Patent ID: 8305233
Filing Date: 2012-11-06
Classification: G01D,H01Q,H05K,Y02B,Y04S,Y10T

Abstract:
1. An antenna isolation circuit comprising: a multilayer planar structure comprising at least two conductive layers separated from one another by a dielectric material; a first radio frequency port electrically connected to the multilayer planar structure, the first radio frequency port arranged to be electrically connected to an antenna; a second radio frequency port electrically connected to the multilayer planar structure, the second radio frequency port arranged to be electrically connected to a radio circuit receiving power from a power source; and a distributed circuit element electrically connected to the first radio frequency port and to the second radio frequency port and comprising at least some of the conductive layers of the multilayer planar structure, wherein the distributed circuit element is configured to electrically isolate the antenna from the power source when the antenna is electrically connected to the first radio frequency port and the radio circuit is electrically connected to the second radio frequency port.