A parallel-coupled microstrip bandpass filter by mixed fractals

Dong Yan; Shouqian Huang; Chuchen Ding; Jing Gu

doi:10.1117/12.2635196

25 April 2022 A parallel-coupled microstrip bandpass filter by mixed fractals

Dong Yan, Shouqian Huang, Chuchen Ding, Jing Gu

Proceedings Volume 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022); 1224448 (2022) https://doi.org/10.1117/12.2635196
Event: 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 2022, Guilin, China

Abstract

Parallel-coupled microstrip bandpass filter has the advantages of microstrip bandpass filter, which is light weight, wide frequency band and easy to process, and is widely used in wireless communication system. Because the parallel-coupled microstrip bandpass filter will increase the filter size due to the increase in the order, the non-uniform characteristics between the parallel coupling lines will cause the phase velocity of the even-mode and the odd-mode to be different, resulting in a higher second harmonic of the filter, its application scenarios are limited. In this paper, an in-line parallelcoupled microstrip bandpass filter with a mixed fractals structure is designed, and the working frequency is 2.4GHz. By adding Koch fractals and Minkowski fractals to the upper and lower edges of the microstrip line, the filter has better passband and stopband characteristics, and the second harmonic suppression ability is improved. The filter second harmonic attenuation reaches -40.56dB. The in-line W-shaped structure can further reduce the size of the filter, and the area reduction rate has reached 66.21%.

Citation Download Citation

Dong Yan, Shouqian Huang, Chuchen Ding, and Jing Gu "A parallel-coupled microstrip bandpass filter by mixed fractals", Proc. SPIE 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 1224448 (25 April 2022); https://doi.org/10.1117/12.2635196

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Fractal analysis

Bandpass filters

Filtering (signal processing)

Telecommunications

Wireless communications

Signal processing

Structural design

Show All Keywords

Keywords/Phrases

Search In:

Publication Years