PA calibration in TDMA antenna arrays

被引：0
|
作者：
Brauner, T [1 ]
Negra, R [1 ]
Vogt, R [1 ]
Bächtold, W [1 ]
机构：
[1] ETH, Lab Electromagnet Fields & Microwave Elect, Swiss Fed Inst Technol, CH-8092 Zurich, Switzerland
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2004年 / 14卷 / 12期
关键词：
antenna arrays; calibration; mobile communication; monolithic microwave integrated circuits (MMICs); power amplifiers; time division multiplexing;
D O I：
10.1109/lmwc.2004.837385
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The behavior, of a 5.2-GHz transmit antenna array in time division multiple acess operation is investigated, where the power amplifiers are only switched on during the data bursts. Using monolithically integrated power amplifiers, two thermal time-constants are found, associated with gain and phase changes that alter the antenna pattern. In this letter, the correlation-of these changes between multiple channels is experimentally studied to derive guidelines for the calibration of such an array. It is found that changes within the typical burst duration are well correlated and no time-dependent calibration is needed. Thermal changes linked to a second time-constant lead to a calibration error.
引用
收藏
页码：548 / 550
页数：3
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