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. 06, 2001
Filed:
Sep. 11, 1997
Applicant:
Inventors:
Panu Hagström, Oulu, FI;
Seppo Yrjölä, Oulu, FI;
Assignee:
LK-Products OY, Kempele, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M 1/100 ; H04B 1/40 ;
U.S. Cl.
CPC ...
H04M 1/100 ; H04B 1/40 ;
Abstract
A dual mode radio apparatus has an integrated filtering part (,) which includes an antenna port (,) for connection to an antenna (,), at least one port (,) for connection to each of the system-specific radio-frequency parts (,) of the dual mode radio apparatus and filtering means for directing the propagation of signals between ports on the basis of the signal frequency. The integrated filtering part replaces earlier separate filters and their impedance matching circuits as well as some of the required radio-frequency switches.