IMPROVED FREQUENCY RESPONSE OF MICROSTRIP LOWPASS FILTER USING DEFECTED GROUND STRUCTURES | Zendy

Thulaseedharan Kodiyattuvila Rekha | Zendy; P Abdulla | Zendy; P. M. Jasmine | Zendy; P. M. Raphika | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

IMPROVED FREQUENCY RESPONSE OF MICROSTRIP LOWPASS FILTER USING DEFECTED GROUND STRUCTURES

Author(s) -

Thulaseedharan Kodiyattuvila Rekha,

P Abdulla,

P. M. Jasmine,

P. M. Raphika

Publication year - 2018

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc17112002

Subject(s) - microstrip , low pass filter , frequency response , filter (signal processing) , acoustics , electronic engineering , physics , materials science , engineering , electrical engineering

The frequency response characteristics of a basic microstrip lowpass filter improved using H-shaped defected ground structures are presented. The proposed defected ground structures behave as a resonant element at high frequency and thus eliminate the stopband frequencies to achieve wide stopband rejection. The 3 dB cutoff frequency of the filter is 1.935 GHz. Due to the defects etched in the ground plane of the basic structure, the harmonic rejection is improved from 5th to 10th order along with low insertion loss and voltage standing wave ratio together with good selectivity. The compact filter has a size of 0.0338λg , with λg = 85.18 mm being the guided wavelength at the cutoff frequency. The characteristics of the lowpass filter are verified through simulation and measurement. Consistent and stable results are obtained.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research