A notched UWB filter with LTCC technology

Author

Fu, Bo ; Wei, Xubo ; Liao, Jiaxuan ; Zhang, Xiaotang

Author_Institution

Res. Inst. of Electron. Sci. & Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2012

fDate

19-20 April 2012

Firstpage

1

Lastpage

3

Abstract

A notched ultra-wideband (UWB: 3.1GHz-10.6GHz) bandpass filter (BPF) using step impedance resonator (SIR) with LTCC technology and coplanar waveguide (CPW) was presented in this paper. And it with a controllable narrow notch (rejection) band with 1/2λ SIR structure. It was verified that the SIR was able to create a narrower notch band than other structures, such as spur-lines and open circuited. And in this paper some quarter-wavelength transmission lines were used to increase transmission zeros for good rejection performance. The results simulation of return loss is less than -14dB, the insertion loss is less than 0.5dB and the wide stopband after 20GHz with attenuation more than 12dB. The size of the UWB filter is 7mm × 8mm × 0.55mm.

Keywords

band-pass filters; band-stop filters; ceramics; coplanar waveguides; electric impedance; electromagnetic wave scattering; resonator filters; transmission lines; ultra wideband communication; BPF; CPW; LTCC technology; SIR structure; attenuation; bandpass filter; controllable narrow notch; coplanar waveguide; frequency 3.1 GHz to 10.6 GHz; insertion loss; notched UWB filter; notched ultra-wideband; open circuited; quarter-wavelength transmission line; rejection performance; return loss; spur-lines; step impedance resonator; stopband; transmission zero; Band pass filters; Coplanar waveguides; Impedance; Low pass filters; Microstrip filters; Resonator filters; Ultra wideband technology; coplanar waveguide (CPW); low temperature co-fired ceramic (LTCC); notched band; quarter-wavelength transmission lines; step impedance resonator (SIR); ultra-wideband (UWB);

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Circuits and System Technology (MMWCST), 2012 International Workshop on

Conference_Location

Chengdu

Print_ISBN

978-1-4673-1893-8

Type

conf

DOI

10.1109/MMWCST.2012.6238144

Filename

6238144