Radio System for Sensing Applications
First Claim
1. A radio system for spatial sensing applications, comprising:
- a transmitter operable to send a query message;
a transponder comprising at least one antenna, the transponder being operable to send a response message on receipt of the query message;
a radio frequency shield moveably interposable between the transmitter and the at least one antenna, the shield being operable to attenuate the signal strength of the query message prior to being received at the at least one antenna; and
a receiver operable to receive the response message;
wherein when the shield is interposed between the transmitter and the at least one antenna, the transponder is operable to receive the query message and the response message comprises data determined according to the signal strength of the query message received at one or more antennas.
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Accused Products
Abstract
A radio system for sensing the spatial configuration of a physical object comprising a transmitter (102) which sends a query message to a transponder (104) having at least one antenna (106). A radio frequency shield (108) is moveably interposable between the transmitter and one or more antennas and thereby attenuates the signal strength of the query message received at an antenna. In any state of spatial configuration of the physical object, the transponder is able to receive the query message and, in reply, send a response message containing data determined according to the signal strength of the query message received at the one or more antennas.
25 Citations
12 Claims
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1. A radio system for spatial sensing applications, comprising:
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a transmitter operable to send a query message;
a transponder comprising at least one antenna, the transponder being operable to send a response message on receipt of the query message;
a radio frequency shield moveably interposable between the transmitter and the at least one antenna, the shield being operable to attenuate the signal strength of the query message prior to being received at the at least one antenna; and
a receiver operable to receive the response message;
whereinwhen the shield is interposed between the transmitter and the at least one antenna, the transponder is operable to receive the query message and the response message comprises data determined according to the signal strength of the query message received at one or more antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification