WBX

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 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

Frequency Range: 50MHz - 2.2GHz Versions: 40MHz / 120MHz Power Output: 100mW Noise Figure: 5dB

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

WBX Schematics

WBX FE Schematics

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

Certificate of Volatility

WBX-40/WBX-120

• Media:volatility UBX CBX WBX SBX r1 1.pdf

RF Performance Data

• WBX without UHD Corrections

Downloads

FPGA Resources

UHD Stable Binaries

UHD Source Code on Github