A time-continuous optimization method for automatic adjustment of gain and phase imbalances in feedforward and LINC transmitters

Author

Shi, Bo ; Sundstrom, Lars

Author_Institution

Inst. for Commun. Res., Singapore, Singapore

Volume

1

fYear

2003

fDate

25-28 May 2003

Abstract

This paper presents a time-continuous optimization method that can be used for automatic adjustment of gain and phase imbalances in the feedforward and LINC transmitters. Details on how it can be implemented are given. In contrast to algorithm-based optimization techniques, this method does not require any decisions to be made while operating and can be realized with a continuous-time analog circuitry. The functionality of the method has been verified by means of simulations and results demonstrate that it is sufficient to suppress the out-of-band power of the radio transmitters for wireless communications.

Keywords

continuous time systems; feedforward; optimisation; radio transmitters; LINC transmitter; automatic adjustment; continuous-time analog circuit; feedforward transmitter; gain imbalance; out-of-band power suppression; phase imbalance; radio transmitter; time-continuous optimization; wireless communication; Circuit simulation; Frequency conversion; High power amplifiers; Interference; Intermodulation distortion; Linearization techniques; Optimization methods; Radio transmitters; Temperature sensors; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205496

Filename

1205496