A Dual-Notch +27dBm Tx-Power Electrical-Balance Duplexer

Author

van Liempd, B. ; Craninckx, J. ; Singh, R. ; Reynaert, P. ; Malotaux, S. ; Long, J.R.

Author_Institution

Imec, Leuven, Belgium

fYear

2014

fDate

22-26 Sept. 2014

Firstpage

463

Lastpage

466

Abstract

An electrical-balance duplexer uses series connected step-down transformers to enhance linearity and power handling capability by reducing the voltage swing across nonlinear components. Wideband, dual-notch Tx-to-Rx isolation is demonstrated experimentally with a planar inverted-F antenna. The 0.18μm CMOS prototype achieves >50dB isolation for 220MHz aggregated bandwidth or >40dB dual-notch isolation for 160MHz bandwidth, +49dBm Tx-path IIP3 and -48dBc ACLR1 for +27dBm at the antenna.

Keywords

CMOS integrated circuits; multiplexing equipment; bandwidth 160 MHz; bandwidth 220 MHz; dual notch Tx-power electrical-balance duplexer; dual-notch isolation; nonlinear components; planar inverted-F antenna; power handling capability; series connected step-down transformers; size 0.18 mum; voltage swing; wideband dual-notch Tx-to-Rx isolation; Bandwidth; CMOS integrated circuits; Noise measurement; Radio frequency; Resistors; System-on-chip; Transformer cores; Duplexer; Electrical-Balance; Frequency Division Duplexing; Hybrid Transformer; Isolation;

fLanguage

English

Publisher

ieee

Conference_Titel

European Solid State Circuits Conference (ESSCIRC), ESSCIRC 2014 - 40th

Conference_Location

Venice Lido

ISSN

1930-8833

Print_ISBN

978-1-4799-5694-4

Type

conf

DOI

10.1109/ESSCIRC.2014.6942122

Filename

6942122