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US 10,374,320 B2Granted
Electromagnetic signal focusing structures
AssigneeKeyssa Systems, Inc.
InventorsDennis F. Rosenauer, Giriraj Mantrawadi
Life of this patent
Estimating the term…
Abstract
Embodiments discussed herein refer to systems and structures for focusing dispersal of electromagnetic signals. Focusing of the electromagnetic signals is achieved by a reflective lens that is constructed from several extremely high frequency focusing layers. Each focusing layer can include an extremely high frequency focusing window that, collectively, define the geometry of a cavity backed reflective lens and its ability to focus electromagnetic signal dispersion.
Claims18
A system, comprising:
- a multi-layer substrate comprising a plurality of EHF focusing layers that collectively form a cavity backed reflective lens characterized as having a cavity that enhances constructive interference of electromagnetic (EM) signal energy being re-radiated by the cavity backed reflective lens and narrows a shape of the EM signal being directed away from the cavity backed reflective lens, wherein each of the EHF focusing layers comprises:
- a dielectric portion that forms part of an EHF focusing window through which the EM signal passes through;
- and
- a plurality of conductive portions that form a periphery of the EHF focusing window, wherein the EHF focusing window of each EHF focusing layer is characterized by a different cross-sectional area that collectively defines a beam shaping geometry of the cavity backed reflective lens that enhances the constructive interference of electromagnetic (EM) signal energy;
- and
- a contactless communication unit (CCU) comprising control circuitry and an antenna, wherein the antenna is positioned with respect to the cavity backed reflective lens, and wherein during operation of the CCU, an electromagnetic signal pattern being emitted from or received by the antenna is shaped by the cavity backed reflective lens.
3 more elements
A module for controlling contactless communications with a counterpart communications unit, the module comprising:
- contactless communications circuitry comprising silicon die and an insulation layer encompassing the silicon die, the circuitry comprising a first surface;
- an antenna that is electrically coupled to the contactless communications circuitry;
- and
- an EM focusing structure secured to the first surface, the EM focusing structure comprising a plurality of EHF focusing layers that collectively form a cavity backed reflective lens, wherein the silicon die serves as a nominal reflective ground plane for the EM focusing structure, and wherein each of the EHF focusing layers is characterized by a different cross-sectional area such that the EHF focusing layers collectively define a beam shaping geometry of the cavity backed reflective lens.
1 more element
An EM reflective lens for use in focusing EM signal energy being emitted by or received by an antenna for contactless communications, the EM reflective lens comprising:
- a nominal reflecting ground plane;
- a first EHF focusing layer positioned on top of the nominal reflecting ground plane, the first EHF focusing layer comprising a first EHF focusing window having a first cross-sectional area;
- a second EHF focusing layer positioned on top of the first EHF focusing layer, the second EHF focusing layer comprising a second EHF focusing window having a second cross-sectional area that is greater than the first cross-sectional area;
- a third EHF focusing layer positioned on top of the second EHF focusing layer, the third EHF focusing layer comprising a third EHF focusing window having a third cross-sectional area that is greater than the second cross-sectional area;
- and
- wherein the first, second, and third EHF focusing windows define a cavity backed reflective lens characterized as having a cavity shaped as a paraboloid.
3 more elements
A device comprising:
- a multilayer board comprising a plurality of EHF focusing layers embedded within the multilayer board, wherein the plurality of EHF focusing layers are arranged with respect to each other to provide a beam steering cavity backed reflective lens, and wherein each of the EHF focusing layers is characterized by a different cross-sectional area such that the EHF focusing layers collectively define a beam shaping geometry of the cavity backed reflective lens;
- and
- a transducer positioned with respect to the beam steering cavity backed reflective lens, wherein the position of the transducer and the arrangement of the EHF focusing layers steer an electromagnetic (EM) signal energy being re-radiated by the beam steering cavity backed reflective lens along an axis that is oblique to a center axis that is perpendicular to the multilayer board.
Dependencies are inferred from the claim text.