Title :
94/47-GHz regenerative frequency divider MMIC with low conversion loss
Author :
Kudszus, Steffen ; Haydl, William H. ; Neumann, Markus ; Schlechtweg, Michael
Author_Institution :
Fraunhofer-Inst. fur Angewandte Festkorperphys., Freiburg, Germany
Abstract :
A coplanar regenerative frequency divider monolithic microwave integrated circuit (MMIC) based on 0.15-/spl mu/m pHEMTs on GaAs for 94/47-GHz frequency conversion has been developed, achieving a bandwidth of 23% for stable division. A very low conversion loss of 2.5 dB was obtained with an input level of -2 dBm and a dc power consumption of 8 mW, without using additional buffer amplifiers. The frequency of operation can be tuned by a varactor diode in the feedback network over a 2.5-GHz range to compensate for technology variations. Various methods for the simulation of stable and unstable operation and bandwidth and conversion performance are presented, using accurate modeling of the active and passive components.
Keywords :
HEMT integrated circuits; III-V semiconductors; MMIC frequency converters; circuit feedback; circuit tuning; coplanar waveguides; field effect MIMIC; frequency dividers; gallium arsenide; millimeter wave frequency converters; 0.15 micron; 2.5 dB; 8 mW; 94 GHz; GaAs; bandwidth; conversion loss; dc power consumption; feedback network; frequency divider MMIC; modeling; pHEMTs; regenerative frequency divider; varactor diode tuning; Bandwidth; Diodes; Energy consumption; Frequency conversion; Gallium arsenide; MMICs; Microwave integrated circuits; Monolithic integrated circuits; PHEMTs; Varactors;
Journal_Title :
Solid-State Circuits, IEEE Journal of
