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. 21, 2017
Filed:
Jun. 22, 2015
Skyworks Solutions, Inc., Woburn, MA (US);
Jonathan Christian Crandall, Marion, IA (US);
Kenneth Norman Warren, Anamosa, IA (US);
Philip H. Thompson, Cedar Rapids, IA (US);
SKYWORKS SOLUTIONS, INC., Woburn, MA (US);
Abstract
Apparatus and methods for controlling radio frequency (RF) switches are disclosed. Provided herein are apparatus and methods for controlling RF switches. In certain configurations, an RF system includes a charge pump for generating a charge pump voltage, an RF switch, a level shifter for turning on or off the RF switch, and a level shifter control circuit for controlling the level shifter. The charge pump receives a mode signal used to enable or disable the charge pump. Additionally, the level shifter receives power in part from the charge pump voltage, and controls the RF switch based on a switch enable signal. The level shifter control circuit receives the mode signal and biases the level shifter with a bias voltage that changes based on a state of the mode signal.