VECTOR SIGNAL GENERATOR & ANALYSER VECTOR … · The Amitec VCL 04 Vector Signal Communication Lab is a fully ... Vector signal analyzer operates by first down ... 9 Barakhamba Road,

Features:• 40KHz to 4000MHz Vector Signal Generation and Analysis• Use with Linux, LabVIEW™, MATLAB Simulink™• No recurring cost of software or licences • Low power for FCC compliant licence free safe operation • ASIC Architecture: combines LNA, PA driver, RX/TX Mixers, RX/TX Filters, Synthesizers, RX Gain control, TX power control• +5dBm Transmit power & -120dBm Sensitivity Receiver• FPGA programmable transmission and reception for low latency• Vector IQ Modulation Bandwidth Programmable upto 30 MHz• Supports both TDD &FDD Full Duplex upto 30MHz• Calibrated +0.1ppm TCXO frequency reference• Up to 400 MS/s USB 3.0 Data Streaming• USB 3.0 Super speed Interface to Core i5 Mobile Workstation

Description: The Amitec VCL 04 Vector Signal Communication Lab is a fully synthesized vector signal Generator with vector Signal Analyser combined into a single transceiver controlled with a high speed computer for exceptional value & performance.

With the advent of digital communications systems, it is no longer possible to adequately test these systems with traditional analog signal generators. Amitec Vector signal generator is capable of generating digitally-modulated radio signals that may use any of a large number of digital modulation formats such as QAM, QPSK, FSK, BPSK, and OFDM. Modern commercial digital communication systems are all based on well-defined industry standards, so, it can generate signals based on these standards like GSM, W-CDMA (UMTS), CDMA2000, LTE, Wi-Fi (IEEE 802.11), and WiMAX (IEEE 802.16) etc. It uses a high speed DAC controlled by a PC, followed by a vector modulator and a RF signal generator.

On the other hand a vector signal analyzer measures the magnitude and phase of the input signal at a single frequency within the IF bandwidth of the instrument. It is used to make in-channel measurements, such as error vector magnitude, code domain power, and spectral flatness, on known signals.

It is useful for measuring and demodulating digitally modulated signals like W-CDMA, LTE, and WLAN. It is used to determine the quality of modulation and can be used for design validation and compliance testing.

Vector signal analyzer operates by first down converting the signal spectra by using superheterodyne techniques. A portion of the input signal spectrum is down-converted using a PLL synthesized voltage-controlled oscillator and a mixer to the Zero IF of a low-pass filter to band-limit the signal and prevent aliasing. The signal is then digitized using an analog-to-digital converter. Sampling rate is varied in relation to the frequency span under consideration.

Once the signal is digitized, it is separated into quadrature and in-phase components using a quadrature detector, which is typically implemented with a discrete Hilbert transform. Several measurements are made and displayed using these signal components and various DSP processes.

A FFT is used to compute the frequency spectrum of the signal. There is a windowing function option to limit spectral leakage and enhance frequency resolution.This window is implemented by multiplying it with the digitized values of the sample period before computing the FFT.

A constellation diagram represents a signal modulated by a digital modulation scheme such as quadrature amplitude modulation or phase-shift keying. This diagram maps the magnitude of the quadrature and in-phase components to the vertical and horizontal directions, respectively. Qualitative assessments of signal integrity can be made based on interpretation of this diagram.

By representing the quadrature and in-phase components as the vertical and horizontal axes, the error vector magnitude can be computed as the distance between the ideal and measured constellation points on the diagram. This requires knowledge of the modulated signal in order to compare the received signal with the ideal signal.

The system is based on a reconfigurable RF/FPGA/ARM hardware platform and an open source communications technology software. This approach allows for tremendous flexibility at a reduced cost. Each of the communications technology to be studied is provided as an application that can be selected from the menu. The hardware is self configurable upon connecting to mobile workstation provided.

The selected application configures the hardware platform to implement the communications technology physical layer and presents a specially-designed user interface for the student.

In analog system, it can implement on air transmission & reception of Analog modulation & demodulation techniques like AM, DSBSC, SSB, Narrowband FM, Wideband FM, Stereo FM and others.

In digital system, it can implement on air transmission & reception of Digital Modulation & Demodulation techniques like ASK, FSK, BPSK, DBPSK, MSK, GMSK, DQPSK, QPSK, OQPSK, pi/4QPSK, 8PSK,16QAM, 64QAM, 256QAM, CPFSK, GFSK, and other variants.

The USB 3.0 super speed interface serves as the connection between the VCL04 Lab and the mobile workstation. This enables the user to realize 40 MS/s of real-time bandwidth in the receive and transmit directions, simultaneously.

ASIC houses complete RF and DAQ subsystems on a single board. It hosts onboard RF Transceiver subsystems capable of tuning frequencies from 40KHz to 4GHz.

For ease of usage Core i5, USB 3.0 Mobile Workstation is provided with Linux Ubuntu pre loaded and tested with platform for repeatable performance and no surprises. The list of experiments is growing by the day to include most modulations as per international curriculum.

VECTOR SIGNAL GENERATOR & ANALYSER VECTOR COMMUNICATION LAB VCL04

Mfd by: Amitec Electronics Ltd.Regd. Off: 504, Nilgiri, 9 Barakhamba Road, New Delhi-110001, India, Works: 4/32, Site-4, Industrial Estate Sahibabad, NCR-201010, India, [email protected], www.amitec.co+91-11-41505510, +91-120-4371276

Hardware Technical SpecificationsMicrowave Vector Signal Generator RF Frequency Range 40KHz-4000MHzResolution <3HzFrequency reference Accuracy <1ppmFrequency Settling time <10msModulation I/Q Bandwidth DC-40.0 MHZPhase Noise -130dBc/Hz at 1MHz offsetI/Q Sideband Suppression -30dBcLO carrier Suppression -30dBcAmplified output +20dBm using amplifierAmplitude level Control Range >90dB (50dB in 1dB steps +40dB attenuator)Step Size 3Hz-1GHzRF Output power level 0dBm typical, NativeAttenuator 40dB (External SMA-SMA) Output Impedance 50 Ohms SMAModulation Internal BPSK, QPSK, OQPSK, QAM, GMSK, SSB etcModulation External MATLAB compatiblePN Generator Internal PN15, Gold, Kasami, Barker etcClock Internal/ExternalTime Base Internal 38.400 MHz/ External for Synchronization with receiverData Serial/FileNoise Floor -130dBmBaseband Input 1.6V p/p ACBaseband Input 1.5V DCBaseband I/O DifferentialLocal Oscillator LO >0dBmLinearity +20dBm OIP3 Baseband Bandwidth <1-15MHzDAC Sample Rate upto 40 MS/sDAC Resolution 12 bitsDAC Wideband SFDR 60 dBc

Microwave Vector Signal AnalyserFrequency Range 40KHz-4000MHzResolution <3HzReceiver Sensitivity -120dBmDynamic Range >110dB(70dB log +40dB atten.)PLL Phase Noise -125dBc/Hz at 1MHzRx Noise Figure <5dBDemod Bandwidth DC-40.0MHzFrequency Accuracy <1 ppmSSB/LO Suppression >40 dBcIQ Phase Error 3 degreeIQ Amplitude Error 0.5dBStep Size 3Hz-1GHzMeasurement RF level in dBm/dBuV/pW/dBrResolution 0.1dBInput Impedance 50 Ohms SMALinearity +20dBm IIP3Rx Gain Control Range >50dB in 3dB stepsPLL Settling time 20usADC Sample Rate upto 40 MS/sADC Resolution 12 bitsADC Wideband SFDR 60 dBcOuput Amplitude 250mVp/p differentialHost Sample Rate 50/25 MS/sDownConversion Superhetrodyne DirectconversionDemodulation AM, FM, QPSK, QAM, PSK etcAuto Mode Interfacing with VSGFPGA Integrated Transciever Altera Cyclone at 3GbpsLogic Elements 40,000M9K Memory Blocks >400Embedded Memory >2000 Kbits18bit X18bit Multipliers & PLL >100 &4Maximum User I/Os & Channels >500 & >200 DifferentialCurrent Consumption <500mA, USB driven

System Block Diagram


Mobile WorkstationDisplay & OS 15.6 inch LCD/LED Linux UbuntuProcessor CPU Core i5 64 bit >3GHzOnboard Graphics Intel HD 4600MRAM 4GB DDR3 1.6GHzR/W Speed >100MBpsPorts 3XUSB 3.0, HDMI, Gigabit LAN

Software Environment :Features: Audio, Boolean, Byte Operators, Channelizers, Channel Models, Coding, Control Port, Debug Tools, Deprecated, Equalizers, Error Coding, FCD, File Operators, Filters, Fourier Analysis, GUI Widgets, Impairment Models, Instrumentation, Level Controllers, Math Operators, Measurement Tools, Message Tools, Misc, Modulators, Networking Tools, NOAA, OFDM, Packet Operators, Pager, Peak Detectors, Resamplers, Sinks, Sources, Stream Operators, Stream Tag Tools, Symbol Coding, Synchronizers, Trellis Coding, Type Converters, Variables, Waveform Generators.

Experiments nominal:On air transmission and reception of analog modulation & demodulation of FM, AM, DSB & SSB and digital modulation & demodulation of PAM, PWM,PPM, PCM, DPCM, DM, ASK, FSK, PSK, DPSK, MSK, GMSK, CPFSK, GFSK, BPSK, QPSK, DQPSK, OQPSK, pi/4QPSK, 8PSK,16QAM, 64QAM, 256QAM, ADSL, OFDM, DSSS, FHSS, Analog Signal Sampling & Reconstruction, Digital Time Division Multiplexing and Demultiplexing, Data Conditioning & Carrier Modulation, Data Reconditioning & Carrier Demodulation, Analog Channel Models like Noise, Interference, Distortion, Channel performance measurements (spectral bandwidth, Symbol Rate, Bit Rate, Channel Capacity, Channel Utilization, Signal to noise ratio, Bit Error Rate (BER), Latency, Jitter, Eye Diagram, Constellation diagram, Oscilloscope, Spectrum Analyser, Waterfall display, Etc

Accessories: 20dB attenuator X 2pcs, RG316 SMA-SMA Cables X2pcs, Microstrip Log Periodic Array S11>10dB, Bandwidth 3 +/-1 GHz, Gain 6dBi X2 pcs, 50 Ohms Matched Termination X 2pcs, Antenna Mounting Stand, Omni Directional Antenna 1-4GHz X2pcs, Amplifier 20dB gain & 3dB NF & +20dBm compresssion


4ASK Constellation captured in realtime on air at Rx @ 1GHz

BPSK Constellation captured in realtime on air at Rx @ 1GHz

16QAM Constellation captured in realtime on air at Rx @ 1GHz

QPSK Constellation captured in realtime on air at Rx @ 1GHz Amplitude Modulation (AM) Frequency Domain @ 1GHz

AM Time & Frequency Domain Combined Waterfall

256 QAM Constellation capture in realtime on air at Rx @ 1GHz

8 PSK Constellation captured in realtime on air at Rx @ 1GHz

64 QAM Constellation captured in realtime on air at Rx @ 1GHz



Narrow Band FM Frequency Domain Realtime Rx @ 1GHz

QPSK I & Q in Time Domain response @ >1GHz

GMSK Frequency Domain response @ >1GHz

QAM 256 Frequency Domain response @ >1GHz

Orthogonal Frequency Division Multiplexing OFDM FD @ >1G

ASK Time Domain Response @ >1GHz


FSK Implementation in Graphical User Interface

Finite Impulse Response (FIR) Low Pass Filter


Orthogonal Frequency Division Multiplexing OFDM TD @ >1G

Code Division Multiple Access CDMA Downlink Capture

Finite Impulse Response (FIR) Root Raised Cosine (RRC)

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VECTOR SIGNAL GENERATOR & ANALYSER VECTOR … · The Amitec VCL 04 Vector Signal Communication Lab is a fully ... Vector signal analyzer operates by first down ... 9 Barakhamba Road,