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:
Jan. 17, 2017
Filed:
May. 21, 2015
Applicant:
Analog Devices Global, Hamilton, BM;
Inventors:
Yusuf Alperen Atesal, Istanbul, TR;
Peter J. Katzin, Arlington, MA (US);
Assignee:
Analog Devices Global, Hamilton, BM;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 11/24 (2006.01); H03H 7/25 (2006.01);
U.S. Cl.
CPC ...
H03H 11/245 (2013.01); H03H 7/25 (2013.01);
Abstract
Apparatus and methods for reducing glitches in digital step attenuators are disclosed. By configuring a multi-bit DSA such that an attenuation control block changes a plurality of control signals in a manner sequencing individual switches of the DSA, glitches can be reduced and RF signal behavior can be enhanced. The sequence, based upon a unit time delay, causes the transient attenuation value to be bounded between a minimum and maximum and can improve settling time.