GB1284018A - Method of and apparatus for producing and filtering out harmonics of a fundamental frequency - Google Patents
Method of and apparatus for producing and filtering out harmonics of a fundamental frequencyInfo
- Publication number
- GB1284018A GB1284018A GB38415/70A GB3841570A GB1284018A GB 1284018 A GB1284018 A GB 1284018A GB 38415/70 A GB38415/70 A GB 38415/70A GB 3841570 A GB3841570 A GB 3841570A GB 1284018 A GB1284018 A GB 1284018A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- fundamental frequency
- harmonic
- carrier
- producing
- 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
- 238000000034 method Methods 0.000 title abstract 3
- 238000001914 filtration Methods 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/06—Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Manipulation Of Pulses (AREA)
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
Abstract
1284018 Carrier frequency generators; frequency multipliers LICENTIA PATENTVERWALTUNGS-GmbH 10 Aug 1970 [12 Aug 1969] 38415/70 Headings H3T and H4R In a method of producing a harmonic of a fundamental frequency, e.g. for use as a carrier frequency in a carrier frequency system, the fundamental frequency is converted to a square wave or pulse stream of the same fundamental frequency and applied to a selection device, e.g. a tuned circuit, tuned to the desired harmonic and which shifts the phases of the adjacent harmonics in opposite directions by the same amount so that they appear as modulation, at the fundamental frequency, of a carrier at the desired harmonic frequency. The resulting signal is then converted to a square wave at the required frequency by amplitude limiting, triggering, or gating; which removes the modulation. The process may be repeated to improve the purity of the required frequency. The harmonic selector is suitable for realization as a printed or integrated circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691940903 DE1940903C2 (en) | 1969-08-12 | 1969-08-12 | Method for generating and filtering harmonics of a fundamental frequency, in particular frequencies for carrier frequency systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1284018A true GB1284018A (en) | 1972-08-02 |
Family
ID=5742539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38415/70A Expired GB1284018A (en) | 1969-08-12 | 1970-08-10 | Method of and apparatus for producing and filtering out harmonics of a fundamental frequency |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1940903C2 (en) |
| FR (1) | FR2056872A5 (en) |
| GB (1) | GB1284018A (en) |
| SE (1) | SE353000B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2688848B1 (en) * | 1992-03-18 | 1994-06-17 | Gkn Automotive Ag | SLIDING TYPE ARTICULATED TRANSMISSION JOINT. |
-
1969
- 1969-08-12 DE DE19691940903 patent/DE1940903C2/en not_active Expired
-
1970
- 1970-08-07 SE SE10859/70A patent/SE353000B/xx unknown
- 1970-08-10 GB GB38415/70A patent/GB1284018A/en not_active Expired
- 1970-08-11 FR FR7029598A patent/FR2056872A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1940903C2 (en) | 1971-10-21 |
| SE353000B (en) | 1973-01-15 |
| DE1940903B1 (en) | 1971-03-11 |
| FR2056872A5 (en) | 1971-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS53117477A (en) | Display system | |
| JPS5279862A (en) | Phase synchronous device | |
| JPS52141552A (en) | Demodulating of angle-modulated wave signal | |
| GB1284018A (en) | Method of and apparatus for producing and filtering out harmonics of a fundamental frequency | |
| JPS5377102A (en) | Fm stereo demodulating circuit | |
| GB1435874A (en) | Generator for controlling a transducer | |
| JPS558192A (en) | Carrier wave extracting circuit | |
| JPS52109811A (en) | Amplitude phase modulation communication system | |
| ES379323A1 (en) | Carrier frequency generator | |
| JPS53145453A (en) | Frequency band division filter | |
| JPS5275163A (en) | Function generator of amplitude modulation | |
| JPS5278355A (en) | Frequency discriminator | |
| JPS54130860A (en) | High frequency generator | |
| JPS5520007A (en) | Interlace circuit | |
| JPS5264059A (en) | Method of generating swirl flow in liquid by ultrasonic wave | |
| JPS5443415A (en) | Pattern signal generator | |
| JPS53145452A (en) | Frequency band division filter | |
| JPS5480030A (en) | Process circuit for carrier chrominance signal | |
| JPS54141551A (en) | Demodulation circuit for frequency modulation wave | |
| JPS548830A (en) | Inverter | |
| JPS5395135A (en) | Preparation of copper foil laminated product by high speed electrolytic method and its device | |
| JPS5222850A (en) | Function generating device in digital method | |
| JPS5421829A (en) | Simulating system of acoustic signals | |
| JPS5515070A (en) | Phase angle detection unit | |
| JPS5277783A (en) | Pulse generating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |