Bias circuit design of RF power amplifiers for TDD systems

Author

Zhang, Ying ; Ye, Yan ; Liu, Taijun ; Li, Liang ; Xu, Gaoming ; Zhang, Juan ; Li, Jun

Author_Institution

Coll. of Inf. Sci. & Eng., Ningbo Univ., Ningbo, China

fYear

2011

fDate

9-11 Sept. 2011

Firstpage

2572

Lastpage

2575

Abstract

In Time Division Duplex(TDD) system, the radio frequency (RF) power amplifier in a repeater is turned on only when it receives RF signal, thus implementing the sub-frame synchronization and the second conversion point of timeslots is important in TDD system. This paper introduce a bias circuit design to realize the control of the RF power amplifier in the down-link through envelop detection of the received RF signal. The experimental results demonstrated that the proposed bias circuit can properly control the operation status of the power amplifier for a TD-SCDMA system.

Keywords

code division multiple access; power amplifiers; radiofrequency amplifiers; repeaters; synchronisation; time division multiplexing; RF power amplifier; RF signal; TD-SCDMA system; TDD system; bias circuit design; radio frequency power amplifier; repeater; subframe synchronization; time division duplex; Base stations; Power amplifiers; Radio frequency; Repeaters; Resource management; Synchronization; Time division synchronous code division multiple access; TDD; bias circuit; envelope detection; power amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Communications and Control (ICECC), 2011 International Conference on

Conference_Location

Ningbo

Print_ISBN

978-1-4577-0320-1

Type

conf

DOI

10.1109/ICECC.2011.6066371

Filename

6066371