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A 90 GHz Hybrid Switching Pulsed-Transmitter for Medical Imaging

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6 Author(s)
Arbabian, A. ; Dept. of Electr. Eng. & Comput. Sci., Univ. of California at Berkeley, Berkeley, CA, USA ; Callender, S. ; Shinwon Kang ; Afshar, B.
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This paper reports a fully integrated 90 GHz-carrier pulsed transmitter in 0.13 μm SiGe BiCMOS process for imaging applications. To obtain ultra-short programmable pulses, the transmitter employs a number of novel techniques including hybrid switching and Antentronics. The transmit path includes a quadrature VCO, PA driver, PA and the on-chip folded slot antenna. High speed ECL circuits generate and provide the short pulses in several operating modes. The transmitter achieves a record pulsewidth of 26 ps in the hybrid mode and 33 ps in the independent mode. This translates to >30 GHz of RF BW in the transmitter.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:45 ,  Issue: 12 )