Wideband nonuniform distributed power detector and compact directional coupler for millimeter-wave satellite communication

Abstract This work presents the design, implementation, and theoretical analysis of a wideband, high-sensitivity power detector, together with a compact, broadside-coupled directional coupler. The novel nonuniform distributed detector topology was implemented in a 130 nm $130\,\mathrm{nm}$ 130 n m silicon-germanium bipolar complementary metal-oxide-semiconductor technology, enabling monolithic integration of the proposed detector in satellite communication millimeter-wave front-end components. The detector achieves a higher voltage sensitivity in comparison to previously reported distributed detectors, from 45.12 kVW minus 1 $45.12\,\mathrm{kV\,W^{-1}}$ 45.12 k V W − 1 at 2.5 GHz $2.5\,\mathrm{GHz}$ 2.5 G H z to 10.51 kVW minus 1 $10.51\,\mathrm{kV\,W^{-1}}$ 10.51 k V W − 1 at 110 GHz $110\,\mathrm{GHz}$ 110 G H z , a wideband input matching below minus 10 dB $-10\,\mathrm{dB}$ − 10 d B