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Analysis and design of microwave linearized amplifiers using active feedback

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3 Author(s)
E. Ballesteros ; Dept. de Microondas, ETSI de Telecommun., Univ. Politecnico de Madrid, Spain ; F. Perez ; J. Perez

Intermodulations distortion of active feedback amplifier systems has been analyzed using a simple method. Starting from the amplitude characteristic of both amplifiers-the main and the auxiliary-it is possible to calculate the intermodulation distortion of the complete system. Analytical results show that third-order intermodulation products can be considerably reduced when active feedback with correct amplitude and phase is used. Experimental measurements that confirm the theoretical analysis have been made on a one-stage bipolar transistor amplifier

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IEEE Transactions on Microwave Theory and Techniques  (Volume:36 ,  Issue: 3 )