Transponder
1 Assignment
0 Petitions
Accused Products
Abstract
A transporter is provided for use in particular with microwave or millimetric wavelength electromagnetic radiation, and includes a retro-reflecting arrangement and a modulating arrangement, in which the modulating arrangement is operable, by a current-induced field, to apply a predetermined type of pattern of modulation to incident microwave or millimetric wavelength electromagnetic radiation passing therethrough, before and/or after the incident radiation is reflected by the retro-reflecting arrangement. When used in combination with an interrofator unit, a particular type or pattern of modulation applied by the transponder may be detected in order to extract information represented in the modulation.
96 Citations
38 Claims
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1-19. -19. (canceled)
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20. A transponder, comprising:
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a retro-reflecting arrangement; and a modulating arrangement, wherein the modulating arrangement is operable, by a current-induced field, to apply a predetermined type or pattern of modulation to incident microwave or millimetric wavelength electromagnetic radiation passing therethrough, at least one of before and after the incident radiation is reflected by said retro-reflecting arrangement. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An apparatus comprising:
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at least one transponder including; a retro-reflecting arrangement; and a modulating arrangement, wherein the modulating arrangement is operable, by a current-induced field, to apply a predetermined type or pattern of modulation to incident microwave or millimetric wavelength electromagnetic radiation passing therethrough, at least one of before and after the incident radiation is reflected by said retro-reflecting arrangement; and an interrogator unit operable to receive a signal modulated by said at least one transponder and to detect one of a type of modulation and a pattern of modulation therein. - View Dependent Claims (37, 38)
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Specification