𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Advanced design methods for a high efficiency Doherty power amplifier

✍ Scribed by Xiaoqun Chen; Yuchun Guo; Xiaowei Shi

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
273 KB
Volume
50
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In this study, a special inverted Doherty topology and uneven power drive methods are proposed to optimize the efficiency and appropriate load modulation. The amplifier is optimized at large power back‐off. The power added efficiency and adjacent channel leakage ratio (ACLR) are 33.1% and βˆ’47 dBc, which improve by 3.2% and 5 dB, respectively, and its third‐order intermodulation distortion (IMD3) has 2 .5 dB improvement compared with conventional Doherty power amplifier. Β© 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1330–1333, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23375

πŸ“œ SIMILAR VOLUMES

A novel Doherty power amplifier with sel
A novel Doherty power amplifier with self-adaptive biasing network for efficiency improvement
✍ Shichang Chen; Quan Xue πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons 🌐 English βš– 142 KB

## Abstract A Doherty power amplifier (DPA) with a self‐adaptive biasing circuit is presented in this letter. The proposed structure is integrated into the gate biasing network of the peaking power amplifier (PA), and then the gate voltage can be adaptively adjusted with the input power. Due to the

Itrative design-oriented analysis method
Itrative design-oriented analysis method for class-ab high-efficiency microwave power amplifiers
✍ Giannini, Franco ;Leuzzi, Giorgio ;Limiti, Ernesto ;Scucchia, Lucio πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 422 KB

## Abstract Optimum choice of bias point, load and drive level for solid‐state power amplifiers is performed via a design methodology based on a novel iterative analysis method. The effectiveness of the proposed methodology and the corresponding level of accuracy is demonstrated through a compariso

Design of a high efficiency power amplif
Design of a high efficiency power amplifier with input and output harmonic terminations
✍ S. F. Ooi; S. K. Lee; A. Sambell; E. Korolkiewicz; P. Butterworth πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 395 KB

## Abstract In this article it is shown, how, using the load/source pull method to generate the current/voltage waveforms of a class‐F power amplifier, the optimum load, and source impedances at the first three harmonics are obtained. Novel harmonic controllable matching networks are then used to o

A wideband digital predistortion for hig
A wideband digital predistortion for highly linear and efficient GaN HEMT Doherty power amplifier
✍ Mun-Woo Lee; Yong-Sub Lee; Sang-Ho Kam; Yoon-Ha Jeong πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 413 KB

## Abstract In this article, we propose the wideband digital predistortion (WDPD) for a highly linear and efficient GaN HEMT Doherty power amplifier (DPA). The WDPD is composed of the memory less DPD and the memory system, which compensates for the memory effects to achieve a highly linear wideband

A low-intermodulation, high-efficiency h
A low-intermodulation, high-efficiency harmonic-controlled amplifier for high-power applications in mobile communications satellites
✍ Yoshikazu Dooi; Akio Iso; Kenji Sekine; Naofumi Okubo; Haruhiko Hunaki πŸ“‚ Article πŸ“… 1992 πŸ› John Wiley and Sons 🌐 English βš– 929 KB

## Abstract Recently, research and development of mobile communications satellites has progressed in every country, and the key technologies for improvement have increased the output power and efficiency of solid‐state power amplifiers used in high‐output transponders for satellite payloads and dec