Nokia Mobile Phones Limited

Nokia Corporation

Nokia Technologies Oy

Ilkka Pankinaho

Antero Lehtola

Olli Toivo Talvitie

Aimo Arkko

Mika Juhani Tuominen

Juha-Pekka Louhos

Jouni Pennanen

Olli Talvitie

A radio device and an antenna structure comprising a ground plane, at least a first and a second radiator, both radiators being configured to provide at least one resonance frequency in order to provide at least one frequency band. The antenna structure further comprises separate feed points for both radiators grounded to the ground plane. The first radiator is configured to provide at least two frequency bands, at least one of the frequency bands being at least partly overlapping with at least one frequency band provided by the second radiator. In addition, at least the first radiator is a groove plane antenna such that coupling of the radiators with each other at least within the partly overlapping frequency range is substantially avoided.

Radio device and antenna structure

An antenna arrangement for mobile telecommunication devices comprises a planar radiating element ( ), a ground plane ( ) parallel to the planar radiating element ( ) and means ( ) for providing a grounding connection between the planar radiating element ( ) and the ground plane ( ). The means for providing a grounding connection between the planar radiating element ( ) and the ground plane ( ) comprise a number of Grounding connections ( ). A number of them is independently controllable between certain states. The state of each independently controllable grounding connection ( ) has an effect on certain operational frequency bands of the antenna arrangement.

Optimal use of an electrically tunable multiband planar antenna

An antenna coupler ( ) is provided for coupling a radio telecommunication device ( ) with an integral planar antenna to an external device ( ). The integral planar antenna of the radio telecommunication device comprises a first planar conductive antenna element ( ). The antenna coupler comprises a second planar conductive antenna element ( ) which is essentially similar to the first planar conductive antenna element, a first conductive ground plane ( ) parallel to the second planar conductive antenna element and transmission apparatus ( ) for conducting a radio frequency signal between the second planar conductive antenna element and the external device.

Antenna coupler and arrangement for coupling a radio telecommunication device to external apparatuses

The invention relates to a method for coupling a signal to an antenna structure, as well as to an antenna structure, which comprises at least two antenna elements ( ), a ground plane ( ) for grounding the antenna structure, a coupling line ( ) for coupling a first antenna element and a second antenna element to each other, and a feeding line ( ) for feeding the antenna structure through one feeding point. The first antenna element ( ) is next to the ground plane and perpendicular to the ground plane ( ). The second antenna element ( ) is above the ground plane and parallel to the ground plane. The first antenna element is arranged to receive information on a reception band of a broadband radio system and the second antenna element is arranged to transmit information on a transmission band of said broadband radio system. By arranging the second antenna element to be adjustable and by adding antenna element to the antenna structure, the antenna structure according to the invention can be used, for example, in mobile stations of 2 and 3 generation mobile communication systems.

Method for coupling a signal and an antenna structure

An antenna construction according to the invention has a radiator, ground plane and at least one matching element. The matching element is capacitively coupled to a ground potential. By varying the number, location and strength of the capacitive coupling of the matching elements the characteristics of the antenna construction, such as the number of resonance frequencies, resonance frequencies and radiator impedance at the feed point can be controlled in a versatile manner.

Antenna construction including a ground plane and radiator

An antenna configuration for a mobile communication device. The antenna configuration includes at least a first antenna configured so that the first antenna may be mounted near or between a speaker and a earpiece of a mobile station. In an embodiment of the invention, the first antenna comprises a substantially flat conductor including at least one hole for passing sound from the speaker to the earpiece of the mobile station. The first antenna is configured to receive GPS signals. A second antenna is implemented on the mobile station to transmit and receive cellular transmissions.

Antenna configuration for a mobile station

The invention relates to small-sized antenna systems, especially planar antenna structures operating on several frequency bands. The antenna structure of the invention comprises a radiating antenna element with at least two lips. Thus, the antenna structure has two basic resonance frequencies, which are defined by the dimensions of the lips of the antenna element, gaps between them, and the other dimensions of the antenna structure. The radiating antenna structure is connected to the ground plane at least at one place. The radiating antenna element comprises at least two connection points, which are used for connecting the feed lines of the transmitter and receiver, and for connecting special tuning elements. The resonance frequencies of the antenna structure may be adjusted by connecting the said tuning elements to the connection points and antenna feed lines so that the antenna structure is operable on more than two frequency bands. The switches may be conventional semiconductor switches, such as FET switches or PIN diodes. Various optionally connectable tuning element or antenna feed arrangements may be used for carrying out an antenna arrangement which may be tuned in on all reception and transmission bands of an arrangement with several frequency ranges and mobile phone systems.

Double resonance antenna structure for several frequency ranges

The invention relates to an internal antenna (1) for a wireless handportable communication device (2), comprising: an antenna plate (3) fuinctioning as an radiator, a feed element (5) to feed the radiator (3), and attachment elements (10, 12) to attach the antenna (1) to a wireless communications device (2), which comprises an electrically conductive earth plane (4). The attachment elements (10, 12) comprise a cover structure (12) for bracing the antenna plate (3) on the wireless communications device (2). The antenna (1) further comprises a support frame (10) or spacers (21) for keeping the antenna plate (3) at a distance from the earth plane (4).

Growing community of inventors

Paimio, Finland

Ilkka Pankinaho