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Conference Publication

A dual-frequency 0.7-to-1GHz balance network for electrical balance duplexers

Host Publication: IEEE International Solid-State Circuits Conference

Authors: B. Hershberg, B. Van Liempd, X. Zhang, P. Wambacq and J. Craninckx

Publisher: IEEE

Publication Date: Jan. 2016

Number of Pages: 2

ISBN: 978-1-4673-9466-6


Abstract:

An electrical-balance duplexer (EBD) is a tunable RF front-end concept that seeks to address several key challenges of 4G and 5G mobile systems [1]. The basic principle is shown in Fig. 20.8.1. Duplexer isolation is achieved when the signals in paths 1 and 2 cancel and prevent the TX signal from appearing at the RX port. This cancellation is achieved by "balancing" the antenna impedance ZANT with an on-chip tunable impedance ZBAL.

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Mr. Barend Van Liempd

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bvanliem@etrovub.be

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Prof. Piet Wambacq

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pwambacq@etrovub.be

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