A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
RADIO REFLECTOR AND BUILDING MATERIAL
To provide a radio reflector and a building material, which reflect an electromagnetic wave while holding a strength, and include flexibility.SOLUTION: A radio reflector 11 contains a conductor that reflects an electromagnetic wave. In a state where the radio reflector 11 is flattened, when the electromagnetic wave of which a frequency of an incident wave is 3GHz or more and 300GHz or less at an angle of which an incident angle of the incident wave is 15 degrees or more and 75 degrees or less is reflected to the radio reflector 11, at least one frequency that a strength of a reflection wave when the incident wave is in a normal reflection becomes -30 dB or more against the incident wave is existed. A change rate of a front surface resistance value R2 of a state where the radio reflector 11 is curved along a curve surface of 200 mm of a curve rate radius to a front surface resistance value R1 of the radio reflector 11 in a state where the radio reflector 11 is flattened is -10% or more and 10% or less, and a curve elastic rate is 0.05 GPa or more and 4 GPa or less.SELECTED DRAWING: Figure 1
【課題】電波を強度を保ちながら反射させ、かつ可撓性を有する電波反射体、建築材料を提供する。【解決手段】電波を反射させる導電体を含む電波反射体１１であって、電波反射体１１を平らとした状態で、電波反射体１１に、入射波の入射角が１５度以上７５度以下の角度で、入射波の周波数が３ＧＨｚ以上３００ＧＨｚ以下の電波を反射させたときに、入射波が正規反射したときの反射波の強度が入射波に対して－３０ｄＢ以上となる周波数が少なくとも１つ存在し、電波反射体１１を平らとした状態の電波反射体１１の表面抵抗値Ｒ１に対して、電波反射体１１を曲率半径２００ｍｍの曲面に沿って湾曲させた状態の表面抵抗値Ｒ２の変化率は、－１０％以上１０％以下であり、曲げ弾性率が０．０５ＧＰａ以上４ＧＰａ以下である。【選択図】図１
RADIO REFLECTOR AND BUILDING MATERIAL
To provide a radio reflector and a building material, which reflect an electromagnetic wave while holding a strength, and include flexibility.SOLUTION: A radio reflector 11 contains a conductor that reflects an electromagnetic wave. In a state where the radio reflector 11 is flattened, when the electromagnetic wave of which a frequency of an incident wave is 3GHz or more and 300GHz or less at an angle of which an incident angle of the incident wave is 15 degrees or more and 75 degrees or less is reflected to the radio reflector 11, at least one frequency that a strength of a reflection wave when the incident wave is in a normal reflection becomes -30 dB or more against the incident wave is existed. A change rate of a front surface resistance value R2 of a state where the radio reflector 11 is curved along a curve surface of 200 mm of a curve rate radius to a front surface resistance value R1 of the radio reflector 11 in a state where the radio reflector 11 is flattened is -10% or more and 10% or less, and a curve elastic rate is 0.05 GPa or more and 4 GPa or less.SELECTED DRAWING: Figure 1
【課題】電波を強度を保ちながら反射させ、かつ可撓性を有する電波反射体、建築材料を提供する。【解決手段】電波を反射させる導電体を含む電波反射体１１であって、電波反射体１１を平らとした状態で、電波反射体１１に、入射波の入射角が１５度以上７５度以下の角度で、入射波の周波数が３ＧＨｚ以上３００ＧＨｚ以下の電波を反射させたときに、入射波が正規反射したときの反射波の強度が入射波に対して－３０ｄＢ以上となる周波数が少なくとも１つ存在し、電波反射体１１を平らとした状態の電波反射体１１の表面抵抗値Ｒ１に対して、電波反射体１１を曲率半径２００ｍｍの曲面に沿って湾曲させた状態の表面抵抗値Ｒ２の変化率は、－１０％以上１０％以下であり、曲げ弾性率が０．０５ＧＰａ以上４ＧＰａ以下である。【選択図】図１
RADIO REFLECTOR AND BUILDING MATERIAL
電波反射体、および建築材料
NOMOTO HIROYUKI (author)
2023-08-14
Patent
Electronic Resource
Japanese