Results 51 to 60 of about 221,941 (298)
Design of microstrip patch antenna for IEEE 802.16-2004 applications [PDF]
, 2011 This thesis presents microstrip patch antenna IEEE 802.16-2004 standards for microwave applications and WiMax. Narrow bandwidth (BW) is the main defect of microstrip patch antenna in wireless communication.
Al-Rawachy, Ehab Esam Dawood
core
AC-coupled GaAs microstrip detectors with a new type of integrated bias resistors [PDF]
, 1997 Full size single-sided GaAs microstrip detectors with integrated coupling capacitors and bias resistors have been fabricated on 3'' substrate wafers. PECVD deposited SiO_2 and SiO_2/Si_3N_4 layers were used to provide coupling capacitaces of 32.5 pF/cm ...
A Söldner-Rembold +33 more
core +4 more sources
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Precise regulation of preoxidation time and carbonization temperature in biomass napkin‐derived hard carbon generates abundant closed pores and ultramicropores, significantly enhancing the capacity in the low‐potential plateau region (the high plateau capacity of 266 mAh g−1) and thereby achieving highly reversible sodium‐ion storage (395 mAh g−1 at 30
Haoran Wang +4 more
wiley +1 more source
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021 The design and characterization of single and multi-layered miniaturized microstrip antennas resonating at 2.4 GHz are proposed. The miniaturization is accomplished by fractal Defected Ground Structure (DGS).
Amiya Bhusana Sahoo +2 more
doaj +1 more source
An ohmic RF MEMS switch for reconfigurable microstrip array antennas built on PCB [PDF]
, 2008 This paper presents the analysis, design and simulation of an ohmic RF MEMS switch specified for reconfigurable microstrip array antennas built on PCB via an integrated monolithic technology.
Charalampidis, N +6 more
core
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.The structure, properties, preparation methods, and characterization techniques of BP. As a typical 2D layered material, black phosphorus (BP) demonstrates exceptional promise in various fields, particularly in energy storage for alkali metal‐ion batteries. However, its distinctive structure and properties, together with the compositional complexity of
Yunqing Wang +7 more
wiley +1 more source
Design of Dual-band Branch-Line Coupler Based on Shunt Open-Circuit DCRLH Cells [PDF]
, 2013 In this article, the shunt open-circuit dual composite right/left-handed (DCRLH) cell is initially proposed and one dual-band branch-line coupler based on the proposed cells is designed.
Bo Tian, Guang-Ming Wang, Ke Lu
core
Microstrip to parallel strip balun as spiral antenna feed [PDF]
, 2012 This paper presents the design and implementation of a microstrip to parallel strip balun which are frequently used as balanced antennas feed. This wideband balun transition is composed of a parallel strip which is connected to the spiral antenna and a ...
Coetzee, Jacob +2 more
core +2 more sources
Large‐Area Metallic Nanohelices for Engineering Optical Chirality
Small, EarlyView.By exploiting the nanoscale engineering of residual stresses in metallic thin films, this method enables scalable fabrication of submicrometer metallic helices with tunable geometry and material versatility. The resulting structures exhibit pronounced chiroptical responses across the mid‐ to near‐infrared range, offering a robust platform for chiral ...
Thu Hac Huong Le +3 more
wiley +1 more source
Characterization of low-noise quasi-optical SIS mixers for the submillimeter band [PDF]
, 1996 We report on the development of low-noise quasi-optical SIS mixers for the frequency range 400-850 GHz. The mixers utilize twin-slot antennas, two-junction tuning circuits, and Nb-trilayer junctions. Fourier-transform spectrometry has been used to verify
Bin, Mei +5 more
core +1 more source