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A low power 278-GHz CMOS zero-IF heterodyne receiver is presented in this paper. The circuit includes a passive mixer, a baseband amplifier, a 278-GHz triple push sub-harmonic injection locked oscillator and an integrated antenna. The receiver measured maximum conversion gain is −12 dB and the DC power consumption is 47 mW. The on-chip antenna size is 390×280 μm2. The heterodyne receiver is used as...
A THz 31×31 pixel, 100 fps image sensor integrated in a 130 nm CMOS process is presented. Taking advantage of the possibility to modulate the active source that lights the scene, a significant improvement in sensitivity and NEP is achieved by shifting the modulated THz radiation, by means of an antenna/MOSFET, then filtering the signal band using an in-pixel 16-paths passive SC-filter combined with...
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