Title :
A broadband and miniaturized V-band PHEMT frequency doubler
Author :
Piernas, B. ; Hayashi, H. ; Nishikawa, K. ; Kamogawa, K. ; Nakagawa, T.
Author_Institution :
NTT Network Innovation Labs., Kanagawa, Japan
fDate :
7/1/2000 12:00:00 AM
Abstract :
We present the design and measured performances of a V-band frequency doubler fabricated using 0.15 μm GaAs pseudomorphic HEMTs and the three-dimensional (3-D) MMIC technology. Thank to the use of an improved 180/spl deg/ rat-race hybrid, the frequency doubler exhibits high spectral purity over a large bandwidth. Isolation better than 30 dB is achieved on a frequency range from 31.736 GHz and fundamental frequency rejection better than 35 dB is achieved between 31.5 GHz and 37.5 GHz. Conversion loss measured at 32.5 GHz is 8.5 dB for an input power of 14 dBm. Both the broadband spectral purity and the small size of 1 mm2 make it suitable for the realization of high-quality and widely tunable V-band frequency sources. For the future developments of millimeter-wave wireless communication systems, it offers good perspectives toward the fabrication of single-chip V-band transceiver including the frequency source.
Keywords :
HEMT integrated circuits; III-V semiconductors; MMIC frequency convertors; field effect MIMIC; frequency multipliers; gallium arsenide; integrated circuit design; millimetre wave frequency convertors; 0.15 micron; 31.7 to 37.5 GHz; 3D MMIC technology; 8.5 dB; EHF; GaAs; GaAs pseudomorphic HEMTs; MM-wave wireless communication systems; PHEMT frequency doubler; broadband PHEMT frequency doubler; high spectral purity; miniaturized V-band frequency doubler; rat-race hybrid; single-chip V-band transceiver; tunable V-band frequency sources; Bandwidth; Frequency measurement; Gallium arsenide; Isolation technology; Loss measurement; MMICs; Millimeter wave communication; PHEMTs; Performance evaluation; Power measurement;
Journal_Title :
Microwave and Guided Wave Letters, IEEE