Lumped element radio frequency tuning calibration process

US9647632B2 · kind B2 · utility

Assignee

• ADVANTEST CORPORATION · JP

Inventors

• Donald M. Lee · Huntington, US
• Heidi Barnes · Forestville, US
• Kosuke Miyao · Sunnyvale, US
• Bela Szendrenyi · Santa Rosa, US
• Vanessa Bischler · Kehl, DE

Key dates

• Filing date: Jan 28, 2014
• Grant date: May 9, 2017
• Expiry date: Oct 2, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/2822
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A preferred method for efficiently tuning RF ports while avoiding conventional labor intensive, step-by-step processes is disclosed. The method may use at least three tuning blocks (comprised of capacitors and inductors) in a series topology and at least three tuning blocks in a shunt topology. These tuning blocks will yield two circles that can be charted on the Smith chart. Those circles may then be centered along the centerline of the Smith chart to adjust for latency, and then expanded to adjust for the losses. Once those circles have been expanded, the circle (either series or shunt) that encompasses one the Smith chart reference circles is used and the traditional Smith chart methodology can be used to tune the RF port.