A Fractal Based BSF for Microwave Oven Radiation Leakage ReductionTechnical Report MRG 9–2016 (2016)
In this report, a new microstrip BSF composed of fractal based open-loop resonators coupled with open-stub transmission line. The open-loop resonators are in the form of modified Minkowski fractal geometry of the 2nd iteration. The open stub has been adopted to improve the selectivity of the stopband response.The proposed filter is designed at 2.45 GHz. Modeling and performance assessments of the proposed filter have been evaluated using the computer software technique CST Microwave Studio. Simulation results show that the modeled filter offers stopband response with high selectivity. A prototype of the proposed filter is fabricated. The size limitations of the microwave oven opening width have been taken into account. Good agreement has been found between measured and simulated results. Four array of such a filter have been implemented to cover the microwave oven door frame taking into consideration the opening dimensions such that it well fit it. Measured radiated electric fields from the oven show that it considerably reduces the leaked radiation. By suitable choice of substrate material and carrying out the required dimension scaling, the proposed design idea is flexible and can be generalized for use for a wide variety of microwave equipment in which microwave leakage represents a serious issue.
- Radiation Leakage Reduction,
- Fractal-based BSF,
- Electromagnetic modeling and simulation
Publication DateJune 15, 2016
Citation InformationHayder S. Ahmed, Jawad K. Ali, Ali J. Salim, A Fractal Based BSF for Microwave Oven Radiation Leakage Reduction, Technical Report MRG 9-2016, Microwave Research Group, Department of Electrical Engineering, University of Technology, Iraq, June 15, 2016.