A 24 GHz PHEMT-based oscillator

Authors

DOI:

https://doi.org/10.26636/jtit.2003.1.160

Keywords:

microwave oscillato, oscillator design method, negative resistance, describing function, , nonlinear PHEMT model, microstrip components models

Abstract

We present a systematic nonlinear procedure for designing microwave oscillators utilising a nonlinear PHEMT model, the negative resistance approach and the describing function concept. The procedure is applied in the design of a 24 GHz oscillator, which is then realised in hybrid technology. Measurement results show -6% shift in the frequency but an acceptable agreement in the output power. A detailed analysis shows that the frequency shift arises mainly from inadequate CAD models in the K band, for the microstrip components employed in our design.

Downloads

Download data is not yet available.

References

[1] I. Schmale, "Entwicklung eines konsistenten elektrothermischen Grosssignalmodells für Feldeffekttransistoren als Grundlage für den zuverlässigen Entwurf monolitischer Frequenzverdoppler". Ph.D. thesis, Universität Gesamthochschule Kassel, Kassel, 1999.
View in Google Scholar

[2] E. Wasige, H. J. de la Torre, I. Ak-Layla, and G. Kompa, "An analytical design procedure for microwave oscillators based on S-parameters", in Int. IEEE Worksh. Experim. Bas. FET Dev. Model. Relat. Nonlin. Circ. Des., Universität Gesamthochschule Kassel, Kassel, 1997, pp. 41.1-41.3.
View in Google Scholar

[3] G. Gonzalez, Microwave Transistor Amplifiers: Analysis and Design. Englewood Cliffs, NJ: Prentice-Hall, 1997.
View in Google Scholar

[4] R. Howald, "A 24 GHz HEMT microstrip oscillator using linear and nonlinear CAD techniques", Microw. J., pp. 80-93, May 1994.
View in Google Scholar

[5] S. Savaria and P. Champagne, "Linear simulators for use in oscillator design", Microw. J., pp. 98-105, May 1995.
View in Google Scholar

[6] M. Odyniec, "Oscillator stability analysis", Microw. J., pp. 66-76, June 1999.
View in Google Scholar

[7] A. Lewandowski, "Generator sygnału sinusoidalnego 24 GHz". Praca magisterska, Wydział Elektroniki i Technik Informacyjnych, Politechnika Warszawska, Warszawa, 2001 (M.Sc. thesis in Polish).
View in Google Scholar

[8] H. Abe, "A GaAs MESFET oscillator quasi-linear design method", IEEE Trans. Microw. Theory Tech., vol. MTT-34, pp. 19-25, 1986.
View in Google Scholar

[9] A. V. Grebennikov, "Microwave transistor oscillators: an analytic approach to simplify computer-aided design", Microw. J., pp. 292-300, May 1999.
View in Google Scholar

[10] P. André, J. Dienot et al., "Microwave oscillator design from load cycle optimisation - application to MMIC GaAs MESFET oscillator", in Proc. 24th EuMC, 1994, pp. 831-835.
View in Google Scholar

[11] I. Angelov, H. Zirath, and N. Rorsman, "A new empirical model for HEMT and MESFET devices", IEEE Trans. Microw. Theory Tech., vol. MTT-40, pp. 2258-2266, 1992.
View in Google Scholar

[12] U. Schaper and A. Werthof, "Large-signal HEMT model for resistive mixer design", in Int. IEEE Worksh. Experim. Bas. FET Dev. Model. Relat. Nonlin. Circ. Des., Universität Gesamthochschule Kassel, Kassel, 1997, pp. 26.1-26.5.
View in Google Scholar

[13] F. Lin and G. Kompa, "FET model parameter extraction based on optimization with multiplane data-fitting and bidirectional search - a new concept", IEEE Trans. Microw. Theory Tech., vol. MTT-42, pp. 1114-1120, 1994.
View in Google Scholar

[14] W. Mwema and G. Kompa, "A new simplified and reliable HEMT modelling approach using pinched cold FET S-parameters", in Proc. MTTS 2000.
View in Google Scholar

[15] A. Gelb and W. Vander Velde, Multiple-Input Describing Functions and Nonlinear System Design. New York: McGraw-Hill Book Company, 1968.
View in Google Scholar

[16] K. Kurokawa, "Some basic characteristics of broadband negative resistance oscillator circuits", Bell Syst. Tech. J., pp. 1937-1955, July-Aug. 1969.
View in Google Scholar

[17] A. Lewandowski and W. Wiatr, "Verification of CAD models for microstrip components using FD-TD method", in Proc. 14th Microw. Conf. MIKON-2002, Gdańsk, Poland, May 2002, pp. 357-360.
View in Google Scholar

[18] E. Wasige, G. Kompa, F. van Raay, W. Scholz, I. Rangelow, F. Shi, R. Kassing, R. Meyer, and M.-C. Amann, "A new technological concept for optimum circuit design at microwave and milimeterwave frequencies", in Int. IEEE Worksh. Experim. Bas. FET Dev. Model. Relat. Nonlin. Circ. Des., Universität Gesamthochschule Kassel, Kassel, 1997, pp. 23.1-23.5.
View in Google Scholar

Downloads

Submitted

2023-04-07

Published

2003-03-30

Issue

No. 1 (2003)

Section

RESEARCH ARTICLES

License

Copyright (c) 2003 Journal of Telecommunications and Information Technology

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
A. Lewandowski, G. Kompa, W. Mwema, and W. Wiatr, “A 24 GHz PHEMT-based oscillator”, JTIT, vol. 11, no. 1, pp. 15–19, Mar. 2003, doi: 10.26636/jtit.2003.1.160.

Most read articles by the same author(s)