Difference between revisions of "UBX"

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(→‎Daughterboard Properties)
(→‎RF Specifications)
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==RF Specifications==
 
==RF Specifications==
−
* Noise Figure
+
'''Freq Range'''
−
** 10 - 20 MHz: 3 - 4 dB
+
* 10MHz - 6GHz
−
** 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)*
+
'''Noise Figure'''
−
** 10** - 35 MHz: 4 - 10 dBm
+
* 10 MHz - 500 MHz: 3 - 4 dB
−
** 35 - 500 MHz: 10 - 12 dBm
+
* 500 MHz - 1.5 GHz: 2 - 3 dB
−
** 0.5 - 1.5 GHz: 8 - 13 dBm
+
* 1.5GHz - 6GHz: 4 - 10 dB
−
** 1.5 - 6 GHz: 8 - 9 dBm
+
  
−
*RX IQ Imbalance
+
'''RX IIP3 (Max)'''
−
** 10 MHz - 6 GHz: < -30dBc
+
* 10 MHz - 6 GHz: 8 - 9 dBm
  
−
*TX Power (Max)
+
'''RX IQ Imbalance'''
−
** 10 MHz - 3.5 GHz: > 20 dBm
+
* 10 MHz - 6 GHz: < -30dBc
−
** 3.5 - 4 GHz: 18 - 20 dBm
+
−
** 4 - 5 GHz: 13 - 18 dBm
+
−
** 5 - 6 GHz: 7 - 13 dBm
+
  
−
*TX OIP3
+
'''TX Power (Max)'''
−
** 10 - 500 MHz: > 40 dBm
+
* 10 MHz - 3 GHz: 20 dBm
−
** 0.5 - 3 GHz: > 36 dBm
+
* 3 - 6 GHz: 8 - 20 dBm  
−
** 3 - 5 GHz: > 30 dBm
+
−
** 5 - 6 GHz: > 26 dBm
+
  
−
*TX IQ Imbalance
+
'''TX OIP3'''
−
** 10 MHz - 6 GHz: < -30 dBc
+
* 10 - 500 MHz: 41 dBm
 +
* 0.5 - 3 GHz: 36 dBm
 +
* 3 - 6 GHz: 26 dBm - 36 dBm
  
−
Note: * Noise Figure < 10 dB
+
'''TX IQ Imbalance'''
−
 
+
* 10 MHz - 6 GHz: < -30 dBc
−
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.
 
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.

Revision as of 12:17, 22 June 2016

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

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 UBX board in full-duplex mode, the receive antenna will always be set to RX2, regardless of the settings.

Gains

  • Transmit Gains: PGA0, Range: 0-31.5dB
  • Receive Gains: PGA0, Range: 0-31.5dB

Bandwidths

  • UBX: 40 MHz, RX & TX
  • UBX-160: 160 MHz, RX & TX

Sensors

  • lo_locked: boolean for LO lock state

LEDs

  • LOCK: Synthesizer Lock Detect
  • TX/RX TXD: Transmitting on TX/RX antenna port
  • TX/RX RXD: Receiving on TX/RX antenna port
  • RX2 RXD: Receiving on RX2 antenna port

RF Specifications

Freq Range

  • 10MHz - 6GHz

Noise Figure

  • 10 MHz - 500 MHz: 3 - 4 dB
  • 500 MHz - 1.5 GHz: 2 - 3 dB
  • 1.5GHz - 6GHz: 4 - 10 dB

RX IIP3 (Max)

  • 10 MHz - 6 GHz: 8 - 9 dBm

RX IQ Imbalance

  • 10 MHz - 6 GHz: < -30dBc

TX Power (Max)

  • 10 MHz - 3 GHz: 20 dBm
  • 3 - 6 GHz: 8 - 20 dBm

TX OIP3

  • 10 - 500 MHz: 41 dBm
  • 0.5 - 3 GHz: 36 dBm
  • 3 - 6 GHz: 26 dBm - 36 dBm

TX IQ Imbalance

  • 10 MHz - 6 GHz: < -30 dBc

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

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