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A 24 GHz PHEMT-based oscillator

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4 Author(s)
A. Lewandowski ; Inst. of Electron. Syst., Warsaw Univ. of Technol., Poland ; G. Kompa ; W. Mwema ; W. Wiatr

Presents 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 the design.

Published in:

Microwaves, Radar and Wireless Communications, 2002. MIKON-2002. 14th International Conference on  (Volume:2 )

Date of Conference:

2002