Journal of Microwares 

About: Journal of Microwares is an academic journal. The journal publishes majorly in the area(s): Antenna (radio) & Antenna measurement. Over the lifetime, 118 publications have been published receiving 229 citations.

Air Breakdown of High Power Microwave Pulse and Its Effect on Transmitted Energy

Abstract: In this paper,air breakdown by high power micro wave pulse is modeled using the parameters in comparatively wide region for the interaction between electrons and air neutral molecules. Escaping time for high power microwave pulse is defined, and the relation between transmitted en ergy density and incident power density is anlyzed. The effects of a quantity of parameters on the transmitted energy are studied.

Microwave Induced Oxidation Process for Dye Wastewater Treatment with Modified Attapulgite as Catalyst

Abstract: Argazol Blue BF-BR150% wastewater was treated by microwave induced oxidation process(MIOP), in which modified attapulgite was used as catalyst. The decolorization of 83.12% was obtained when the dye solution(50mL,300mg/L)was irradiated for 5mins by 500W microwave in the presence of modified Attapulgite. The experimental results showed that Argazol Blue BF-BR150% is degraded by microwave on the surface of catalyst. The research on kinetics suggested that the process of MIOP accords to first-order reaction,the equation is -lnC= 0.1186 t -4.6356, r =0.9716, k =1.186×10 -1 min -1 , t _ 1/2 =5.84min.

The Desulfurization of High Organic Sulfur Coal by Oxidation Under Microwave Radiation

Abstract: The high sulfur coal was treated in acetic acid and hydrogen peroxide oxidation under microwave radiation. The effect of treating conditions, including the concentration of coal, the size of coal, treatment time, the ratio of acetic acid and hydrogen peroxide and microwave radiation power on the rate of desulfurization was studied by single factor method. It is obvious that the rate of desulfurization of coal is related to treating conditions and the rate of desulfurization increases with the extraction time, the ratio of acetic acid and hydrogen peroxide and microwave radiation power, and decreases with the size of coal and concentration of coal. In the optimum conditions: the concentration of coal is 3/50(g/ml), the size of coal is d ≤0.23mm, treatment time is 20min, the ratio of acetic acid and hydrogen peroxide is 1:1(ratio of molar is 11.5:38.5 ), microwave radiation power is 850W, the rate of desulfurization of the coal can reach up to 60.2%.

Study on Shielding Effectiveness of Reinforced-Concrete in High Power Electromagnetic Environment

Abstract: An analysis of the transient electromagnetic fields (HPM, UWB, HEMP, FREMP) penetrating through the reinforced concrete layer is carried out by finite difference time domain (FDTD) method. The factors of shielding effectiveness such as cross points of the reinforcement mesh, connection of the reinforcement hoop, and natural defensive layers are also discussed in this paper.

UWB Microwave Imaging for Early Detection of Breast Cancer

Abstract: An ultra-wideband (UWB) microwave imaging scheme with separated transmitting and receiving antennas was investigated by using finite difference time domain method (FDTD). The use of separated transmitting and receiving antennas allows to avoid the critical requirment for the reflection of the antenna terminal, as required in the system with duplex UWB antenna. Imaging results by using the confocal imaging algorithm demonstrate the feasibility of the scheme in the detection of early breast cancer of radius smaller than 10mm.