Title :
Design of dual-band amplifier using three-section dual-frequency matching structure
Author :
Liu, Xin ; Liu, Yuan´an ; Li, Shulan ; Wu, Fan
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, we propose a new design method for amplifiers which can operate at two arbitrary frequencies. A novel three-section transformer is presented here, to match the complex frequency-dependent impedances of transistors at two bands. Analytical equations are derived to achieve the exact closed-form solutions of three-section transformers. An amplifier is fabricated as an example, and simulation and measurement results prove the validity of the matching approach.
Keywords :
amplifiers; transformers; complex frequency-dependent impedances; dual-band amplifier design; three-section dual-frequency matching structure; three-section transformer; Closed-form solution; Design methodology; Dual band; Equations; Frequency; Impedance; Low-noise amplifiers; Microstrip antennas; Transforms; Transmission line measurements; amplifier; dual-frequency; frequency-dependent; impedance matching;
Conference_Titel :
Communications Technology and Applications, 2009. ICCTA '09. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4816-6
Electronic_ISBN :
978-1-4244-4817-3
DOI :
10.1109/ICCOMTA.2009.5349095
