Novel Hybrid Recursive Active Filters in RF Transmitter Front-Ends
Gottardo G, Donati G, Musolff C, Weigel R, Fischer G (2014)
Publication Type: Conference contribution
Publication year: 2014
Publisher: IEEE
Pages Range: 1-4
Event location: Aachen
Abstract
Duplex filters in modern base stations are designed as cavity filters, which are expensive and have big dimensions. In order to reduce the size of these filters a novel hybrid system using a power amplifier and a negative digital feedback for frequency band GSM900 is studied. A model to describe the hybrid system is investigated and the relation between phase and resonance peaks in the transfer function is described. An attenuation of 5.4 dB for the closed loop transfer function is reached. The stability condition of the system is here presented using Nyquist criterion as an important step for its future feasibility.
Authors with CRIS profile
Giuseppe Gottardo
Lehrstuhl für Technische Elektronik
Giovanni Donati
Lehrstuhl für Technische Elektronik
Christian Musolff
Lehrstuhl für Technische Elektronik
Robert Weigel
Lehrstuhl für Technische Elektronik
Georg Fischer
Professur für Technische Elektronik
How to cite
APA:
Gottardo, G., Donati, G., Musolff, C., Weigel, R., & Fischer, G. (2014). Novel Hybrid Recursive Active Filters in RF Transmitter Front-Ends. In Proceedings of the German Microwave Conference (pp. 1-4). Aachen, DE: IEEE.
MLA:
Gottardo, Giuseppe, et al. "Novel Hybrid Recursive Active Filters in RF Transmitter Front-Ends." Proceedings of the German Microwave Conference, Aachen IEEE, 2014. 1-4.
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