GB1237617A - Notch filter - Google Patents
Notch filterInfo
- Publication number
- GB1237617A GB1237617A GB43059/69A GB4305969A GB1237617A GB 1237617 A GB1237617 A GB 1237617A GB 43059/69 A GB43059/69 A GB 43059/69A GB 4305969 A GB4305969 A GB 4305969A GB 1237617 A GB1237617 A GB 1237617A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lines
- slab
- dissipative
- terminations
- accommodated
- 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.)
- Expired
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
- H01P1/215—Frequency-selective devices, e.g. filters using ferromagnetic material
- H01P1/218—Frequency-selective devices, e.g. filters using ferromagnetic material the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
1,237,617. Filters. RCA. CORPORATION. 29 Aug., 1969 [6 Sept., 1968], No. 43059/69. Heading H1W. A notch filter for use in the MHz and GHz ranges comprises transmission lines which intersect in the vicinity of a gyromagnetic element. As shown, strip lines 16, 32, which share a common ground plane, pass respectively above and below a spherical element 36, of e.g. YIG, which is magnetically polarized in a direction normal to the plane of the strip lines. Line 16 is provided with signal terminals 24, 26 and line 32 with dissipative terminations 33. Both lines are narrowed in the vicinity of the gyromagnetic element in order to concentrate the electric field. They may be insulated from the element. Energy in a narrow band of frequencies, dependent upon the magnetic field and the size of the element, is coupled to the dissipative terminations 33. The element 36 and the cross-over are accommodated in a circular depression 14 in a dielectric slab 10. Alternatively, they may be accommodated in a hole provided in a further slab positioned above the slab 10.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75795168A | 1968-09-06 | 1968-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1237617A true GB1237617A (en) | 1971-06-30 |
Family
ID=25049859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB43059/69A Expired GB1237617A (en) | 1968-09-06 | 1969-08-29 | Notch filter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3594666A (en) |
| DE (1) | DE1944960C3 (en) |
| FR (1) | FR2017539A1 (en) |
| GB (1) | GB1237617A (en) |
| NL (1) | NL6913571A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131628A (en) * | 1982-12-03 | 1984-06-20 | Raytheon Co | Magnetically tuned resonant circuit |
| GB2131627A (en) * | 1982-12-03 | 1984-06-20 | Raytheon Co | A magnetically tuned resonant circuit |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4600906A (en) * | 1982-12-03 | 1986-07-15 | Raytheon Company | Magnetically tuned resonant circuit wherein magnetic field is provided by a biased conductor on the circuit support structure |
| US5317289A (en) * | 1992-02-14 | 1994-05-31 | Uniden Corporation | Frequency-fluctuating interference removed receiver |
| US5223807A (en) * | 1992-02-14 | 1993-06-29 | Uniden Corporation | Frequency-fluctuating interference removed receiver |
| GB0902634D0 (en) | 2009-02-18 | 2009-04-01 | Reaxa Ltd | Microencapsulated catalyst |
| US20160145464A1 (en) | 2013-07-25 | 2016-05-26 | Omg Uk Technology Limited | Encapsulated catalysts |
| JP6938514B2 (en) | 2016-01-14 | 2021-09-22 | アイエスピー インヴェストメンツ エルエルシー | Microcapsules whose shell is fragile and how to adjust and use them |
| CN114744387A (en) * | 2022-05-13 | 2022-07-12 | 成都威频科技有限公司 | YIG tunable band-stop filter of 3GHz-8GHz |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3013229A (en) * | 1958-11-17 | 1961-12-12 | Bell Telephone Labor Inc | Gyromagnetic microwave filter devices |
| US3016495A (en) * | 1958-12-05 | 1962-01-09 | Bell Telephone Labor Inc | Magnetostatic microwave devices |
| US3368169A (en) * | 1964-05-08 | 1968-02-06 | Stanford Research Inst | Tunable bandpass filter |
| US3400343A (en) * | 1965-02-23 | 1968-09-03 | Physical Electronics Lab | Tunable bandpass filter |
| US3353119A (en) * | 1966-02-15 | 1967-11-14 | Loral Corp | Device for limiting the power level of signals occurring within at least one preselected passband of a wider frequency band |
-
1968
- 1968-09-06 US US757951A patent/US3594666A/en not_active Expired - Lifetime
-
1969
- 1969-08-29 GB GB43059/69A patent/GB1237617A/en not_active Expired
- 1969-09-04 DE DE1944960A patent/DE1944960C3/en not_active Expired
- 1969-09-05 NL NL6913571A patent/NL6913571A/xx unknown
- 1969-09-05 FR FR6930384A patent/FR2017539A1/fr not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131628A (en) * | 1982-12-03 | 1984-06-20 | Raytheon Co | Magnetically tuned resonant circuit |
| GB2131627A (en) * | 1982-12-03 | 1984-06-20 | Raytheon Co | A magnetically tuned resonant circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2017539A1 (en) | 1970-05-22 |
| DE1944960B2 (en) | 1977-09-08 |
| DE1944960A1 (en) | 1970-10-01 |
| US3594666A (en) | 1971-07-20 |
| DE1944960C3 (en) | 1978-04-27 |
| NL6913571A (en) | 1970-03-10 |
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