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High Power Nonlinear Measurements

High power nonlinear measurements: Calibration issues, real time loadpull, and other RF data

This paper appears in:
Microwave Measurement Symposium (ARFTG), 2012 80th ARFTG
Date of Conference: 29-30 Nov. 2012
Author(s): Setzer, Claude
Wireless Technology Center, Indiana Univ.-Purdue Univ. Fort Wayne, IN, 46818 USA
Page(s): 1 - 4
Product Type: Conference Publication

Abstract

Effective high power microwave amplifier design and system modeling require accurate nonlinear models, which, in turn, require measurement of at least 3 harmonics with NIST traceable phase reference between them. Exceeding a decade of measurement bandwidth at microwave frequencies can be problematic, and a fraction of a dB of calibration error can lead to 10's of percentage points of “disappointment” in performance for the physical prototype[1]-[2]. Issues related to calibration and accurate wideband measurements for building an S Function model are presented. Pre-measurements required for efficient model extraction can include real time loadpull and “design” of the power amplifier.

Conference Location : San Diego, CA, USA
E-ISBN : 978-1-4673-4820-1
Print ISBN: 978-1-4673-4817-1
Digital Object Identifier : 10.1109/ARFTG.2012.6422435
Date of Current Version : 31 January 2013
Issue Date : 29-30 Nov. 2012