Analysis and design of class-O RF power amplifiers for wireless communication systems

2016 ◽  
Vol 89 (2) ◽  
pp. 317-325 ◽  
Author(s):  
Muhammad Abdullah Khan ◽  
Ahmed F. Aref ◽  
Mohsin M. Tarar ◽  
Renato Negra
Keyword(s):  
Wireless Communication ◽  
Power Amplifiers ◽  
Communication Systems ◽  
Wireless Communication Systems ◽  
Rf Power Amplifiers ◽  
Rf Power ◽  
Analysis And Design

scholarly journals High-performance digital predistortion test platform development for wideband RF power amplifiers

2013 ◽  
Vol 5 (2) ◽  
pp. 149-162 ◽  
Author(s):  
Lei Guan ◽  
Ray Kearney ◽  
Chao Yu ◽  
Anding Zhu
Keyword(s):  
Wireless Communication ◽  
Power Amplifiers ◽  
Communication Systems ◽  
High Performance ◽  
Design Procedure ◽  
Test System ◽  
Rf Power Amplifiers ◽  
Digital Predistortion ◽  
Rf Power ◽  
Test Platform

In this paper, a complete design procedure, together with robust system validation approaches, is presented for implementing a high-performance re-configurable digital predistortion (DPD) test platform for compensating for nonlinear distortion and memory effects induced by radio frequency (RF) power amplifiers (PAs) in the transmitters of modern wireless communication systems. This hardware and software co-operated test system not only enables effective validation for DPD algorithm development, but also provides a high-performance and reliable hardware-based linearization test platform. The experimental test was applied on a medium power Doherty amplifier, which was designed for 3 G/4 G wireless communication base stations. By applying our DPD algorithms on the proposed platform, more than 30 dB improvements in adjacent channel power ratio can be achieved for Universal Mobile Telecommunications System and long-term evolution signal excitations.

scholarly journals Integration Study, Analysis and Design of a Flexible Antenna in OLED Light for WiMAX Wireless Communication Systems

2020 ◽  
Author(s):  
Soukaina Sekkal ◽  
Laurent Canale ◽  
Mariam El Gharbi ◽  
Adel Asselman
Keyword(s):  
Wireless Communication ◽  
Patch Antenna ◽  
Communication Systems ◽  
High Gain ◽  
Wireless Communication Systems ◽  
Light Sources ◽  
Study Analysis ◽  
Analysis And Design ◽  
Flexible Antennas ◽  
Flexible Antenna

In this work, a new flexible antenna integrated with OLED light sources is presented for WiMAX wireless communication systems. The proposed antenna was placed on a 100% polyester base with a thickness of 1.5 mm and achieved a high gain. We evaluated and tested its performance, including reflection coefficient, radiation pattern and gain. The flexible and simple patch antenna has been designed to operate at 3.5 GHz for WiMAX wireless communication systems with a gain value of 5.38 dB. This article proves the applicability of the proposed material for the integration of flexible antennas in OLEDs while maintaining gain performance similar to conventional flat antennas.

Linearization of RF Power Amplifiers in Wideband Communication Systems by Adaptive Indirect Learning Using RPEM Algorithm

2020 ◽  
Vol 25 (5) ◽  
pp. 1988-1997
Author(s):  
Duc Han Le ◽  
Van-Phuc Hoang ◽  
Minh Hong Nguyen ◽  
Hien M. Nguyen ◽  
Duc Minh Nguyen
Keyword(s):  
Power Amplifiers ◽  
Communication Systems ◽  
Rf Power Amplifiers ◽  
Rf Power
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