GB809707A - Frequency rejection system for electro-mechanical filter - Google Patents
Frequency rejection system for electro-mechanical filterInfo
- Publication number
- GB809707A GB809707A GB3163956A GB3163956A GB809707A GB 809707 A GB809707 A GB 809707A GB 3163956 A GB3163956 A GB 3163956A GB 3163956 A GB3163956 A GB 3163956A GB 809707 A GB809707 A GB 809707A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discs
- tuned
- frequencies
- rods
- edges
- 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
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/135—Driving means, e.g. electrodes, coils for networks consisting of magnetostrictive materials
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/48—Coupling means therefor
- H03H9/50—Mechanical coupling means
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
809,707. Electromechanical filters. COLLINS RADIO CO. Oct. 17, 1956, No. 31639/56. Class 40 (8). An electromechanical filter comprises magneto-strictive input and output means and a mechanical resonant system comprising a series of coupled discs some of which are tuned to frequencies at the edge or edges of the passband of the filter in order to increase the steepness of these edges. Input and output coils 18 are housed within tubes 13, 14 which support a pair of inactive end discs 31, 32 joined by rods 33. A series of active discs 34 tuned to the mid frequency of the pass-band are supported by the rods 33 and are coupled to the input and output coils by magnetostrictive rods 30, 35 attached to the end members of the series. Between these end members and the inactive discs 31, 32 are situated one or more pairs of discs 36, 37 also supported by the rods 33. These may be tuned to frequencies # 1 , # 3 , Fig. 7, or, where there are two pairs, to frequencies # 1 , # 2 , # 3 , # 4 , Fig. 9, near the edges of the band pass. Alternatively, the discs 36, 37 may both be tuned to frequencies at one and the same edge of the band pass. A discussion of the electrical analogue of the resonant system is given in the Specification. Specifications 722,664 and 767,915 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3163956A GB809707A (en) | 1956-10-17 | 1956-10-17 | Frequency rejection system for electro-mechanical filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3163956A GB809707A (en) | 1956-10-17 | 1956-10-17 | Frequency rejection system for electro-mechanical filter |
Publications (1)
Publication Number | Publication Date |
---|---|
GB809707A true GB809707A (en) | 1959-03-04 |
Family
ID=10326174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3163956A Expired GB809707A (en) | 1956-10-17 | 1956-10-17 | Frequency rejection system for electro-mechanical filter |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB809707A (en) |
-
1956
- 1956-10-17 GB GB3163956A patent/GB809707A/en not_active Expired
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