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Ito, H; Ishibashi, T
Electronics letters, 08/2019, Letnik: 55, Številka: 16Journal Article
A zero-biased Fermi-level managed barrier diode that was packaged with a WR-3 rectangular-waveguide-input port was developed. For direct (square-law) detection operations, the fabricated module exhibited a 3 dB bandwidth covering the whole WR-3 band. The intermediate frequency bandwidth in heterodyne detection was, therefore, dominated by the bandwidth of the integrated preamplifier, and it was measured to be about 40 GHz. The minimum noise-equivalent power obtained was as low as 7 × 10−18 W/Hz at around 300 GHz even with a very low local oscillator power of 30 μW.
