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:
Dec. 16, 2008
Filed:
Oct. 31, 2005
Erkki Niiranen, Ii, FI;
Harri Narhi, Kempele, FI;
Jukka Puoskari, Tupos, FI;
Pertti Koskela, Kempele, FI;
Erkki Niiranen, Ii, FI;
Harri Narhi, Kempele, FI;
Jukka Puoskari, Tupos, FI;
Pertti Koskela, Kempele, FI;
Filtronic Comtek Oy, Kempele, FI;
Abstract
An arrangement for dividing the output signal of the antenna filter of a radio receiver to two different paths, such as two parallel low-noise amplifier branches of a base station. The divider circuit is physically integrated into a resonator-type antenna filter (RXF). This takes place by placing some conductors () of the divider inside some conductive part of the filter structure or the resonator cavity and by using the coupling conductor () of the output resonator as part of the input line of the divider at the same time. As the divider is used a Wilkinson divider. Due to the arrangement, a transmission line between the antenna filter and the divider becomes unnecessary, and the dielectric losses of the divider are reduced as compared to the prior art, in which case correspondingly inferior noise qualities can be allowed for low-noise amplifiers.