Title :
Passive FET MMIC linearizers for C, X and Ku-band satellite-applications
Author :
Katz, A. ; Moochalla, S. ; Klatskin, J.
Author_Institution :
Trenton State Coll., NJ, USA
Abstract :
The design and measured performance of GaAs monolithic-microwave-integrated circuit (MMIC) linearizers for use with spaceborne traveling-wave-tube amplifiers (TWTAs) are presented. The linearizers operate at C-, X- and Ku-band and are believed the first to be realized in MMIC form. They are based on a passive FET design similar to that of MMIC switches and attenuators. MESFET varactors and voltage variable resistors are used as control elements. They provide more than 2.5 GHz of bandwidth at Ku-band with an improvement of greater than 10 dB in TWTA carrier-to-intermodulation ratio (C/I), and with a phase change of less than 5 degrees .<>
Keywords :
III-V semiconductors; MMIC; field effect integrated circuits; gallium arsenide; linearisation techniques; microwave amplifiers; satellite relay systems; travelling-wave-tubes; 2.5 GHz; C-band; GaAs; Ku-band; MESFET varactors; MMIC linearizers; SHF; X-band; monolithic-microwave-integrated circuit; passive FET design; satellite-applications; spaceborne TWT amplifier; traveling-wave-tube amplifiers; voltage variable resistors; Attenuators; Circuits; FETs; Field effect MMICs; Gallium arsenide; MESFETs; Resistors; Switches; Varactors; Voltage control;
Conference_Titel :
Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1993. Digest of Papers., IEEE 1993
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1322-4
DOI :
10.1109/MCS.1993.247455
