Bandwidth enhancement of a miniaturized reflectarray antenna using sub‐wavelength meander‐line cells
Sign Up to like & getrecommendations! Published in 2017 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.30581
Abstract: We propose a new way to enlarge gain bandwidth of a miniaturized reflectarray antenna (MRA), a new type of reflectarray antenna (RA) with significantly reduced volume. To extend the gain bandwidth, we have used meander-line… read more here.
Keywords: gain; reflectarray antenna; gain bandwidth; miniaturized reflectarray ... See more keywords
Enhanced gain bandwidth of Tm3+ and Er3+ doped tellurite glasses for broadband optical amplifier
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Non-Crystalline Solids"
DOI: 10.1016/j.jnoncrysol.2019.119501
Abstract: Abstract In this work, (90-x-y)TeO2-10GeO2-(x)Tm2O3-(y)Er2O3 composition of germano-tellurite glasses were synthesized by traditional melting and quenching technique and the spectroscopic properties of synthesized glasses were investigated. The values of Judd-Ofelt (JO) intensity parameters (Ωt(t = 2, 4, 6)), spontaneous… read more here.
Keywords: broadband optical; gain bandwidth; tellurite glasses; optical amplifier ... See more keywords
A simple method to simultaneously increase the gain and bandwidth of wearable antennas for application in medical/communications systems
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Microwave and Wireless Technologies"
DOI: 10.1017/s1759078720001075
Abstract: Abstract In this paper, a simple and efficient method to increase the gain and bandwidth of the wearable antennas used in several medical/communications systems is presented. To increase the gain and bandwidth simultaneously, the triple… read more here.
Keywords: increase gain; gain bandwidth; gain; bandwidth wearable ... See more keywords
Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency
Sign Up to like & getrecommendations! Published in 2017 at "AIP Advances"
DOI: 10.1063/1.4984274
Abstract: This paper presents the design of a planar low-profile, wide-gain-bandwidth metasurface antenna at terahertz frequency. The proposed antenna consists of a metasurface and a planar feeding structure, both of which are patterned on an electrically… read more here.
Keywords: wide gain; gain; antenna; bandwidth metasurface ... See more keywords
An amorphous silicon photodiode with 2 THz gain-bandwidth product based on cycling excitation process
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.5001170
Abstract: Since impact ionization was observed in semiconductors over half a century ago, avalanche photodiodes (APDs) using impact ionization in a fashion of chain reaction have been the most sensitive semiconductor photodetectors. However, APDs have relatively… read more here.
Keywords: cycling excitation; bandwidth product; excitation; excitation process ... See more keywords
Alternatives to Metamaterial Based Antennas for Gain and Bandwidth Enhancement
Sign Up to like & getrecommendations! Published in 2021 at "Iete Journal of Research"
DOI: 10.1080/03772063.2021.1886878
Abstract: Several metamaterial antenna configurations have been proposed in the literature for gain and bandwidth enhancement. However, these antennas are rarely used in commercial applications due to comple... read more here.
Keywords: alternatives metamaterial; metamaterial based; bandwidth enhancement; based antennas ... See more keywords
Single-frequency fibre laser at 1030 nm based on gain bandwidth compression
Sign Up to like & getrecommendations! Published in 2019 at "Laser Physics Letters"
DOI: 10.1088/1612-202x/ab174d
Abstract: We demonstrate a single-frequency linear cavity fiber laser at 1030 nm with a distributed Bragg reflector cavity configuration. Despite the fact that the combination of the cavity length of the fiber laser and the reflection… read more here.
Keywords: single frequency; laser 1030; laser; gain bandwidth ... See more keywords
Four-Arm Sinuous Antenna With Low Input Impedance for Wide Gain Bandwidth
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3163821
Abstract: An improved method of reducing the input impedance of a four-arm sinuous antenna is demonstrated for a wide gain bandwidth. The proposed antenna has a dual-linear polarized response for electronic support measures (ESM) systems and… read more here.
Keywords: four arm; input impedance; impedance; gain bandwidth ... See more keywords
Achieving a Large Gain-Bandwidth Product From a Compact Antenna
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2017.2700016
Abstract: This paper presents a method to achieve high gain (>20 dBi) and wide bandwidth (>55%) from a compact antenna that is less than one wavelength tall and only $2.6\lambda _{0}$ in diameter at the lowest… read more here.
Keywords: gain; bandwidth product; tex math; gain bandwidth ... See more keywords
Real-time and rapid measurement of the loop gain and bandwidth of phase-locked loop for mode-locked laser
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.1.014105
Abstract: Abstract. We propose a simple scheme to perform real-time and rapid measurements of the loop gain and bandwidth of a phase-locked loop (PLL) for mode-locked lasers. By implementing the proposed scheme, the loop gain and… read more here.
Keywords: real time; loop gain; gain bandwidth;
Addressing gain-bandwidth trade-off by a monolithically integrated photovoltaic transistor
Sign Up to like & getrecommendations! Published in 2022 at "Science Advances"
DOI: 10.1126/sciadv.abq0187
Abstract: The gain-bandwidth trade-off limits the development of high-performance photodetectors; i.e., the mutual restraint between the response speed and gain has intrinsically limited performance optimization of photomultiplication phototransistors and photodiodes. Here, we show that a monolithically… read more here.
Keywords: integrated photovoltaic; transistor; monolithically integrated; gain ... See more keywords