Open AccessTowards multipixel THz Schottky diode detector with a single RF output line
Author(s) -
Anatoliy Prikhodko,
Ivan Belikov,
D. I. Mikhailov,
Alexander Shurakov,
Gregory Goltsman
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2086/1/012063
Subject(s) - terahertz radiation , schottky diode , optics , optoelectronics , detector , antenna (radio) , directivity , microwave , diode , resonator , waveguide , physics , materials science , electrical engineering , engineering , quantum mechanics
We propose the design of a dual-pixel array of Schottky diodes. Each diode is fixed between the bow-tie antenna arms on top of a SI-GaAs membrane acting as a waveguide backshort for efficient coupling of the antenna to the feedline of high-directivity horn. The detector utilizes a single RF output line: microwave reflectometer is used for the readout. The pixels are equipped with dual-mode resonator filters to eliminate the cross-talk. We evaluate the design proposed via numerical simulation and performance tests of the array subunits: NEP of 300 pW/Hz 0.5 and dynamic range of 24 dB are demonstrated at 137.5 GHz.