RF Semiconductor Test AXRF-Q Multi-Port PXI RF Sub-System

Transcription

1 RF Semiconductor Test AXRF-Q Multi-Port PXI RF Sub-System Datasheet The most important thing we build is trust Overview AXRF-Q Multi-Port PXIe RF Subsystem is an integrated solution for testing RF semi-conductor components. It is a cost effective, modular alternative to expensive dedicated semi-conductor test platforms and ATE systems formed from the integration of discrete bench instruments. AXRF-Q is designed to be used as either a stand-alone tester or as a RF sub system integrated with existing semi-conductor testers to extend their test coverage to include RF measurements. The AXRF-Q is based on proven, high-speed PXI modular instrumentation that provides industry-leading test times and parallel test efficiency for multi-site applications. AXRF-Q is supported by software to perform cellular and wireless connectivity communication standards measurements. Highlights Configurable with up to 32 bi-directional 6 GHz RF test ports for multi-site testing or single site complex device testing Vector and scalar network analysis, power, modulation, spectrum analysis and noise figure measurement on any RF test port. Vector modulated RF signals, two tone CW signals or broadband noise levelled outputs from up to 16 RF ports simultaneously. Industry standard PXI/PXIe modular design Open platform supporting integration with additional 3 rd party PXI modules Part Number Issue 1

2 Applications Single / multi-site production and design characterisation testing of o Discrete RF components o Multi-mode multi-band power amplifiers (MMMB) o Front End Modules o Switches o Transceivers OEM RF sub-system for SOC, ucontroller device test Measurements S11, S12, S22, S21 Return Loss Noise Figure, Gain Modulation Quality 1 o EVM, RCE, Rho, phase/amplitude error, skew, gain imbalance, carrier leak Spectral emissions 2 o ACPR, OBW, SEM Performance 65 MHz to 6 GHz o Frequency settling time <400 µs RF output level up to +15 dbm (PEP) with:- o 0.01 db resolution o Amplitude settling time <50 µs o CW or IQ modulated o Residual EVM better than 1% 3 o Repeatability <0.02 db o Accuracy <0.5 db o Return Loss >20 db RF input level -45dBm to +20 dbm with:- o Noise -154 dbm/hz o Return Loss >20dB o Port to Port isolation better than 80 db o Residual EVM better than 1% Instantaneous I/O signal bandwidth 200 MHz Scalar measurement repeatability 0.05 db NF measurement to 2 db S11, S22 measurements with 0.4 db/2.5 deg repeatability S12, S21 measurement with 0.1 db/2.0 deg repeatability 1 When the requisite option is enabled. Methods in accordance with those published 3GPP, 3GPP2, IEEE communications standard. 2 As above 3 WLAN 11ac VHT GHz, equalisation = pre-amble only, phase tracking enabled

3 Hardware Description AXRF-Q can be configured with one or two independent RF sub systems in a single 4U high PXI chassis with either an internal or external PC controller. Each AXRF-Q sub-system comprises a Vector Signal Transceiver, a RF distribution module, one to four Quad Port RF modules providing up to 16 bi-directional RF test ports and an optional 2 nd signal generator. Single RF sub-system with up to 16 RF Test Ports Dual RF sub-system with up to 32 RF Test Ports VSA/VSG The core of AXRF-Q is a high performance Vector Signal Transceiver module which provides CW and vector signal analysis (VSA) and vector signal generation (VSG) to 6 GHz for signals with up to 200 MHz instantaneous bandwidth.

4 3092 RFDM RF Distribution Module The 3092 is a single slot wide RF Distribution Module with an integrated noise source provides RF signal routing between instrumentation resources and up to four 3094 Quad RF Test Port modules QRPM Quad RF port module The 3094 is a single slot wide RF conditioning module with four wideband dual directional couplers enabling 2 port S parameter measurements on a variety of port pairings. The design enables simultaneous output on two ports 1 & 3, 1 & 4, 2 & 3 or 2 & 4. Coarse and fine RF level control permits both outputs to be independently levelled / 3094 set Soft Front Panel Signal path routing and gain settings through 3092 and 3094 can be set manually using a low level soft front panel. This permits user to optimise performance in cases where the AXRF default range settings are sub optimal for the signal type in use e.g. where signal peak to average power ratio is high. Using manual settings under these circumstances could lead to an improvement in residual EVM performance for WLAN PA or TX testing.

5 Operation AXRF is supplied with a high level C /.net programming interface and a soft front panel user interface. The soft front panel permits manual setup of noise figure, scalar or vector 2 port measurements. The UI displays results, traces and statistics for single point or swept measurement. Scalar Measurements In scalar mode AXRF-Q can perform gain or loss measurement between any 2 RF test ports. Amplifier gain sweep using scalar mode S Parameter Measurement In vector mode S parameters can be measured between ports pairs 1-2 and 3-4 on each 3094 module. Amplifier S parameter measurement sweep

6 Noise Figure/Gain Measurement Mode Noise figure and gain can be performed with a device connected between any 2 RF test ports Amplifier noise figure and gain measurement sweep Signal Measurements AXRF-Q can be used to generate complex modulated waveforms for use in stimulus response measurement on power amplifiers or for testing receiver sensitivity (PER/BER/BLER). AXRF-Q can also be used to capture I&Q samples for processing in application software using an array of measurement libraries available from Cobham or for use with other 3rd party signal processing tools.

7 IQCreator Waveform creation tools for generating waveforms emulating commercial and proprietary radio standards. RF signals can be played out of any AXRF-Q test port and used to stimulate receivers to measure sensitivity or used as input to power amplifiers when characterising output modulation quality, power and spectral containment. Measurement Libraries Measurements libraries for use in characterising signals in accordance with methods defined by commercial radio standards for use in cellular and wireless connectivity equipment. LTE FDD/TDD Uplink / Downlink UMTS Uplink / Downlink GSM/EDGE cdma2k / EV-DO Reverse link WLAN a,b,g,n,p,ac Bluetooth, BR/EDR/LE DECT WiMAX OFDMA Generic PSK, QAM, FSK, FM Spectrum Analysis Expansion slots Unused PXI slots are available to the user to populate with 3rd party instrumentation modules. Calibration AXRF-Q is calibrated in the line periodically using a portable automated calibrator accessory.

8 Specifications All specifications are defined following system warm up time of 30 mins and while operating at an ambient temperature of +23 +/- 5 degrees C, within 30 days of executing a user runtime calibration using AutoCal accessory unit (AXRF- ACAL-8) and with fan speed set to high. FREQUENCY CHARACTERISTICS Frequency Range Frequency Resolution Frequency Settling Time Single Sideband Phase Noise 65 MHz to 6 GHz Better than 0.1 Hz <400 us Loop Bandwidth High (default) <1.05 ms Loop Bandwidth Medium Loop Bandwidth (dbc/hz) Low Medium High (default) < < > Specification applies to Primary VSG output and VSA input To within 0.1 ppm of final frequency 20 khz offset RF TEST PORT SPECIFICATION RF INPUT Measurement Level Range Damage Level (max peak power) Return Loss Amplitude Measurement Repeatability Instantaneous bandwidth Amplitude Settling Time Average Noise Density Residual LO Power Residual Sideband Image Residual EVM Third Order Intermodulation (IM3) < 400 < 4000 < 6000 Up to +20 dbm (PEP) +30 dbm (PEP) +25 dbm (PEP) 50 Vdc Return Loss (db) typical >20 >21 >16 14 x 5 db range settings, <-45 dbm to +20 dbm With measurement level set to -20 dbm With measurement level set < -20 dbm ±0.05 db At 0 dbm, with fixed settings Instantaneous Bandwidth (MHz) < < 0.1 db of final value, 125 μs, typical < 0.5 db of final value with LO retuned, 300 μs Average Noise Density (dbm/hz) typical Residual LO Power (dbfs) typical Bandwidth (MHz) Residual Sideband Power (dbfs) typical < < LO tuning across harmonic filter bands, constant RF input signal level, varying input reference level Harmonic filter bands: 65, 109, 600, 1000, 1600, 2700, 4000, 5000, 6000 MHz At front panel with measurement level set below -45 dbm RCE (db) measured Input Level (dbm) Preamble Only, Phase Tracking On to +4 11ac VHT40 MCS ac VHT80 MCS to +5 Manual settings with 3094 RF attenuation 0-4 db and pre-amp disabled IM3 (dbc) typical At front panel with two tones, 200kHz apart, measurement level set to +3dBm

9 RF OUTPUT Max output level (1dB Compression point) Return Loss Level Resolution Level Accuracy 400 to 3000 < 4000 < 5000 < 6000 < 400 < 4000 < 6000 P1dB (dbm) > 15 > 14 > 13 >12 Return Loss (db) typical > 20 > 21 > 16 < 0.02 db Level Accuracy (±db) typical unspecified Applicable to signals at the RF test port from the primary VSG source Specifications for 2 nd SG for 2 tone measurement is given separately For a CW tone or PEP Measured at 0dBm at the calibration point and within ± 1 degree C of the calibration temperature Level Repeatability 0.02 db Measured at 0 dbm, fixed settings, frequency > 250 MHz Level Settling Time 0.1 db of final value 50 µs AXRF-Q at constant frequency: 0.5 db of final value 300 µs with LO tuning across harmonic filter bands: Harmonic filter bands: 65, 109, 600, 1000, 1600, 2700, 4000, 5000, 6000 MHz Non Harmonic Spurious < -62 dbc typical At -5 dbm output, for all offsets >500 Hz Fc 2 nd Harmonic (dbc) +3 rd Harmonic (dbc) < Harmonics <600-19* -13* Measured at 6 dbm output power < *Measured at multiples of MHz < < Sub Harmonics < -85 dbc typical At -5 dbm output, for all offsets >500 Hz Third Order Intercept Point (OIP3) Modulation Modes Modulation Bandwidth Residual LO Residual Sideband Image Residual EVM Fc (MHz) <3000 <6000 OIP3( dbm) typical CW, Internal I/Q Up to 200 MHz LO Residual Power (dbc) typical Bandwidth (MHz) Residual Sideband Image (dbc) typical With two -5 dbm tones 200 khz apart Maximum, valid within ±5 C of the last self-calibration temperature Maximum, valid within ±5 C of the last self-calibration temperature RCE (db) measured Output Level (dbm) Preamble Only, Phase Tracking On to to to to ac VHT40 MCS9 11ac VHT80 MCS9 Manual settings, 3094 coarse RF attenuation 5 to 7 db 11ac VHT80 MCS9 Manual settings, 3094 coarse RF attenuation 17 db

10 2nd SIGNAL GENERATOR (option 10 or option 14) With option 10 fitted With option 14 fitted For use generating 2 tone signals. Must be used together with Primary VSG output Frequency Range 65 MHz to 6 GHz A single API function sets the absolute frequency of both the primary and secondary tones Frequency Resolution Frequency Settling Time excludes residual amplitude settling As per primary VSG output As per primary VSG output <1.3 GHz, <1 Hz <3.3 GHz, <2 Hz <6 GHz, <4 Hz 0.3ms nominal Level Range As per primary VSG output Level Settling Time As per primary VSG output < 10 ms to within ±0.25 db Level Accuracy As per primary VSG output Modulation Bandwidth As per primary VSG output CW only SCALAR MEASUREMENTS Source port to measure port isolation Between 3094 modules (db) Between test ports on the same 3094 module (db) typical <1000 > 80 > > 80 > 65 Scalar Amplitude Measurement Accuracy ±0.2 db typ (at 0 db gain, 0 dbm level) After calibration with Autocal unit and within ±5 C of the last calibration temperature Unspecified between 109 MHz and 258 MHz Scalar Amplitude Measurement Repeatability ±0.05 db typ (at 0 db gain) At 0 dbm with repetitive instruction sequence Unspecified between 109 MHz and 258 MHz Scalar Amplitude Measurement Rate Mode NOISE MEASUREMENTS Calibration Type Noise Source ENR Capture Only (ms per point) typical Fast Power 1.4 Setup & Capture (ms per point) typical IF Capture IQ Capture Excess Noise Source db Figures will be dependent on PC configuration. 1.5ms delay required for setup in IQ capture mode Noise figure range > 2 db For a device with gain > 10dB Accuracy (±db) typical Noise figure accuracy 2000 <4000 > DUT: 4.5 db NF, 12 db Gain Measurement Repeatability <±0.35 db 16ksamples, 8Msps capture, 20 averages Noise measurement time Results 15 ms per point (typical) Noise figure (db), Gain (db) Inclusive of set-up Dependent on PC configuration

11 VECTOR MEASUREMENTS Source level range +5 to -35 dbm Accuracy Amplitude (±db) typical Phase (±deg) typical S11, S22 <0.4 <2.5 Open or Short, 0dBm <0.5 With 6dB return loss <0.7 With 12 db return loss <1.5 With 20 db return loss S12, S21 <0.1 <2.0 0 db Gain, 0 dbm Level Repeatability Amplitude (±db) typical Phase (±deg) typical S11, S22 <0.1 <2.0 Short, 0dBm level S12, S21 <0.1 <2.0 0 db Gain, 0 dbm Level Vector Measurement Rate Two port calibration type Results Broadband load measurement Capture Only (ms) typical INTERNAL FREQUENCY REFERENCE Setup & Capture (ms) typical Figures will be dependent on PC configuration Per set of 2-port S parameters Per point for return loss Short, open, load, through S11, S12, S21, S22, Return Loss Implemented with Autocal unit With suitable load Frequency 10 MHz Aging Rate ±1 ppm per year Temperature stability ±1 ppm Typical, 0 to 40 degrees C Output Level 1.65V pk-pk Nominal into 50 ohms Coupling AC REF IN Frequency Amplitude Coupling ENVIRONMENTAL Temperature Operating 0 to 40 C Storage 20 to 70 C COMPLIANCE 10 MHz ± 10 Hz Square wave V pk-pk typical Sinewave V pk-pk typical AC Relative Humidity RH: <80% 5 to 31 C decreasing linearly to 50% at 40 C, 2000m RH: 5 to 93% non-condensing, 2000m Into 50 ohm Into 50 ohm Meets essential requirements of applicable European Directives, as amended for CE marking: Safety EN (2010) Low-Voltage Directive (safety): 73/ 23/EEC EMC EN Electromagnetic Compatibility Directive (EMC): 9/336/EEC GENERAL Dimensions (WxHxL) 465.3mm x 191.5mm x 470.6mm Side carrying handle and feet fitted Maximum Weight Maximum DC Power Consumption <24kg AXRF-Q with options.. DC Rails DC Power 3.3V (A) 5V (A) -12V (A) 12 V (A) 5V AUX (A) (W) 8, , 10, , 14, , 9, Capacity Minimum external PC Requirements OS Win7/32 or Win7/64 x1 vacant PCIe half or full height expansion slot x1 USB 2.0 or 3.0 port 4Gb RAM PCIe interface card accessory compatible with NI PXIe-8360 must be fitted For use with AXRF AutoCal 8Gb recommended

12 Option 8 CPU Internal Controller Intel Core i7-3610qe, 2.3 GHz (base), 3.3 GHz (single-core Turbo Boost mode), 3.2 GHz (dual-core Turbo Boost mode), 3.1 GHz (quad-core Turbo Boost mode) Memory 4 GB (1 x 4 GB) Dual-channel 1600 MHz DDR3 RAM HDD 250 GB SATA (7200 rpm) Ethernet ports 2 10/100/1000BASE-TX (Gigabit) USB(3.0) ports 2 USB(2.0) ports 4 GPIB (IEEE 488) controller Serial port (RS232) 1 Parallel port 1 Watchdog/trigger SMB 1 Operating System 1 Windows 7 Professional Installed Software NI-VISA and NI drivers Drivers for all built-in I/O ports

13 Ordering Information Order as AXRF-Q Select options from below Hardware options Option Description Notes Number 7 External Controller Select either option 7 or 8 8 Internal Controller 9 Dual RF Sub-system See Note 10 2nd VSG per RF sub-system See Note 14 2nd CW Signal Generator per RF sub-system Select either option 10 or X4 RF test ports per RF sub-system Selection one from option 16, 17, 18, X16 RF test ports per RF sub-system 17 X8 RF test ports per RF sub-system 18 X12 RF test ports per RF sub-system Note Selection restrictions may apply where the maximum slot count is exceeded. Software options Option Number Description 100 GSM/EDGE 101 UMTS Uplink 102 cdma2000/1xev-do rev link 103 WLAN IEEE802.11a,b,g,n,p 104 WiMAX 105 DECT 106 Bluetooth BR/EDR/LE 107 LTE FDD FWD link 108 LTE TDD FWD link 109 TD-SCDMA 110 UMTS Downlink 111 Generic Analysis 113 WLAN ac (requires opt 103) 117 LTE FDD&TDD Downlink 999 Enable ALL Cellular Uplink & Connectivity options , 111, 113 Accessories Part Number Description AXRF-ACAL-8 AXRF AutoCal Unit 23448/906 GPIB cable adapter for Embedded controller (for use with option 8) 46662/927 2U Industrial PC i7 4770S CPU, 8GB RAM, 128GB SSD with keyboard, mouse and Win7 Pro FES (for use with option 7) 28541/169 PCIe Single Port Interface Card (for use with option 7) 28541/172 PCIe Dual Port Interface Card (for use with option 7) 23448/911 MXIe 3m Coaxial Interface Cable (for use with option 7) 28541/200 RF Switch Module NI PXI GHz 50 ohm Solid State Quad 2x1 (requires 1 vacant slot) 28541/400 RF Switch Module NI PXI GHz 50 ohm Solid State 8x1 Multiplexer (requires 1 vacant slot) 22326/114 Front Mounting Rack Mount kit