Fractus, S.a.

Jordi Soler

Josep Mumbru

Carles Puente

Jaume Anguera Pros

The invention relates to a handheld device comprising a first antenna () arranged to operate in at least a first frequency band, and a second antenna () arranged to operate in at least a second frequency band, wherein said second frequency band is different from said first frequency band. According to the invention, the second antenna comprises a slot antenna comprising at least one slot in at least one conductive layer. The invention also relates to enhancement of the isolation between first and second antennas in a handheld device.

Handheld device with two antennas, and method of enhancing the isolation between the antennas

One aspect of the invention relates to an implantable medical device comprising a device housing (), at least one radio frequency circuit () for radio frequency communication, at least one antenna, at least one terminal to electromagnetically couple said at least one antenna to said at least one radio frequency circuit, and a dielectric compartment () that encompasses at least a portion of said at least one antenna. The antenna comprises a conducting pattern, at least a portion of which is shaped as a curve, wherein said curve comprises at least five segments, wherein each of said at least five segments forms an angle with each adjacent segment in said curve, wherein at least three of the at least five segments of said curve are shorter than one-fifth of the longest free-space operating wavelength of the antenna, wherein each angle between adjacent segments is less than 180&#xb0;, and at least two of the angles between adjacent sections are less than approximately 115&#xb0;.

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Girona, Spain

Jordi Soler