Transformation for modifying the lumped-element equivalent circuit for metal-encapsulated crystals in unbalanced semi-lattice filters
J.K. Stevenson · Radio and Electronic Engineer · 1976
A transformation is given which enables crystals of equal motional inductance to be used in unbalanced semi-lattice filters which specify different inductance values. Allowance is made for stray capacitance between the crystal electrodes and earth; this capacitance is especially significant for metal-encapsulated units.