BE900247A - FILTER ARRANGEMENT. - Google Patents
FILTER ARRANGEMENT.Info
- Publication number
- BE900247A BE900247A BE0/213404A BE213404A BE900247A BE 900247 A BE900247 A BE 900247A BE 0/213404 A BE0/213404 A BE 0/213404A BE 213404 A BE213404 A BE 213404A BE 900247 A BE900247 A BE 900247A
- Authority
- BE
- Belgium
- Prior art keywords
- frequency
- zero
- filter arrangement
- signals
- frequencies
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0283—Filters characterised by the filter structure
- H03H17/0286—Combinations of filter structures
Abstract
L'agencement de filtres traite des signaux à des première et seconde fréquences f1 et f2 dans trois filtres numériques du second ordre avec des coefficients de filtre a, A et b connectés en cascade de manière à produire des signaux F1, F2 et F3 en fonction du signal d'entrée et desdits coefficients a, A et b. Ces signaux sont caractéristiques respectivement de filtres avec un signal de résonateur à gain fini offrant une fréquence centrale à la fréquence f1 et un zéro à la fréquence f2, une fréquence centrale à la fréquence f2 et un zéro à la fréqucne f2 et un zéro à la fréquence f1, et un zéro aux deux fréquences f1 et f2.The filter arrangement processes signals at first and second frequencies f1 and f2 in three second-order digital filters with filter coefficients a, A and b connected in cascade so as to produce signals F1, F2 and F3 in function of the input signal and said coefficients a, A and b. These signals are characteristic respectively of filters with a finite gain resonator signal offering a central frequency at the frequency f1 and a zero at the frequency f2, a central frequency at the frequency f2 and a zero at the frequency f2 and a zero at the frequency f1, and a zero at the two frequencies f1 and f2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08321854A GB2145306B (en) | 1983-08-13 | 1983-08-13 | Filter arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE900247A true BE900247A (en) | 1984-11-16 |
Family
ID=10547283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE0/213404A BE900247A (en) | 1983-08-13 | 1984-07-27 | FILTER ARRANGEMENT. |
Country Status (11)
| Country | Link |
|---|---|
| AU (1) | AU568386B2 (en) |
| BE (1) | BE900247A (en) |
| DK (1) | DK388084A (en) |
| FR (1) | FR2550670B1 (en) |
| GB (1) | GB2145306B (en) |
| GR (1) | GR80052B (en) |
| IT (1) | IT1174648B (en) |
| MT (1) | MTP951B (en) |
| PT (1) | PT79071B (en) |
| ZA (1) | ZA845147B (en) |
| ZW (1) | ZW11284A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2187064B (en) * | 1986-02-21 | 1990-01-31 | Stc Plc | Adaptive filter |
| US6107898A (en) * | 1998-04-30 | 2000-08-22 | The United State Of America As Represented By The Secretary Of The Navy | Microwave channelized bandpass filter having two channels |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1541660A1 (en) * | 1966-09-07 | 1970-10-22 | Telefunken Patent | Filter arrangement for generating a residual sideband signal with a Nyquist edge |
| US4524423A (en) * | 1981-11-06 | 1985-06-18 | Rca Corporation | Digital signal separation filters |
-
1983
- 1983-08-13 GB GB08321854A patent/GB2145306B/en not_active Expired
-
1984
- 1984-07-04 ZA ZA845147A patent/ZA845147B/en unknown
- 1984-07-16 ZW ZW112/84A patent/ZW11284A1/en unknown
- 1984-07-23 AU AU30938/84A patent/AU568386B2/en not_active Ceased
- 1984-07-27 BE BE0/213404A patent/BE900247A/en not_active IP Right Cessation
- 1984-08-07 GR GR80052A patent/GR80052B/en unknown
- 1984-08-10 FR FR8412717A patent/FR2550670B1/en not_active Expired
- 1984-08-10 IT IT22311/84A patent/IT1174648B/en active
- 1984-08-10 MT MT951A patent/MTP951B/en unknown
- 1984-08-10 DK DK388084A patent/DK388084A/en not_active Application Discontinuation
- 1984-08-13 PT PT79071A patent/PT79071B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT8422311A0 (en) | 1984-08-10 |
| DK388084A (en) | 1985-02-14 |
| GR80052B (en) | 1984-12-12 |
| MTP951B (en) | 1985-07-29 |
| GB2145306B (en) | 1987-05-07 |
| GB8321854D0 (en) | 1983-09-14 |
| AU568386B2 (en) | 1987-12-24 |
| AU3093884A (en) | 1985-02-21 |
| PT79071B (en) | 1986-06-09 |
| FR2550670B1 (en) | 1987-11-20 |
| GB2145306A (en) | 1985-03-20 |
| DK388084D0 (en) | 1984-08-10 |
| FR2550670A1 (en) | 1985-02-15 |
| IT1174648B (en) | 1987-07-01 |
| PT79071A (en) | 1984-09-01 |
| ZW11284A1 (en) | 1984-11-28 |
| ZA845147B (en) | 1985-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: GEC PLESSEY TELECOMMUNICATIONS LTD Effective date: 19900731 |