Linear high-efficiency microwave power amplifiers using bandpass delta-sigma modulators

被引：77

作者：

Jayaraman, A ^{[1
]}

Chen, PF ^{[1
]}

Hanington, G ^{[1
]}

Larson, L ^{[1
]}

Asbeck, P ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

来源：

IEEE MICROWAVE AND GUIDED WAVE LETTERS | 1998年 / 8卷 / 03期

关键词：

D O I：

10.1109/75.661135

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 amplifier configuration is described, in which a bandpass delta-sigma modulator is used to produce a two-level (digital) signal representing an analog radio frequency (RF) input. Subsequently, a switching-mode amplifier and bandpass filter are used to amplify the signal and remove unwanted spectral components. This configuration has the potential of achieving high efficiency (typical of switching mode amplifiers) together with high linearity. A simulated implementation with GaAs heterojunction bipolar transistors (HBT) is shown.

引用

页码：121 / 123

页数：3