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presented by: Mark Lombardi Agilent UWB Solution Manager mark_lombardi@agilent.com Advances in UWB Measurement Technology Advances in UWB Measurement Technology
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Advances in UWB Measurement Technology - UBC ECElampe/ICUWB2009/2009ICUWB_Lombardi.pdfAdvances in UWB Measurement Technology . Outline ... Simulation Agilent Signal ... signals to

May 16, 2018

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  • presented by:

    Mark LombardiAgilent UWB Solution Managermark_lombardi@agilent.com

    Advances in UWB Measurement Technology

    Advances in UWB Measurement Technology

  • Outline

    UWB overview

    UWB R&D Challenges (Macro View)

    Design and Simulation of MB-OFDM based UWB

    Physical device measurements

    Industry Driven Testing

    Compliance Based/Interoperability

    Regulatory

    Conclusion / Q&A

  • Group/Presentation Title

    Agilent Restricted

    Month ##, 200XPage 3

  • Shannon-Hartley Theorem

    Channel Capacity in Bits per Second is equal to the Bandwidth

    times the log of 1 plus the signal to noise power ratio

    Implications

    1) Given a fixed signal to noise ratio, more bandwidth equals more

    data rate

    2) UWB can transmit data below the noise floor

    Examples

    1) A 30dB signal to noise ratio in a 500 MHz channel implies

    about 1.5Gbit/s capacity

    2) A 1 GHz channel with noise 10 times the signal level has about

    41 Mbits/s capacity

  • UWB Spectrum

    1.6 1.9 2.4

    Bluetooth,802.11b,gCordless PhonesMicrowave Ovens

    GP

    S

    5

    802.11a

    -41 dBm/Mhz

    Part 15 Limit

    UWB Spectrum

    Frequency (Ghz)

    EmittedSignalPower

    10.63.1 8.2 57 81

    ISM

    66

    FCC and ITU-R define UWB in terms of a transmission from

    an antenna for which the emitted signal bandwidth exceeds

    the lesser of 500 MHz or 20% of the center frequency

    ISM

    RA

    DA

    R

  • Group/Presentation Title

    Agilent Restricted

    Month ##, 200XPage 6

    WLANMIMO

    WiMAX/

    LTE

  • Ultra-Wideband Technology (UWB)

    UWBUWB

    Direct SpectrumDirect Spectrum

    MBMB--OFDMOFDM

    RADARRADAR

    CommunicationsCommunications

    WiMediaWiMedia

    Wireless USB Wireless USB

    High Speed BluetoothHigh Speed Bluetooth

    IEEE 802.15.3aIEEE 802.15.3a

    UWB over CoaxUWB over Coax

    (60GHz)(60GHz)

    60GHz60GHz

    ProprietaryProprietary

    ETSIETSIECMAECMA--368368

    IEEE 802.15.3cIEEE 802.15.3c

  • UWB Engineering Challenges I

    ANTENNA, COMPONENT

    Wideband VSWR match and Impulse response

    Differential Signal Isolation, Common Mode Rejection

    TRANSMITTER

    Spectral Flatness, Emission Mask, Peak Power, ACP

    Transmit chain amplitude & phase response

    Modulation Measurements (Error Vector Magnitude, Common Pilot Error)

    Phase noise

    Regulatory

  • UWB Engineering Challenges II

    RECEIVER

    Interference Testing

    Generating UWB Test Signals

    Measuring Rx PER / BER, with known distortions (impairments)

    Interoperability testing

  • The Test & Measurement Challenge

    Cross Domain Solutions

    RF-IC / BB-IC IntegrationRF-IC Validation

    BB-IC Turn-on

    RF

    A/D

    A/D

    D/A

    D/A

    IF

    Base

    ban

    dD

    igit

    al

    RF

    A/D

    A/D

    D/A

    D/A

    IF

    Base

    ban

    dD

    igit

    alDESER

    SERDESER

    SER

    Digital Serial IQ + ControlAnalog IQ

    Evolving To:Digital

    Serial

    Was: Analog

    Measurement

    DigitalRF

  • The Range of Measurement Requirements

    Parameter Typical

    Range

    Frequency..DC - 95GHz

    Pulse Width (PW)...10nsec to Infinite (CW)

    Rise Time................100psec - 100nsec

    Duty Cycle..0.01% - 100%

    Peak Power.100uW - 50MW

    Frequency Agility/BW..100MHz - 6GHz (BW)

    Digital, Analog, RF, IF, BBIQ, Zero IF, Serial Data, Protocol,

    Mixed Signal

  • ADC quantization error

    ADCADC Model

  • 802.11a interferer

    WiMedia

    Signal

    802.11aSignal

    Filter

  • Page 14

    Agilent provides test equipment enabling the design, debug, compliance test and manufacturing of UWB

    Agilent E8267DPSG Series

    Vector Signal Generator

    Receiver Compliance AnalysisReceiver Compliance Analysis

    Advanced Design System

    Signal Generation

    Demodulation

    Base Band Modulation

    Agilent N6030AArbitrary Waveform

    Generator

    Agilent 89600-seriesVSA Software, option BHB,WiMedia based MB-OFDMDebug and ComplianceAgilent E4440A

    PSA Series 26.5GHzSpectrum Analyzer

    Agilent Infiniium DSO 91204B12GHz,40GSaOscilloscope

    Spectrum Testing

    UWB DUT

    Simulation

    Agilent Signal Studio SW

    Regulatory Test, FCC

    Agilent 16900 Logic Analyzer (Digital BBIQ/IF)

    Agilent UWB Test Products

    Transmitter Compliance AnalysisTransmitter Compliance Analysis

  • 89600 VSA SW Radio Measurements

  • Transmitter performance testing

  • Example PHY Compliance Tests

    Transmitter

    Transmit Center Frequency

    Transmit Power Control

    Power Spectral Density Mask (PSD)

    Adjacent Channel Power Ratio (ACPR)

    Error Vector Magnitude (EVM)

    Receiver (optional)

    Receiver Power Sensitivity

    Receiver Frequency Offset Sensitivity

    Phase tracking

    RF tests for WiMedia based radios

  • Page 18

    13GHz Acquisition off the Air

    Over the air

    acquisition of

    up to 5 ms of

    13GHz of BW

  • Page 19

    MB-OFDM Demodulated

    Tune to 9.4

    GHz and

    demodulate

    the MB-

    OFDM signal

    transmitting

    in UWB Band

    Group 4

  • 1 GSym/sec QPSK, 5.7% EVM

    1 GSym / sec

    (1.5 GHz BW)

  • 1GHz FM Chirp generation and capture

    1.0 uS pulseFrequency linearity across the 1 GHz sweep

    Smooth phase rotation

  • Page 22

    WLAN Demodulated

    Tune to 6GHz

    and

    demodulate 32

    QAM

  • Capture of WiMedia based Signals

    Over 500 MHz required for FFI and 1.6 GHz required for TFI

    Mix down and capture with 2 GHz scope all Band groups

    Direct capture with 6 GHz scope for Band Group 1

    12 GHz scope for all UWB Band Groups

    Captured with Agilent DSO91204B

  • Capture of Pulses

    Capture with appropriate BW

    BB Capture (DC Scope BW)

  • Page 25

    25

    Dynamic Range, going beyond bits

    The noise figure is fixed, but the noise floor and bits

    are not. Over-sampling and filtering reduce noise

    the Bandwidth = the noise = 6dB = 1 bit

    @12GHz bandwidth

    = 406uV/p-p = 4.3mV

    @10GHz bandwidth

    = 365uV/p-p = 3.6mV@6GHz bandwidth

    = 278uV/p-p = 2.8mV@1GHz bandwidth

    = 153uV/p-p = 1.6mVDSO91204A Example

  • Page 26

    Differentiating Noise Sources

    Real world example:DSO91204A

    43 dBc12 GHz

    2nd Harmonic

  • Page 27

    In vs. Out of Band Measurements

    Real world example:DSO91204A

    500MHz

    12 GHz

  • Transmitter Impairments

    Collect proposals on types of

    impairments are relevant and good

    predictors of interoperability

    Phase Distortion

    Frequency Offset

    LO leakage

  • Unintentional OCI and ACI

    Maintain PER with transmitter in adjacent channel (Intended Adjacent Channel Operation)

    Power level

    Maintain PER with image in channel (Unintentional Occupied Channel Interference)

    20dB below

  • Wideband FM Chirp

    800 MHz wide chirp

    1.0 us pulse width

    50 us PRI

    Before Corrections After Corrections

  • Interference Signal Sources

    Simulating UWB Interference

    It may not be necessary to create the original pulse. Consider what the victim receiver will actually see

    ESG-C has 80 MHz Arbitrary Waveform modulation bandwidth, which can be used to: Generate 802.11a and Satellite

    signals to test a UWB receiver

    Generate partial bandwidths of a UWB signal to test a narrow band receiver

    DS-UWB with

  • High speed pulses (Example #2)

    Digitizing considerations

    Frequency content

    Noise floor

    Time capture

  • High speed pulses (Example #2)

    8 GHz capture BW

  • High speed pulses (Example #2)

    6 GHz capture BW

  • High speed pulses (Example #2)

    4 GHz Capture BW

  • High speed pulses (Example #2)

    3 GHz Capture BW

  • UWB Signal Capture and Demodulation (Example #4)

    (40 GSa/s, 6.6GHz carrier)

  • UWB Signal Capture and Demodulation (Example #4)

    (2 GSa/s, 6.6GHz carrier)

  • UWB Signal Capture and Demodulation (Example #4)

    (2 GSa/s, 6.6GHz Carrier, Image at 600 MHz)

  • UWB Signal Capture and Demodulation (Example #4)

    (2 GSa/s, 6.6GHz Carrier, Image at 2.6GHz)

  • UWB Signal Capture and Demodulation (Example #4)

    (4 GSa/s, 3.96GHz Carrier)

  • UWB Signal Capture and Demodulation (Example #4)

    (5 GSa/s, 3.96GHz Carrier)

  • Bandwidth VS Dynamic Range Comparison

    Bandwidth

    Dyn

    am

    ic R

    an

    ge

    PSA option 122 80MHz @78 dB, 50

    GHz, One Channel

    Wide Band VSA (PSA option 123+Infiniium)

    300 MHz @ 40 dB or 250 MHz @ 50 dB, 50

    GHz One Channel DSO90000B,13 GHz Infiniium @ 40 dB,

    Four Channels

    Ultra Wideband VSA (N5280A+Infiniium) 1.5

    GHz @ 40 dB, 26.5 GHz and 50 GHz options

    Four Channels

  • Regulatory Emissions Tests

    Why spectrum analyzer for regulatory testing, not oscilloscope?

    Spurious free noise floor

    Regulatory 1MHz ResBW, Compliance 3MHz ResBW

  • Regulatory Emissions Tests

    E4440 26GHz Performance Spectrum Analyzer

    Most of the world wide regulatory organizations have or will have by early next year UWB limits.

  • Tools are available today to help with the design and

    integration of UWB based transceiver.

    Simulation aids the development of UWB based radios as

    well as optimization and integration with other radios and

    follow on applications.

    The multi-GHz of instantaneous BW needed to capture and analyze UWB requires an Oscilloscope.

    Powerful Signal Analysis SW, can aid transceiver

    optimization, analysis and verification of operation.

    Receiver performance can be benchmarked and optimized

    through the use of an instrumented transmitter.

    Regulatory testing necessitates Spectrum Analyzer

    Summary

  • Agilent Technologies Solutions for MB-OFDM Ultra-

    wideband Application Notehttp://cp.literature.agilent.com/litweb/pdf/5989-5280EN.pdf

    Agilent 89600 Series Vector Signal Analysis Software Data Sheet 89601A/89601AN/89601N12 http://cp.literature.agilent.com/litweb/pdf/5989-1786EN.pdf

    89600 Vector Signal Analysis Software Option BHB:

    Multiband-OFDM Modulation Analysis Technical

    Overview

    http://cp.literature.agilent.com/litweb/pdf/5989-5452EN.pdf

    Ultra wideband Communication RF MeasurementsApplication Note AN1488 http://cp.literature.agilent.com/litweb/pdf/5989-0506EN.pdf

    Web References

    www.agilent.com/find/signalgenerators

    www.agilent.com/find/psg

    www.agilent.com/find/basebandstudio

    www.agilent.com/find/signalstudio

    www.agilent.com/find/E6432

    www.agilent.com/find/esg

    www.agilent.com/find/phasenoise

    www.agilent.com/find/AD

    More Information www.agilent.com/find/uwb