Difference between revisions of "SBX"

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(Key Features)
(Antennas)
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Transmit: '''TX/RX'''
 
Transmit: '''TX/RX'''
  
Receive: '''RX2'''
+
Receive: '''TX/RX''' or '''RX2'''
 
* '''Frontend 0:''' Complex baseband signal for selected antenna
 
* '''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 an SBX board in full-duplex mode, the receive antenna will always be set to RX2, regardless of the settings.
 
* '''Note:''' The user may set the receive antenna to be TX/RX or RX2. However, when using an SBX board in full-duplex mode, the receive antenna will always be set to RX2, regardless of the settings.

Revision as of 15:52, 10 June 2016

Device Overview

The SBX is a wide bandwidth transceiver that provides up to 100 mW of output power, and a typical noise figure of 5 dB. The local oscillators for the receive and transmit chains operate independently, which allows dual-band operation. The SBX is MIMO capable, and provides 40 MHz or 120 MHz of bandwidth. The SBX is ideal for applications requiring access to a variety of bands in the 400 MHz-4400 MHz range. Example application areas include WiFi, WiMax, S-band transceivers and 2.4 GHz ISM band transceivers.

The SBX is capable of phase coherent operation, and therefore is suitable for MIMO and Phased Array applications.

Key Features

  • Frequency Range: 400MHz - 4.4GHz
  • Versions: 40MHz / 120MHz
  • Power Output: 100mW
Product sbx 40.jpg
Product sbx 120.jpg

Daughterboard Properties

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 an SBX 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

  • SBX: 40 MHz, RX & TX
  • SBX-120: 120 MHz, RX & TX

Sensors

  • lo_locked: boolean for LO lock state

LEDs

  • All LEDs flash when daughterboard control is initialized
  • TX LD: Transmit Synthesizer Lock Detect
  • TX/RX: Receiver on TX/RX antenna port (No TX)
  • RX LD: Receive Synthesizer Lock Detect
  • RX1/RX2: Receiver on RX2 antenna port

Hardware Specifications

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

SBX

  • Current Hardware Revision: 5.1
  • 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

SBX-40

  • N or X Series

SBX-120

  • X Series only

Schematics

SBX

SBX Schematics

Key Component Datasheets

Part Number Description Schematic ID (Page)
MGA82563 Amplifier U1, U5, U4 (1)
AS225-313LF SPDT Switch U3, U6 (1)
HMC624LP4E ATTENUATOR U2, U7 (1)
LFCN-5850+ Low Pass Filter FL1 (1)
PHA-1+ Amplifier U8 (1)
GVA-84+ Amplifier U9 (1)
ADL5380ACPZ Quadrature Demodulator U11 (2)
ADA4927-2YCPZ Differential ADC Driver U10 (2)
AD8591ARTZ-REEL Amplifiers U31 (2)
ADF4350BCPZ Synthesizer with Integrated VCO U23 (3); U24 (6)
SKY13267 Diversity Switch U12 (3); U25 (6)
LFCN-1200+ Low Pass Filter FL13 (3); FL12 (6)
TC1-1-43A+ RF Transformer T3 (2); T2, T5 (3); T4, T6 (6)
LP3878MR-ADJ Voltage Regulator U13, U14 (4); U19, U20 (5)
NC7WZ04P6X Dual Inverter U15, U16 (4); U21 (5); U27 (6); U26 (3)
24LC024 EEPROM U17 (4); U22 (5)
ADL5375 Quadrature Modulator U18 (5)

RF Connectors

  • The SBX 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

SBX-40/SBX-120

Performance Data

Downloads

FPGA Resources

UHD Stable Binaries

UHD Source Code on Github