The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2014
Filed:
Sep. 20, 2006
Pertti Nissinen, Kempele, FI;
Antti Leskelä, Oulu, FI;
Jari Perunka, Tupos, FI;
Zlatoljub Milosavljevic, Kempele, FI;
Petteri Annamaa, Oulunsalo, FI;
Kimmo Koskiniemi, Oulu, FI;
Pertti Nissinen, Kempele, FI;
Antti Leskelä, Oulu, FI;
Jari Perunka, Tupos, FI;
Zlatoljub Milosavljevic, Kempele, FI;
Petteri Annamaa, Oulunsalo, FI;
Kimmo Koskiniemi, Oulu, FI;
Pulse Finland Oy, Kempele, FI;
Abstract
An antenna system internal to the device especially intended for small-sized mobile stations, the system having separate operating bands. The system is implemented as decentralized in a way that the device () has a plurality of separate antennas (-). Each antenna is based on (a) radiating element(s) on the surface of a dielectric substrate. The substrate can be, for example, a piece of ceramics or a part of the outer casing of the device. The antennas are located at suitable places in the device. The operating band of an individual antenna covers the frequency range used by one radio system, the frequency ranges close to each other and is used by two different radio systems or only the transmitting or receiving band of the frequency range used by a radio system. If the device has a shared transmitter and a shared receiver for the radio systems using frequency ranges close to each other, there can anyway be a separate antenna for each system or the antenna can also be shared. The antennas can be made very small, because a relatively small bandwidth is sufficient for an individual antenna, when there is a plurality of antennas. A good matching of the antenna is achieved on the whole width of each radio system, because the matching of a separate antenna having a relatively narrow band is easier to arrange than that of a combined multi-band antenna. No switches are needed in the structure for choosing a sub-band, which contributes to good efficiency for its part.