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:
Feb. 28, 2012
Filed:
Nov. 07, 2005
Erkki Niiranen, Ii, FI;
Jouni Ala-kojola, Kempele, FI;
Erkki Niiranen, Ii, FI;
Jouni Ala-Kojola, Kempele, FI;
Powerwave Comtek Oy, Kempele, FI;
Abstract
An arrangement for filtering the transmitting signals in a radio device using frequency division duplex. In a radio transmitter, in which the transmitting signal is divided to a plurality of antennas radiating to different sectors, the filtering required in transmitting is mostly carried out by a shared transmitting filter before the transmitting signal is divided. The rest of the filtering is carried out separately on each partial transmitting signal in the reduced transmitting side of the duplex filter. The filters and the divider form an integrated filter unit, in which they are connected to each other by simple coupling elements. The space required for the filters of the antenna end of the radio device is significantly reduced, and the material and assembly costs of the antenna end in production are reduced.