Abstract: A Portable communication device includes in an interior of the portable communication device a ground plane and an antenna arrangement. The antenna arrangement includes an antenna element combination including a first radiating antenna element to be connected to a feeding potential and dimensioned for resonating in a first frequency band, and a second radiating antenna element dimensioned for resonating in a second frequency band. The antenna arrangement further includes at least one first element joining switch that in a closed position interconnects elements of the antenna element combination for dimensioning the antenna element combination for resonating in a third frequency band and in an open position separates these elements from each other, and a grounding switch which in a closed position joins the second radiating antenna element to a ground plane and in an open position separates the second radiating antenna element from the ground plane.

Abstract: A Portable communication device includes in an interior of the portable communication device a ground plane and an antenna arrangement. The antenna arrangement includes an antenna element combination including a first radiating antenna element to be connected to a feeding potential and dimensioned for resonating in a first frequency band, and a second radiating antenna element dimensioned for resonating in a second frequency band. The antenna arrangement further includes at least one first element joining switch that in a closed position interconnects elements of the antenna element combination for dimensioning the antenna element combination for resonating in a third frequency band and in an open position separates these elements from each other, and a grounding switch which in a closed position joins the second radiating antenna element to a ground plane and in an open position separates the second radiating antenna element from the ground plane.

Abstract: The present invention relates to a built-in folded PIFA antenna for a radio communication device (400, 450) and a mobile phone (400) containing the same antenna. The built-in antenna comprises a first part (500) tuned to a first and a second frequency band, and a second part (600) electro-magnetically interacting with the first part (500) and galvanically separated from the first part. While the second part (600) interacts with the first part, the antenna is tuned to a third frequency band. The first part (500) is folded to form a first element (510) and a second element (520), wherein the second element (520) is folded approximately 180 degrees in relation to the longitudinal axis of the first element (520).

Abstract: The present invention relates to a built-in folded PIFA antenna for a radio communication device (400, 450) and a mobile phone (400) containing the same antenna. The built-in antenna comprises a first part (500) tuned to a first and a second frequency band, and a second part (600) electro-magnetically interacting with the first part (500) and galvanically separated from the first part. While the second part (600) interacts with the first part, the antenna is tuned to a third frequency band. The first part (500) is folded to form a first element (510) and a second element (520), wherein the second element (520) is folded approximately 180 degrees in relation to the longitudinal axis of the first element (520).

Abstract: A small, inexpensive, built-in planar inverted F-type antenna (PIFA) with a parallel meandering parasitic element having a wide bandwidth to facilitate wireless, short range communications between devices operating in the Bluetooth frequency range is disclosed. The parasitic element is placed on the same substrate as the main antenna element and is grounded at one end. The feeding pin of the PIFA is proximal to the ground pin of the parasitic element. The coupling of the meandering, parasitic element to the main antenna results in two resonances. These two resonances are adjusted to be adjacent to each other in order to realize a broader resonance.

Abstract: A built-in, low-profile antenna having an inverted planar inverted F-type (PIFA) antenna and a meandering parasitic element having a wide bandwidth to facilitate communications within a plurality of frequency bands is disclosed. The main element is placed at a predetermined height above a substrate of a communication device and the parasitic element is placed on the same substrate as the main antenna element and is grounded at one end. The feeding pin of the PIFA is proximal to the ground pin of the parasitic element. The coupling of the meandering, parasitic element to the main antenna results in two resonances. These two resonances are adjusted to be adjacent to each other in order to realize a broader resonance encompassing the DCS, PCS and UMTS frequency ranges.