Planar UWB Filter with Multiple Notched Band and Stopband with Improved Rejection Level
-
Abu Nasar Ghazali
and
Srikanta Pal
Abstract
Analysis and realization of a microstrip-based planar ultra-wideband (UWB) filter with integrated multiple notch elimination property and simultaneously extended upper stopband is proposed. Initially, a UWB filter based on back-to-back microstrip-to-CPW technology is designed. Later, multiple spiral defected ground structures (DGS) are embedded to obtain multiple passband notches. Further, double equilateral U (DEU)-type DGS are used to improve upon the rejection level in upper stopband. The multiple passband notches are results of embedded spiral-shaped DGS (SDGS), while extended upper stopband is the outcome of suppressed higher-order spurious harmonics. The flexible dual-attenuation poles of DEU-shaped DGS suppress the stopband harmonics and widen the stopband. An approximate lumped equivalent circuit model of the proposed filter is modelled. The filter is compact and its layout measures 25.26 mm × 11.01 mm. The measured result is in good agreement with the full-wave electromagnetic (EM) simulation and circuit simulation.
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©2015 by De Gruyter
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Articles in the same Issue
- Frontmatter
- A Smile Face Monopole Antenna with Quadruple Band-Notched Characteristics
- Multi-band Monopole Antennas Loaded with Metamaterial TL
- Angular Stable, Dual-Polarized and Multiband Modified Circular Ring Frequency Selective Surface
- Planar UWB Filter with Multiple Notched Band and Stopband with Improved Rejection Level
- Photonic Generation of Dual-Band Power-Efficient Millimeter-Wave UWB Signals
- A Novel Anti-Stealth Technique Based on Stratospheric Balloon-Borne Radar in Heterogeneous Environments
- A Novel Smooth Gauss–Semi-Markov Mobility Model for Mobile Wireless Networks
- A Developed ESPRIT Algorithm for DOA Estimation
- Secure Spectrum Data Fusion with Presence of Massive Malicious Users
- On the Study of Cognitive Bidirectional Relaying with Asymmetric Traffic Demands
- Joint Access Control Based on Access Ratio and Resource Utilization for High-Speed Railway Communications
