Terahertz-wave radars based on resonant-tunneling-diode oscillators

Adrian Dobroiu; Safumi Suzuki; Masahiro Asada

doi:10.1117/12.2526709

6 September 2019 Terahertz-wave radars based on resonant-tunneling-diode oscillators

Adrian Dobroiu, Safumi Suzuki, Masahiro Asada

Proceedings Volume 11124, Terahertz Emitters, Receivers, and Applications X; 111240U (2019) https://doi.org/10.1117/12.2526709
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

Several terahertz-wave radar techniques based on a resonant-tunneling-diode (RTD) oscillator are under investigation. First, an amplitude-modulated continuous-wave (AMCW) radar able to measure the absolute distance was achieved by demodulating the wave returning from the target and measuring its phase, either by determining the time delay with an oscilloscope, or by using an IQ demodulator to determine the sine and cosine of the phase. Our current record with this type of radar is a ranging error of 0.063 mm; however, it can only measure the distance up to a single reflecting surface. Second, a subcarrier frequency-modulated continuous-wave (FMCW) radar has been demonstrated to work and is expected to allow the simultaneous ranging of several targets. The ranging error for this radar was found to be 0.73 mm. Additionally, a radar technique based on the swept source optical coherence tomography (SS-OCT) principle is proposed. Terahertz-wave 2D imaging can be combined with these radar techniques to obtain a 3D imaging system.

Conference Presentation

Citation Download Citation

Adrian Dobroiu, Safumi Suzuki, and Masahiro Asada "Terahertz-wave radars based on resonant-tunneling-diode oscillators", Proc. SPIE 11124, Terahertz Emitters, Receivers, and Applications X, 111240U (6 September 2019); https://doi.org/10.1117/12.2526709

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available