Wideband power amplifier based on Wilkinson power divider for s-band satellite communications

Abstract

This paper presents design and simulation of wideband power amplifier based on multi-section Wilkinson power divider. Class-A topology and ATF-511P8 transistor have been used. Advanced Design System (ADS) software used to simulate the designed power amplifier. The simulation results show an input return loss (S11)-10dB, gain (S21)10 dB over the entire bandwidth, and an output power around 28dBm at the Centre frequency of 3GHz. The designed amplifier is stable over the entire bandwidth (K1). Inter-modulation distortion is -65.187dBc which is less than -50dBc. The designed amplifier can be used for the microwave applications which include weather radar, satellite communication, wireless networking, mobile, and TV.

Design of high power amplifier based on wilkinson power combiner for wireless communications

“…PA is the most important block that amplifies the RF signal to power the antenna and provides the highest possible gain with the lowest possible reflectance. There have been many studies on designing and manufacturing power amplifiers performed in different frequency bands [1]- [25] and solving issues such as: increase power and efficiency [3], [6]- [8], [12], [16], increase circuit bandwidth and reduce intermodulation distortion [1], [5], [9]- [11], [13]- [15], [17]- [25].…”

“…Recently, different approaches to design high power and wideband PAs have been studyed and proposed around the world. One of the most used research directions is to rely on multi-stage power amplifier circuit [5], [8], [16]. However, this method has low reliablility, because when one of the power amplifiers fails, the system will not function.…”

“…However, this method has low reliablility, because when one of the power amplifiers fails, the system will not function. Other research directions are researched and suggested, in which the designs are based on parallel power amplifier with power divider/combiner [5], [10], [17].…”

Design and implementation of an S-band transmitter for nanosatellites with new configuration

“…Depending on purpose and requirement of user such as: weight, size, volume, budget, orbit, altitude, lifetime or payload of satellite, each transmitter was designed to satisfy these requirements [1]- [25]. These transmitters focused on solving problems: survey and compare result of method approaches [5], [6], effect of environment to this module [2], increase bandwidth [5], [11], [14], [21], increase power output [7], [16], decrease cost [3], approach very high speed integrated circuit (VHSIC) hardware description language (VHDL) in modulator [15]. Recently, variety of transmitter approached multi-stages power amplifier [11]- [13], [22], [23], or using Wilkinson power combiner method [7], [10], using technology in transmitter architecture [17] to increase power output.…”

“…These transmitters focused on solving problems: survey and compare result of method approaches [5], [6], effect of environment to this module [2], increase bandwidth [5], [11], [14], [21], increase power output [7], [16], decrease cost [3], approach very high speed integrated circuit (VHSIC) hardware description language (VHDL) in modulator [15]. Recently, variety of transmitter approached multi-stages power amplifier [11]- [13], [22], [23], or using Wilkinson power combiner method [7], [10], using technology in transmitter architecture [17] to increase power output. However, these designs have low reliability and only apply to a permanent system.…”