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:
Jul. 18, 2017
Filed:
Apr. 07, 2016
Analog Devices Global, Hamilton, BM;
Bilal Tarik Cavus, Istanbul, TR;
Ozgun Serttek, Istanbul, TR;
ANALOG DEVICES GLOBAL, Hamilton, BM;
Abstract
Apparatus and methods for biasing radio frequency (RF) switches are provided herein. In certain configurations, an RF switching circuit includes a field effect transistor (FET) switch electrically connected between a first terminal and a second terminal, and an adaptive biasing circuit that generates a bias voltage used in part to bias a gate of the FET switch. The adaptive biasing circuit includes a low pass filter that generates a low pass filtered voltage based on low pass filtering a voltage of the first terminal, a buffer circuit that receives the low pass filtered voltage and generates a buffered voltage, and a voltage shifting circuit that generates the bias voltage by shifting the buffered voltage by an amount of voltage that depends on a state of a switch control signal.