Patent ID: 6636132
Filing Date: 2003-10-21
Classification: H01P

Abstract:
A dielectric filter comprising:a dielectric block including first and second surfaces facing to each other and a side surface disposed between said first and second surfaces, said second and side surfaces being substantially covered with a conductive material; a plurality of resonant holes extending between said first and second surfaces of said dielectric block in a substantially parallel manner and being substantially covered with said conductive material on the internal surfaces thereof to form resonator; a first conductive pattern to form an electromagnetic coupling between said resonators; input/output terminals for respectively receiving and transmitting signals from/to the outside, each of said input/output terminals including an electrode area isolated from said conductive material on the side surface of said dielectric block and for forming an electromagnetic coupling with a respective resonant holes; and at least one second conductive pattern disposed on said first surface of said dielectric block along an arrangement direction of said plurality of resonant holes and isolated from said input/output terminals, for strengthening a coupling capacitance between the adjacent resonators and forming a cross coupling capacitance between non-adjacent resonators.