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Compact 900-MHz hairpin-line filters using high dielectric constant microstrip line

✍ Scribed by Pramanick, Protap

Book ID
102949315
Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
771 KB
Volume
4
Category
Article
ISSN
1050-1827

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✦ Synopsis

Abstract

Several miniature bandpass filters have been developed by accurate modeling of experimental and computer‐generated coupling data of hairpin‐line microstrip line resonators on high dielectric constant (ε~r~ = 80 and 90) substrate. The materials are temperature stable and of high quality factor. The experimental results show excellent filter shapes and some novelty of the design approach. Besides the experimental results, this article also presents the curves and semiempirical models for the coupling coefficients between hairpin‐line resonators for two different dielectric materials and thicknesses. The method and the results will be useful in realizing compact planar filters for cellular radio, global positioning systems and superconducting microstrip filters.

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## Abstract In this paper, a bandpass filter using a microstrip slow‐wave open‐loop resonator with high impedance lines is presented. This resonator has the high impedance of a loaded microstrip line, which significantly increases not only the slow‐wave effect but also the dispersion effect. These