NL193577B - Frequency synthesizer for a digital communication system. - Google Patents

Frequency synthesizer for a digital communication system.

Info

Publication number: NL193577B
Authority: NL; Netherlands
Prior art keywords: communication system; frequency synthesizer; digital communication; synthesizer; digital
Prior art date: 1986-08-07

Application number

NL9002799A

Other languages

Dutch (nl)

Other versions

NL193577C (en

NL9002799A (en

Original Assignee

Interdigital Tech Corp

Priority date (The priority date 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 date listed.)

1986-08-07

Filing date

1990-12-18

Publication date

1999-10-01

1986-08-07 Priority claimed from US06/893,916 external-priority patent/US4825448A/en

1990-12-18 Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp

1990-12-18 Priority to NL9002799A priority Critical patent/NL193577C/en

1991-04-02 Publication of NL9002799A publication Critical patent/NL9002799A/en

1999-10-01 Publication of NL193577B publication Critical patent/NL193577B/en

2000-02-02 Application granted granted Critical

2000-02-02 Publication of NL193577C publication Critical patent/NL193577C/en

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)

NL9002799A 1986-08-07 1990-12-18 Frequency synthesizer for a digital communication system. NL193577C (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
NL9002799A NL193577C (en)	1986-08-07	1990-12-18	Frequency synthesizer for a digital communication system.

Applications Claiming Priority (6)

Application Number	Priority Date	Filing Date	Title
US89391686		1986-08-07
US06/893,916 US4825448A (en)	1986-08-07	1986-08-07	Subscriber unit for wireless digital telephone system
NL8700645A NL192170C (en)	1986-08-07	1987-03-18	Subscriber unit for a wireless, phase-modulated time-division multiplex digital telephone system.
NL8700645		1987-03-18
NL9002799		1990-12-18
NL9002799A NL193577C (en)	1986-08-07	1990-12-18	Frequency synthesizer for a digital communication system.

Publications (3)

Publication Number	Publication Date
NL9002799A NL9002799A (en)	1991-04-02
NL193577B true NL193577B (en)	1999-10-01
NL193577C NL193577C (en)	2000-02-02

Family

ID=26646222

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
NL9002799A NL193577C (en)	1986-08-07	1990-12-18	Frequency synthesizer for a digital communication system.
NL9002797A NL193712C (en)	1986-08-07	1990-12-18	Modem for converting a digital input signal into a phase shift modulated output signal by means of differential phase shift modulation.

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
NL9002797A NL193712C (en)	1986-08-07	1990-12-18	Modem for converting a digital input signal into a phase shift modulated output signal by means of differential phase shift modulation.

Country Status (1)

Country	Link
NL (2)	NL193577C (en)

1990
- 1990-12-18 NL NL9002799A patent/NL193577C/en not_active IP Right Cessation
- 1990-12-18 NL NL9002797A patent/NL193712C/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
NL193712B (en)	2000-03-01
NL9002797A (en)	1991-04-02
NL193577C (en)	2000-02-02
NL9002799A (en)	1991-04-02
NL193712C (en)	2000-07-04

Publication	Publication Date	Title
NO890057D0 (en)	1989-01-06	UNDERWATER STATION FOR PUMPING A BROWN STREAM.
DE3750810D1 (en)	1995-01-12	Frequency synthesizer.
DE3789135D1 (en)	1994-03-31	Radio telephone system.
NO890378L (en)	1989-07-31	CENTRAL FREQUENCY HOW SOLUTION DIGITAL FASELOAD SLOEFE.
DE3885157D1 (en)	1993-12-02	Radiotelephone system.
DK428688A (en)	1989-02-05	DIGITAL, INTERACTIVE COMMUNICATION SYSTEM
DE68912407D1 (en)	1994-03-03	Radio telephone set.
NO891255D0 (en)	1989-03-22	RADIO TELECOMMUNICATIONS SYSTEM.
DE3751327D1 (en)	1995-07-06	Radio system.
NO890135D0 (en)	1989-01-12	MOBILE COMMUNICATION SYSTEM.
DE3884077D1 (en)	1993-10-21	Radio telephone system.
DE69016308D1 (en)	1995-03-09	Direct digital frequency synthesizer.
DE3786222D1 (en)	1993-07-22	TELEPHONE SYSTEM.
DE68914805D1 (en)	1994-05-26	Digital frequency divider.
DE3781934D1 (en)	1992-11-05	CORDLESS TELEPHONE SYSTEM.
DE3853563D1 (en)	1995-05-18	Digital frequency synthesizer.
NO911389L (en)	1991-12-16	A frequency synthesizer.
DE3785823D1 (en)	1993-06-17	CORDLESS TELEPHONE SYSTEM.
DE3763446D1 (en)	1990-08-02	SYNCHRONIZING RING.
BR8701214A (en)	1987-12-29	SYNTHESIZER FOR A RADIO-DIFFUSION TELEPHONE SYSTEM
DE3673631D1 (en)	1990-09-27	DIGITAL MOBILE RADIO SYSTEM.
FI894427L (en)	1990-03-23	DIGITAL FREQUENCY GENERATOR.
GB2199287B (en)	1991-09-11	A ticketing system.
DE3786644D1 (en)	1993-08-26	INTERFERENCE-SENSITIVE DIGITAL MODULATION RECEIVER.
NO913197D0 (en)	1991-08-15	A frequency synthesizer.

Legal Events

Date	Code	Title	Description
1993-09-01	BA	A request for search or an international-type search has been filed
1993-12-01	BB	A search report has been drawn up
1994-01-17	DNT	Communications of changes of names of applicants whose applications have been laid open to public inspection	Free format text: INTERDIGITAL COMMUNICATIONS CORPORATION
1994-02-16	CNR	Transfer of rights (patent application after its laying open for public inspection)	Free format text: INTERDIGITAL TECHNOLOGY CORPORATION
1994-05-02	BC	A request for examination has been filed
2007-05-01	V4	Discontinued because of reaching the maximum lifetime of a patent	Effective date: 20070318