Parasitic effect compensation of defected ground structure and its application to design of bandpass filter. Issue 4 (1st October 2016)

• Record Type: Journal Article
• Authors: Sarkar, D.; Moyra, T.; Mondal, P.
• Is Part Of: Waves in random and complex media. Volume 26:Issue 4(2016)
• Page Start: 458
• Page End: 475
• Publication Date: 2016-10-01
• Subjects: Electromagnetic waves -- Periodicals; Electromagnetic waves -- Scattering -- Periodicals; 531.1133
• DOI: 10.1080/17455030.2016.1167284
• Languages: English
• ISSNs: 1745-5030

Abstract

Abstract: This study demonstrates the parasitic effect observed in the passband of a bandpass filter (BPF) using a defected ground structure (DGS). This parasitic effect has been compensated by employing step discontinuity in the microstrip feed line. By implementing this technique, the performance of a pseudocombline BPF of 5 GHz operating frequency and a fractional bandwidth of around 15% together with a DGS cell is improved. The filter provides less than −1 dB insertion loss in the operating frequency and a stop band attenuation of about −20 dB on average. When the final BPF structure is simulated, fabricated, and measured, good agreement is observed between the simulated and measured results. The BPF proposed is applicable in the wireless LAN and RADAR systems.