WBX
Contents
- 1 Device Overview
- 2 Key Features
- 3 Daughterboard Specifications
- 4 RF Specifications
- 5 RF Performance Data
- 6 Hardware Specifications
- 7 Environmental Specifications
- 8 USRP Compatibility
- 9 Phase Synchronization
- 10 Schematics
- 11 Key Component Datasheets
- 12 Mechanical Information
- 13 RF Connectors
- 14 Certifications
- 15 Certificate of Volatility
- 16 Downloads
Device Overview
The WBX is a wide bandwidth transceiver that provides up to 100 mW of output power and a noise figure of 5 dB. The LO's for the receive and transmit chains operate independently. The WBX daughterboard is supported by the USRP Hardware Driver™ (UHD) software API for seamless integration into existing applications.
The WBX provides phase coherent operation, although with a 180-degree ambiguity, which must be calibrated out in the application. For phase-coherent applications, Ettus Research recommends the SBX with the N200/N210 or the SBX or UBX with the X300/X310.
Key Features
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Daughterboard Specifications
Features
- 2 quadrature frontends (1 transmit, 1 receive)
- Defaults to direct conversion
- Can be used in low IF mode through lo_offset with uhd::tune_request_t
- Independent receive and transmit LO's and synthesizers
- Allows for full-duplex operation on different transmit and receive frequencies
- Can be set to use Integer-N tuning for better spur performance with uhd::tune_request_t
Antennas
Transmit: TX/RX
Receive: TX/RX or RX2
- Frontend 0: Complex baseband signal for selected antenna
- Note: The user may set the receive antenna to be TX/RX or RX2. However, when using a WBX board in full-duplex mode, the receive antenna will always be set to RX2, regardless of the settings.
Gains
- Transmit Gains: PGA0, Range: 0-25dB
- Receive Gains: PGA0, Range: 0-31.5dB
Bandwidths
- WBX: 40 MHz, RX & TX
- WBX-120: 120 MHz, RX & TX
Sensors
- lo_locked: boolean for LO lock state
RF Specifications
Freq Range
- 50MHz - 2.2GHz
Noise Figure
- 2 - 4 dB @ (50MHz ~ 1.2GHz)
- 4 - 8 dB @ (1.2GHz ~ 2.2GHz)
RX IIP3 (Max)
- 10 - 18 dBm
RX IQ Imbalance
- -30 dBc
TX Power (Max)
- 18 - 20 dBm @ (50MHz ~ 1.4 GHz)
- 12 - 18dBm @ (1.4GHz ~ 2.2 GHz)
TX OIP3
- 30 - 32 dBm @ (50MHz ~ 800MHz)
- 25 - 30 dBm @ (800MHz ~ 2.2GHz)
TX IQ Imbalance
- -30 dBc @ (50MHz ~ 1.9GHz)
- - 24 dBc @ (1.9GHz ~ 2.2GHz)
Input/Output Impedance
- All RF Ports are matched to 50 Ohm with -10dB or better return loss generally. Detailed test is pending.
Input Power Levels
- The maximum input power for the WBX is -15 dBm.
RF Performance Data
Hardware Specifications
- Ettus Research recommends to always use the latest stable version of UHD
WBX-40
- Current Hardware Revision: 1
- Minimum version of UHD required: 3.8.0
WBX-120
- Current Hardware Revision: 1
- Minimum version of UHD required: 3.8.0
Environmental Specifications
Operating Temperature Range
- 0-40 °C
Operating Humidity Range
- 10% to 90% non-condensing
USRP Compatibility
WBX-40
- N or X Series
WBX-120
- X Series only
Phase Synchronization
The WBX daughterboard is capable of phase-synchronous operation, but with a with a 180-degree ambiguity, which must be calibrated out in the user application. The SBX, UBX, TwinRX daughterboards are recommended for phase-coherent applications.
Schematics
WBX
Key Component Datasheets
| Part Number | Description | Schematic ID (Page) |
|---|---|---|
| ADA4937 | Ultralow Distortion Differential ADC Driver | U304 (2) |
| ADP3336 | High Accuracy Ultralow IQ, 500 mA anyCAP® Adjustable Low Dropout Regulator | U306, U308 (2); U503, U505 (4) |
| ADL5387 | 50 MHz to 2 GHz Quadrature Demodulator | U307 (2) |
| ADL5385 | 50 MHz to 2200 MHz Quadrature Modulator | U501 (4,5) |
| ADF4350 / ADF4351 | Wideband Synthesizer with Integrated VCO | U201 (3); U401 (5) |
| HMC472LP4 | Attenuator | U302 (2); U504 (4,5) |
| MGA82563 | Amplifier | U313 (2) |
| 24LC024 | EEPROM | U202 (3); U403 (5) |
| GVA−84+ | Amplifier | U502 (4) |
Mechanical Information
Drawings
RF Connectors
- The WBX daughterboard features female MCX connectors for both the TX/RX and RX2 connectors.
Certifications
RoHS
As of December 1st, 2010 all Ettus Research products are RoHS compliant unless otherwise noted. More information can be found at http://ettus.com/legal/rohs-information
China RoHS
Management Methods for Controlling Pollution Caused by Electronic Information Products Regulation
Chinese Customers
National Instruments is in compliance with the Chinese policy on the Restriction of Hazardous Substances (RoHS) used in Electronic Information Products. For more information about the National Instruments China RoHS compliance, visit ni.com/environment/rohs_china.
