Analysis on wideband band pass filter microwave sensor performances for measuring rice quality in agriculture industry

• Main Authors: Abu Bakar, Ameerul Fiqri, Abang Zaidel, Dyg. Norkhairunnisa, Awang Mat, Dyg. Azra, Sahrani, Shafrida, Kismet, Hong Ping, Mohd. Sharip, Mohd. Ridhuan, Seman, Norhudah, Abang Zaidel, Dayang Norulfairuz
• Format: Article
• Language: English
• Published: 2050Science Publishers 2018
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/82021/1/NorhudahSeman2018_AnalysisonWidebandBandPassFilter.pdf; http://eprints.utm.my/id/eprint/82021/; https://apjfss.wixsite.com/website-2

This paper introduced the analysis of three microstrip band pass filter designs which can work as a microwave resonator/sensor to measure the quality of rice. To maintain the tight coupling for over a wideband frequency range, all of the designs implemented broad-side coupling microstrip-slot tech-nique into the design. The analysis shows that band pass filter Type 2 has the best performance com-pared to the other two designs; where the return loss is -25.3 dB and insertion loss is -0.1 dB. This is due to the signal that can transfer effectively in the ring-shaped patch (comparing Type 1 with Type 2 and Type 3) and with thicker ring (comparing Type 2 and Type 3). The advantage of using the wide-band band pass filter as a microwave resonator/sensor is compact in size and low manufacturing cost.