WO2003105430A3 - A modulator using a frequency synthesiser - Google Patents

A modulator using a frequency synthesiser Download PDF

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Publication number
WO2003105430A3
WO2003105430A3 PCT/US2003/018350 US0318350W WO03105430A3 WO 2003105430 A3 WO2003105430 A3 WO 2003105430A3 US 0318350 W US0318350 W US 0318350W WO 03105430 A3 WO03105430 A3 WO 03105430A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
frequency
modulator
intermediate frequency
outputs
Prior art date
Application number
PCT/US2003/018350
Other languages
French (fr)
Other versions
WO2003105430A2 (en
Inventor
Keming Joseph Chen
Mark Steven Schmidt
Original Assignee
Gen Instrument 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.)
Filing date
Publication date
Application filed by Gen Instrument Corp filed Critical Gen Instrument Corp
Priority to AU2003237979A priority Critical patent/AU2003237979A1/en
Publication of WO2003105430A2 publication Critical patent/WO2003105430A2/en
Publication of WO2003105430A3 publication Critical patent/WO2003105430A3/en

Links

Classifications

    • 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
    • H03C3/403—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 two quadrature frequency conversion stages in cascade

Abstract

A method and system for modulating data onto a carrier signal in a plurality of channels, each of the channels having a channel bandwidth, can be created for use in any two-way satellite communication system or other wireless communication application where frequency hopping with or without Doppler compensation is desired. The system preferably includes a digital modulator that outputs a modulated baseband signal, an intermediate frequency modulator that receives the modulated baseband signal and outputs an intermediate frequency signal derived from the modulated baseband signal, a frequency synthesizing system that outputs a synthesized intermediate frequency signal to the intermediate frequency modulator, and a circuit (numerically controlled oscillator) connected to the digital modulator which provides a signal to the digital modulator. This signal has a frequency including an offset that allows the frequency synthesizing system and intermediate frequency modulator to make frequency steps equal to the channel bandwidth. The offset can also include a small offset that compensates for the Doppler effect.
PCT/US2003/018350 2002-06-11 2003-06-10 A modulation system for modulating data onto a carrier signal with offsets to compensate for doppler effect and allow a frequency synthesizing system to make steps equal to channel bandwidth WO2003105430A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003237979A AU2003237979A1 (en) 2002-06-11 2003-06-10 A modulator using a frequency synthesiser

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/167,845 US7167528B2 (en) 2002-06-11 2002-06-11 Modulation system for modulating data onto a carrier signal with offsets to compensate for doppler effect and allow a frequency synthesizing system to make steps equal to channel bandwidth
US10/167,845 2002-06-11

Publications (2)

Publication Number Publication Date
WO2003105430A2 WO2003105430A2 (en) 2003-12-18
WO2003105430A3 true WO2003105430A3 (en) 2004-07-15

Family

ID=29710917

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/018350 WO2003105430A2 (en) 2002-06-11 2003-06-10 A modulation system for modulating data onto a carrier signal with offsets to compensate for doppler effect and allow a frequency synthesizing system to make steps equal to channel bandwidth

Country Status (3)

Country Link
US (1) US7167528B2 (en)
AU (1) AU2003237979A1 (en)
WO (1) WO2003105430A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI253820B (en) * 2003-09-02 2006-04-21 Novatek Microelectronics Corp Non-coherent frequency shift keying (FSK) transmitter using a digital interpolation synthesizer
WO2006012348A2 (en) * 2004-06-25 2006-02-02 Atc Technologies, Llc Method and system for frequency translation on-board a communications satellite
US7529322B2 (en) * 2005-08-26 2009-05-05 University Of Macau Two-step channel selection for wireless receiver front-ends
EP2343843A3 (en) * 2007-03-08 2011-09-21 ST-Ericsson Belgium NV Multi-channel transmitter
US8831064B1 (en) * 2007-06-13 2014-09-09 Xilinx, Inc. Method of and circuit for generating a spread spectrum clock signal
GB2452030A (en) 2007-08-10 2009-02-25 Owen Mumford Ltd Injection devices
US8433737B1 (en) * 2007-11-30 2013-04-30 Lockheed Martin Corporation Spurious DDS signal suppression
FR2952451B1 (en) * 2009-11-10 2011-12-23 Thales Sa DYNAMIC MANAGEMENT OF THE FREQUENCY ROUTING CAPABILITY OF A TRANSPARENT DIGITAL PROCESSOR
US9414184B2 (en) * 2012-02-15 2016-08-09 Maxlinear Inc. Method and system for broadband near-field communication (BNC) utilizing full spectrum capture (FSC) supporting bridging across wall
US8855174B2 (en) * 2012-08-10 2014-10-07 Alcatel Lucent Frequency agile multiband transmitter using a radio frequency digital to analog converter
US9484986B2 (en) 2013-11-09 2016-11-01 Maxlinear, Inc. Method and system for broadband near-field communication
US10498373B1 (en) * 2018-08-30 2019-12-03 Rohde & Schwarz Gmbh & Co. Kg Broadband sender system and method for running the latter
CN111624402B (en) * 2020-05-31 2022-09-02 西南电子技术研究所（中国电子科技集团公司第十研究所） Method for accurately estimating carrier frequency of weak PM signal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5390346A (en) * 1994-01-21 1995-02-14 General Instrument Corporation Of Delaware Small frequency step up or down converters using large frequency step synthesizers
EP0817369A2 (en) * 1996-06-25 1998-01-07 Harris Corporation Method of up-converting and up-converter with pre-compensation filter
US5717719A (en) * 1994-09-10 1998-02-10 Samsung Electronics Co., Ltd. Digital radio transmission-reception apparatus
EP0853387A2 (en) * 1996-12-23 1998-07-15 Nokia Mobile Phones Ltd. Method and apparatus for transmitting and receiving multichannel signals
US6141390A (en) * 1997-05-05 2000-10-31 Glenayre Electronics, Inc. Predistortion in a linear transmitter using orthogonal kernels
US6268818B1 (en) * 1998-06-24 2001-07-31 Conexant Systems, Inc. Method and apparatus for improving modulation accuracy

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Publication number Priority date Publication date Assignee Title
US5412352A (en) * 1994-04-18 1995-05-02 Stanford Telecommunications, Inc. Modulator having direct digital synthesis for broadband RF transmission
US5446423A (en) * 1994-09-19 1995-08-29 Motorola, Inc. Digital single sideband modulator and method
US5732333A (en) * 1996-02-14 1998-03-24 Glenayre Electronics, Inc. Linear transmitter using predistortion
US6259747B1 (en) * 1997-03-20 2001-07-10 Telefonaktiebolaget L M Ericsson (Publ) IQ modulator, and associated method
US6421396B1 (en) * 1997-04-16 2002-07-16 Broadcom Corporation Variable rate modulator
US5886752A (en) * 1997-12-22 1999-03-23 Rockwell International Spurious free wideband phase and frequency modulator using a direct digital synthesis alias frequency band
US6236283B1 (en) * 1999-04-08 2001-05-22 Hitachi America, Ltd. Methods and apparatus for generating a filtered signal having a fixed sampling rate from a variable baud rate input data stream
US6766154B2 (en) * 2001-03-07 2004-07-20 Northrop Grumman Corporation Fast settling fine stepping phase locked loops

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5390346A (en) * 1994-01-21 1995-02-14 General Instrument Corporation Of Delaware Small frequency step up or down converters using large frequency step synthesizers
US5717719A (en) * 1994-09-10 1998-02-10 Samsung Electronics Co., Ltd. Digital radio transmission-reception apparatus
EP0817369A2 (en) * 1996-06-25 1998-01-07 Harris Corporation Method of up-converting and up-converter with pre-compensation filter
EP0853387A2 (en) * 1996-12-23 1998-07-15 Nokia Mobile Phones Ltd. Method and apparatus for transmitting and receiving multichannel signals
US6141390A (en) * 1997-05-05 2000-10-31 Glenayre Electronics, Inc. Predistortion in a linear transmitter using orthogonal kernels
US6268818B1 (en) * 1998-06-24 2001-07-31 Conexant Systems, Inc. Method and apparatus for improving modulation accuracy

Also Published As

Publication number Publication date
AU2003237979A1 (en) 2003-12-22
US7167528B2 (en) 2007-01-23
AU2003237979A8 (en) 2003-12-22
US20030227982A1 (en) 2003-12-11
WO2003105430A2 (en) 2003-12-18

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