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:
Apr. 28, 2009
Filed:
Sep. 01, 2006
Erkki Niiranen, Ii, FI;
Harri Närhi, Kempele, FI;
Jukka Puoskari, Tupos, FI;
Pertti Koskela, Kempele, FI;
Erkki Niiranen, Ii, FI;
Harri Närhi, Kempele, FI;
Jukka Puoskari, Tupos, FI;
Pertti Koskela, Kempele, FI;
Filtronic Comtek Oy, Kempele, FI;
Abstract
An arrangement for processing the antenna signal of a radio receiver and for leading it to low-noise amplifiers LNA of parallel amplifier branches. On the transmission path of the receiver from the antenna to the amplifiers LNA, functionally different elements are combined into physically united elements, such as the conductors () of the low-passing part of the antenna filter and the division conductors of the Wilkinson divider (), and the conductor () of the phase-shifter and the inductive part (L) of the LNA matching circuit. Each physically united element is a conductor, which is insulated from the ground plane by air or a low-loss dielectric material. The arrangement reduces the number of lossy parts between the antenna and the amplifiers, and placing these parts on an ordinary circuit board is also avoided. For these reasons, inferior noise values compared to the prior art can be allowed for each LNA. In addition, the matching of the input impedance of the LNA becomes more accurate when no discrete coil is needed in it.