A compact second-order chebyshev bandpass filter using u-shaped resonator and defected ground structure

• المؤلفون الرئيسيون: Ali, N. O., Hamid, M. R., Rahim, M. K. A., Murad, N. A., Thomas, S.
• التنسيق: مقال
• اللغة: English
• منشور في: Czech Technical University 2020
• الموضوعات: TK Electrical engineering. Electronics Nuclear engineering
• الوصول للمادة أونلاين: http://eprints.utm.my/id/eprint/93448/1/MohammadRijalHamid2020_ACompactSecond-orderChebyshev.pdf; http://eprints.utm.my/id/eprint/93448/; http://dx.doi.org/10.13164/RE.2020.0321

A compact bandpass filter using U-shaped resonators and Defected Ground Structures is proposed and designed at 5.8 GHz. The U-shaped resonators are placed around an indirectly coupled feed line while the Defected Ground Structures are positioned beneath them. The Ushaped resonator and U-shaped Defected Ground Structure are responsible for the high and low band rejection respectively. The proposed bandpass filter obeys the second order Chebyshev response which has low insertion loss of-1.87 dB, high rejection level and a sharp roll-off performance. The design is carried out using CST Microwave studio. The design is verified by fabricating and measuring the prototype in the laboratory. A good agreement is observed between the simulated and measured results.