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A Miniaturized 70-GHz Broadband Amplifier in 0.13- \mu {\hbox {m}} CMOS Technology

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2 Author(s)
Jun-De Jin ; Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu ; Hsu, S.S.H.

A 70-GHz broadband amplifier is realized in a 0.13- mum CMOS technology. By using five cascaded common- source stages with the proposed asymmetric transformer peaking technique, the measured bandwidth and gain can reach 70.6 GHz and 10.3 dB under a power consumption (PDC) of 79.5 mW. Within the circuit bandwidth, the maximum input and output reflection coefficients are -6.1 and -10.8 dB, respectively. The group delay variation is plusmn 12.0 ps, and the output 1-dB compression point is 0.2 dBm at 5 GHz. With the miniaturized transformer design, the occupied core area of the circuit is only ~ 0.05 mm2 . This amplifier demonstrates a gain-bandwidth product of 231 GHz and a GBW/PDC up to 2.9 GHz/mW.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:56 ,  Issue: 12 )