GB731498A - Band pass filter for decimetric and centimetric waves - Google Patents
Band pass filter for decimetric and centimetric wavesInfo
- Publication number
- GB731498A GB731498A GB2039653A GB2039653A GB731498A GB 731498 A GB731498 A GB 731498A GB 2039653 A GB2039653 A GB 2039653A GB 2039653 A GB2039653 A GB 2039653A GB 731498 A GB731498 A GB 731498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resonators
- apertures
- band
- pass
- cavities
- 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
- H01P1/207—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
731,498. Filters. STANDARD TELEPHONES & CABLES, Ltd. (Lorenz Akt.- Ges., C.). July 22, 1953, No. 20396/53. Class 40 (8). A band-pass filter comprises at least four hollow resonators arranged in cascade, adjacent resonators being inductively or capacitively coupled by apertures in the common partition walls. The oscillation resistances of the resonators and the impedances of the coupling apertures are such the group delay caused by the filter is constant over at least two thirds of the given pass band. The couplings of the cavities to one another and the dimensions of the cavities are so chosen that the attenuation in the centre of the pass-band width is zero. In one construction, Fig. 5, coaxial cylindrical resonators are coupled by apertures K. Probes E and A are provided for feeding and extracting waves. Each resonator is provided with a tuning screw VB. To enable the length of the resonators to be adjusted, they may be constructed of a number of rings separated by partitions. In a modification (Fig. 6, not shown), the rings may be secured together by clamping plates and bolts. In a further modification, Fig. 7, the resonators may have a central conductor extending partly across the inside. A compact filter, Fig. 8, may be formed by making the resonators in the form of sectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2039653A GB731498A (en) | 1953-07-22 | 1953-07-22 | Band pass filter for decimetric and centimetric waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2039653A GB731498A (en) | 1953-07-22 | 1953-07-22 | Band pass filter for decimetric and centimetric waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB731498A true GB731498A (en) | 1955-06-08 |
Family
ID=10145272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2039653A Expired GB731498A (en) | 1953-07-22 | 1953-07-22 | Band pass filter for decimetric and centimetric waves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB731498A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3512936A1 (en) * | 1985-04-11 | 1986-10-16 | Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen | Waveguide filter |
| US4653118A (en) * | 1984-04-26 | 1987-03-24 | U.S. Philips Corporation | Printed circuit transition for coupling a waveguide filter to a high frequency microstrip circuit |
| US4724408A (en) * | 1985-08-27 | 1988-02-09 | Alps Electric Co., Ltd. | Waveguide filter |
| US5051714A (en) * | 1990-03-08 | 1991-09-24 | Alcatel Na, Inc. | Modular resonant cavity, modular dielectric notch resonator and modular dielectric notch filter |
| EP0492303A1 (en) * | 1990-12-28 | 1992-07-01 | FOR.E.M. S.p.A. | System for combining high frequency signals and relevant combiner device |
| US5311157A (en) * | 1990-12-28 | 1994-05-10 | Forem S.P.A. | System for filtering signals of high and low frequency bands, and relevant implementation device |
| FR2815475A1 (en) * | 2000-10-18 | 2002-04-19 | Thomson Multimedia Sa | Waveguide filter for microwave frequency circuits, has set of discs whose external shape corresponds to base of cylinder |
| RU2713073C1 (en) * | 2019-02-12 | 2020-02-03 | Акционерное общество "Научно-производственное предприятие "Исток" имени А.И. Шокина" (АО "НПП "Исток" им. Шокина") | Device for alignment of amplitude-frequency characteristic of microwave path |
-
1953
- 1953-07-22 GB GB2039653A patent/GB731498A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4653118A (en) * | 1984-04-26 | 1987-03-24 | U.S. Philips Corporation | Printed circuit transition for coupling a waveguide filter to a high frequency microstrip circuit |
| DE3512936A1 (en) * | 1985-04-11 | 1986-10-16 | Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen | Waveguide filter |
| US4724408A (en) * | 1985-08-27 | 1988-02-09 | Alps Electric Co., Ltd. | Waveguide filter |
| US5051714A (en) * | 1990-03-08 | 1991-09-24 | Alcatel Na, Inc. | Modular resonant cavity, modular dielectric notch resonator and modular dielectric notch filter |
| EP0492303A1 (en) * | 1990-12-28 | 1992-07-01 | FOR.E.M. S.p.A. | System for combining high frequency signals and relevant combiner device |
| US5206612A (en) * | 1990-12-28 | 1993-04-27 | For.E.M. S.P.A. | System for combining high frequency signals |
| US5311157A (en) * | 1990-12-28 | 1994-05-10 | Forem S.P.A. | System for filtering signals of high and low frequency bands, and relevant implementation device |
| FR2815475A1 (en) * | 2000-10-18 | 2002-04-19 | Thomson Multimedia Sa | Waveguide filter for microwave frequency circuits, has set of discs whose external shape corresponds to base of cylinder |
| EP1199768A1 (en) * | 2000-10-18 | 2002-04-24 | THOMSON Licensing | Waveguide filter |
| US6657519B2 (en) | 2000-10-18 | 2003-12-02 | Thomson Licensing S.A. | Waveguide filter |
| RU2713073C1 (en) * | 2019-02-12 | 2020-02-03 | Акционерное общество "Научно-производственное предприятие "Исток" имени А.И. Шокина" (АО "НПП "Исток" им. Шокина") | Device for alignment of amplitude-frequency characteristic of microwave path |
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