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 portable wireless electronic device accessory, comprising:
a ring receiver to receive wireless transmissions;
a ground plane adjacent said ring receiver;
a grounding tab extending from said ground plane to contact a portable wireless electronic device; and
a retransmitting director fan located inside, and coplanar with, said ring receiver and electromagnetically coupled to said ring receiver to retransmit said wireless transmissions,
wherein the portable wireless electronic device accessory is adjacent and external to the portable electronic device and said grounding tab extends from said ground plane to establish an electrical connection with the portable electronic wireless device.
2. The accessory of claim 1 , further comprising a dielectric layer parallel to said ground plane.
3. The accessory of claim 1 , further comprising a shield plane parallel to said ground plane.
4. The accessory of claim 3 , wherein the shield plane is made from polyamide film.
5. The accessory of claim 1 , wherein the ring receiver is made from copper.
6. The accessory of claim 1 , wherein the ring receiver is positioned to be adjacent to an omnidirectional antenna within the portable wireless electronic device when the wireless device accessory is attached to the wireless device.
7. The accessory of claim 1 , further comprising an inner case attached to an outer frame, the inner case configured to receive the portable wireless electronic device, wherein the ring receiver and retransmitting director fan are inserted into the inner case.
8. The accessory of claim 7 , wherein the outer frame is configured to accept an inlay.
9. The accessory of claim 7 , wherein the inner case comprises a shock absorbing low durometer material, and wherein the outer frame comprises a solid high durometer material.