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:
Oct. 18, 2016
Filed:
May. 18, 2015
Qualcomm Incorporated, San Diego, CA (US);
Wenjing Yin, San Diego, CA (US);
Jeffrey Mark Hinrichs, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Certain aspects of the present disclosure provide a high-speed AC-coupled inverter-based buffer, which may be used as a buffer for a voltage-controlled oscillator (VCO), for example. One example buffer for a VCO generally includes a first inverter stage having an input node configured to receive a first complementary signal of a differential pair, a second inverter stage having an input node configured to receive a second complementary signal of the differential pair, a biasing stage replicating the first inverter stage or the second inverter stage, wherein an output node of the biasing stage is connected with an input node of the biasing stage, a first impedance coupled between the input node of the first inverter stage and the input node of the biasing stage, and a second impedance coupled between the input node of the second inverter stage and the input node of the biasing stage.