GB732507A - Improvements in or relating to electric impedance networks - Google Patents
Improvements in or relating to electric impedance networksInfo
- Publication number
- GB732507A GB732507A GB683853A GB683853A GB732507A GB 732507 A GB732507 A GB 732507A GB 683853 A GB683853 A GB 683853A GB 683853 A GB683853 A GB 683853A GB 732507 A GB732507 A GB 732507A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- resonator
- filter
- coupling
- line
- 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
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/202—Coaxial filters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
732,507. Very-high-frequency filters. STANDARD TELEPHONES & CABLES, Ltd. March 12, 1953, No. 6838/53. Class 40 (8). A very-high-frequency filter comprises a number of coaxial half-wavelength resonators 1, 2, 3, &c.,' each coupled to a transverse structure 10 by means of which connection can be made to a line, in which the distance between the structure 10 and the electrical end 8 of each resonates farthest from the structure 10 determines the mid-frequency of the filter and the distance between the structure 10 and the nearer electrical end 7 of each resonator determines the band width. The electrical ends 7, 8 of either branch of each resonator comprise movable bridges by which the necessary adjustments for band width and mid-frequency, which are interdependent, may be made after the filter has been set. up The frequency-adjusting bridge of the centre resonator may have to be set a little nearer the coupling point than the other bridges. At frequencies below 200 Mc/s. where the size of a half-wavelength resonator is rather large, the length may be reduced by lumped capacitative loading. The coupling between the filter and the line is preferably inductive and consists of a short length of coaxial line or of a conductor 9. The tuning range may be varied by means of interchangeable conductors 9 of different diameters. Below 200 Mc/s. the coupling may be capacitative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB683853A GB732507A (en) | 1953-03-12 | 1953-03-12 | Improvements in or relating to electric impedance networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB683853A GB732507A (en) | 1953-03-12 | 1953-03-12 | Improvements in or relating to electric impedance networks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB732507A true GB732507A (en) | 1955-06-22 |
Family
ID=9821676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB683853A Expired GB732507A (en) | 1953-03-12 | 1953-03-12 | Improvements in or relating to electric impedance networks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB732507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0766333A1 (en) * | 1995-09-26 | 1997-04-02 | Solitra Oy | Coaxial resonator filter and method for manufacturing the same |
-
1953
- 1953-03-12 GB GB683853A patent/GB732507A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0766333A1 (en) * | 1995-09-26 | 1997-04-02 | Solitra Oy | Coaxial resonator filter and method for manufacturing the same |
| US5892419A (en) * | 1995-09-26 | 1999-04-06 | Adc Solitra Oy | Integral resonators for a filter and a method for manufacturing thereof |
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