WBX
From Ettus Knowledge Base
Contents
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 does not provided phase coherent operation, and therefore is not recommended for MIMO and Phased Array applications.
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)
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
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) |
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
