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US 4,905,358 AGranted
Thin film active trimmable capacitor/inductor
AssigneeMotorola, Inc.
InventorStephen B. Einbinder
Life of this patent
Estimating the term…
Abstract
A shorted component 10 is provided on a module 18 whereby the shorted component 10 is trimmed to either a capacitor 22 or an inductor 30. In the same step, the capacitor or inductor is further trimmed to a predetermined value of reactance.
Claims13
A method of fabricating a capacitor or an inductor comprising the steps of:
- (a) positioning a self-supporting short circuit element having at least two contacts as a component of an electronic circuit residing on a substrate;
- (b) modifying said short circuit element within said electronic circuit to eliminate the short circuit and form a capacitor structure, and further modifying said capacitor structure to provide a capacitance value when a capacitor is preferred for proper operation of said electronic circuit;
- and
- (c) modifying said short circuit element within said electronic circuit to eliminate the short circuit and form an inductor structure and further modifying said inductor structure to provide an inductance value when an inductor is preferred for proper operation of said electronic circuit.
1 more element
A method of fabricating a capacitor or an inductor comprising the steps of:
- (a) positioning a self-supporting short circuit element having at least two contacts as a component of an electronic circuit residing on a substrate;
- (b) laser trimming said short circuit element within said electronic circuit to eliminate the short circuit and form a capacitor structure and further laser trimming said capacitor structure to provide a capacitance value when a capacitor is preferred for proper operation of said electronic circuit;
- and
- (c) laser trimming said short circuit element within said electronic circuit to eliminate the short circuit and form an inductor structure and further laser trimming said inductor structure to provide an inductance value when an inductor is preferred for proper operation of said electronic circuit.
1 more element
A method for manufacturing and optimizing a voltage controlled oscillator, comprising the steps of:
- (a) positioning a plurality of self-supporting short circuit elements each having at least two contacts as components of an electronic circuit residing on a module;
- (b) modifying at least one of said short circuit elements within said electronic circuit to eliminate the short circuit and form a capacitor structure and further modifying said capacitor structure to provide a capacitance value when a capacitor is preferred for proper operation of said electronic circuit;
- and
- (c) modifying said at least one of said short circuit elements within said electronic circuit to eliminate the short circuit and form an inductor structure and further modifying said inductor structure to provide an inductance value when an inductor is preferred for proper opreation of said electronic circuit.
1 more element
A method for manufacturing and optimizing a voltage controlled oscillator, comprising the steps of:
- (a) positioning a plurality of self-supporting short circuit elements each having at least two contacts as components of an electronic circuit residing on a module;
- (b) laser trimming at least one of said short circuit elements within said electronic circuit to eliminate the short circuit and form a capacitor structure, and further laser trimming at least one of said capacitor structure to provide a capacitance value when a capacitor is preferred for proper operation of said electronic circuit;
- and
- (c) laser trimming at least one of said short circuit elements within said electronic circuit to eliminate the short circuit and form an inductor structure and further laser trimming at least one of said inductor structure to provide an inductance value when an inductor is preferred for proper operation of said electronic circuit.
1 more element
Dependencies are inferred from the claim text.