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Low-emissivity (Low-E) films, which have low transparence in near infrared region, are prepared by RF magnetron reactive sputtering and DC sputtering in turn as the structure of air/TiO2/Ti/Ag/TiO2/ on the glass. Titanium layer protection Ag layer from being oxidized is observed. The transmittance of low-E films was measured by spectrophotometer. The Low-E films can get a best transmittance, while...
As a high permittivity and low loss ceramic, BaO-Nd2O3-TiO3 (BNT) is widely used in millimeter wave dielectric resonator. Perfect BNT thin films are obtained by through high density plasma RF sputter, and compared dielectric properties with bulk. The results show that underlay temperature has mainly effect on thin films. The optimize technology is gotten. Through simulation, thin film microstrip line...
A quadrifilar antenna for GPS applications is designed by HFSS. This quadrifilar antenna has four helical arms wound around a dielectric cylinder which has high permittivity and low loss. The four arms are fed with equal amplitudes with 0deg, 90deg, 180deg, 270deg phase by integrated feeding network. Through precisely control of phase and design of high permittivity ceramic, quadrifilar antenna obtains...
AlN thin films with high c-axis orientation are deposited by DC reactive magnetron sputtering and active feedback control system. Based on the analysis of the Berg hysteresis model, the authors analyze the technology parameter influence on the hysteresis effect, including pumping speed, temperature of substrate and target, input power, target to substrate distance and area of target. A new active...
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