×

ANTENNALESS WIRELESS DEVICE

  • US 20100188300A1
  • Filed: 07/31/2009
  • Published: 07/29/2010
  • Est. Priority Date: 08/04/2008
  • Status: Active Grant
First Claim
Patent Images

1. An antennaless wireless handheld or portable device (100) comprising:

  • a user interface module (101),a processing module (102),a memory module (103),a communication module (104) and,a power management module (105);

    the communication module (104) including a radiating system (200) capable of transmitting and receiving electromagnetic wave signals in a first frequency region;

    said radiating system (200) comprising a radiating structure (201) comprising at least one ground plane layer (206) including a connection point (207), at least one radiation booster (204) including a connection point (205) and an internal port (208), wherein the internal port (208) is defined between the connection point (205) of the at least one radiation booster (204) and the connection point (207) of the at least one ground plane layer (206);

    wherein a ground plane rectangle (450) is defined as being the minimum-sized rectangle that encompasses the at least one ground plane layer (206, 402), so that the sides of the ground plane rectangle (450) are tangent to at least one point of the at least one ground plane layer (206, 402),wherein the ratio between a side of the ground plane rectangle (450) 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 (204) couples the electromagnetic energy from the radiofrequency system (202) to the ground plane layer (206) in transmission, and from the ground plane layer (206) to the radiofrequency system (202) in reception;

    wherein the at least one radiation booster (204) 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 (200) further comprising a radiofrequency system (202), and an external port (203);

    the radiofrequency system (202) comprising a first port (209) connected to the internal port of the radiating structure (208) and a second port (210) connected to the external port (203) of the radiating system (200);

    wherein the input impedance of the radiating structure (201) at said internal port (208) when disconnected from the radiofrequency system (202) has an imaginary part not equal to zero for any frequency of the first frequency region;

    and wherein said radiofrequency system (202) modifies the impedance of the radiating structure (201), providing impedance matching to the radiating system (200) in the first frequency region of operation of the radiating system (200).

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×