Dielectric filter including laterally extending auxiliary through bores
Patent 5831495 Issued on November 3, 1998. Estimated Expiration Date: 
May 28, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 28, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMicrowave circuit device and method for fabrication Balanced-type dielectric filter and high frequency circuit using balanced-type dielectric filter Dielectric filter for mounting to a printed circuit board Patent #: 5528207 InventorAssigneeApplicationNo. 654411 filed on 05/28/1996US Classes:333/202, Wave filters including long line elements333/206CoaxialExaminersPrimary: Lee, BennyAttorney, Agent or FirmForeign Patent References
International ClassH01P 001/202Foreign Application Priority Data1995-05-29 JPAbstractA dielectric filter comprising a dielectric ceramic block which has at least two through bores longitudinally extended in parallel with each other each of which is provided with a resonant conductor, and two auxiliary through bores each being laterally extended from the associated through bore to both lateral side surfaces of the dielectric ceramic block and being provided with an inner conductive film on the inner peripheral surface thereof, one end of the inner conductive film in each auxiliary through bore is separated from a shield electrode provided on the outer surface of the dielectric ceramic block so as to form an open circuit end. | |
