A Compact Coplanar Waveguide (CPW)-Fed Zeroth-Order Resonant Filter for Bandpass Applications
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Dilip Kumar Choudhary
Abstract
A new CPW-fed bandpass filter based on zeroth order resonant (ZOR) technique is presented in this paper. Proposed filter structure is designed on a CPW single layer where via is not required, hence reduces fabrication complexity. The property of metamaterial of ZOR has been utilized to reduce the filter size. The proposed structure is symmetrically CPW-fed and contains tuning-fork stub, which connects patch to CPW ground plane. The metamaterial properties are characterized by plotting dispersion diagram of proposed structure. The experimental result of proposed filter design shows an insertion loss of 0.51 dB, return loss of 22.5 dB with fractional bandwidth 61.5 % at centre frequency 2.60 GHz. The size of the filter is 0.45 λg×0.36 λg (λg is the guided wavelength at centre frequency).
Acknowledgment
The authors would like to thank Mr. Naveen Mishra, ISM Dhanbad, India for the assistance provided for measuring characteristic parameters of proposed bandpass filter.
References
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Articles in the same Issue
- Frontmatter
- A Microwave Tunable Bandpass Filter for Liquid Crystal Applications
- Design of a Balun Bandpass Filter with Asymmetrical Coupled Microstrip Lines
- A Compact Coplanar Waveguide (CPW)-Fed Zeroth-Order Resonant Filter for Bandpass Applications
- A Compact Quad-Band Bandpass Filter Based on Defected Microstrip Structure
- Three Pole Wideband Waveguide Bandpass Filter using Split Ring Resonator Integrated Circular Fractal Shape
- Compact Dual-band Bandpass Filter Based on HMSIW and DS-CSRR
- High Selectivity Wideband Bandpass Filter Using Stub Loaded Resonator
- Narrow-Band Bandpass Filter for Wireless Communication System
- Design and Analysis of a Triple Stop-band Filter Using Ratioed Periodical Defected Microstrip Structure
- Design of Microstrip Lowpass Filter with Sharp Roll-off using Elliptical and Radial Resonators
- A Compact Via-free Composite Right/Left Handed Low-pass Filter with Improved Selectivity
Articles in the same Issue
- Frontmatter
- A Microwave Tunable Bandpass Filter for Liquid Crystal Applications
- Design of a Balun Bandpass Filter with Asymmetrical Coupled Microstrip Lines
- A Compact Coplanar Waveguide (CPW)-Fed Zeroth-Order Resonant Filter for Bandpass Applications
- A Compact Quad-Band Bandpass Filter Based on Defected Microstrip Structure
- Three Pole Wideband Waveguide Bandpass Filter using Split Ring Resonator Integrated Circular Fractal Shape
- Compact Dual-band Bandpass Filter Based on HMSIW and DS-CSRR
- High Selectivity Wideband Bandpass Filter Using Stub Loaded Resonator
- Narrow-Band Bandpass Filter for Wireless Communication System
- Design and Analysis of a Triple Stop-band Filter Using Ratioed Periodical Defected Microstrip Structure
- Design of Microstrip Lowpass Filter with Sharp Roll-off using Elliptical and Radial Resonators
- A Compact Via-free Composite Right/Left Handed Low-pass Filter with Improved Selectivity
