Browsing by Author "Huang, Guo-wei"

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15 GHz Wideband CMOS Gilbert Up-Converter With Stacked Spiral-CPS Phase-Inverter Rat-Race Coupler at RF Port
(2013)
Hsiao, Yu-Chih
;
Meng, Chinchun
;
Wu, Po-Yi
;
Huang, Guo-wei
;
電機資訊學士班
A miniaturized phase-inverter rat-race and its wideband Gilbert up-converter is demonstrated in 0.13-mu m CMOS technology. The common-mode LO leakage can be absorbed by the isolated port of the rat-race coupler while the rate-race employed at RF port to combine the mixer differential output. A phase-inverter rat-race coupler with a stacked spiral-shape coplanar stripline (CPS) by multi-layer metals can highly reduce the chip size. Finally, the experimental results of up-converter shows the 1-dB conversion gain and 15 GHz RF bandwidth. The IF-to-RF isolation is about 50 dB and LO-to-RF isolation is about 23 dB, respectively.