GB1561643A - Phaseshift-keying modulators - Google Patents
Phaseshift-keying modulators Download PDFInfo
- Publication number
- GB1561643A GB1561643A GB3261275A GB3261275A GB1561643A GB 1561643 A GB1561643 A GB 1561643A GB 3261275 A GB3261275 A GB 3261275A GB 3261275 A GB3261275 A GB 3261275A GB 1561643 A GB1561643 A GB 1561643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- modulator
- shift
- inverter
- high frequency
- 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
- 239000013598 vector Substances 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
- H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3261275A GB1561643A (en) | 1975-08-05 | 1975-08-05 | Phaseshift-keying modulators |
| DE19752548241 DE2548241C3 (de) | 1975-08-05 | 1975-10-28 | Phasenumtast-Modulator |
| IT6895276A IT1070638B (it) | 1975-08-05 | 1976-08-04 | Modulatore di selezione dello sfasa mento di impulsi per sistemi di telecomunicazione |
| FR7623790A FR2320666A1 (fr) | 1975-08-05 | 1976-08-04 | Modulateur de phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3261275A GB1561643A (en) | 1975-08-05 | 1975-08-05 | Phaseshift-keying modulators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1561643A true GB1561643A (en) | 1980-02-27 |
Family
ID=10341343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3261275A Expired GB1561643A (en) | 1975-08-05 | 1975-08-05 | Phaseshift-keying modulators |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2320666A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1561643A (enrdf_load_stackoverflow) |
| IT (1) | IT1070638B (enrdf_load_stackoverflow) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL294442A (enrdf_load_stackoverflow) * | 1963-06-21 | |||
| FR1381314A (fr) * | 1963-08-23 | 1964-12-14 | Telecomm Radioelectriques & Te | Procédés de synchronisation pour transmettre des signaux digitaux à travers des dispositifs de transmission non synchrone |
-
1975
- 1975-08-05 GB GB3261275A patent/GB1561643A/en not_active Expired
-
1976
- 1976-08-04 IT IT6895276A patent/IT1070638B/it active
- 1976-08-04 FR FR7623790A patent/FR2320666A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2548241B2 (de) | 1977-06-02 |
| IT1070638B (it) | 1985-04-02 |
| FR2320666B1 (enrdf_load_stackoverflow) | 1981-11-20 |
| FR2320666A1 (fr) | 1977-03-04 |
| DE2548241A1 (de) | 1977-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |