DESIGN OF MULTIBAND FILTERS BASED ON HYBRID POLYNOMIALS

• Main Author: ZEE CHIEN, ELDEN PHENG
• Format: Thesis
• Language: English
• Published: 2017
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://utpedia.utp.edu.my/21983/1/2017%20-%20ELECTRICAL%20%26%20ELECTRONIC%20-%20%20DESIGN%20OF%20MULTIBAND%20FILTERS%20BASED%20ON%20HYBRID%20POLYNOMIALS%20-%20ELDEN%20ZEE%20CHIEN%20PHENG.pdf; http://utpedia.utp.edu.my/21983/

Multiband filters are gaining importance in filter design industry due to the increased demand in multi-bandwidth support and coexistence in a single device. Although many researches had been done, The key challenges can be seen in its sizing, complexity and lack of a comprehensive synthesis method that covers both lumped and distributed element. Two approaches of generating a multiband response based on the concept of hybrid polynomials is presented in this thesis. The first approach modifies the existing Chebyshev type I polynomials to generate a symmetrical dual-band response. The second approach modifies the existing Chebyshev type I polynomials to generate a symmetrical tri-band response. The two approaches presented is capable of forming an analytical model (that is the transfer and reflection function) in the beginning of the designing process. The analytical model allows for better designing process in terms of greater design flexibility, control and analysis. In this thesis, Both approaches discussed will be experimented as a proof of concept of the feasibility of hybrid polynomials.