A 94GHz differential power amplifier in 45nm LP CMOS

Author

Deferm, Noël ; Osorio, Juan F. ; De Graauw, Anton ; Reynaert, Patrick

Author_Institution

ESAT-MICAS, K.U. Leuven, Leuven, Belgium

fYear

2011

fDate

5-7 June 2011

Firstpage

1

Lastpage

4

Abstract

This paper presents a 94 GHz 4-stage differential transformer-coupled power amplifier with capacitive neutralization. The use of transformers results in excellent common mode isolation between the different stages while providing a good impedance match. The neutralized differential pairs guarantee differential stability. The PA was designed in a 45 nm LP CMOS technology. An output 1 dB compression point of +4 dBm and a gain of 18 dB was measured. The total chip area is 0.43 mm² and the active part consumes only 0.07 mm². The 3 dB bandwidth is 14 GHz. Power consumption is 120 mW from a 1V supply, resulting in a peak PAE of 4.6%.

Keywords

CMOS integrated circuits; differential amplifiers; field effect MIMIC; impedance matching; millimetre wave power amplifiers; power amplifiers; transformers; 4-stage differential transformer-coupled power amplifier; LP CMOS; MIMIC; bandwidth 14 GHz; capacitive neutralization; common mode isolation; differential stability; frequency 94 GHz; gain 18 dB; impedance matching; millimetre wave power amplifiers; power 120 mW; size 45 nm; voltage 1 V; CMOS integrated circuits; Gain; Power amplifiers; Power generation; Stability analysis; Transistors; Transmission line measurements; CMOS; W-band; differential design; mm-wave; power amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2011 IEEE

Conference_Location

Baltimore, MD

ISSN

1529-2517

Print_ISBN

978-1-4244-8293-1

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2011.5940685

Filename

5940685