Bandpass filter with improved spurious performance using modified ring dielectric resonator in MIC environment
✍ Scribed by Kumar Vaibhav Srivastava; Vishwa V. Mishra; Animesh Biswas
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 469 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A C‐band bandpass filter is designed using modified ring dielectric resonator in microwave integrated circuit (MIC) environment for improved spurious response. The dielectric resonator (DR) filters are generally made in cavity environment because of its good spurious response in cavity environment, but its spurious performance degrades as the filter is designed in MIC environment. In MIC environment, the smaller substrate thickness makes DR closer to ground plane and affects its resonance mode spectrum which, in turn, affects closely spaced resonant frequencies. The dense resonant mode spectrum of DR in MIC environment limits its application for filter designing. This article introduces a comparative study on filter realization with modified ring DR and conventional ring DR to show the improvement of spurious response in MIC environment. The simulated and measured results of these filters are presented to demonstrate the validity of the design procedure and improvement of spurious response. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1426–1431, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23391