SE544242C2 - Method to double the effective bandwith in a digital receiver system - Google Patents

Method to double the effective bandwith in a digital receiver system

Info

Publication number
SE544242C2
SE544242C2 SE2000156A SE2000156A SE544242C2 SE 544242 C2 SE544242 C2 SE 544242C2 SE 2000156 A SE2000156 A SE 2000156A SE 2000156 A SE2000156 A SE 2000156A SE 544242 C2 SE544242 C2 SE 544242C2
Authority
SE
Sweden
Prior art keywords
signal
frequency
amplitude
path
receiver system
Prior art date
Application number
SE2000156A
Other languages
Swedish (sv)
Other versions
SE2000156A1 (en
Inventor
Anders Widman
Original Assignee
Anders Widman
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 Anders Widman filed Critical Anders Widman
Priority to SE2000156A priority Critical patent/SE544242C2/en
Publication of SE2000156A1 publication Critical patent/SE2000156A1/en
Publication of SE544242C2 publication Critical patent/SE544242C2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/1205—Multiplexed conversion systems
    • H03M1/122—Shared using a single converter or a part thereof for multiple channels, e.g. a residue amplifier for multiple stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0025—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage using a sampling rate lower than twice the highest frequency component of the sampled signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H04J1/05—Frequency-transposition arrangements using digital techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

The invention is a method to increase the effective bandwidth for a digital receiver system.Many applications needs wide instantaneous bandwidth, for example applications for mobile phone communication, electronic warfare and radio systems. The invention increase the bandwidth for a System given a certain analogue to digital conversion speed.The solution is to split (S1) the radio frequency, RF, input signal in two path, mixing (M1, M2) the signal in each path with an unique local oscillator, LO, frequency (O1, O2) giving an intermediate frequency, IF, frequency pair for each RF input. The RF signal in one path is attenuated (A1) giving an amplitude unbalance of the frequency pair. The signal processing determine after signal sampling if the signal falls within the first Nyquist zone or the second by determine if the low amplitude are higher or lower in frequency compared to the high amplitude signal.

Claims (2)

Claims
1. A method to increase the effective bandwidth for a digital receiver system by usingfrequency coding and amplitude coding characterized by - splitting (S1) the incoming RF signal in two paths, - down converting the signals in each path to IF frequency by mixers (M1, M2) and localoscillators, LOs, (01,
2. ) where the LOs (01, O2) have different frequencies, and wherethe frequencies are placed out of band, - amplitude coding by inserting and attenuation (A1) in one of the paths, thus creating anamplitude unbalance of the frequency pair, - summing the two paths in power combiner (S2), - filtering the combined IF signal by a band pass filter (BP2), - sampling the signal in two Nyquist zones with an analog-to-digital converter, ADC, and- determining if the signal falls within the first Nyquist zone or the second Nyquist zoneby amplitude comparison if the low amplitude signal is higher or lower in frequency thanthe high amplitude signal, and thereby - extracting the RF input real frequency
SE2000156A 2020-09-08 2020-09-08 Method to double the effective bandwith in a digital receiver system SE544242C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE2000156A SE544242C2 (en) 2020-09-08 2020-09-08 Method to double the effective bandwith in a digital receiver system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2000156A SE544242C2 (en) 2020-09-08 2020-09-08 Method to double the effective bandwith in a digital receiver system

Publications (2)

Publication Number Publication Date
SE2000156A1 SE2000156A1 (en) 2022-03-09
SE544242C2 true SE544242C2 (en) 2022-03-15

Family

ID=80628156

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2000156A SE544242C2 (en) 2020-09-08 2020-09-08 Method to double the effective bandwith in a digital receiver system

Country Status (1)

Country Link
SE (1) SE544242C2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0766409A2 (en) * 1995-09-27 1997-04-02 AT&T Corp. Multiband downconverter for digital receivers
WO2004113949A1 (en) * 2003-06-23 2004-12-29 Telefonaktiebolaget Lm Ericsson (Publ) A method for detecting the presence of radar signal emitters, an electronic support measures unit and a system for determining the position and identity of said emitters
US9473158B1 (en) * 2015-09-30 2016-10-18 Lockheed Martin Corporation Radio frequency receiver with overlapped analog to digital converter (ADC) architecture
US9742448B1 (en) * 2011-07-13 2017-08-22 Softronics, Ltd. Channelized multicarrier digitizer
SE1800093A1 (en) * 2018-05-11 2019-11-12 Ew Labs Ab Method for increasing the instantaneous bandwidth of a digital receiver system with frequency coding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0766409A2 (en) * 1995-09-27 1997-04-02 AT&T Corp. Multiband downconverter for digital receivers
WO2004113949A1 (en) * 2003-06-23 2004-12-29 Telefonaktiebolaget Lm Ericsson (Publ) A method for detecting the presence of radar signal emitters, an electronic support measures unit and a system for determining the position and identity of said emitters
US9742448B1 (en) * 2011-07-13 2017-08-22 Softronics, Ltd. Channelized multicarrier digitizer
US9473158B1 (en) * 2015-09-30 2016-10-18 Lockheed Martin Corporation Radio frequency receiver with overlapped analog to digital converter (ADC) architecture
SE1800093A1 (en) * 2018-05-11 2019-11-12 Ew Labs Ab Method for increasing the instantaneous bandwidth of a digital receiver system with frequency coding

Also Published As

Publication number Publication date
SE2000156A1 (en) 2022-03-09

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