Title :
A 20-50 GHz reconfigurable matching network for power amplifier applications
Author :
Vähä-Heikkilä, T. ; Rebeiz, G.M.
Author_Institution :
Michigan Univ., Ann Arbor, MI, USA
Abstract :
A reconfigurable matching network has been developed and it is based on loaded line techniques. It consists of 8 switched MEMS capacitors producing 256 (28) different impedances and is only 1×2.5 mm in size on a glass substrate. The network is ideally suited to match power amplifiers with 10-20 Ω output impedance to 50-60 Ω systems at 20-50 GHz. The estimated loss of the network is only 1-1.5 dB at 40 GHz while matching a 10-20 Ω load to a 50 Ω load. The reconfigurable network can also be used as an impedance tuner in noise parameter and load-pull measurements of active devices at 30-65 GHz.
Keywords :
impedance matching; micromechanical devices; noise; power amplifiers; 1 to 1.5 dB; 10 to 20 ohm; 2.5 mm; 20 to 65 GHz; 50 to 60 ohm; MEMS capacitors; SiO2; active devices; glass substrate; impedance tuner; load pull measurements; microelectromechanical system; noise parameter; power amplifier; reconfigurable matching network; Active noise reduction; Capacitors; Frequency; Impedance; MMICs; Micromechanical devices; Microswitches; Power amplifiers; Radiofrequency microelectromechanical systems; Tuners;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1339059
