The Open Electrical & Electronic Engineering Journal

2008, 2 : 45-49
Published online 2008 June 4. DOI: 10.2174/1874129000802010045
Publisher ID: TOEEJ-2-45

A Novel and Simple Maximum Available Gain Equalization Technique for Microwave Amplifiers

C. de la Morena-Álvarez-Palencia , M. Burgos-García and F. Pérez-Martínez
Department of Signals, Systems and Radiocommunications, Polytechnical University of Madrid, Spain.

ABSTRACT

A novel method to equalize the maximum available gain (MAG) is presented. The method is based on the introduction of a simple interstage network between two transistors, where the set is treated as a single element. The technique provides not only excellent gain flatness but also two additional advantages relative to conventional designs: simpler matching networks and smaller size. The method is simple, and the design is easy. A high gain L-band amplifier prototype has been developed to verify the equalization technique, achieving a few hundredths of dB gain flatness variation over the operation bandwidth.