JPS57155803A - Band pass filter - Google Patents
Band pass filterInfo
- Publication number
- JPS57155803A JPS57155803A JP4194181A JP4194181A JPS57155803A JP S57155803 A JPS57155803 A JP S57155803A JP 4194181 A JP4194181 A JP 4194181A JP 4194181 A JP4194181 A JP 4194181A JP S57155803 A JPS57155803 A JP S57155803A
- Authority
- JP
- Japan
- Prior art keywords
- coupling
- sides
- mode
- adjusting screws
- constitution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE:To suppress the unnecessary circular TM mode resonance due to the disturbance of electromagnetic field at coupling section, by projecting coupling screws toward a direction in parallel with the electric field from an H plane at both sides of a rectangular waveguide. CONSTITUTION:Coupling adjusting screws 10, 20 and 12, 21 projected toward the direction of the electric field of a rectangular waveguide are provided at an H plane at both sides of input and output rectangular waveguides 8 and 9 around coupling holes 5 and 7 between the cavity of TEomn mode resonators 1 and 2 and input and output rectangular waveguides 8 and 9. With this constitution, the phase of TM mode generated near the coupling adjusting screws 19, 20 or 12, 21 at both sides is opposite with each other, the unnecessary resonance of the TM mode can be suppressed at a whole by controlling the insertion length of the coupling adjusting screws 10, 20 (or 12, 21) at both sides with a good balance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4194181A JPS57155803A (en) | 1981-03-23 | 1981-03-23 | Band pass filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4194181A JPS57155803A (en) | 1981-03-23 | 1981-03-23 | Band pass filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57155803A true JPS57155803A (en) | 1982-09-27 |
JPS625530B2 JPS625530B2 (en) | 1987-02-05 |
Family
ID=12622235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4194181A Granted JPS57155803A (en) | 1981-03-23 | 1981-03-23 | Band pass filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57155803A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4692723A (en) * | 1985-07-08 | 1987-09-08 | Ford Aerospace & Communications Corporation | Narrow bandpass dielectric resonator filter with mode suppression pins |
JPH0214601A (en) * | 1988-02-16 | 1990-01-18 | Hughes Aircraft Co | Teeth coupling iris |
CN100364169C (en) * | 2005-11-28 | 2008-01-23 | 浙江三维通信股份有限公司 | Cavity filter with adjustable capacitive coupling structure |
-
1981
- 1981-03-23 JP JP4194181A patent/JPS57155803A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4692723A (en) * | 1985-07-08 | 1987-09-08 | Ford Aerospace & Communications Corporation | Narrow bandpass dielectric resonator filter with mode suppression pins |
JPH0214601A (en) * | 1988-02-16 | 1990-01-18 | Hughes Aircraft Co | Teeth coupling iris |
CN100364169C (en) * | 2005-11-28 | 2008-01-23 | 浙江三维通信股份有限公司 | Cavity filter with adjustable capacitive coupling structure |
Also Published As
Publication number | Publication date |
---|---|
JPS625530B2 (en) | 1987-02-05 |
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