Nokia Mobile Phones Limited

Corehw Semiconductor Oy

Petri Kotilainen

Petri Heliö

Tomi-Pekka Takalo

Markus Hakamo

Saku Lahti

Timo T Laitinen

Tapio Kuiri

Olli Toivo Talvitie

Mika Isotalo

Tapio Saarinen

Kari Malmivirta

Olli Varjus

Seppo Vesam&auml;ki

The invention relates to an antenna soft switching system of an Angle of Departure, AoD, direction finding transmitter unit. The soft switching system comprises: a timing unit for obtaining at least a starting time of a switching event, a switching network arranged on a radio frequency, RF, signal path between an RF port and a first antenna port and a second antenna port, and a generator unit for generating at least one waveform for controlling the switching network. The generator unit is configured to control the switching network so that the amplitude of the RF signal is switched substantially smoothly from the first antenna port to the second antenna port so that level of unwanted emissions of a transmitted RF spectrum of the AoD directional finding transmitter unit are reduced. The invention relates also to an AoD direction finding transmitter unit comprising the antenna soft switching system and to an antenna soft switching method for an AoD directional finding transmitter unit.

Antenna soft switching solution of an AoD direction finding transmitter

A capacitor structure implemented as a layered structure including a plurality of alternating dielectric and metallization layers, and a method of manufacturing such capacitor structure. The capacitor structure including at least one lateral parallel plate capacitor part (LPP part) including two first electrodes on two different layers separated by dielectric material of a plurality of the alternating layers, and at least one vertical parallel plate capacitor part (VPP part) including two second electrodes each including a plurality of superimposed slabs or bars arranged on a plurality of the metallization layers. The at least one LPP part is electrically coupled with the at least one VPP part to form the capacitor structure. A variation in capacitance value of the at least one LPP part due to a variation of thickness of dielectric material is at least partially compensated by an opposite variation in capacitance value of the at least one VPP part.

Capacitor structure

A capacitor structure implemented using a semiconductor process. The capacitor structure includes a plurality of interdigitated positive and negative electrode fingers separated by a dielectric material, and a plurality of patterned metallization layers separated by the dielectric material. Each interdigitated electrode finger comprises a lateral part formed on one of at least two essentially parallel first metallization layers and a vertical part includes a plurality of superimposed slabs or bars disposed on a plurality of second metallization layers between said first metallization layers and electrically connected to each other and to the lateral part with a plurality of electrically conducting vias traversing through dielectric material separating adjacent metallization layers. Vertical distance between each pair of at least partially superimposed lateral parts of two adjacent electrode fingers is substantially equal to lateral distance between two adjacent vertical parts.

Capacitor structure and a chip antenna

The invention relates to a system for matching an antenna (ANT) for a wireless communication device, the system comprising: detecting means () to detect the matching of the antenna (ANT) and to generate a matching signal on the basis of the detected matching, control means () to examine said matching signal, to determine the need for matching, and to generate a control signal on the basis of said matching signal, and antenna matching means () to adjust the matching of the antenna (ANT) on the basis of said control signal. The invention relates also to a wireless communication device and a method for matching the antenna of a wireless communication device.

System for matching an antenna for a wireless communication device

A mobile station comprises means ( ) for receiving downlink data from test equipment and means ( ) for sending uplink data to the test equipment. To test data channel operation a test loop ( ) is established to loop downlink data received from the test equipment back to the uplink direction to the test equipment. During the test, the reception of downlink data and transmission of uplink data in the mobile station are controlled by a relatively low protocol level.

Method and system for testing data channel functionality in a radio apparatus

An electronic device ( ), comprising at least one circuit board ( ); an interference screen ( ) to be connected to said circuit board; and a power supply ( ) comprising a first terminal ( ) and a second terminal ( ). The device is characterized in that said screen ( ) comprises means ( ) for fixing the power supply ( ) to the screen ( ) in such a way that an electrical connection is established between the screen ( ) and the first terminal ( ) of the power supply ( ). The arrangement of the device facilitates the reliable fixing of a power supply and saves space on a circuit board in a way suited for mass production.

Growing community of inventors

Tampere, Finland

Petri Kotilainen