surface acoustic waves
6406Filters characterised by a particular frequency characteristic
H04B 1/70712
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
69Spread spectrum techniques
707using direct sequence modulation
70712with demodulation by means of convolvers, e.g. of the SAW type
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE/DE]; Wittelsbacherplatz 2 D-80333 München, DE (AllExceptUS)
  • VOSSIEK, Martin [DE/DE]; DE (UsOnly)
  • SCHMIDT, Frank [DE/DE]; DE (UsOnly)
  • SCZESNY, Oliver [DE/DE]; DE (UsOnly)
  • REINDL, Leonhard [DE/DE]; DE (UsOnly)
Inventors
  • VOSSIEK, Martin; DE
  • SCHMIDT, Frank; DE
  • SCZESNY, Oliver; DE
  • REINDL, Leonhard; DE
Common Representative
  • SIEMENS AKTIENGESELLSCHAFT; Postfach 22 16 34 D-80506 München, DE
Priority Data
198 60 058.523.12.1998DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) FUNKABFRAGBARES OBERFLÄCHENWELLEN-BAUELEMENT MIT OPTIMALEM CODEUMFANG
(EN) REMOTE-INQUIRY SURFACE ACOUSTIC WAVE COMPONENT WITH OPTIMUM CODE SPACE
(FR) COMPOSANT A ONDES DE SURFACE INTERROGEABLE A DISTANCE ET AYANT UN ECARTEMENT CODE OPTIMAL
Abstract
(DE)
Es wird ein Codierungsschema angegeben, das vergleichsweise zum Stand der Technik bei gleich großer Strukturauflösung ($i(D)) des Systems einen vergrößerten Codeumfang bei gleicher Codeelemente-Anzahl ermöglicht bzw. mit dem bei vorgegebenem Codeumfang weniger Codeelemente je Code erforderlich sind. Die Codeelemente (Reflektoren (21) oder Resonatoren (220)) sind in einem neuartig definierten Raster (30) mit Grundwerten angeordnet, wobei dieses Raster eine feinere Einteilung ($i(d)) der Grundwerte (130) hat, als dies der Strukturauflösung ($i(D)) entspricht. Weiterentwicklung mit Mittelwertsbildungen.
(EN)
The invention provides a coding scheme which compared to the prior art has a larger code space at the same structural dissolution ($g(D)) of the system with the same number of code elements or in which less code elements per code are required at a predetermined code space. The code elements (reflectors (21) or resonators (220)) are arranged in a novel defined grid system (30) with basic values. Said grid system has a finer division ($g(d)) of the basic values (130) than according to the structural dissolution ($g(D)). An embodiment of the invention relates to a method of averaging.
(FR)
L'invention concerne un schéma de codage qui, par rapport à l'état de la technique, a un écartement code plus grand pour une résolution de structure ($i(D)) identique du système et avec le même nombre d'éléments code ou qui nécessite moins d'éléments code par code pour un écartement code prédéterminé. Les éléments code (réflecteurs (21) ou résonateurs (220)) sont disposés dans un nouveau genre de trame (30) avec des valeurs de base. Cette trame présente une division des valeurs de base (130) plus fine que selon la résolution de structure. Un mode de réalisation de l'invention concerne un procédé de génération de valeurs moyennes.
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