CLOSELY COUPLED RE-RADIATOR COMPOUND LOOP ANTENNA STRUCTURE

摘要

Source radio frequency energy (RF) is coupled wirelessly (no physical contact) between two compound loop (CPL) antennas or one CPL and another type of antenna across a variety of barriers such as plastic, human tissues, glass, and air. The compound coupling interface created between the two antennas is highly efficient in transferring the RF energy from a source antenna to a destination including a CPL antenna. A re-radiating structure including a further CPL antenna or a different type of antenna may be connected on the destination side to completely physically isolate the source side from the destination side. When the destination coupling antenna is removed, the source coupling antenna may operate as an efficient radiator at the desired operating frequencies. Likewise, the destination coupling antenna may operate as an efficient radiator in the absence of the source coupling antenna.

主权项

1. A re-radiating antenna structure, comprising:
a first compound loop antenna including at least a first radiator element and a first loop element; and a support structure for supporting and holding the first compound loop antenna in close proximity to, but without touching, an antenna within a device having a first ground for the antenna, the support structure including a second ground isolated from the first ground, wherein placement of the first compound loop antenna by the support structure causes the antenna within the device to capacitively couple and to wirelessly receive and transmit data to and from the device through the first compound loop antenna, and wherein the first compound loop antenna re-transmits the data received from the antenna within the device.