A Novel Wide Stopband PBG Structure with Fractal Features and Its application to the Design of Microstrip Low-pass Filter

Author

Chen, Wen- Ling ; Wang, Guang-Ming ; Qi, Yi-na ; Liang, Jian-gang

Author_Institution

Missile Inst., Air Force Eng. Univ., Sanyuan

fYear

2006

fDate

26-29 Oct. 2006

Firstpage

1

Lastpage

4

Abstract

A novel wide stopband one-dimensional PBG structure with fractal features is proposed, which is useful for microstrip circuits. The proposed structure is with the same size as the conventional PBG structures, but boasts the characteristic of ultra-wide stopband and low ripple level in the passband. In this paper, a microstrip low-pass filter is designed employing the proposed wide stopband PBG structure. The simulation results show the low-pass filter is able to achieve a 3-dB lower passband of 4.65 GHz with a ripple level of 0.78 dB and a maximum reflection loss of-15dB and a20-dB stopband of above 15 GHz with an attenuation of over 50.00 dB. The measurement results are found to be in good agreement with the simulation results.

Keywords

low-pass filters; microstrip filters; photonic band gap; fractal features; frequency 15 GHz; frequency 4.65 GHz; microstrip low-pass filter; wide stopband one-dimensional PBG structure; Circuits; Etching; Fractals; Low pass filters; Microstrip filters; Microwave filters; Passband; Periodic structures; Photonic band gap; Reflection; Fractal features; Low-pass filter (LPF); PBG; Wide stopband;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas, Propagation & EM Theory, 2006. ISAPE '06. 7th International Symposium on

Conference_Location

Guilin

Print_ISBN

1-4244-0162-3

Electronic_ISBN

1-4244-0163-1

Type

conf

DOI

10.1109/ISAPE.2006.353440

Filename

4168101