Radio frequency emission guard for portable wireless electronic device
View Patent ↗A radio frequency and electromagnetic emission shield employed on wireless personal and portable electronic devices, containing one or more layers of radio frequency (RF) or electromagnetic (EM) screening material, shielding the user from harmful RF or EM radiation, or a redirection antenna that receives all RF signals, and redirects those signals away from the user. The RF emission shield may be contained within a plurality of outer layers, providing a secure fit to a wireless electronic device and an outer layer providing an easy grip for the user.
1. A wireless device accessory, comprising:
an inner case formed to cover a wireless device having an antenna transmitting wireless signals and an other signal transmitting and receiving antenna;
a solid structural outer case formed to cover the inner case;
a redirection panel insertable between the inner case and the wireless device, wherein the redirection panel comprises:
a dielectric insulation layer sized to correspond to said antenna of said wireless device and formed with a cutout adjacent said other signal transmitting and receiving antenna;
a signal capture ring adjacent said antenna and configured to receive wireless transmissions;
a ground plane within said signal capture ring wherein said ground plane is formed in a serpentine shape and said signal capture ring is adjacent and substantially encircles said around plane in a serpentine shape;
a grounding tab extending from said ground plane, and outside said signal capture ring to contact a portable electronic device; and
a redirection fan formed within said ground plane and located inside, and coplanar with, said signal capture ring and electromagnetically coupled to said signal capture ring to retransmit said wireless transmissions.
2. The wireless device accessory of claim 1 , wherein the ground plane, the grounding tab, and the redirection fan comprises of a conductive material.
3. The wireless accessory of claim 2 , wherein the ground plane, the grounding tab, and the redirection fan are electrically coupled.
4. The wireless device accessory of claim 3 , wherein the ground plane and the redirection fan are located on the insulation layer.
5. A wireless device accessory for a wireless device having an antenna transmitting wireless signals, comprising:
a redirection panel positionable adjacent the wireless device, wherein the redirection panel comprises:
a dielectric insulation layer sized to correspond to said antenna of said wireless device;
a signal capture ring adjacent said antenna and configured to receive wireless transmissions,
a ground plane within said signal capture ring wherein said ground plane is formed in a serpentine shape and said signal capture ring is adjacent and substantially encircles said ground plane in a serpentine shape;
a grounding tab extending from said ground plane and outside said signal capture ring to contact a portable electronic device, and
a redirection antenna formed within said ground plane and located inside, and coplanar with, said signal capture ring and electromagnetically coupled to said signal capture ring to retransmit wireless transmissions.
6. The wireless device accessory of claim 5 , wherein the ground plane, the grounding tab, and the redirection antenna comprises a conductive material.
7. The wireless accessory of claim 6 , wherein the ground plane, the grounding tab, and the redirection antenna are electrically coupled.
8. The wireless device accessory of claim 6 , wherein the ground plane and the redirection antenna are located on the insulation layer.
9. The wireless device accessory of claim 8 , further comprising a protective case covering a portion of a wireless device, and wherein the redirection panel is placed between the protective case and the wireless device.
10. The wireless device accessory of claim 8 , further comprising a protective case covering a portion of the wireless device, and wherein the redirection panel is located within the protective case.