A.A. Oleynik – Dr.Sc.(Eng.), Professor, 

Department «Electronic devices and systems engineering», Yuri Gagarin State Technical University of Saratov E-mail: anatoly.semenovich@gmail.com

A.A. Potapov – Undergraduate, 

Department «Electronic devices and systems engineering», Yuri Gagarin State Technical University of Saratov E-mail: potapov_andrey13@mail.ru

In this paper, the film structure of the metal – dielectric – thermosensitive layer was studied. In this structure, the layers of metal (chromium) serves as an absorber of millimeter radiation. A ~ 10 nm thick chromium layer absorbs at least 50% of the incident millimeter radiation. To ensure a small constant receiver time, the thickness of the mica substrate is 40 µm. The heat-sensitive layer made of VOx when heated in the temperature range of 22…69°C by 1.5 orders of magnitude changes its resistance. Thus, the time constant of the receiver is 6.85×10−6 s. Designed highly sensitive receiver provides registration of continuous and pulsed millimeter radiation. In the absorbing layer of the receiver from chromium at the level of 0.5, the width of the resonance absorption bands is 16.5 and 16.3 GHz in the frequency bands 100…116.5 GHz and 206.7…223 GHz respectively. The receiver is made in a standard hermetic metal-to-glass package with small volume-weight characteristics (receiver weight is not more than 2 grams). The metal – dielectric – temperature sensitive film structure has a fourth stiffness group, so the receiver can be used in aerospace, for recording thermal radiation from various macroscopic objects, in alarm systems and biomedical applications. The receiving area of the multielement receiver in its configuration corresponds to a rectangular waveguide (the output of millimeter radiation sources) of klystrons, magnetrons, TWT and BWT. Thus, the specified receiver can be used to study the spatial-energy characteristics of radiation sources.

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