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This paper presents an integrated low-power K-band chem-bio-sensor implemented in a standard 0.25 μm SiGe BiCMOS technology including the sensing and read-out circuits. The sensor enables the detection of both permittivity and loss tangent of the material under test (MUT). The MUT is exposed on a resonator component in a sensing oscillator and the oscillator results in a permittivity dependent output...
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