Patent ID: 7164933
Filing Date: 2007-01-16
Classification: H01Q

Abstract:
1. An apparatus for reducing electromagnetic interference between a pair of antennas attached to a wireless communications device, wherein the apparatus is positioned proximate to a second antenna of the pair of antennas for intercepting electromagnetic energy radiated from a first antenna of the pair of antennas during transmission of a signal, and wherein the apparatus comprises a plurality of resonant circuit elements, each being configured to resonate at or near a carrier frequency of the transmitted signal for redirecting at least a portion of the electromagnetic energy away from the second antenna, thereby reducing the electromagnetic interference at the second antenna, wherein combined operation of the plurality of resonant circuit elements enable the apparatus to operate over a relatively wide range of band-gap frequencies, and wherein the relatively wide range of band-gap frequencies comprises the carrier frequency of the transmitted signal and extends approximately two to four octaves above the carrier frequency.