Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Hoi‐wing Chan"'
Publikováno v:
IEEE Photonics Journal, Vol 15, Iss 3, Pp 1-8 (2023)
A new photonic-assisted instantaneous frequency measurement system is presented. It overcomes the latency problem in the reported structures based on the frequency-to-time mapping technique or the frequency-to-power mapping technique that involves a
Externí odkaz:
https://doaj.org/article/5e6fcfe1b83d4fd6abd34bc165bbcfaa
Autor:
Yu Zhang, Ruiqi Zheng, Erwin Hoi Wing Chan, Xudong Wang, Xinhuan Feng, Bai‐Ou Guan, Jianping Yao
Publikováno v:
Electronics Letters, Vol 58, Iss 16, Pp 627-629 (2022)
Abstract A microwave photonic frequency divider to produce a frequency‐divided microwave signal with its frequency that is one‐third the frequency of the input microwave signal is proposed and experimentally demonstrated. The key novelty of the a
Externí odkaz:
https://doaj.org/article/cdbb7acacfcc400ea4460b64b3122ab7
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 6, Pp 1-8 (2022)
This paper presents a photonics-based instantaneous microwave frequency measurement system. The system operates based on the frequency-to-power mapping technique. The trade-off between frequency measurement range and resolution, which is present in t
Externí odkaz:
https://doaj.org/article/d263ecfeeb2d4610898653666d33fa7e
Autor:
Chongjia Huang, Erwin Hoi Wing Chan
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 3, Pp 1-8 (2022)
This paper presents an angle-of-arrival (AOA) measurement system based on microwave photonic frequency down conversion. It has the novelty of no LO is needed for the frequency conversion process. Instead, a ramp waveform is used to shift the frequenc
Externí odkaz:
https://doaj.org/article/39b5f8f133554e579b33fc3bdfb88018
Publikováno v:
Humanities & Social Sciences Communications, Vol 8, Iss 1, Pp 1-10 (2021)
Abstract Since the start of the COVID-19 pandemic, pertinent conspiracy theories have proliferated online, raising the question: How might believing in those conspiracy theories be linked with engagement in disease-preventive behaviours? To answer th
Externí odkaz:
https://doaj.org/article/b7c49bd4dc2049238b13d8468e34ea5e
Publikováno v:
The Journal of Positive Psychology. :1-14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68216f8dd42d3175bbc85c464b7ab931
https://doi.org/10.1080/17439760.2023.2190923
https://doi.org/10.1080/17439760.2023.2190923
Autor:
Li Lin, Hoi-Wing Chan
Publikováno v:
Frontiers in Psychology, Vol 11 (2020)
Happiness can be pursued based on hedonic motives (i.e., seeking pleasure and comfort) and/or eudaimonic motives (i.e., seeking to develop and make the best use of the self). Substantial studies have found that hedonic and eudaimonic motives relate t
Externí odkaz:
https://doaj.org/article/a951485e2766480fb45b238be9e8d4f7
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 2, Pp 1-12 (2019)
A novel approach for realizing a microwave photonic image rejection mixer is presented in this paper. It is based on using a widely tunable narrow-band optical notch filter implemented by stimulated Brillouin scattering (SBS) to remove the image sign
Externí odkaz:
https://doaj.org/article/acb279c4ad0144e899b3e75498123132
Autor:
Hao Chen, Erwin Hoi Wing Chan
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 1, Pp 1-10 (2019)
A new technique for determining the angle of arrival (AoA) of an RF signal is presented. It is based on a cascaded modulator structure, where continuous wave light from an optical source is modulated by an incoming RF signal twice. The AoA of an RF s
Externí odkaz:
https://doaj.org/article/4a5c8a72d0f44e50ba4ad7b244475db8
Publikováno v:
IEEE Photonics Journal, Vol 10, Iss 1, Pp 1-12 (2018)
A new dual-function photonic microwave signal processing structure that has the ability to realize both frequency up/down conversion and RF/IF phase shifting, is presented. In the proposed signal processor, a dual-polarization dual-parallel Mach Zehn
Externí odkaz:
https://doaj.org/article/ccbc1282252d4ec68e272695c658e703