Results 71 to 80 of about 837,318 (252)
IEEE Journal of MicrowavesThe inhomogeneous half-mode T-septum waveguide (IHMTSG) cavity is analyzed and applied to the design of miniaturized single- and dual-band band-pass filters (BPFs) in this paper.
Zi-Qi Zhang, Liang Zhou
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A Dual Band Branch Line Coupler With Wide Frequency Ratio
IEEE Access, 2019 A dual-band quadrature branch line coupler (BLC) with wide frequency ratio has been proposed in this paper. A dual-band quarter wave (λ/4) transmission line structure with wide frequency ratio operation has also been presented here with closed ...
Aijaz M. Zaidi +4 more
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Dual-band, double-negative, polarization-independent metamaterial for the visible spectrum
, 2012 We present the first dual-band negative index metamaterial that operates in the visible spectrum. The optimized four-functional-layer metamaterial structure exhibits the first double-negative (i.e., simultaneously negative permittivity and permeability ...
Aslam, Muhammad I., Güney, Durdu Ö.
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Simulations of dual morphology in spiral galaxies [PDF]
, 2002 Gas and stars in spiral galaxies are modelled with the DUAL code, using hydrodynamic and N-body techniques. The simulations reveal morphological differences mirroring the dual morphologies seen in B and K' band observations of many spiral galaxies.
Berman, S. L.
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Dual-Band and Dual-Polarized Antenna System Design for Ka-Band Applications
2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI)This study presents a dual-band dual-circular polarization feed chain for Ka-band applications such as satellite communication systems. The proposed feed chain consists of a Tx-Rx corrugated antenna, iris polarizer, rectangular-to-square transition, and square-to- circular transition.
Guvenc, Merve +2 more
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A Dual-Band Approach for Backscattering Modulation
2024 IEEE International Conference on RFID Technology and Applications (RFID-TA)In typical passive UHF RFID systems, tags rely on backscattering, where they modulate a reflected signal by switching impedance states, powered solely by the reader's RF signal. In contrast, active RFID tags offer enhanced communication capabilities but require an internal power source.
Sennesael, Joryan +3 more
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A Four-Port Dual-Band Dual-Polarized Antenna for Ku-Band Satellite Communications
Applied SciencesThis paper presents the development of a four-port dual-band dual-polarized antenna for transmitting/receiving (Tx/Rx) applications in Ku-band satellite communications.
Son Trinh-Van +3 more
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Multi-frequency fine resolution imaging radar instrumentation and data acquisition [PDF]
Development of a dual polarized L-band radar imaging system to be used in conjunction with the present dual polarized X-band radar is described. The technique used called for heterodyning the transmitted frequency from X-band to L-band and again ...
Champagne, E. B. +5 more
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Composite metamaterials with dual-band magnetic resonances in the terahertz frequency regime
, 2009 Composite metamaterials(CMMs) combining a subwavelength metallic hole array (i.e. one-layer fishnet structure) and an array of split-ring resonators(SRRs) on the same board are fabricated with gold films on silicon wafer. Transmission measurements of the
Jinxin Fu +9 more
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Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsA novel FSS-Backed reflectarray unit cell is introduced to design a dual-band X/Ku Reflectarray Antenna (RA). A Ku-band RA based on this FSS-Backed cell element is designed and located on the top of a conventional X-band RA.
Iman Derafshi +3 more
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