Noise reduction in digitizing systems

US10502763B2 · kind B2 · utility

Assignee

• Tektronix, Inc. · US

Inventors

• Barton T. Hickman · Portland, US
• John J. Pickerd · Hillsboro, US
• Pirooz Hojabri · San Jose, US
• Patrick Satarzadeh · Addison, US
• Khadar Baba Shaik · Davis, US

Key dates

• Filing date: Dec 30, 2016
• Grant date: Dec 10, 2019
• Expiry date: Aug 12, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03M1/12
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed are systems and methods related to a noise reduction device employing an analog filter and a corresponding inverse digital filter. The combination and placement of the filters within the systems aids in reducing noise introduced by processing the signal. In some embodiments, the combination of filters may also provide for increased flexibility when de-embedding device under test (DUT) link attenuation at higher frequencies. Further, the filters are adjustable, via a controller, to obtain an increased signal to noise ratio (SNR) relative to a signal channel lacking the combination of filters. Additional embodiments may be disclosed and/or claimed herein.