Ultra-wideband microwave absorber based on uncharged graphene layers
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Electromagnetic Waves and Applications"
DOI: 10.1080/09205071.2018.1486234
Abstract: ABSTRACT In this paper, a novel method is presented to increase microwave absorbers bandwidth. The proposed method is based on coupling resonators which consist of a graphene layer at the top, a dielectric spacer and… read more here.
Keywords: absorber based; wideband microwave; graphene; based uncharged ... See more keywords
Wideband Microwave Frequency Division Based on an Optoelectronic Oscillator
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2019.2896062
Abstract: A novel wideband microwave frequency divider based on a single-loop optoelectronic oscillator (OEO) is proposed and demonstrated. The Mach-Zehnder modulator in the OEO is biased at the carrier suppression point to generate the ±1st order… read more here.
Keywords: wideband microwave; microwave frequency; frequency; input frequency ... See more keywords
Wideband Microwave Sensor for Downhole Water-Cut Monitoring
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3170650
Abstract: In the petroleum industry, downhole water-cut loggings are essential for reservoir management. Previously, most of them are based on permittivity measurements by low-frequency capacitance methods. However, they fail to work in aging oil fields with… read more here.
Keywords: downhole water; microwave sensor; water; water cut ... See more keywords
All-optical, ultra-wideband microwave I/Q mixer and image-reject frequency down-converter.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.001105
Abstract: An all-optical and ultra-wideband microwave in-phase/quadrature (I/Q) mixer, based on a dual-parallel Mach-Zehnder modulator and a wavelength division multiplexer, is proposed. Due to the simultaneous frequency down-conversion and 360-deg tunable phase shifting in the optical… read more here.
Keywords: image; frequency; wideband microwave; optical ultra ... See more keywords
Ultra-wideband microwave photonic filter with a high Q-factor using a semiconductor optical amplifier.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.001397
Abstract: An ultra-wideband microwave photonic filter (MPF) with a high quality (Q)-factor based on the birefringence effects in a semiconductor optical amplifier (SOA) is presented, and the theoretical fundamentals of the design are explained. The proposed… read more here.
Keywords: photonic filter; wideband microwave; microwave photonic; filter ... See more keywords
Wideband Microwave Photonic Circulator Using Two Asymmetric Partial-Height Triangle Ferrites
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15196689
Abstract: Broadband 5G communication requires the operation of nonreciprocal devices in the Ku band. A wideband photonic crystal circulator is implemented by introducing two partial-height triangular Ni-Zn ferrites into the Al2O3 ceramic rod-arrays. The asymmetric sizes… read more here.
Keywords: triangle; photonic circulator; microwave photonic; circulator ... See more keywords