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. 09, 2018
Filed:
Jan. 18, 2017
Skyworks Solutions, Inc., Woburn, MA (US);
Joshua Haeseok Cho, Irvine, CA (US);
Yunyoung Choi, Irvine, CA (US);
Bipul Agarwal, Irvine, CA (US);
SKYWORKS SOLUTIONS, INC., Woburn, MA (US);
Abstract
Digitally controlled attenuators with low phase shift are provided herein. In certain configurations, a digitally controlled attenuator includes an attenuation circuit electrically connected between an input terminal and an output terminal, a bypass circuit electrically connected in parallel with the attenuation circuit between the input terminal and the output terminal, and a plurality of phase compensation capacitors including a first phase compensation capacitor and a second phase compensation capacitor electrically connected in series between the input terminal and the output terminal. The bypass circuit is configured to receive a mode control signal for selecting the bypass circuit to control an amount of attenuation between the input terminal and the output terminal. Additionally, the phase compensation capacitors are operable to compensate for a phase difference between a first signal path through the attenuation circuit and a second signal path through the bypass circuit.