Abstract: An apparatus comprising: a first feed point (26) coupled to a first conductive member (30), the first conductive member being coupled to a ground member (46) in at least two places, the first conductive member and ground member defining a first perimeter (50), wherein the first conductive member and at least a portion of the ground member are configured to resonate at least partially in a first operational frequency band; and a second feed point (28) coupled to a second conductive member (32), the second conductive member being disposed within the first perimeter, the second conductive member and at least a portion of the ground member defining a second perimeter (52) which is smaller than the first perimeter, and being configured to resonate in a second operational frequency band, different to the first operational frequency band.

Abstract: An apparatus comprises a parasitic radiative element, a tuning element having a galvanic coupling to the parasitic radiative element, and a driven radiative element having a non-galvanic coupling to the parasitic radiative element.

Abstract: An apparatus comprising: a first feed point (26) coupled to a first conductive member (30), the first conductive member being coupled to a ground member (46) in at least two places, the first conductive member and ground member defining a first perimeter (50), wherein the first conductive member and at least a portion of the ground member are configured to resonate at least partially in a first operational frequency band; and a second feed point (28) coupled to a second conductive member (32), the second conductive member being disposed within the first perimeter, the second conductive member and at least a portion of the ground member defining a second perimeter (52) which is smaller than the first perimeter, and being configured to resonate in a second operational frequency band, different to the first operational frequency band.

Abstract: This invention describes a method for improving isolation between the main antenna (e.g., a GSM antenna) and at least one further antenna (e.g., a BLUETOOTH/WLAN antenna, a diversity antenna, etc.) in an electronic communication device by a floating parasitic element placed between these two antennas for providing an isolation from electro-magnetically coupled currents between these two antennas in a ground plane, wherein the antennas are connected to the ground plane and the parasitic element is floating and electrically isolated from the ground plane. The advantages of the present invention include but are not limited to a more compact placement of antennas and a reduced cost and better reliability compared to an approach involving grounded parasitic elements.

Abstract: An antenna assembly for a portable radio device/mobile station is provided. The assembly includes a retractable whip antenna 24, a first radio lead 50 for coupling the whip antenna to a mobile telephony receiver, and a second radio lead 48 for coupling the whip antenna 24 to a FM or DVB receiver. Each lead is coupled to the whip antenna at least when the whip antenna is fully extended. In one embodiment, received signals are frequency discriminated by a RF choke such as an inductor 52 along the second radio lead. In another embodiment, the first radio lead is coupled directly to a PIFA antenna 58 internal to the portable device, and the whip antenna is in parasitic communication 64 with the PIFA antenna at least when the whip antenna is extended and receiving signals above a threshold frequency. In that alternative embodiment, the whip antenna is preferably decoupled from ground.

Abstract: This invention describes a method for improving isolation between the main antenna (e.g., a GSM antenna) and at least one further antenna (e.g., a BLUETOOTH/WLAN antenna, a diversity antenna, etc.) in an electronic communication device by a floating parasitic element placed between these two antennas for providing an isolation from electro-magnetically coupled currents between these two antennas in a ground plane, wherein the antennas are connected to the ground plane and the parasitic element is floating and electrically isolated from the ground plane. The advantages of the present invention include but are not limited to a more compact placement of antennas and a reduced cost and better reliability compared to an approach involving grounded parasitic elements.

Abstract: An antenna assembly for a portable radio device/mobile station is provided. The assembly includes a retractable whip antenna 24, a first radio lead 50 for coupling the whip antenna to a mobile telephony receiver, and a second radio lead 48 for coupling the whip antenna 24 to a FM or DVB receiver. Each lead is coupled to the whip antenna at least when the whip antenna is fully extended. In one embodiment, received signals are frequency discriminated by a RF choke such as an inductor 52 along the second radio lead. In another embodiment, the first radio lead is coupled directly to a PIFA antenna 58 internal to the portable device, and the whip antenna is in parasitic communication 64 with the PIFA antenna at least when the whip antenna is extended and receiving signals above a threshold frequency. In that alternative embodiment, the whip antenna is preferably decoupled from ground.

Abstract: Mobile terminals having a plurality of planar inverted-F antennas placed in close proximity of each other and methods of fabricating and using such mobile terminals are provided. Generally, planar inverted-F antennas, such as dual band CDMA, GPS, and Bluetooth antennas, cannot be placed in close proximity of each other without having interference. Accordingly, notch filters are provided in a dual band CDMA antenna to mitigate the interference and to facilitate isolation between the antennas.

Abstract: Mobile terminals having a plurality of planar inverted-F antennas placed in close proximity of each other and methods of fabricating and using such mobile terminals are provided. Generally, planar inverted-F antennas, such as dual band CDMA, GPS, and Bluetooth antennas, cannot be placed in close proximity of each other without having interference. Accordingly, notch filters are provided in a dual band CDMA antenna to mitigate the interference and to facilitate isolation between the antennas.