A 27 dBm microwave amplifier with varactors-controlled matching networks

Author

Rosolowski, Dawid W. ; Wojtasiak, Wojciech ; Gryglewski, Daniel

Author_Institution

Inst. of Radioelectron., Warsaw Univ. of Technol., Warsaw, Poland

fYear

2010

fDate

14-16 June 2010

Firstpage

1

Lastpage

4

Abstract

In this paper design and development of 27dBm medium-power amplifier with varactor-based input/output matching networks is presented. The frequency tunable range of 1.3GHz to 2.6GHz was obtained for input matching |Γ| ≤ 0.3 and power gain higher then 13dBm. Adaptive impedance matching networks provide frequency adjustment and output power level optimization by means of two voltages control. The amplifier was fabricated using surface mounted technology and conventional low-cost GaAs transistor and hyperabrupt varactors. Main parameters of the implemented amplifier with nonlinear behaviour of varactors are investigated. The device can be applied to operation with constant envelope multi-standard and multi-band radio-communication systems.

Keywords

Adaptive control; Adaptive systems; Frequency; Impedance matching; Microwave amplifiers; Power amplifiers; Power generation; Programmable control; Radiofrequency amplifiers; Varactors; Adaptive amplifiers (APAs); RF adaptivity; components for Software Defined Radio; multi-band / multi-mode devices; tunable matching networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Radar and Wireless Communications (MIKON), 2010 18th International Conference on

Conference_Location

Vilnius, Lithuania

Print_ISBN

978-1-4244-5288-0

Type

conf

Filename

5540440