A low out-of-band noise LTE transmitter with current-mode approach

Author

Codega, Nicola ; Liscidini, Antonio ; Castello, Rinaldo

Author_Institution

Univ. of Pavia, Pavia, Italy

fYear

2013

fDate

16-20 Sept. 2013

Firstpage

283

Lastpage

286

Abstract

A 55nm CMOS current-mode transmitter for multistandard wireless communications (including LTE) that requires only 1.5mm² (with 4 output ports) is presented. The circuit is made up of two portions: a class A/B up-converter and a baseband that includes DAC, VGA, low-pass filter (two Biquad plus a passive first order) and class A/B signal conditioner. Combining a third order filter with the class A/B conditioner results in a reduction of both current consumption and RX-band noise injection. For LTE10, the consumption is 96mW and 34mW at 4dBm and at -10dBm output power, respectively. The complete transmitter gives -158dBc/Hz RX-band noise injection at 30MHz offset.

Keywords

CMOS integrated circuits; Long Term Evolution; biquadratic filters; current-mode circuits; digital-analogue conversion; integrated circuit noise; low-pass filters; passive filters; radio transmitters; Biquad filter; CMOS current-mode transmitter; DAC; RX-band noise injection; VGA; class A-B signal conditioner; class A-B up-converter; current consumption; low out-of-band noise LTE transmitter; low-pass filter; multistandard wireless communication; passive first order filter; power 34 mW; power 96 mW; size 55 nm; third order filter; CMOS integrated circuits; Filtering; Mirrors; Mixers; Noise; Standards; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC (ESSCIRC), 2013 Proceedings of the

Conference_Location

Bucharest

ISSN

1930-8833

Print_ISBN

978-1-4799-0643-7

Type

conf

DOI

10.1109/ESSCIRC.2013.6649128

Filename

6649128