Zobrazeno 1 - 10
of 19
pro vyhledávání: '"M. Mahdi Assefzadeh"'
Autor:
Aydin Babakhani, M. Mahdi Assefzadeh
Publikováno v:
IEEE Journal of Solid-State Circuits. 52:2905-2919
Broadband 0.03–1.1 THz signal generation and radiation are demonstrated based on an oscillator-free direct digital-to-impulse architecture with a 1.9-ps full width at half maximum and 130-GHz 3-dB bandwidth (BW) (200-GHz 10-dB BW) centered at 160 G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5770db60e17d519e551790c39217859a
https://doi.org/10.1109/jssc.2017.2739180
https://doi.org/10.1109/jssc.2017.2739180
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 7:599-608
A direct time-domain characterization of silicon-based integrated picosecond impulse radiators using a femtosecond laser-gated optoelectronic sampling technique is developed. In the proposed system, a 1550 nm femtosecond laser source is used to gener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c6923ec0bb39be6aeffc0143e39ab6c
https://doi.org/10.1109/tthz.2017.2726346
https://doi.org/10.1109/tthz.2017.2726346
Publikováno v:
RWS
In this work, a long-path Terahertz (THz) communication channel is characterized between 0.32-1.1 THz using a custom-designed silicon-based THz pulse radiator chip. Our chip generates and radiates 1.9 ps pulses with an on-chip antenna at a repetition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c37be08a0f10367b819f779f8b2256a
https://doi.org/10.1109/rws45077.2020.9050123
https://doi.org/10.1109/rws45077.2020.9050123
Publikováno v:
2019 IEEE MTT-S International Microwave Symposium (IMS).
In this paper, a custom picosecond pulse radiator is used to demonstrate the micro-Doppler phenomenon in the Terahertz (THz) regime. In the micro-Doppler effect, the periodic movement of radar targets modulates the frequency of the electromagnetic wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05bd73a2ad67a2ce184fbaf331bce705
https://doi.org/10.1109/mwsym.2019.8700953
https://doi.org/10.1109/mwsym.2019.8700953
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 64:4685-4700
This paper presents a nonlinear Q-switching impedance (NLQSI) technique for picosecond pulse radiation in silicon. A prototype chip is designed with four NLQSI-based impulse generation channels, which can produce picosecond pulses with a reconfigurab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8b19b3d667399803d5f48b91c832faf
https://doi.org/10.1109/tmtt.2016.2623700
https://doi.org/10.1109/tmtt.2016.2623700
Publikováno v:
IEEE Microwave Magazine. 17:24-38
The technology for generating and detecting electromagnetic waves has evolved significantly over the last 120 years. In the early 1890s, Guglielmo Marconi used a spark-gap transmitter to build a wireless telegraphy system. In his design, he charged a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::631a9f249a36d76e22c5f0c74aaff61b
https://doi.org/10.1109/mmm.2016.2608764
https://doi.org/10.1109/mmm.2016.2608764
Publikováno v:
Scopus-Elsevier
In this work, we introduce a spectroscopy system based on an electronic source that can radiate terahertz frequency combs to perform broadband spectroscopy of trace gases. A single-chip source provides us with a highly compact and cost-effective syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3b002ec8fb9bf6a6aa5959306825ba5
https://doi.org/10.2118/192899-ms
https://doi.org/10.2118/192899-ms
Autor:
Aydin Babakhani, M. Mahdi Assefzadeh
Publikováno v:
2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
Laser-free 0.03–1.1 THz signal generation and radiation in silicon is presented based on an oscillator-free direct digital-to-impulse architecture that is capable of generating and radiating pulses with a FWHM of 1.9 ps and a 3dB-BW of 130 GHz cent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d804b87ac62dd120335bda34604d8f06
https://doi.org/10.1109/irmmw-thz.2017.8067089
https://doi.org/10.1109/irmmw-thz.2017.8067089
Autor:
Aydin Babakhani, M. Mahdi Assefzadeh
Publikováno v:
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
A fully-integrated broadband 0.03–1.032THz radiating array is presented. Coherent spatial combining from 8 elements is successfully demonstrated. The combined signal achieves a jitter of 270fsec, a record pulse-width of 5.4psec, and an impulse peak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a26a7cc2ad455251f90b71b7df452b2
https://doi.org/10.1109/irmmw-thz.2016.7758350
https://doi.org/10.1109/irmmw-thz.2016.7758350
Autor:
Aydin Babakhani, M. Mahdi Assefzadeh
Publikováno v:
2016 IEEE Symposium on VLSI Technology.
This paper presents a broadband THz frequency-comb spectroscopic imager based on a fully-integrated 4×2 picosecond Direct Digital-to-Impulse (D2I) radiating array. By employing a novel trigger-based beamforming architecture, the chip performs cohere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b1b0607f6847a3bd262e38c82ae20ff
https://doi.org/10.1109/vlsit.2016.7573401
https://doi.org/10.1109/vlsit.2016.7573401