NL193712B - Modem voor het door middel van differentiële faseverschuivingsmodulatie omzetten van een digitaal ingangssignaal in een faseverschuivingsgemoduleerd uitgangssignaal. - Google Patents
Modem voor het door middel van differentiële faseverschuivingsmodulatie omzetten van een digitaal ingangssignaal in een faseverschuivingsgemoduleerd uitgangssignaal.Info
- Publication number
- NL193712B NL193712B NL9002797A NL9002797A NL193712B NL 193712 B NL193712 B NL 193712B NL 9002797 A NL9002797 A NL 9002797A NL 9002797 A NL9002797 A NL 9002797A NL 193712 B NL193712 B NL 193712B
- Authority
- NL
- Netherlands
- Prior art keywords
- phase shift
- modem
- converting
- digital input
- modulated output
- 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
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/0264—Filter sets with mutual related characteristics
- H03H17/0273—Polyphase filters
- H03H17/0275—Polyphase filters comprising non-recursive filters
- H03H17/0276—Polyphase filters comprising non-recursive filters having two phases
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/006—Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/06—Non-recursive filters
- H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
- H04M1/72502—Cordless telephones with one base station connected to a single line
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/005—Analog to digital conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/0052—Digital to analog conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/0054—Digital filters
- H03D2200/0058—Digital filters using a digital filter with interpolation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/006—Signal sampling
- H03D2200/0062—Computation of input samples, e.g. successive samples
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/0082—Quadrature arrangements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2218/00—Indexing scheme relating to details of digital filters
- H03H2218/04—In-phase and quadrature [I/Q] signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9002797A NL193712C (nl) | 1986-08-07 | 1990-12-18 | Modem voor het door middel van differentiële faseverschuivingsmodulatie omzetten van een digitaal ingangssignaal in een faseverschuivingsgemoduleerd uitgangssignaal. |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/893,916 US4825448A (en) | 1986-08-07 | 1986-08-07 | Subscriber unit for wireless digital telephone system |
US89391686 | 1986-08-07 | ||
NL8700645A NL192170C (nl) | 1986-08-07 | 1987-03-18 | Abonnee-eenheid voor een draadloos, in fase gemoduleerd tijdmultiplex digitaal telefoonstelsel. |
NL8700645 | 1987-03-18 | ||
NL9002797 | 1990-12-18 | ||
NL9002797A NL193712C (nl) | 1986-08-07 | 1990-12-18 | Modem voor het door middel van differentiële faseverschuivingsmodulatie omzetten van een digitaal ingangssignaal in een faseverschuivingsgemoduleerd uitgangssignaal. |
Publications (3)
Publication Number | Publication Date |
---|---|
NL9002797A NL9002797A (nl) | 1991-04-02 |
NL193712B true NL193712B (nl) | 2000-03-01 |
NL193712C NL193712C (nl) | 2000-07-04 |
Family
ID=26646222
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL9002797A NL193712C (nl) | 1986-08-07 | 1990-12-18 | Modem voor het door middel van differentiële faseverschuivingsmodulatie omzetten van een digitaal ingangssignaal in een faseverschuivingsgemoduleerd uitgangssignaal. |
NL9002799A NL193577C (nl) | 1986-08-07 | 1990-12-18 | Frequentie-synthesizer voor een digitaal communicatiestelsel. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL9002799A NL193577C (nl) | 1986-08-07 | 1990-12-18 | Frequentie-synthesizer voor een digitaal communicatiestelsel. |
Country Status (1)
Country | Link |
---|---|
NL (2) | NL193712C (nl) |
-
1990
- 1990-12-18 NL NL9002797A patent/NL193712C/nl not_active IP Right Cessation
- 1990-12-18 NL NL9002799A patent/NL193577C/nl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL9002797A (nl) | 1991-04-02 |
NL193712C (nl) | 2000-07-04 |
NL9002799A (nl) | 1991-04-02 |
NL193577C (nl) | 2000-02-02 |
NL193577B (nl) | 1999-10-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
DNT | Communications of changes of names of applicants whose applications have been laid open to public inspection |
Free format text: INTERDIGITAL COMMUNICATIONS CORPORATION |
|
CNR | Transfer of rights (patent application after its laying open for public inspection) |
Free format text: INTERDIGITAL TECHNOLOGY CORPORATION |
|
BC | A request for examination has been filed | ||
V4 | Discontinued because of reaching the maximum lifetime of a patent |
Effective date: 20070318 |