Title :
A 90 GHz Hybrid Switching Pulsed-Transmitter for Medical Imaging
Author :
Arbabian, Amin ; Callender, Steven ; Kang, Shinwon ; Afshar, Bagher ; Chien, Jun-Chau ; Niknejad, Ali M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of California at Berkeley, Berkeley, CA, USA
Abstract :
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.
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; biomedical imaging; emitter-coupled logic; millimetre wave antennas; radio transmitters; slot antennas; switching circuits; voltage-controlled oscillators; BiCMOS process; PA driver; SiGe; antentronics; carrier pulsed transmitter; frequency 90 GHz; high speed ECL circuit; hybrid switching pulsed-transmitter; medical imaging; on-chip folded slot antenna; quadrature VCO; size 0.13 mum; ultra-short programmable pulse; Antennas; Biomedical imaging; Image resolution; Millimeter wave devices; Switches; Transmitters; Voltage-controlled oscillators; 90 GHz transmitter; Antentronics; folded slot dipole; high-resolution imaging; hybrid switching; medical imaging; millimeter-wave transmitter; on-chip antenna; pulsed transmitter; pulser; silicon-based imager; ultra-short pulse; wideband transmitter;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2010.2077150
