A Compact Via-free Composite Right/Left Handed Low-pass Filter with Improved Selectivity
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Ashish Kumar
Abstract
In this paper, a compact via-free low pass filter is designed based on composite right/left handed (CRLH) concept. The structure uses open ended concept. Rectangular slots are etched on signal transmission line (TL) to suppress the spurious band without altering the performance and size of filter. The filter is designed for low pass frequency band with cut-off frequency of 3.5 GHz. The proposed metamaterial structure has several prominent advantages in term of selectivity up to 34 dB/GHz and compactness with average insertion loss less than 0.4 dB. It has multiple applications in wireless communication (such as GSM900, global navigation satellite system (1.559–1.610 GHz), GSM1800, WLAN/WiFi (2.4–2.49 GHz) and WiMAX (2.5–2.69 GHz)). The design parameters have been measured and compared with the simulated results and found excellent agreement. The electrical size of proposed filter is 0.14λ0× 0.11λ0 (where λ0 is free space wavelength at zeroth order resonance (ZOR) frequency 2.7 GHz).
Acknowledgment
The authors would like to thank Mr. Naveen Mishra, IIT (ISM) Dhanbad, India for the assistance provided in measuring characteristic parameters of proposed microstrip filter.
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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
