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. 24, 2017
Filed:
Jul. 28, 2015
Apparatus and methods for a variable gain passive attenuator with multiple layer attenuation devices
Applicant:
Analog Devices, Inc., Norwood, MA (US);
Inventor:
Edward P. Jordan, Kernersville, NC (US);
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 11/24 (2006.01); H03H 7/40 (2006.01);
U.S. Cl.
CPC ...
H03H 11/245 (2013.01); H03H 7/40 (2013.01);
Abstract
Provided herein are apparatus and methods for a variable gain passive attenuator with multiple layer attenuation devices. In certain configurations, at least two rows of stacked FETs are layered in blocks, namely H (horizontal) blocks in a hierarchical schematic representation of the variable gain passive attenuator. Each stack of FETs receives a control signal, and by delaying a second control signal with respect to a first control signal, performance and linearity can be enhanced while insertion loss is reduced.