Abstract
The design of microwave absorbers is directly correlated to the general performance of an anechoic chamber for its signal absorptive capabilities. However, the cost of importing the total required microwave absorber for the 5m × 4m × 3m proposed anechoic chamber in the University of Port Harcourt Nigeria is at the tune of twenty-seven thousand dollars. This research is carried out to simulate and fabricate the microwave absorber using polyurethane material and locally obtained carbon in order to reduce cost. The simulation is done using Computer Simulation Technology (CST) software for the desired frequency range of 1GHz to 10GHz. Simulation results proved to have good absorptive performance and reflectivity loss comparable to that of the conventional microwave absorber. The reflectivity performance is below -30dB across the desired frequency range. With the polyurethane material and locally obtained conducting carbon the estimated cost is five thousand five hundred dollars against the twenty-seven thousand dollars importation cost; thereby reducing the cost by more than 60%.
Highlights
The design of microwave absorbers is directly correlated to the general performance of an anechoic chamber for its signal absorptive capabilities
A test analyser environment had to be in place and one of these is the introduction of an Anechoic Chamber
The design of a proper microwave absorber must be developed based on information such as reflectivity and the important factor in determining a microwave absorber material is the high dielectric constant (ε), cost and application [2]
Summary
The design of the microwave pyramidal absorber was done using Computer Simulation Technology (CST) and is based on the concept of TDK ICT 030 [5,6,7]. The lower part of the absorber which is the base has a dimension of 100mm (10cm) length x 100mm (10cm) width x 100mm (10cm) height. The upper part of the absorber has a dimension of 10mm (1cm) length x 10mm (1cm) width x 250mm (25cm) height. The material used in the design of the absorber is Polyurethane having an epsilon (ε) value of 3.5 with a frequency range of 1GHz to 10GHz. The design has 9 pieces of the pyramid of 10cm x 10cm x 30cm each.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: European Journal of Engineering Research and Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
