MX9101738A - A DEVICE AND METHOD TO VARY A SIGNAL IN A TRANSCEIVER OF A TRANSCEIVER - Google Patents

A DEVICE AND METHOD TO VARY A SIGNAL IN A TRANSCEIVER OF A TRANSCEIVER

Info

Publication number
MX9101738A
MX9101738A MX9101738A MX9101738A MX9101738A MX 9101738 A MX9101738 A MX 9101738A MX 9101738 A MX9101738 A MX 9101738A MX 9101738 A MX9101738 A MX 9101738A MX 9101738 A MX9101738 A MX 9101738A
Authority
MX
Mexico
Prior art keywords
transceiver
vary
signal
Prior art date
Application number
MX9101738A
Other languages
Spanish (es)
Inventor
Stephen V Cahill
Original Assignee
Motorola Inc
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.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of MX9101738A publication Critical patent/MX9101738A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H03C3/406—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated using a feedback loop containing mixers or demodulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • 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)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Foundations (AREA)
MX9101738A 1990-10-24 1991-10-24 A DEVICE AND METHOD TO VARY A SIGNAL IN A TRANSCEIVER OF A TRANSCEIVER MX9101738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60254090A 1990-10-24 1990-10-24

Publications (1)

Publication Number Publication Date
MX9101738A true MX9101738A (en) 1992-06-05

Family

ID=24411752

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9101738A MX9101738A (en) 1990-10-24 1991-10-24 A DEVICE AND METHOD TO VARY A SIGNAL IN A TRANSCEIVER OF A TRANSCEIVER

Country Status (6)

Country Link
JP (1) JPH05503408A (en)
CA (1) CA2069476C (en)
FR (1) FR2669165B1 (en)
GB (1) GB2254973B (en)
MX (1) MX9101738A (en)
WO (1) WO1992008297A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272133B (en) * 1992-11-02 1996-06-12 Motorola Inc Radio system
US5710981A (en) * 1995-05-23 1998-01-20 Ericsson Inc. Portable radio power control device and method using incrementally degraded received signals
JP3537988B2 (en) * 1997-03-25 2004-06-14 松下電器産業株式会社 Wireless transmitter
US6112059A (en) 1997-11-12 2000-08-29 Motorola, Inc. Off-channel leakage power monitor apparatus and method
US6141541A (en) * 1997-12-31 2000-10-31 Motorola, Inc. Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals
GB2345599A (en) * 1998-12-23 2000-07-12 Nokia Mobile Phones Ltd A baseband predistorter for a transmitter with combined downconversion and demodulation in the feedback path
AU3394201A (en) * 2000-02-23 2001-09-03 Scientific Generics Limited Transmitter and receiver circuit
GB2369735B (en) * 2000-12-02 2004-07-14 Roke Manor Research Method of linearising a signal
GB2379109B (en) * 2001-08-21 2005-07-13 Ubinetics Ltd Linearised radio transmitter
EP1499015A1 (en) * 2003-07-17 2005-01-19 Siemens Aktiengesellschaft Circuit and process for linearizing the characteristics of a GSM power amplifier
JP4479931B2 (en) * 2008-03-11 2010-06-09 日本電気株式会社 Communication apparatus, distortion compensation circuit, and distortion compensation method
US8615054B2 (en) * 2010-09-24 2013-12-24 Intel Corporation Close-loop power amplifier pre-distortion correction
EP3396398B1 (en) * 2017-04-27 2020-07-08 Rohde & Schwarz GmbH & Co. KG Signal correction method, system for correcting a measured signal, as well as oscilloscope

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2068850A5 (en) * 1969-10-03 1971-09-03 Cit Alcatel
JPS6110327Y2 (en) * 1980-01-10 1986-04-03
JPS6041821A (en) * 1983-08-18 1985-03-05 Nec Corp Transmission output power controller
DE58907579D1 (en) * 1989-01-18 1994-06-01 Siemens Ag Digital distortion.

Also Published As

Publication number Publication date
WO1992008297A1 (en) 1992-05-14
CA2069476A1 (en) 1992-04-25
GB2254973B (en) 1995-02-22
CA2069476C (en) 1996-12-17
GB9213179D0 (en) 1992-08-12
JPH05503408A (en) 1993-06-03
FR2669165B1 (en) 1995-07-21
FR2669165A1 (en) 1992-05-15
GB2254973A (en) 1992-10-21

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees