Enhanced Tunable Light Absorption in Nanostructured Si Arrays Based on Double‐Quarter‐Wavelength Resonance
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Optical Materials"
DOI: 10.1002/adom.201900845
Abstract: Simultaneously tuning light absorption wavelength and absorbance is a critical challenge in photoelectric detection, mimic of photosynthesis, and simulation of photoreceptors in some animals' retinas. Here, highly ordered hexagonal nanostructured Si arrays are fabricated using… read more here.
Keywords: double quarter; light absorption; quarter wavelength; absorption ... See more keywords
Third‐order tunable filter with CFBW using two quarter‐wavelength resonators
Sign Up to like & getrecommendations! Published in 2021 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32883
Abstract: A tunable third‐order bandpass filter (BPF) with constant fractional bandwidth (CFBW) is presented. Only two quarter‐wavelength resonators have been used in comb‐line fashion to design the third‐order BPF. The physical dimensions of the resonators have… read more here.
Keywords: two quarter; filter; third order; wavelength resonators ... See more keywords
Horizontally polarized wideband antenna based on quarter-wavelength slot elements
Sign Up to like & getrecommendations! Published in 2019 at "AEU - International Journal of Electronics and Communications"
DOI: 10.1016/j.aeue.2018.11.024
Abstract: Abstract A horizontally polarized (HP) wideband antenna is designed and analyzed for wireless communication in this communication. The HP antenna is a combination of four quarter-wavelength slot elements, and fed by a wideband power divider… read more here.
Keywords: horizontally polarized; polarized wideband; quarter wavelength; slot ... See more keywords
Innovative origami-based solutions for enhanced quarter-wavelength resonators
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2018.07.029
Abstract: Abstract Sound absorption at low to moderate frequencies using quarter-wavelength resonators requires significant resonator's length (for instance 28 cm for 300 Hz), a condition very often uncompatible with a practical use of this kind of resonators for… read more here.
Keywords: quarter wavelength; absorption; wavelength resonators; resonator ... See more keywords
Miniature dual‐band bandpass filter using modified quarter‐wavelength SIRs with controllable passbands
Sign Up to like & getrecommendations! Published in 2019 at "Electronics Letters"
DOI: 10.1049/el.2018.6702
Abstract: A modified quarter-wavelength ( λ /4) stepped-impedance resonator (SIR) is proposed to design a miniature dual-band bandpass filter (BPF). The proposed λ /4 SIR has two individually controllable resonances for constructing dual passbands. Moreover, two… read more here.
Keywords: dual band; quarter wavelength; band bandpass; miniature dual ... See more keywords
Combined Triangle Quarter-Wavelength Patches and Their Application to High-Gain CP Antenna
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Antennas and Wireless Propagation Letters"
DOI: 10.1109/lawp.2019.2954583
Abstract: A modified triangle quarter-wavelength patch is proposed in this letter, and a compact circularly polarized (CP) antenna is designed by combining two of them. The evolution process of the combined modified triangle quarter-wavelength patches is… read more here.
Keywords: quarter wavelength; gain; triangle quarter; wavelength patches ... See more keywords
Compact Uniform Circular Quarter-Wavelength Monopole Antenna Arrays With Wideband Decoupling and Matching Networks
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2020.3016422
Abstract: Two novel decoupling and matching networks (DMNs) in microstrip technology for three-element uniform circular arrays (UCAs) are investigated and compared to a more conventional DMN approach with simple neutralization lines. The array elements are coaxially-fed… read more here.
Keywords: uniform circular; quarter wavelength; monopole; matching networks ... See more keywords
Investigation on acoustic energy harvesting based on quarter-wavelength resonator phononic crystals
Sign Up to like & getrecommendations! Published in 2018 at "Advances in Mechanical Engineering"
DOI: 10.1177/1687814017748077
Abstract: This article presents the development of an acoustic energy harvester using a quarter-wavelength resonator phononic crystals together with piezoelectric vibrators. The quarter-wavelength resonator phononic crystals consist of a main wave duct, several quarter-wavelength resonators, and… read more here.
Keywords: wavelength resonator; resonator phononic; phononic crystals; quarter ... See more keywords