Ultra-wideband (UWB) bandpass filters using hybrid microstrip/CPW structures

Author

Wang, Hang ; Zhu, Lei ; Menzel, Wolfgang ; Chen, Zhi Ning

Author_Institution

Nanyang Technol. Univ., Singapore

fYear

2006

fDate

12-15 Dec. 2006

Firstpage

1216

Lastpage

1219

Abstract

A novel class of ultra-wideband (UWB) bandpass filters are reportedly constructed using the hybrid microstrip and coplanar waveguide (CPW) structure. Two types of multiple-mode resonators (MMRs) on CPW are configured to allocate their first three resonant frequencies at about the lower end, center and higher end of the UWB band. Then, a microstrip/CPW back-to-back coupling structure with enhanced degree is modeled to allocate its coupling peak around the center of this UWB band, i.e., 6.85 GHz. In final, two types of UWB bandpass filters with five poles are built up and realized with the passband covering the entire UWB band (3.1- 10.6 GHz). Simulated frequency responses and group delays are well verified by experiments over a wide frequency range. In addition, the designed UWB filter is found to only occupy one full-wavelength.

Keywords

band-pass filters; coplanar waveguides; frequency response; hybrid integrated circuits; microstrip lines; resonators; ultra wideband technology; bandpass filters; coplanar waveguide structure; frequency responses; hybrid microstrip; multiple-mode resonators; ultra wideband filters; Band pass filters; Bandwidth; Coplanar waveguides; Delay; Frequency; Microstrip filters; Microstrip resonators; Passband; Resonator filters; Ultra wideband technology; UWB bandpass filter; hybrid microstrip/CPW and back-to-back coupling structure; multiple-mode resonator;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. APMC 2006. Asia-Pacific

Conference_Location

Yokohama

Print_ISBN

978-4-902339-08-6

Electronic_ISBN

978-4-902339-11-6

Type

conf

DOI

10.1109/APMC.2006.4429626

Filename

4429626