| 摘要 |
PURPOSE: A narrow-band signal eliminator using a capacitor is provided to filter a jamming signal in the receiving terminal of a cellular phone by forming a filter with n number of inductors and capacitors, selecting any one among the n number of capacitors and inductors and thereby forming a variable inductor and a variable capacitor. CONSTITUTION: The device uses a filter to improve a channel division, a single tone and an IMD(Intermodulation Distortion) characteristic in a receiving terminal of a cellular phone. Any one capacitor among a plurality of capacitors located parallel to each other is selected and the capacitance(CT) of the selected capacitor is varied to form an inductor. Therefore, the narrow-band signal eliminator obtains the efficiency of an inductor by using only capacitors and uses a LC filter without the previous SAW filter, thereby reducing the manufacturing cost. |
