GB1499774A - Filter chain - Google Patents
Filter chainInfo
- Publication number
- GB1499774A GB1499774A GB13547/75A GB1354775A GB1499774A GB 1499774 A GB1499774 A GB 1499774A GB 13547/75 A GB13547/75 A GB 13547/75A GB 1354775 A GB1354775 A GB 1354775A GB 1499774 A GB1499774 A GB 1499774A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pair
- dual
- resonance frequency
- duals
- april
- 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
- 230000009977 dual effect Effects 0.000 abstract 7
- 230000008878 coupling Effects 0.000 abstract 4
- 238000010168 coupling process Methods 0.000 abstract 4
- 238000005859 coupling reaction Methods 0.000 abstract 4
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
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE7405011,A NL174791C (nl) | 1974-04-11 | 1974-04-11 | Piezo-elektrisch filter met een zeer smalle doorlaatband. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1499774A true GB1499774A (en) | 1978-02-01 |
Family
ID=19821162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13547/75A Expired GB1499774A (en) | 1974-04-11 | 1975-04-02 | Filter chain |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5830767B2 (de) |
DE (1) | DE2514403C2 (de) |
FR (1) | FR2275068A1 (de) |
GB (1) | GB1499774A (de) |
NL (1) | NL174791C (de) |
SE (1) | SE408513B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52101337U (de) * | 1976-01-28 | 1977-08-01 | ||
DE3872217D1 (de) * | 1987-08-12 | 1992-07-23 | Avl Verbrennungskraft Messtech | Einrichtung zur einbringung des kraftstoffes in den brennraum einer brennkraftmaschine. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3585537A (en) * | 1969-02-10 | 1971-06-15 | Bell Telephone Labor Inc | Electric wave filters |
US3716808A (en) * | 1971-05-20 | 1973-02-13 | Motorola Inc | Bandpass filter including monolithic crystal elements with resonating portions selected for symmetrical response |
FR2186175A5 (de) * | 1972-05-24 | 1974-01-04 | Thomson Csf |
-
1974
- 1974-04-11 NL NLAANVRAGE7405011,A patent/NL174791C/xx not_active IP Right Cessation
-
1975
- 1975-04-02 GB GB13547/75A patent/GB1499774A/en not_active Expired
- 1975-04-02 DE DE2514403A patent/DE2514403C2/de not_active Expired
- 1975-04-09 JP JP50042385A patent/JPS5830767B2/ja not_active Expired
- 1975-04-10 SE SE7504134A patent/SE408513B/xx unknown
- 1975-04-11 FR FR7511444A patent/FR2275068A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2514403C2 (de) | 1984-12-20 |
SE408513B (sv) | 1979-06-11 |
SE7504134L (sv) | 1975-10-13 |
NL174791B (nl) | 1984-03-01 |
NL7405011A (nl) | 1975-10-14 |
DE2514403A1 (de) | 1976-03-04 |
JPS50138754A (de) | 1975-11-05 |
FR2275068B1 (de) | 1977-04-15 |
FR2275068A1 (fr) | 1976-01-09 |
JPS5830767B2 (ja) | 1983-07-01 |
NL174791C (nl) | 1984-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |