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The design and performance analysis are presented for a passive uncooled radiometer pixel suitable for integration in 28nm CMOS technology. In the configuration a single wideband antenna, operating from 200 GHz to 600 GHz, is connected to a pn-junction diode. Including the antenna-detector impedance mismatch, the detector shows an average NEP of 2.71 pW/√Hz such that, together with the antenna, the...
In this paper we present a high sensitivity total power radiometer front-end integrated in a 0.25 µm SiGe BiCMOS technology. The radiometer consists of a two-stage LNA co-integrated with a common-emitter square-law detector. Together these stages provide a peak responsivity of 61 MV/W and a 6 GHz system bandwidth around 56 GHz. An optimized non-50-Ohm impedance interface between the LNA and the detector...
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