Title :
A 10-40 GHz 7 dB Directional Coupler in Digital CMOS Technology
Author :
Zhu, Yunliang ; Wu, Hui
Author_Institution :
Dept. of Electr. & Comput. Eng., Rochester Univ., NY
Abstract :
We present an integrated wideband directional coupler for millimeter-wave applications implemented in low-cost silicon technologies. It is constructed using broad-side coupled coplanar waveguides (CPW), taking advantage of available multiple metal layers in silicon technologies. A prototype coupler was designed and fabricated using a commercial 0.18mu digital CMOS technology with low-resistivity epi substrate. It achieves a 10-40 GHz frequency range (3-dB bandwidth) with 7 dB to 10 dB coupling and more than 10 dB directivity. Measurement results match well with electromagnetic simulation
Keywords :
CMOS digital integrated circuits; MIMIC; coplanar waveguides; millimetre wave directional couplers; 10 to 40 GHz; broadside coupled coplanar waveguides; digital CMOS technology; electromagnetic simulation; millimeter wave circuits; multiple metal layers; wideband directional coupler; Bandwidth; CMOS technology; Coplanar waveguides; Directional couplers; Electromagnetic waveguides; Frequency; Millimeter wave technology; Prototypes; Silicon; Wideband; CMOS; directional couplers; millimeter wave circuits; silicon; wideband;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249610
