Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1997-04-15
2000-06-20
Lee, Benny
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333207, 333223, 29600, H01P 1201, H01P 1100
Patent
active
060782307
ABSTRACT:
A method of adjusting characteristics of a dielectric filter having integral electromagnetic shielding, the dielectric filter comprises a dielectric body having an outer surface including first and second end surfaces and side surfaces extending between the first and second end surfaces; an external conductor disposed on the outer surface of the dielectric body and providing integral electromagnetic shielding of the dielectric filter; at least one hole extending through the dielectric body between the first and second end surfaces; a respective pair of internal conductors provided in the at least one hole and conductively connected to the external conductor at respective ends of the hole, a respective non-conductive portion in the hole being spaced from both ends and thereby separating the pair of internal conductors and defining a respective capacitance between the pair of internal conductors; and signal input and output electrodes provided on the outer surface of the dielectric body and electrically isolated from the external conductor. According to the method, a portion of the dielectric material is removed, for example by grinding, to form the respective non-conductive portion in the hole. The hole may have a changing diameter along its length, due to a hollow formed in one end surface, the non-conductive portion being adjacent to the hollow; or due to a narrowed throttle portion formed at or near the end surface, the non-conductive portion being formed on the throttle portion. Alternatively, the hole may have a substantially constant cross-section, and the non-conductive portion may be substantially flush with the inner surface of the hole. The dielectric body may be regular in shape or may have a side surface with portions spaced from the resonator hole by different respective distances.
REFERENCES:
patent: 4431977 (1984-02-01), Sokola et al.
patent: 4523162 (1985-06-01), Johnson
patent: 4757284 (1988-07-01), Ueno
patent: 4937542 (1990-06-01), Nakatuka
patent: 4965094 (1990-10-01), Fuchs
patent: 5045824 (1991-09-01), Metroka
patent: 5103197 (1992-04-01), Turunen et al.
patent: 5130683 (1992-07-01), Agahi-Kesheh et al.
patent: 5146193 (1992-09-01), Sokola
patent: 5175520 (1992-12-01), Inoue
patent: 5302924 (1994-04-01), Jantunen et al.
patent: 5572174 (1996-11-01), Kitaichi et al.
Patent Abstracts of Japan, vol. 13, No. 522 (E-849) (3870), Abstract No. 12-12001, Nov. 21, 1989.
Patent Abstracts of Japan, vol. 11, No. 286 (E-541) (2733), Abstract No. 62-85502, Sep. 16, 1987.
Patent Abstracts of Japan, vol. 8, No. 256 (E-280) (1693), Abstract No. 59-128801, Nov. 22, 1984.
Patent Abstracts of Japan, vol. 6, No. 72, (E-105) (950), Abstract No. 57-13801, May 7, 1982.
Kato Hideyuki
Kitaichi Yukihiro
Matsumoto Haruo
Mori Hisashi
Tada Hitoshi
Lee Benny
Murata Manufacturing Co. Ltd.
LandOfFree
Characteristic adjusting method for dielectric filter using a gr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Characteristic adjusting method for dielectric filter using a gr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristic adjusting method for dielectric filter using a gr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1856419