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. 22, 2000
Filed:
Jul. 01, 1997
Applicant:
Inventors:
Martin Isberg, Lund, SE;
Bjorn Lindquist, Bjarred, SE;
Peter Jakobsson, Lund, SE;
Jan Celander, Lund, SE;
Kjell Gustafsson, Lund, SE;
Lars-Peter Kunkel, Lund, SE;
Torsten Carlsson, Lund, SE;
Jacob Mannerstrang.le, Farlov, SE;
Assignee:
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
455131 ; 455323 ; 455311 ; 455339 ; 4551501 ; 4551801 ; 4551881 ; 4551891 ; 4551901 ; 455255 ;
Abstract
A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.