Wide stopband band-notched UWB BPF and its application to determination of material dielectric constant

Author

Hui Wang ; Kam-Weng Tam ; Sut-Kam Ho ; Wen Wu

Author_Institution

Ministerial Key Lab. of JGMT, Nanjing Univ. of Sci. & Technol., Nanjing, China

fYear

2013

fDate

1-3 Aug. 2013

Firstpage

104

Lastpage

107

Abstract

An ultra-wideband (UWB) bandpass filter (BPF) with notched band and wide stopband has been designed, fabricated, and discussed in this work. The proposed UWB BPF is constructed on the basis of microstrip/slotline transitions, which can be used as the feeding structure to provide strong coupling for wideband BPF. The fabricated BPF has good in-band performance with a notched band centered at 8.0 GHz with 8.5% 10-dB fractional bandwidth and the wide stopband with 20-dB attenuation extends to 40 GHz. In addition, a transmission zero, i.e., the notched band can be used for determination of dielectric properties. The effective permittivity of some common materials namely FR-4 or glasses are computed with better than 10% relative error.

Keywords

band-pass filters; microstrip transitions; microwave filters; permittivity; strip lines; ultra wideband communication; UWB bandpass filter; dielectric properties; effective permittivity; feeding structure; frequency 40 GHz; frequency 8.0 GHz; material dielectric constant; microstrip-slotline transitions; notched band; transmission zero; ultrawideband BPF; wide stopband; Abstracts; Band-pass filters; Glass; Microstrip; Substrates; Thickness measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics (iWEM), 2013 IEEE International Workshop on

Conference_Location

Kowloon

Print_ISBN

978-1-4799-6654-7

Type

conf

DOI

10.1109/iWEM.2013.6888783

Filename

6888783