CMOS polar transmitter with wide power control range

Author

Lin, Hsin-Chang ; Chen, Jau-Horng

Author_Institution

Dept. of Eng. Sci. & Ocean Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

50

Issue

3

fYear

2014

fDate

January 30 2014

Firstpage

151

Lastpage

153

Abstract

A dual-phase pulse-modulated polar transmitter (PMPT) for wide power control range (PCR) applications is presented. For the validation of the proposed architecture, a radio-frequency (RF) PMPT chip is implemented with a standard 0.18 μm 1P6M mixed-signal CMOS process. The measurement results show that by using the proposed technique, wide PCR transmitters can be implemented accurately with low hardware requirements. An RF variable-gain amplifier with just 21 dB of dynamic range is sufficient to pass the 80 dB PCR of the CDMA2000 standard. Compared with a conventional transmitter utilising linear power amplifiers, the proposed architecture has the potential of achieving much higher efficiency while being able to achieve chip-level integration with eased circuit design specification.

Keywords

CMOS integrated circuits; integrated circuit design; integrated circuit measurement; mixed analogue-digital integrated circuits; pulse amplifiers; pulse modulation; radio transmitters; radiofrequency integrated circuits; radiofrequency power amplifiers; CDMA2000 standard; CMOS polar transmitter; PCR transmitter; RF PMPT chip; RF variable-gain amplifier; chip-level integration; circuit design specification; dual-phase pulse-modulated polar transmitter; gain 21 dB; gain 80 dB; linear power amplifier; radiofrequency PMPT chip; size 0.18 mum; standard 1P6M mixed-signal CMOS process; wide power control range application;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2013.3752

Filename

6731732