A novel DAC based switching power amplifier for polar transmitter

被引：4

作者：

Shameli, Amin ^{[1
,2
]}

Safarian, Aminghasem ^{[1
,2
]}

Rofougaran, Ahmadreza ^{[2
]}

Rofougaran, Maryam ^{[2
]}

De Flaviis, Franco ^{[1
]}

机构：

[1] Univ Calif Irvine, Irvine, CA 92697 USA

[2] Broadcom Corp, Irvine, CA 92619 USA

来源：

PROCEEDINGS OF THE IEEE 2006 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2006年

关键词：

D O I：

10.1109/CICC.2006.320851

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：

A novel switching power amplifier based on the concept of digital to analog converter (DAC) is presented for polar transmitter architecture. The novel idea in this amplifier is to generate a current proportional to the amplitude modulation signal and the power control bits. The current is then upconverted to the frequency of interest using switching transistors. In this paper, we demonstrate that the performance of the proposed circuit is superior compare to the existing power amplifiers designed for polar transmitter. The measurement results show maximum output power of 27.8dBm with power efficiency of 34%. Moreover, the amplifier exhibits amplitude modulation bandwidth of 4.2MHz and 62dB power control dynamic range. The circuit is fabricated in CMOS 0.18 mu m process with 3.3V power supply.

引用

页码：137 / 140

页数：4

共 6 条

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