Title :
A frequency tunable amplifier for DCS-1800, PCS-1900, DECT and UMTS
Author :
Nesimoglu, Tayfun
Author_Institution :
Middle East Tech. Univ., Guzelyurt, Turkey
Abstract :
The trade-off between efficiency and tunability has been revealed in frequency-tunable amplifiers. Several tunable amplifiers have been designed using various varactor diode topologies and their performances are compared. Simulation results demonstrate that the tunable amplifiers using anti-series distortion-free varactor stack (DFVS) topologies provide superior tunability and power added efficiency (PAE) than those using conventional varactor diode topologies. A tunable amplifier is designed that can tune from 1.74-to-2.36 GHz and provide 42% PAE. This range of tunability is sufficient to accommodate DCS-1800, PCS-1900, DECT and UMTS standards, and thus it may help to reduce the complexity of multimode and reconfigurable radios.
Keywords :
3G mobile communication; varactors; DCS 1800; DECT; PCS 1900; UMTS; distortion free varactor stack topology; frequency 1.74 GHz to 2.36 GHz; frequency tunable amplifier; power added efficiency; Impedance matching; Insertion loss; Load modeling; Microwave filters; Network topology; Topology; Varactors; Tunable amplifier; reconfigurable radio; software defined radio (SDR); tunable RF components;
Conference_Titel :
Microwave Symposium (MMS), 2010 Mediterranean
Conference_Location :
Guzelyurt
Print_ISBN :
978-1-4244-7241-3
DOI :
10.1109/MMW.2010.5605171
