UBX

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Device Overview

The UBX daughterboard is a full-duplex wideband transceiver that covers frequencies from 10 MHz to 6 GHz. Coherent and phase-aligned operation across multiple UBX daughterboards on USRP X Series motherboards enables users to explore MIMO and direction finding applications. The UBX daughterboard works interchangeably with other USRP daughterboards and is supported by the USRP Hardware Driver™ (UHD) software API for seamless integration into existing applications.

The UBX is capable of phase coherent operation, and therefore is suitable for MIMO and Phased Array applications, on the X Series. Additionally this capability is only available on the X Series devices.

Key Features

  • Frequency Range: 10 MHz - 6 GHz
  • Versions: 40MHz / 160MHz
  • RF shielding
  • Full duplex operation with independent TX and RX frequencies
  • Synthesizer synchronization for applications requiring coherent or
    phase-aligned operation, supported on USRP X Series motherboards only
Product ubx 40.png
Product ubx 160.png

RF Specifications

  • Noise Figure
    • 10 - 20 MHz: 3 - 4 dB
    • 20 - 500 MHz: 2 - 3 dB
    • 0.5 - 1.5 GHz: 2 - 4 dB
    • 1.5 - 4 GHz: 4 - 5 dB
    • 4 - 6 GHz: 5-7 dB
  • RX IIP3 (Max)*
    • 10** - 35 MHz: 4 - 10 dBm
    • 35 - 500 MHz: 10 - 12 dBm
    • 0.5 - 1.5 GHz: 8 - 13 dBm
    • 1.5 - 6 GHz: 8 - 9 dBm
  • RX IQ Imbalance
    • 10 MHz - 6 GHz: < -30dBc
  • TX Power (Max)
    • 10 MHz - 3.5 GHz: > 20 dBm
    • 3.5 - 4 GHz: 18 - 20 dBm
    • 4 - 5 GHz: 13 - 18 dBm
    • 5 - 6 GHz: 7 - 13 dBm
  • TX OIP3
    • 10 - 500 MHz: > 40 dBm
    • 0.5 - 3 GHz: > 36 dBm
    • 3 - 5 GHz: > 30 dBm
    • 5 - 6 GHz: > 26 dBm
  • TX IQ Imbalance
    • 10 MHz - 6 GHz: < -30 dBc

Note: * Noise Figure < 10 dB

Note: ** High Gain at 10 MHz

Note: The UBX 160 transmitter path has 160 MHz of bandwidth throughout the full frequency range of the device; the receiver path has 84 MHz of bandwidth for center frequencies from 10 MHz to 500 MHz.

Hardware Specifications

  • Ettus Research recommends to always use the latest stable version of UHD

UBX-40

  • Current Hardware Revision: 1
  • Minimum version of UHD required: 3.8.2

UBX-160

  • Current Hardware Revision: 1
  • Minimum version of UHD required: 3.8.2

Environmental Specifications

Operating Temperature Range

  • 0-40 °C

Operating Humidity Range

  • 10% to 90% non-condensing

USRP Compatibility

UBX-40

  • N or X Series

UBX-160

  • X Series only

Schematics

UBX

UBX Schematics

Key Component Datasheets

Part Number Description Schematic ID (Page)
MAX2871 Fractional/Integer-N Synthesizer/VCO U3 (3); U9 (5); U19 (7); U23 (9)
ADL5375-05 Quadrature Modulator U22 (8)
LFCN-2250+ Low Pass Filter F1 (3); F24 (7); F34, F35 (10)
LTC5510 Active Mixer U15 (6)
LFCN-490+ Low Pass Filter F12 (5); F15 (6); F26 (7); F31 (9); F33, F36 (10)
HMC624LP4E ATTENUATOR U16 (6)
NBB-400 Amplifier U13 (6); U30 (11)
PHA-1+ Amplifier U31 (11)
ADA4927-2 Differential ADC Driver U6 (4)
ADL5380 Quadrature Demodulator U8 (4)
MGA-62563 Low Noise Amplifier U36 (11)
LFCN-1700+ Low Pass Filter F41 (11)
VMMK-3603 Low Noise Amplifier U34 (11)
LFCN-2600+ Low Pass Filter F14, F17 (6)
855916 SAW Filter F16 (6)
LTC5510 Active Mixer U15 (6); U28 (10)
LFCN-2600+ Low Pass Filter F14, F17 (10)
TCM1-63AX+ RF Transformer T1 (3); T2, T3 (4); T7 (8)
ADA4927-2 Differential ADC Driver U6 (4)
AD8591 Operational Amplifiers U7 (4)
ADL5380 Quadrature Demodulator U8 (4)
ZXTC2062E6 TRANSISTORS Q1 (6)
HMC624ALP4E ATTENUATOR U16 (6); U29 (10)
LFCN-800+ Low Pass Filter F2 (3); F25 (7)
ADP7104-3.3 CMOS LDO U4, U5 (3); U10, U11 (5); U20, U21 (7); U24, U25 (9); U48 (13)
ADL5375-05 Quadrature Modulator U22 (8)
LTC5510 Active Mixer U28 (10)
24LC024 EEPROM U38, U39 (12)
ADP7104-5.0 CMOS LDO U41, U42, U43, U44, U45, U46, U47 (13)
ZXTC2062E6 TRANSISTORS Q2, Q3, Q4, Q5 (13)

RF Connectors

  • The UBX daughterboard features female SMA 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

UBX-40/UBX-160

Important Notes

  • A larger 24W (6V, 4A) power supply is required when using a UBX-40 daughterboard and integrated GPS Disciplined Oscillator accessory together in a USRP2, USRP N200, or USRP N210 device.
  • The UBX-160 transmitter path has 160 MHz of bandwidth throughout the full frequency range of the device; the receiver path has 84 MHz of bandwidth for center frequencies from 10 MHz to 500 MHz.

Performance Data

Downloads

FPGA Resources

UHD Stable Binaries

UHD Source Code on Github