Effect of Yagi–Uda nano-antenna element shape on the directivity and radiation efficiency
Sign Up to like & getrecommendations! Published in 2019 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-019-1774-3
Abstract: In this paper, different optimal designs of Yagi–Uda nano-antennas (NAs) are introduced and analyzed based on different element shapes to maximize the directivity and radiation efficiency. The studied element shapes include triangular, hexagonal, cube, square,… read more here.
Keywords: radiation efficiency; yagi uda; directivity radiation; directivity ... See more keywords
Fuel interchangeability for lean premixed combustion in cylindrical radiant burner operated in the internal combustion mode
Sign Up to like & getrecommendations! Published in 2020 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2020.115997
Abstract: Abstract The trend towards a transition from fossil to renewable energy makes urgent the development of fuel-flexible burners that provides interchangeability between natural gas and a wide range of renewable gases. This study examines the… read more here.
Keywords: radiation efficiency; burner; mode; radiant ... See more keywords
Optically transparent sea‐water monopole antenna with high radiation efficiency for WLAN applications
Sign Up to like & getrecommendations! Published in 2019 at "Electronics Letters"
DOI: 10.1049/el.2019.2664
Abstract: A high efficiency and transparent sea-water monopole antenna operating at 2.4 GHz for wireless local area network (WLAN) applications is proposed in this Letter. The antenna has high transparency (>85%) achieved by using sea-water as… read more here.
Keywords: efficiency; wlan applications; sea water; radiation efficiency ... See more keywords
Efficient sound radiation using a bandgap structure
Sign Up to like & getrecommendations! Published in 2019 at "Applied Physics Letters"
DOI: 10.1063/1.5110296
Abstract: This work reports on the use of bandgaps to increase the efficiency of sound radiation employing defect modes on a phononic crystal (PnC). A PnC consisting of a 2D array of studs on an aluminum… read more here.
Keywords: sound radiation; pnc; defect modes; efficiency ... See more keywords
Electromagnetic Radiation Efficiency of Body-Implanted Devices
Sign Up to like & getrecommendations! Published in 2018 at "Physical review applied"
DOI: 10.1103/physrevapplied.9.024033
Abstract: Autonomous wireless body-implanted devices for biotelemetry, telemedicine, and neural interfacing constitute an emerging technology providing powerful capabilities for medicine and clinical research. We study the through-tissue electromagnetic propagation mechanisms, derive the optimal frequency range, and… read more here.
Keywords: frequency; efficiency; radiation efficiency; body implanted ... See more keywords
A Curved Microstrip Patch Antenna Designed From Transparent Conductive Films
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2022.3233471
Abstract: Transparent microstrip patch antennas suffer from low radiation efficiency and gain when manufactured using transparent conductive films (TCFs), mainly at low frequency (starting from the microwave S band). To address this problem, we propose a… read more here.
Keywords: radiation efficiency; patch antenna; microstrip patch; antenna ... See more keywords
Radiation Efficiency Improvement of a Balanced Miniature IFA-Inspired Circular Antenna
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"
DOI: 10.1109/lawp.2016.2633308
Abstract: The radiation efficiency improvement of an electrically small antenna is presented. We consider a balanced miniature inverted-F-antenna-inspired circular antenna whose radius is ${{\mathbf \lambda }}/28$ at 433 MHz and radiation efficiency is 30%. By modifying the… read more here.
Keywords: efficiency; radiation efficiency; efficiency improvement; antenna ... See more keywords
Radiation Efficiency Enhancement of Graphene THz Antennas Utilizing Metamaterial Substrates
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"
DOI: 10.1109/lawp.2017.2695521
Abstract: The radiation efficiency improvement of graphene plasmonic antennas via synthesized substrates with metamaterial resonators is introduced in this letter. Graphene, represented as an ultrathin layer, can support highly confined surface waves of significantly decreased wavelength… read more here.
Keywords: efficiency enhancement; thz antennas; graphene; efficiency ... See more keywords
Fundamental Efficiency Limits for Small Metallic Antennas
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2017.2670532
Abstract: Both the radiation efficiency and bandwidth of electrically small antennas are dramatically reduced as the size decreases. Fundamental limitations on the bandwidth of small antennas have been thoroughly treated in the past. However, upper bounds… read more here.
Keywords: size; small antennas; maximum radiation; efficiency ... See more keywords
Erratum to “Fundamental Limitations for Antenna Radiation Efficiency” [Aug 18 3894-3901]
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2019.2925274
Abstract: Recently, a fundamental limit for antenna radiation efficiency was proposed in [1] . Although valid for most antenna applications, a clarification is needed with regard to the fundamental limit expressed by [1 eqs. (14) and… read more here.
Keywords: radiation efficiency; fundamental limitations; antenna radiation; erratum fundamental ... See more keywords
Low-RCS and Wideband Reflectarray Antenna With High Radiation Efficiency
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2020.3044660
Abstract: This communication presents a wideband high-efficiency reflectarray antenna with a low radar cross section (RCS) based on metal pillars inserted absorptive frequency-selective reflector (AFSR). The AFSR is realized by the bent resistor-embedded metal strip, whose… read more here.
Keywords: rcs; efficiency; radiation efficiency; reflectarray antenna ... See more keywords