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EP0343034A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Radio system for data transmission with a passive terminal station

Assignee: Orange SA
•
Filing: 1989-05-03
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Granted: —
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Expires: 2009-05-03
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Abstract

Abstract Translated from French Le système radio selon l'invention comprend une station centrale (1) et une station terminale (2) ou extrémité passive. Des signaux de données (D12, D21) sont transmis entre des unités de traitement de données (U1, U2) respectivement connectées aux stations centrale et terminale. Le système radio est essentiellement caractérisé en ce que la station terminale comprend une antenne plane carré (20) et un commutateur micro-onde (23) pour moduler en phase par un signal de données (D21) une micro-onde (PP) émise de la station terminale vers le station centrale. Cette micro-onde modulée en phase est produite à partir d'une micro-onde incidente (P) émise par la station centrale et délivrée à la station terminale par l'antenne plane carrée. La station terminale est de conception très simple et peu encombrante et peut être incluse ainsi que l'unité de traitement de données correspondante dans une carte à puce sans contact. The radio system according to the invention comprises a central station (1) and a terminal station (2) or passive end. Data signals (D12, D21) are transmitted between data processing units (U1, U2) respectively connected to the central and terminal stations. The radio system is essentially characterized in that the terminal station comprises a square planar antenna (20) and a microwave switch (23) for modulating in phase by a data signal (D21) a microwave (PP) emitted from the terminal station to the central station. This phase-modulated microwave is produced from an incident microwave (P) emitted by the central station and delivered to the terminal station by the square planar antenna. The terminal station has a very simple and space-saving design and can be included together with the corresponding data processing unit in a contactless smart card.

Inventors

  • 👤 Jean Guena
  • 👤 Jean-Claude Leost
  • 👤 Sylvain Meyer

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 22:55
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10009; G06K7/10316; G06K7/10346; B; B07; B07C; B07C3/00; B07C3/10; B07C3/12; G01; G01S; G01S13/00; G01S13/74; G01S13/75; G01S13/751; G01S13/758; G01S13/82; G01S13/825; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/07749; G06K19/07773; G06K19/07786

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US4075632A Cited
EP0198642A2 Cited
EP0247612A2 Cited
EP0308964A2 Cited

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