A 1.6–2.2GHz 23dBm low loss integrated CMOS duplexer

Author

Elkholy, Mohamed ; Mikhemar, Mohyee ; Darabi, Hooman ; Entesari, Kamran

Author_Institution

Texas A&M Univ., College Station, TX, USA

fYear

2014

fDate

15-17 Sept. 2014

Firstpage

1

Lastpage

4

Abstract

This paper presents a tunable integrated electrical balanced duplexer as a compact alternative to multiple bulky SAW and BAW duplexers. A floating balancing network creates a replica of the TX signal for cancellation at the input of a single-ended LNA, thus enabling high power operation. It achieves around 50dB isolation within 1.6-2.2GHz range. The cascaded noise figure of the duplexer and LNA is 6.5dB, and the TXIL of the duplexer is about 3.2dB. The maximum achieved TX power is around 23dBm suitable for WCDMA transceivers. The duplexer and LNA are implemented in CMOS 0.18μm and occupy an active area of 0.35mm².

Keywords

CMOS integrated circuits; code division multiple access; low noise amplifiers; microwave integrated circuits; multiplexing equipment; radio transceivers; BAW duplexers; SAW duplexers; TX power; TX signa; WCDMA transceivers; cascaded noise figure; floating balancing network; frequency 1.6 GHz to 2.2 GHz; integrated CMOS duplexer; single-ended LNA; size 0.18 mum; size 0.35 mm; tunable integrated electrical balanced duplexer; Antennas; CMOS integrated circuits; Impedance; Noise; Noise measurement; Ports (Computers); Tuning; 3G/4G mobile communications; balancing network; cellular phones; duplexers; impedance matching; isolation;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the

Conference_Location

San Jose, CA

Type

conf

DOI

10.1109/CICC.2014.6946041

Filename

6946041