Hybrid Recursive Active Filters for High Selectivity in RF Transmitter Front-Ends

Gottardo G, Donati G, Musolff C, Fischer G, Felgentreff T (2015)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2015

Publisher: St. Petersburg Electrotechnical University "LETI" Symposium Proceedings - IEEE

City/Town: St. Petersburg

Pages Range: 15-18

Conference Proceedings Title: 2nd International Scientific Symposium ”Sense. Enable. SPITSE.” 2015

Event location: St. Petersburg RU

URI: http://www.eltech.ru/ru/mezhdunarodnaya-deyatelnost/spitse

Open Access Link: http://www.eltech.ru/ru/mezhdunarodnaya-deyatelnost/spitse

Abstract

Duplex filters in modern base stations are designed as cavity filters, which are expensive and have big dimensions. Thanks to the emerging digital technology and fast digital converters, it is possible to transfer the efforts of designing analog duplex filters into digital numeric algorithms applied to feedback structures, operating on power amplifiers in transmitters. The design of a digital baseband feedback applied to the analog power amplifiers is described making use of a model here verified by measurements. The design of hybrid filters allows the closed loop system to reach up to 20 dB difference between maximum gain and attenuation. Particular attention is dedicated to preserve stability conditions. The proposed architecture has the potential to reduce the cost and size of the RF front-ends.

Authors with CRIS profile

Giuseppe Gottardo Lehrstuhl für Technische Elektronik (LTE) Giovanni Donati Lehrstuhl für Technische Elektronik (LTE) Christian Musolff Lehrstuhl für Technische Elektronik (LTE) Georg Fischer Professur für Technische Elektronik

How to cite

APA:

Gottardo, G., Donati, G., Musolff, C., Fischer, G., & Felgentreff, T. (2015). Hybrid Recursive Active Filters for High Selectivity in RF Transmitter Front-Ends. In 2nd International Scientific Symposium ”Sense. Enable. SPITSE.” 2015 (pp. 15-18). St. Petersburg, RU: St. Petersburg: St. Petersburg Electrotechnical University "LETI" Symposium Proceedings - IEEE.

MLA:

Gottardo, Giuseppe, et al. "Hybrid Recursive Active Filters for High Selectivity in RF Transmitter Front-Ends." Proceedings of the 2nd International Scientific Symposium "Sense. Enable. SPITSE.", St. Petersburg St. Petersburg: St. Petersburg Electrotechnical University "LETI" Symposium Proceedings - IEEE, 2015. 15-18.

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