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:
Mar. 06, 2012
Filed:
Nov. 27, 2007
Mika Niemi, Kempele, FI;
Mika Niemi, Kempele, FI;
Powerwave Comtek Oy, Kempele, FI;
Abstract
The invention relates to an arrangement for bypassing a low noise amplifier unit in the front stage of a radio receiver, especially intended for the base stations of mobile communication networks. The front stage includes, in succession, a divider (), an amplifier unit () comprising two parallel, low noise amplifier branches, and a first combiner (). The by-pass arrangement includes a second combiner (), by which the halves (E, E) of the received signal are combined immediately after the divider before the amplification. A change-over switch (SW) is then used to select either the signal that has propagated through the amplifier unit and then combined (G·E) or the signal (E') that has been directly combined as the output signal of the front stage. Due to the invention, the noise figure of the front stage is improved and the integration of its structure is facilitated.