CA2218373C - Egalisation de compromis fixe pour un modulateur f.m. a deux ports - Google Patents
Egalisation de compromis fixe pour un modulateur f.m. a deux ports Download PDFInfo
- Publication number
- CA2218373C CA2218373C CA002218373A CA2218373A CA2218373C CA 2218373 C CA2218373 C CA 2218373C CA 002218373 A CA002218373 A CA 002218373A CA 2218373 A CA2218373 A CA 2218373A CA 2218373 C CA2218373 C CA 2218373C
- Authority
- CA
- Canada
- Prior art keywords
- modulator
- signal
- frequency
- impulse response
- dual port
- 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 - Fee Related
Links
- 230000009977 dual effect Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002411 adverse Effects 0.000 abstract description 2
- 101150118300 cos gene Proteins 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 101100234408 Danio rerio kif7 gene Proteins 0.000 description 3
- 101100221620 Drosophila melanogaster cos gene Proteins 0.000 description 3
- 101100398237 Xenopus tropicalis kif11 gene Proteins 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- XUKUURHRXDUEBC-KAYWLYCHSA-N Atorvastatin Chemical compound C=1C=CC=CC=1C1=C(C=2C=CC(F)=CC=2)N(CC[C@@H](O)C[C@@H](O)CC(O)=O)C(C(C)C)=C1C(=O)NC1=CC=CC=C1 XUKUURHRXDUEBC-KAYWLYCHSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005316 response function Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0958—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation by varying the characteristics of the voltage controlled oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Networks Using Active Elements (AREA)
Abstract
L'invention concerne un modulateur de fréquence à deux ports et un procédé pour éliminer les effets indésirables provoqués par des différences de phase port haut/port bas dans un modulateur de fréquence standard à deux ports. Le modulateur de fréquence comprend un étage de filtration inverse couplé à l'entrée d'un étage modulateur comprenant un premier chemin de traitement par le port haut pour traiter les composantes hautes fréquences d'un signal de modulation et un second chemin de traitement par le port bas pour traiter les composantes basses fréquences du signal de modulation. Les sorties des chemins haut et bas sont couplées à des ports séparés d'un oscillateur commandé en tension. La réponse impulsionelle du filtre inverse est conçue pour être l'inverse de la réponse impulsionnelle de l'étage modulateur. Le filtre fonctionne pour contrecarrer les effets néfastes provoqués par la différence du délai dans les trajets de traitement haut et bas de l'étage modulateur, si bien que la réponse globale du modulateur de fréquence à deux ports est améliorée de manière appréciable.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/423,951 US5515013A (en) | 1995-04-18 | 1995-04-18 | Fixed compromise equalization for a dual port FM modulator |
| US08/423,951 | 1995-04-18 | ||
| PCT/CA1996/000248 WO1996033553A1 (fr) | 1995-04-18 | 1996-04-18 | Egalisation de compromis fixe pour un modulateur f.m. a deux ports |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2218373A1 CA2218373A1 (fr) | 1996-10-24 |
| CA2218373C true CA2218373C (fr) | 2007-08-21 |
Family
ID=38434571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002218373A Expired - Fee Related CA2218373C (fr) | 1995-04-18 | 1996-04-18 | Egalisation de compromis fixe pour un modulateur f.m. a deux ports |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2218373C (fr) |
-
1996
- 1996-04-18 CA CA002218373A patent/CA2218373C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2218373A1 (fr) | 1996-10-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |