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100 GHz transformer-coupled quadrature oscillator

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3 Author(s)
Lin, K.-T. ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Chen, H.-K. ; Lu, S.-S.

A 96.4-100.8 GHz quadrature oscillator utilising transformer-coupled and magnetic tuning techniques has been implemented in 90 nm CMOS technology. Under 1 V supply operation, experimental results show that the phase and amplitude error between I and Q paths are smaller than 1.6- and 0.9 dB with power dissipation from 8.7 to 21 mW. The measured phase noise is -110.4 dBc/Hz at 10 MHz-offset away from the downconverted 98.6 GHz carrier. This oscillator occupies a chip area of 0.357 mm2.

Published in:

Electronics Letters  (Volume:49 ,  Issue: 4 )