Design And Analysis Of SIW Bandstop Filter For Interference Suppression In X Band Communication System

Chek San, Mohamad Khairul Azwan (2016) Design And Analysis Of SIW Bandstop Filter For Interference Suppression In X Band Communication System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text Design And Analysis Of SIW Bandstop Filter For Interference Suppression In X Band Communication System 24 pages.pdf - Submitted Version Download (304kB)

Abstract

Radio Detection And Ranging (RADAR) are widely used in many applications such as in military, aviation, and weather-sensing. Basically radar is an object-detection system that uses radio waves to determine the range, altitude, direction, or speed of objects by transmitting pulse and receiving reflected signal. Signal interference and harmonics is a common problem that exist in radar system. The need of bandstop filters to eliminate unwanted frequency is crucial. So the filter response need to be of a high Q-factor for high selectivity and high level of frequency suppression for filtering. Bandstop filter is placed after the receiver part to eliminate the unwanted signal received contained with the actual echo signal reflected by the object. Theoretically, a high notch depth and selectivity of matched bandstop filters can be produced by using only two lossy resonators. New developments in the design of band reject filters are essential to meet the ever increasing demands on suppression of unwanted signals and miniaturization of microwave communications systems. Substrate Integrated Waveguide (SIW) is a waveguide that synthesize inside a substrate and the propagating wave is delimit by arrays of via holes. The field distribution in SIW is similar with a conventional rectangular waveguide. Hence, it takes the advantages of low cost, high level suppression, high Q-factor and can easily be integrated into microwave and millimeter wave integrated circuits.

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