Patent ID: 8203492
Filing Date: 2012-06-19
Classification: H01Q

Abstract:
1. An antennaless wireless handheld or portable device comprising: a user interface module, a processing module, a memory module, a communication module and, a power management module; the communication module including a radiating system capable of transmitting and receiving electromagnetic wave signals in a first frequency region; said radiating system comprising a radiating structure comprising at least one ground plane layer including a connection point, at least one radiation booster including a connection point and an internal port, wherein the internal port is defined between the connection point of the at least one radiation booster and the connection point of the at least one ground plane layer; wherein a ground plane rectangle is defined as being the minimum-sized rectangle that encompasses the at least one ground plane layer, so that the sides of the ground plane rectangle are tangent to at least one point of the at least one ground plane layer, wherein the ratio between a side of the ground plane rectangle and the free-space wavelength corresponding to the lowest frequency of the first frequency region is larger than 0.1 such that the ground plane layer supports a radiation mode; wherein the at least one radiation booster couples the electromagnetic energy from the radiofrequency system to the ground plane layer in transmission, and from the ground plane layer to the radiofrequency system in reception; wherein the at least one radiation booster has a maximum size smaller than 1/30 times the free-space wavelength corresponding to the lowest frequency of the first frequency region; the radiating system further comprising a radiofrequency system, and an external port; the radiofrequency system comprising a first port connected to the internal port of the radiating structure and a second port connected to the external port of the radiating system; wherein the input impedance of the radiating structure at said internal port when disconnected from the radiofrequency system has an imaginary part not equal to zero for any frequency of the first frequency region; and wherein said radiofrequency system modifies the impedance of the radiating structure, providing impedance matching to the radiating system in the first frequency region of operation of the radiating system.