Patent ID: 6750734
Filing Date: 2004-06-15
Classification: H03H,H03J

Abstract:
A method for tuning an inductive (â€œLâ€ ) and capacitive (â€œCâ€ ) filter based on a desired frequency, said method comprising the steps of:providing at least one inductive (â€œLâ€ ) bank comprising a plurality of inductors, said at least one of said inductors in said L bank being selected for said LC filter by an N code; providing at least one capacitive (â€œCâ€ ) bank comprising a plurality of capacitors, said at least one of said capacitors in said C bank being selected for said LC filter by an M code; determining a first offset between an initial resonant frequency of said LC filter and a desired frequency for which said LC filter is tuned; determining an N code, to selectively couple at least one inductor in said L bank, based on an initial value for said M code, said desired frequency, and said first offset; selecting at least one inductor in said L bank based on said N code; determining a second offset between a resonant frequency of said LC filter and a desired frequency for which said LC filter is tuned; determining an M code, to selectively couple at least one capacitor in said C bank, based on said value for said N code, said desired frequency, and said second offset; and selecting at least one capacitor in said C bank based on said M code.