US6346867B2
Expired / Lapsed
US
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Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof
Assignee: Murata Manufacturing Co Ltd
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Filing: 2000-12-05
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Granted: 2002-02-12
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Expires: 2020-12-05
Abstract
Abstract A conducting film is formed on a dielectric block in a dielectric waveguide resonator, and a through-hole is formed in the dielectric block. The unloaded Q is set by selecting the outside dimensions of the dielectric block. The resonance frequency is set by selecting the size and location of the through-hole as well as the outside dimensions of the dielectric block. A terminal electrode is formed on a side surface of the dielectric block. A coupling hole is formed in the dielectric block and a coupling electrode is formed on the inner surface of the coupling hole. One end of the coupling electrode is connected to the terminal electrode and the coupling electrode extends toward the conducting film formed on the opposite side surface and one end surface of the dielectric block. The above structure allows an increase in the degree of freedom in the design of the characteristics including the resonance frequency and unloaded Q of the dielectric waveguide resonator. The invention also provides a dielectric waveguide filter with a simple coupling mechanism whereby it is possible to couple to an external circuit without having to use an additional member and without electromagnetic leakage.
Inventors
- 👤 Shigeji Arakawa
- 👤 Kikuo Tsunoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:43
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/207; H01P1/208; H01P1/2088; H01P1/201; H01P1/205; H01P1/2056; H01P7/00; H01P7/04; H01P7/06; H01P7/10; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
139 words
A dielectric waveguide filter comprising: a dielectric block having an outer surface comprising first and second opposing end surfaces and first and second opposing side surfaces extending between said end surfaces, and covered with a conducting film; a terminal electrode which is isolated from said conducting film, said terminal electrode being disposed on said first side surface of said dielectric block; a hole formed in said dielectric block and a coupling electrode disposed on the inner surface of said hole, wherein one end of said coupling electrode is connected to said terminal electrode; wherein said coupling electrode extends from said first side surface, and toward said second side surface and toward said first end surface of said dielectric block; and wherein said coupling electrode is connected to said conducting film on said second side surface of said dielectric block.
Claim 2
Dependent Claim
139 words
A dielectric waveguide filter comprising: a dielectric block having an outer surface comprising first and second opposing end surfaces and first and second opposing side surfaces extending between said end surfaces, and covered with a conducting film; a terminal electrode which is isolated from said conducting film, said terminal electrode being disposed on said first side surface of said dielectric block; a hole formed in said dielectric block and a coupling electrode disposed on the inner surface of said hole, wherein one end of said coupling electrode is connected to said terminal electrode; wherein said coupling electrode extends from said first side surface, and toward said second side surface and toward said first end surface of said dielectric block; and wherein said coupling electrode is connected to said conducting film on said second side surface of said dielectric block.
Claim 3
Dependent Claim
18 words
A dielectric waveguide filter according to claim 1 , wherein said dielectric waveguide filter has TE mode resonance.
Claim 4
Dependent Claim
16 words
A dielectric waveguide filter according to claim 2 , wherein said TE mode is TE101 mode.
Claim 5
Dependent Claim
28 words
A dielectric waveguide filter according to claim 1 , wherein said coupling electrode is connected to said conducting film at said first end surface of the dielectric block.
Claim 6
Dependent Claim
30 words
A dielectric waveguide filter according to claim 4 , wherein said hole follows a non-linear path between said first side surface and said first end surface of said dielectric block.
Claim 7
Dependent Claim
16 words
A dielectric waveguide filter according to claim 5 , wherein said nonlinear path is substantially L-shaped.
Claim 8
Dependent Claim
221 words
A dielectric waveguide filter comprising: a dielectric block having an outer surface comprising first and second opposing end surfaces and first and second opposing side surfaces extending between said end surfaces, and covered with a conducting film; a terminal electrode which is isolated from said conducting film, said terminal electrode being disposed on said first side surface of said dielectric block; a hole formed in said dielectric block and a coupling electrode disposed on the inner surface of said hole, wherein one end of said coupling electrode is connected to said terminal electrode; wherein said coupling electrode extends from said first side surface, and toward said second side surface and toward said first end surface of said dielectric block; and said dielectric waveguide filter further comprising a second terminal electrode which is isolated from said conducting film, said second terminal electrode being disposed on one of said side surfaces of said dielectric block; a second hole formed in said dielectric block and a second coupling electrode disposed on the inner surface of said hole, wherein one end of said second coupling electrode is connected to said second terminal electrode; and wherein said second coupling electrode extends from said one of said side surfaces, and toward the other of said side surfaces and toward said second end surface of said dielectric block.
Claim 9
Dependent Claim
221 words
A dielectric waveguide filter comprising: a dielectric block having an outer surface comprising first and second opposing end surfaces and first and second opposing side surfaces extending between said end surfaces, and covered with a conducting film; a terminal electrode which is isolated from said conducting film, said terminal electrode being disposed on said first side surface of said dielectric block; a hole formed in said dielectric block and a coupling electrode disposed on the inner surface of said hole, wherein one end of said coupling electrode is connected to said terminal electrode; wherein said coupling electrode extends from said first side surface, and toward said second side surface and toward said first end surface of said dielectric block; and said dielectric waveguide filter further comprising a second terminal electrode which is isolated from said conducting film, said second terminal electrode being disposed on one of said side surfaces of said dielectric block; a second hole formed in said dielectric block and a second coupling electrode disposed on the inner surface of said hole, wherein one end of said second coupling electrode is connected to said second terminal electrode; and wherein said second coupling electrode extends from said one of said side surfaces, and toward the other of said side surfaces and toward said second end surface of said dielectric block.
Claim 10
Dependent Claim
31 words
A dielectric waveguide filter according to claim 1 , wherein said second coupling electrode is connected to said conducting film on the other of said side surfaces of said dielectric block.
Claim 11
Dependent Claim
38 words
A dielectric waveguide filter according to claim 8 , wherein said dielectric waveguide filter has TE-mode resonance with magnetic coupling via a coupling loop defined by said coupling electrodes and by said conducting film on said dielectric block.
Claim 12
Dependent Claim
16 words
A dielectric waveguide filter according to claim 9 , wherein said TE mode is TE101 mode.
Claim 13
Dependent Claim
29 words
A dielectric waveguide filter according to claim 8 , wherein said second coupling electrode is connected to said conducting film at said second end surface of the dielectric block.
Claim 14
Dependent Claim
34 words
A dielectric waveguide filter according to claim 11 , wherein each of said holes follows a nonlinear path between the corresponding said side surface and the corresponding said end surface of said dielectric block.
Claim 15
Dependent Claim
16 words
A dielectric waveguide filter according to claim 12 , wherein said nonlinear path is substantially L-shaped.
Claim 16
Dependent Claim
38 words
A dielectric waveguide filter according to claim 11 , wherein said dielectric waveguide filter has TE-mode resonance with magnetic coupling via a coupling loop defined by said coupling electrodes and by said conducting film on said dielectric block.
Claim 17
Dependent Claim
16 words
A dielectric waveguide filter according to claim 14 , wherein said TE mode is TE101 mode.
Claim 18
Dependent Claim
38 words
A dielectric waveguide filter according to claim 7 , wherein said dielectric waveguide filter has TE-mode resonance with magnetic coupling via a coupling loop defined by said coupling electrodes and by said conducting film on said dielectric block.
Claim 19
Dependent Claim
16 words
A dielectric waveguide filter according to claim 16 , wherein said TE mode is TE101 mode.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-02-11 | 2005-08-13 | 2006-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-11 | 2009-08-13 | 2010-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-11 | 2013-08-13 | 2014-02-12 | $7700.00 | Window Closed / Lapsed |