Abstract: Disclosed herein are exemplary embodiments of interlocking spacers that may be used for suspending transmission lines of a feed network between electrically-conducting ground planes of an antenna assembly. Also disclosed are exemplary embodiments of antenna assemblies including such interlocking spacers. An exemplary embodiment of an antenna assembly generally includes a feed network including one or more transmission lines, a first ground plane, and a second ground plane spaced apart from the first ground plane with a space therebetween. At least one pair of spacers is configured to be interlocked to one another when positioned on opposite sides of a substrate including the transmission lines of the feed network. The spacers are operable for suspending the transmission lines in the space between the ground planes.

Abstract: Exemplary embodiments are disclosed of antenna devices for portable radio communication devices. In an exemplary embodiment, there is an antenna device for a portable radio communication device adapted for receiving radio signals in at least one frequency band. The antenna device includes a radiating element having a first branch and a second branch connected to a common elongated feeding section.

Abstract: The present invention relates to an antenna arrangement comprising a flexible film (1) having a radiating element (8) mounted to a first side of a dielectric carrier (3). The dielectric carrier (3) has a through hole (5) from the first side thereof to a second side, opposite the first side, thereof. The flexible film (1) is dielectric and comprises a cut linear pattern providing a flip (2) positioned over said through hole (5), wherein said flip (2) is flush with said flexible film (1).

Abstract: An antenna device for a portable electronic device, preferably for the FM frequency range, generally includes a monopole radiating and/or radiation receiving element including a feeding portion adapted to be connected to an antenna connection point. An inductor is connectable between the antenna connection point and ground. The input of an amplifier stage is also connectable to the antenna connection point. An output of the amplifier stage is connectable to a radio circuit, all provided in the interior of the portable electronic device.

Abstract: An antenna device for a portable radio communication device operable in at least a first and a second frequency band, includes first and second electrically conductive planar radiating elements. The first radiating element has a feeding portion connectable to a feed device of the portable radio communication device. The second radiating element includes a grounding portion connectable to ground. A controllable switch is arranged between the first and second radiating elements for selectively interconnecting and disconnecting the radiating elements. The state of the switch is controlled by means of a control voltage input. A first filter is arranged between the feeding portion and the control voltage input, to block radio frequency signals. By providing a high pass filter between the first and second radiating elements above a ground plane, quad-band operation is provided with high efficiency in a physically small antenna device.

Abstract: The present invention comprises an antenna device for a portable radio communication device operable in at least a first and a second frequency band. The antenna device comprises a first electrically conductive radiating element having a feeding portion connectable to a feed device (RF) of the radio communication device for feeding and receiving radio frequency signals, a first ground plane portion arranged at a distance from the first radiating element, a second ground plane portion, and a controllable switch arranged between the first and second ground plane portion for selectively interconnecting or disconnecting the first and second ground plane portion.

Abstract: The present invention relates to a portable radio communication device operable in at least a first and a second frequency band, the antenna device comprises a first electrically conductive radiating element comprises a first feeding portion connectable to a feed device (RF) of the radio communication device for feeding and receiving radio frequency signals, a ground plane provided at a distance from the first radiating element, a DC-blocking device connecting the first electrically conductive radiating element and the ground plane at a first position, and a controllable switch connecting the first electrically conductive radiating element and the ground plane at a second position.

Abstract: The present invention relates to an antenna device for a portable radio communication device adapted for receiving radio signals in at least a first operating frequency band. The antenna device comprises a radiating element comprising a feeding portion and a tuning capacitor connected to the feeding portion of the radiating element. The antenna device further comprises a low pass filter connected to the feeding portion and to a high impedance low noise amplifier for the at least a first operating frequency band, between the tuning capacitor and the high impedance low noise amplifier.

Abstract: A multi-band antenna device for a portable radio communication device has first and second radiating elements (10, 20?). A controllable switch (30) is arranged between the radiating elements for selectively interconnecting and disconnecting thereof. The state of the switch is controlled by means of a control voltage input (VSwitch). A filter (40) comprising a pure resistance that blocks radio frequency signals is arranged between the second radiating element and the control voltage input. By means of this arrangement, two broad and spaced apart frequency bands are obtained with retained performance and small overall size of the antenna device. A communication device comprising such an antenna device is also provided.

Abstract: An antenna device for a portable radio communication device operable in at least a first and a second frequency band, includes first and second electrically conductive planar radiating elements. The first radiating element has a feeding portion connectable to a feed device of the portable radio communication device. The second radiating element includes a grounding portion connectable to ground. A controllable switch is arranged between the first and second radiating elements for selectively interconnecting and disconnecting the radiating elements. The state of the switch is controlled by means of a control voltage input. A first filter is arranged between the feeding portion and the control voltage input, to block radio frequency signals. By providing a high pass filter between the first and second radiating elements above a ground plane, quad-band operation is provided with high efficiency in a physically small antenna device.

Abstract: The present invention relates to an antenna device comprising a dielectric carrier, a flexible film and a radiating element, wherein the flexible film is arranged on the dielectric carrier and the radiating element is arranged between the dielectric carrier and the flexible film.

Abstract: The present invention relates to an antenna assembly comprising a support structure for carrying a radiating structure and at least one feeding clip, the antenna assembly is provided to be mounted on a PCB in a mobile communication device, the support structure comprises a top side part which is to be mounted substantially parallel with the PCB, the top side part is positioned, when mounted on the PCB, at a first distance from the PCB, and the radiating structure comprises at least one contact area located on the support structure. The antenna assembly is characterised in that the contact area for the radiating structure is located at a position on the support structure where a distance between the contact area and the PCB is less than the distance between said top side part and the PCB. The invention also relates to a feeding clip.

Abstract: A multi-band antenna device for a portable radio communication device has first and second radiating elements (10, 20). A controllable switch (30) is arranged between the radiating elements for selectively interconnecting and disconnecting thereof. The state of the switch is controlled by means of a control voltage input (VSwitch). A filter (40) that blocks radio frequency signals is arranged between the feeding portion and the control voltage input. A DC blocking arrangement (50) is arranged between a grounding portion (14) on the first radiating element and ground wherein the first and second radiating element are generally planar and arranged at a predetermined distance above a ground plane. By means of this arrangement, two broad and spaced apart frequency bands are obtained with retained performance and small overall size of the antenna device. A communication device comprising such an antenna device is also provided.

Abstract: The present invention relates to a method of production of an antenna pattern having a predetermined general outline, with an ink jet printer, laser activation device or similar device. The device creates the antenna pattern with a plurality of empty inner portions within the general outline.

Abstract: A quad-band antenna device (10) for a portable radio communication device comprises two radiating elements (12, 14) of different lengths and two common conductors (18, 20) of different lengths. One of the common conductors can be selectively connected in and out with respect to radio frequency signals in order to adjust the total electrical length of the antenna device, thereby making it operable in four different frequency bands.

Abstract: An antenna device for use in a portable radio communication device comprises a ground plane (110), a microstrip line (114) connected to a feed point (116) for feeding and/or receiving radio frequency signals. A package (120) having an electrically conductive housing (122) is provided in the radio communication device, wherein the housing is provided above the ground plane and the microstrip line, wherein the housing is galvanically insulated from the microstrip line, and wherein the housing is capacitively coupled to the microstrip line. The antenna device thus has a large radiating area and thus providing better performance of the device. Also, an already existing part in the radio communication device, e.g., a battery package, can be used also as radiating element, saving space and costs.

Abstract: The present invention relates to a metal cover (1) for a radio communication device. The metal cover (1) comprises a through non-conductive hole forming a slot (4; 10) through the metal cover (1), and a radio frequency feed (6, 7; 8, 9), wherein the radio frequency feed (6, 7; 8, 9) is arranged across the slot (4; 10) to feed the slot (4; 10) as a slot antenna for the radio communication device.

Abstract: The present invention relates to an antenna arrangement comprising a flexible film (1) having a radiating element (8) mounted to a first side of a dielectric carrier (3). The dielectric carrier (3) has a through hole (5) from the first side thereof to a second side, opposite the first side, thereof. The flexible film (1) is dielectric and comprises a cut linear pattern providing a flip (2) positioned over said through hole (5), wherein said flip (2) is flush with said flexible film (1).