1. Exact expressions for the coupling coefficients in prototype filter were obtained in. 2. Coupling coefficients , designated as c, are given for the different schedules of reinforcement.3. Coupling coefficient is a function of the geometry of the system.4. Later definitions of the coupling coefficient are generalizations or refinements of preceding definitions. 5. The fraction of the field that does couple is called the coupling coefficient . 6. Note that the sign of the coupling coefficient k itself is of no importance. 7. They represent values of inductive and capacitive coupling coefficients of the coupled resonant LC-circuits. 8. Tight coupling is when the coupling coefficient is around 1 as with conventional iron-core transformers. 9. The coupling coefficient k for the case of two equal resonators is defined by formula 10. Killeen & Sitomer ( 2003 ) showed that the coupling coefficient for FR schedules then becomes:
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