Compact 900‐MHz hairpin‐line filters using high dielectric constant microstrip line
- 1 July 1994
- journal article
- research article
- Published by Wiley in International Journal of Microwave and Millimeter-Wave Computer-Aided Engineering
- Vol. 4 (3) , 272-281
- https://doi.org/10.1002/mmce.4570040307
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 (εr= 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.Keywords
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