A CMOS Envelope-Tracking Transmitter With an On-Chip Common-Gate Voltage Modulation Linearizer

Author

Woo-Young Kim ; Hyuk Su Son ; Joon Hyung Kim ; Joo Young Jang ; Inn Yeal Oh ; Chul Soon Park

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea

Volume

24

Issue

6

fYear

2014

fDate

41791

Firstpage

406

Lastpage

408

Abstract

This letter presents a fully integrated CMOS envelope-tracking transmitter with an on-chip common-gate voltage modulation linearizer that achieves an average output power of 26/23.5 dBm with a PAE of 33/28%, an ACLR of -33 / -32.5 dBc at a frequency of 1.9 GHz for 3.84 MHz BW 3.5 dB PAPR WCDMA and 5 MHz BW 7.5 dB PAPR LTE signals in an 0.18-μm CMOS process. The CMOS ET transmitter is integrated with an envelope amplifier, two pairs of saturated power amplifiers, and an on-chip linearizer. The total chip size is 2.5 × 1.5 mm² with the input/output on-chip transformers and matching networks.

Keywords

CMOS integrated circuits; Long Term Evolution; UHF power amplifiers; code division multiple access; radio transmitters; transformers; CMOS envelope-tracking transmitter; CMOS process; LTE signals; WCDMA; efficiency 28 percent; efficiency 33 percent; envelope amplifier; frequency 1.9 GHz; frequency 3.84 MHz; frequency 5 MHz; matching networks; on-chip common-gate voltage modulation linearizer; on-chip transformers; saturated power amplifiers; size 0.18 mum; CMOS integrated circuits; Modulation; Multiaccess communication; Power generation; Spread spectrum communication; System-on-chip; Transmitters; CMOS; envelope elimination and restoration (EER); envelope tracking (ET); linearizer; long term evolution (LTE); multi-band; power amplifier (PA); wideband code division multiple access (WCDMA);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2014.2313593

Filename

6809853