Resumes
Resumes
Lauri Siren Phones & Addresses
-
San Diego, CA
Publications
Us Patents
Demodulation Of An Intermediate Frequency Signal By A Sigma-Delta Converter
View pageUS Patent:
57346836, Mar 31, 1998
Filed:
Mar 29, 1996
Appl. No.:
8/624113
Inventors:
Jaakko A. Hulkko - Oulu, FI
Veijo L. H. Kontas - Oulu, FI
Lauri T. Siren - San Diego CA
Veijo L. H. Kontas - Oulu, FI
Lauri T. Siren - San Diego CA
Assignee:
Nokia Mobile Phones Limited - Salo
International Classification:
H04B 1406
H04L 2722
H04L 2722
US Classification:
375316
Abstract:
A sigma-delta signal converter is implemented using switched capacitor switching elements in which a first switch (31) serves as a mixer (11). The output of the mixer is directed to the second input of an adder (16), and its second input is the feedback signal (f1) of the sigma-delta signal converter, which is also directed into a base-frequency output signal through a decimator (14) and low-pass filtering (15).