In this paper, a new form of printed antenna for a five-band C-band applications is presented. The proposed antenna consists of six simple rectangles, whose geometry resembles all the “hand” of man. By varying the g...In this paper, a new form of printed antenna for a five-band C-band applications is presented. The proposed antenna consists of six simple rectangles, whose geometry resembles all the “hand” of man. By varying the geometries and dimensions of these six rectangles, five different resonance modes can be effectively created for five distinct frequency bands, respectively. The overall dimension of the proposed antenna can reach 45 × 50 × 2.54 mm3. The simulated results show that the presented antenna is adapted to 4.6/5.24/5.6/6.7/7.3 GHz five bands which are applied to C-band.展开更多
A novel interesting d^（10） metal hybrid, [1,2-C_6H_（10）（NH_3）_2]ZnCl_4; 1,2-diammoniumcyclohexane tetrachlorozincate（II） was grown, structurally characterized and their vibrational as well as thermal and diele...A novel interesting d^（10） metal hybrid, [1,2-C_6H_（10）（NH_3）_2]ZnCl_4; 1,2-diammoniumcyclohexane tetrachlorozincate（II） was grown, structurally characterized and their vibrational as well as thermal and dielectric proprieties were studied. A preliminary single crystal X-ray diffraction structural analysis has revealed that the latter crystallizes in the monoclinic system（space group C2/c）. Its unit cell dimensions are a = 32.394（9） ？, b = 12.217（4） ？, c = 10.175（3） ？, β = 97.852（13）° with Z = 12 and the refinement converged to R = 0.034 and ωR = 0.065. Hirshfeld surface analyses, especially d_（norm）surface and fingerprint plots were used for decoding intermolecular interactions in the crystal network. The optimized geometric parameters, normal mode frequencies and corresponding vibrational assignments of the present compound were theoretically examined by the DFT/B3 LYP method with the Lan L2 DZ basis set. The thermal and dielectric analyses suggested the presence of ferroelectric phase transition at 314 K.展开更多
文摘In this paper, a new form of printed antenna for a five-band C-band applications is presented. The proposed antenna consists of six simple rectangles, whose geometry resembles all the “hand” of man. By varying the geometries and dimensions of these six rectangles, five different resonance modes can be effectively created for five distinct frequency bands, respectively. The overall dimension of the proposed antenna can reach 45 × 50 × 2.54 mm3. The simulated results show that the presented antenna is adapted to 4.6/5.24/5.6/6.7/7.3 GHz five bands which are applied to C-band.
文摘A novel interesting d^（10） metal hybrid, [1,2-C_6H_（10）（NH_3）_2]ZnCl_4; 1,2-diammoniumcyclohexane tetrachlorozincate（II） was grown, structurally characterized and their vibrational as well as thermal and dielectric proprieties were studied. A preliminary single crystal X-ray diffraction structural analysis has revealed that the latter crystallizes in the monoclinic system（space group C2/c）. Its unit cell dimensions are a = 32.394（9） ？, b = 12.217（4） ？, c = 10.175（3） ？, β = 97.852（13）° with Z = 12 and the refinement converged to R = 0.034 and ωR = 0.065. Hirshfeld surface analyses, especially d_（norm）surface and fingerprint plots were used for decoding intermolecular interactions in the crystal network. The optimized geometric parameters, normal mode frequencies and corresponding vibrational assignments of the present compound were theoretically examined by the DFT/B3 LYP method with the Lan L2 DZ basis set. The thermal and dielectric analyses suggested the presence of ferroelectric phase transition at 314 K.
