Electromagnetic signal focusing structures
AssigneeKeyssa Systems, Inc.
InventorsDennis F. Rosenauer, Giriraj Mantrawadi
Life of this patent
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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.
Claims19
A system, comprising:
- an antenna to electrically couple an electromagnetic (EM) signal;
- and
- a multi-layer substrate comprising a plurality of extremely high frequency (EHF) focusing layers, each of the EHF focusing layers comprising:
- a dielectric portion forming an EHF focusing window transmissive to the EM signal, and
- a plurality of conductive portions blocking the EM signal and forming a periphery of the EHF focusing window, wherein the conductive portions comprise conductive vias surrounding the dielectric portion, and wherein the conductive vias are spaced apart from each other such that the conductive vias block the EM signal from passing through the periphery of the EHF focusing window,
- wherein the EHF focusing windows have different cross-sectional areas, and
- wherein the EHF focusing windows collectively receive the EM signal and enhance constructive EM interference of the EM signal.
A module for controlling contactless communications with a counterpart communications unit, the module comprising:
- a substrate comprising a surface;
- contactless communications circuitry disposed on the surface of the substrate, the contactless communications circuitry comprising a die that functions as a ground layer that reflects an electromagnetic (EM) signal;
- an antenna electrically coupled to the contactless communications circuitry and to electrically couple the EM signal;
- and
- an EM focusing structure secured to the surface of the substrate and above the die and comprising a plurality of extremely high frequency (EHF) focusing layers, each of the EHF focusing layers including an EHF focusing window transmissive to the EM signal,
- wherein the EHF focusing windows have different cross-sectional areas, and wherein the EHF focusing windows collectively receive the EM signal and enhance constructive EM interference of the EM signal.
An electromagnetic (EM) reflective lens comprising:
- a ground plane to reflect an EM signal;
- a first EHF focusing layer positioned on top of the ground plane, the first EHF focusing layer comprising a first EHF focusing window having a first cross-sectional area surrounded by a first plurality of vias;
- 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, wherein the second cross-sectional area is surrounded by a second plurality of vias;
- and
- 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, wherein the third cross-sectional area is surrounded by a third plurality of vias,
- wherein the first, second, and third EHF focusing windows are transmissive to the EM signal and a shape of the EHF focusing windows resembles a paraboloid, and wherein the first, second, and third plurality of vias enhance constructive EM interference of the EM signal.
Dependencies are inferred from the claim text.