Title :
Miniaturized three-dimensional MMIC K-band upconverter
Author :
Nishikawa, Kenjiro ; Toyoda, Ichihiko ; Tokumitsu, Tsuneo
Author_Institution :
NTT Wireless Syst. Labs., Yokosuka, Japan
fDate :
8/1/1997 12:00:00 AM
Abstract :
A miniaturized K-band balanced upconverter that effectively uses the three-dimensional monolithic microwave integrated circuit (MMIC) structure is presented in this paper. This upconverter consists of two unit mixers with stacked matching circuits and a newly developed Marchand balun. This balun is composed of two broad-side couplers and realizes a great reduction in circuit area. Each component´s area is less than 0.13 mm, resulting in a total area of only 0.55 mm2. This three-dimensional MMIC upconverter achieves conversion gains of greater than 1 dB and local oscillator (LO) leakage suppression rates of greater than 30 dB over the 17-18.5-GHz frequency band
Keywords :
MMIC frequency convertors; MMIC mixers; baluns; field effect MMIC; impedance matching; 17 to 18.5 GHz; MMIC K-band upconverter; Marchand balun; SHF; balanced upconverter; broad-side couplers; miniaturized 3D MMIC upconverter; mixers; stacked matching circuits; three-dimensional MMIC structure; Couplers; FETs; Impedance matching; K-band; Local oscillators; MMICs; Microwave integrated circuits; Mixers; Monolithic integrated circuits; Radio frequency;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
