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研友_ngJmgL
Lv3
390 积分
2020-07-16 加入
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毫米波辐射计半实物仿真方法研究
4个月前
已关闭
The radiometer and polarimeters at 80, 35, and 17 GHz for solar observations at Nobeyama
4个月前
已关闭
Active 5G radio resource management measurements using a multiple CATR reflector system
1年前
已完结
Development of an optimized compact test range
2年前
已关闭
Analysis and design method of beam waveguide feeds by beam mode expansion
2年前
已关闭
Beam-mode expansion applied to focal-region fields
2年前
已完结
Beam-mode expansion applied to focal-region fields
2年前
已关闭
Analysis and design of beam waveguide feeds by beam mode expansion
2年前
已关闭
E‐shaped patch to reduction of higher mode H‐plane radiation and low cross‐polarization
2年前
已完结
Multi-Ring Planar Array Feeds for Reducing Diffraction Effects in the Compact Range
2年前
已关闭
Strength of Concrete Slabs in Punching Shearing
4年前
已采纳
The solvent-mediated phase transformation of carbamazepine and the influence of surfactants on the nucleation mechanism and crystal morphology
4年前
已采纳
感谢
1年前
信息发布错误【积分已退回】
2年前
是自己需要的,非常感谢!
4年前
作者、内容都完全不沾边
4年前
作者:TAKABAYASHI M,DEGUCHI H,MIYAHARA N 摘要:Usually, compact antenna test range requires the uniform amplitude, phase and low cross polarized components in the test zone. Especially, we considered to achieve low cross polarized component. More than three quadratic reflectors only can satisfy the condition of eliminating cross polarized components derived from beam mode expansion technique. In this paper, we show that a tri-reflector system is applied to achieve these performances.
4年前
非常感谢
4年前
An Offset Spherical Tri-Reflector Antenna 作者:Fumio WATANABE,Yoshihiko MIZUGUCHI 摘要:A newly devised beam-steerable antenna which is capable of steering its radiation beam without moving a main reflector is presented. This is the offset type spherical reflector antenna with two specific subreflectors. With the application of mathematical programming, a new technique to determine the shapes of the subreflectors is proposed in order to compensate for the spherical aberration and the asymmetrical distortion of the aperture distribution, which degrade the electric characteristics.
4年前
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