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Large-signal vector characterization of LDMOS devices for analysis and design of broadband Doherty high-power amplifiers

Published online by Cambridge University Press:  28 May 2019

Alessandro Cidronali Open the ORCID record for Alessandro Cidronali [Opens in a new window]  and
Giovanni Collodi
Alessandro Cidronali*
Affiliation:
Department of Information Engineering, University of Florence, V. S. Marta, 3, 50139 Florence, 50139, Italy
Giovanni Collodi
Affiliation:
Department of Information Engineering, University of Florence, V. S. Marta, 3, 50139 Florence, 50139, Italy
*
Author for correspondence: Alessandro Cidronali E-mail: [email protected]
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Abstract

We present a novel broadband large-signal vector characterization technique, suitable for high-power broadband Doherty amplifiers (DPAs). It consists of characterizing the DPA three-port sub-circuit composed of the main and peak power devices that are inter-connected by the input network. We discuss a suitable way to extract the three-port X-parameters of a DPA sub-circuit, which is based on a pair of high-power Silicon Laterally Diffused MOSFETs (LDMOSs) for UHF applications. It is then applied to the analysis of a high-power broadband DPA developed on the basis of the same DPA sub-circuit. This technique permits the broadband analysis of the operation of the DPA, as well as to get insight on the load modulation for both the peak and main devices, while they mutually interact through the input network. Measurements and simulated data in the 700–960 MHz bandwidth are compared so as to demonstrate the feasibility of three-port X-parameters characterization for high-power DPAs in UHF band.

Keywords

Broadband PAsDoherty power amplifierslarge-signal vector networkanalysissilicon LDMOSX-parameters
Type
EuMW 2018
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Special Issue 7: MIKON 2018 / EuMW 2018 (Part II) , September 2019 , pp. 666 - 675
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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References

1.Root, DE, Verspecht, J, Sharrit, D, Wood, J and Cognata, A (2005) Broad-band poly-harmonic distortion (PHD) behavioral models from fast automated simulations and large-signal vectorial network measurements. IEEE Transactions on Microwave Theory and Techniques 53, 3656–3664.Google Scholar
2.Li, SH, Hsu, SS, Zhang, J and Huang, KC (2018) Design of a compact GaN MMIC Doherty power amplifier and system level analysis with X-parameters for 5G communications. IEEE Transactions on Microwave Theory and Techniques 66, 5676–5684.Google Scholar
3.Nielsen, TS, Dieudonne, M, Gillease, C and Root, DE (2012) Doherty power amplifier design in Gallium nitride technology using a nonlinear vector network analyzer and X-parameters. IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS), La Jolla, CA.Google Scholar
4.Wood, J and Collins, G (2010) Investigation of X-parameters measurements on a 100 W Doherty power amplifier. 75th ARFTG Microwave Measurement Conference, Anaheim, CA.Google Scholar
5.Bathich, K and Boeck, G (2015) Design and analysis of 80-W wideband asymmetrical Doherty amplifier. International Journal of Microwave and Wireless Technologies 7, 13–18.Google Scholar
6.Probst, S, Denicke, E and Geck, B (2017) In situ waveform measurements within Doherty power amplifier under operational conditions. IEEE Transactions on Microwave Theory and Techniques 65, 2192–2200.Google Scholar
7.Cidronali, A, Accillaro, C and Manes, G (2007) Mildly nonquasi-static two-port device model extraction by integrating linearized large-signal vector measurements. IEEE Transactions on Microwave Theory and Techniques 55, 2277–2289.Google Scholar
8.Casini, G, Cidronali, A and Manes, G (2013) Investigation of X-parameters modeling for accurate envelope tracking power amplifier system simulations. Proceedings of IEEE MTT-S International Microwave Symposium Digest, Seattle, WA, USA.Google Scholar
9.Verspecht, J, Horn, J and Root, DE (2010) A simplified extension of X-parameters to describe memory effects for wideband modulated signals. Proceedings of 2010 IEEE Microwave Measurements Conference Digest (ARFTG), Anaheim, CA, USA.Google Scholar
10.Roblin, P, Root, DE, Verspecht, J, Ko, Y and Teyssier, JP (2012) New trends for the nonlinear measurement and modeling of high-power RF transistors and amplifiers with memory effects. IEEE Transactions on Microwave Theory and Techniques 60, 1964–1978.Google Scholar
11.Cidronali, A and Collodi, G (2018) X-parameter characterization of LDMOS devices for broadband Doherty high-power amplifier design. Proceedings of 13th European Microwave Integrated Circuits Conference (EuMIC), Madrid, Spain.Google Scholar
12.Lucarelli, M, Maddio, S, Collodi, G and Cidronali, A (2017) A wideband quadrature power splitter covering 81.75% fractional bandwidth in single layer via less technology. Microwave and Optical Technology Letters 59, 142–145.Google Scholar
13.Avitabile, GF, Cidronali, A, Salvador, C and Speciale, M (1997) Compact MMIC 90 coupler for ISM applications. Proceedings of IEEE MTT-S International Microwave Symposium Digest, Denver, CO, USA, USA.Google Scholar
14.Ahn, H-R (2006) Asymmetric passive components in microwave integrated circuits. Hoboken, NJ: John Wiley and Sons.Google Scholar
15.Liu, Q, Liu, Y, Shen, J, Li, S, Yu, C and Lu, Y (2014) Wideband single-layer 90 phase shifter using stepped impedance open stub and coupled-line with weak coupling. IEEE Microwave and Wireless Components Letters 24, 176–178.Google Scholar
16.Cidronali, A, Giovannelli, N, Maddio, S, Del Chiaro, A, Schuberth, C, Magesacher, T and Singerl, P (2016) A 280 W LDMOS broadband Doherty PA with 52% of fractional bandwidth based on a multi-line impedance inverter for DVB-T applications. International Journal of Microwave and Wireless Technologies 8, 1141–1153.Google Scholar
17.Klopfenstein, RW (1956) A transmission line taper of improved design. Proceedings of the IRE 44, 31–35.Google Scholar
18.Cidronali, A, Gupta, KC, Jargon, J, Remley, KA, DeGroot, D and Manes, G (2003) Extraction of conversion matrices for P-HEMTs based on vectorial large-signal measurements, Proceedings of IEEE MTT-S International Microwave Symposium Digest, Philadelphia, PA, USA.Google Scholar
19.Peyton Jones, JC and Billings, SA (1991) Describing functions, Volterra series, and the analysis of non-linear systems in the frequency domain. International Journal of Control 53, 871–887.Google Scholar
20.Lee, C, Lin, Y, Lin, W and Lee, C (2016) A simple and fast de-embedding procedure of X-parameter measurement for RF transistor characterization in the large-signal operating region, Proceedings of IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), Taipei, Taiwan.Google Scholar
21.Cidronali, A, Maddio, S, Giovannelli, N and Collodi, G (2016) Frequency analysis and multiline implementation of compensated impedance inverter for wideband Doherty high-power amplifier design. IEEE Transactions on Microwave Theory and Techniques 64, 1359–1372.Google Scholar