Gain and phase error-free LINC transmitter

Author

Zhang, Xuejun ; Larson, Lawrence E.

Author_Institution

Center for Wireless Commun., California Univ., San Diego, La Jolla, CA, USA

Volume

49

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

1986

Lastpage

1994

Abstract

This paper presents a new correction technique for linear amplification with nonlinear component transmitters. During the transmit mode, the algorithm modulates and filters the baseband signal as a normal signal component separator, while during the correction mode, by use of a downconversion mixer, the gain and phase imbalance are measured and compensated by introducing a correction. This system is free of adjacent channel interference during the correction period. Analytical results and simulations demonstrate that this system is sufficient to suppress the out-of-band spectrum for mobile communications

Keywords

UHF power amplifiers; land mobile radio; radio transmitters; adjacent channel interference; baseband signal; correction mode; correction technique; downconversion mixer; gain-free LINC transmitter; linear amplification; linear amplification with nonlinear components; mobile communications; nonlinear component transmitters; normal signal component separator; out-of-band spectrum; phase error-free LINC transmitter; transmit mode; Analytical models; Baseband; Filters; Gain measurement; Interchannel interference; Mobile communication; Particle separators; Phase measurement; Phase modulation; Transmitters;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.892600

Filename

892600