Figure 10.
Load-pull (left) and power swept nonlinear data (right) for RF5110G amplifier
device information and allows the
amplifier to be treated as a black box.
When extracted properly, the result is
a model that can be used for multi-
stage nonlinear analyses and design
optimizations of individual amplifier
output or inter-stage matching circuits.
Information and simulations from
example models were used to illustrate
the type of documentation provided
for each model along with a range
of measurement validations showing
excellent correlations are possible with
nonlinear test data, even if derived
from completely independent test
benches and verifying test data not
used as part of the model development
data set.
Acknowledgements and
Additional Information
The authors would like to
thank Keysight Technologies for
collaboration related to this work
as part of the Keysight Solution
Partnership program. In particular,
we would like to thank Chad Gillease
for his great technical support and
Jose Civello of Keysight for his helpful
editing comments.
References
1.
Y Y. Niu, y, Li, D. Jin, L. Su, A Vasilakos, “A
survey of millimeter wave communications
(mmWave) for 5G: opportunities and
challenges,” Wireless Networks, Nov.
2015, Vol. 21, pp2657-2676 .
2.
X-parameters is a trademark of Keysight
Technologies.
www.keysight.com3.
J. Verspecht and D. Root,
“Polyharmonic Distortion Modeling,”
IEEE Microwave Magazine, vol. 7, no. 3,
pp. 44-57, June 2006.
4.
J. Horn, D. Root, D. Gunyan, J. Xu,
“Method and Apparatus for Determining
Response of a DUT to a Desired Large-
Signal, and for Determining Input Tones
Required to Produce a Desired Output,” US
Patent No.: US 7924026 B2, April 12, 2011.
5.
D. Root, J. Verspecht, D. Sharrit, J.
Wood and A. Cognata, “Broad-Band Poly-
Harmonic Distortion (PHD)
Behavioral Models from Fast Automated
Simulations and Large-Signal Vectoral
Network Measurements, IEEE Trans on
Microwave Theor. And Tech. Nov. 2005.,
pp 3656-3664.
6.
L. Dunleavy, J.Liu, “Understanding P2D
Nonlinear Models,” Microwaves and RF
Magazine, July 2007.
7.
J. Liu, H. Morales. L. Dunleavy and L.
Betts, “Evaluating X-Parameter, P2D and
S2D Models for Characterizing Nonlinear
behavior in Active Devices,” High Frequency
Design Magazine, November 2011.
8.
Maury Microwave Application notes 5C-
083 and 5A-041,
https://www.maurymw.com/MW_RF/Application_Notes_Library.php
9.
D. Root, J. Verspecht, J. Horn, and H.
Marcu, X-Parameters: Characterization,
Modeling, and Design of Nonlinear RF
and Microwwave Components. Cambridge
University Press, 2013.
10.
K.Kellogg, J.Liu, and L. Dunleavy, “An
EvaluationofStaticSingle-toneX-parameter
Models in Time-varying Envelope Domain
simulations of Intermodulation Distortion
Performance,”IEEE WAMICON 2015, April
2015, Cocoa Beach, FL USA.
11.
Modelithics Application Note 059:
“Advanced Microwave Amplifier Models
and X-Parameter Simulation Setup
Examples for Advanced Design System
Simulation.” Modelithics, Inc. https://
www.mode l i t h i c s . c om/ L i t e ra t u r e /
AppNote.
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