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Patch antenna arrangement

  • US 9,966,669 B2
  • Filed: 12/06/2012
  • Issued: 05/08/2018
  • Est. Priority Date: 12/22/2011
  • Status: Active Grant
First Claim
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1. Patch antenna assembly comprising:

  • a patch antenna,the patch antenna comprising a dielectric having a length, a width and a height,on the upper side of the dielectric, a patch electrode is provided in a patch electrode surface,on the underside of the dielectric, a ground plane is provided,the patch electrode is galvanically or capacitively supplied with power via at least one feed line,in the longitudinal and width directions, the dielectric is larger than the longitudinal and width extension of the patch electrode surface located on the upper side of the dielectric,the patch electrode surface is provided so as to be surrounded by an annular or frame patch electrode under formation of an annular patch antenna,between the patch electrode surface and the annular or frame patch electrode surrounding the patch electrode surface, a space or gap for galvanic separation is provided,the patch electrode is at least one of designed and powered such that it can generate or receive a left- or right-circularly polarized electromagnetic wave,the annular or frame patch electrode surrounding the patch electrode surface is designed such that it can at least one of transmit and receive oppositely polarized electromagnetic waves,an attachment patch is provided,the attachment patch is arranged opposite the dielectric with spacing from the patch electrode surface and with spacing from the annular or frame patch electrode,in the longitudinal and transverse directions, the attachment patch has an extension such that said attachment patch covers both the patch electrode surface and the annular or frame patch electrode at least in part to provide non-contact capacitive coupling between the patch electrode surface and the annular patch electrode surface, the attachment patch and the active patch electrode forming a plate capacitor through which energy is transferred via the attachment patch between the active patch electrode and the annular patch electrode.

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