Software Defined Radio 2017-09-14T14:15:47+00:00

Software Defined Radio

Software Defined Radio (SDR) is a virtualised radio with operating parameters configured in software running commodity hardware. Until now this programmability has been the missing piece in the virtualised communications network, extending software control from the core to the Radio Access Network (RAN). This requires a new type of silicon, the field programmable RF (FPRF) device to cater for any deployment with optimum cost and flexibility. Lime Micro is the leader in this field with FPRF being a fundamental component of LimeSDR.

LimeSDR is a disruptive radio access innovation platform allowing wireless providers and operators to rapidly offer new services, and participate successfully in otherwise unprofitable business sectors. LimeSDR allows any device to be enhanced with a software enabled radio, opening up the possibility of embedding IOT gateways, or even an LTE small cell in everyday consumer products. Our radio solutions can be deployed anywhere connecting to any processor creating networks that are modular, low maintenance and scalable.

Software defined, virtualised radio is clearly established as the way forward for the wireless industry offering increased agility, cost savings and the opportunity to scale fast and explore new models of deployment.

Lime has developed a suite of products based on the Lime SDR platform.

  • LimeSDR   
  • LimeSDR Mini
  • LimeNET Mini
  • LimeNET

LimeSDR & LimeSDR Mini

The hugely popular LimeSDR – and new LimeSDR Mini –  use Lime’s latest generation of field programmable RF transceivers, and an app-based ecosystem to simplify the process of designing wireless applications.

The LimeSDR boards deliver the wireless data, while the CPU provides the computing power to both process incoming signals, and generate data for transmission by LimeSDR to all other devices.

Costing from $99, these powerful SDR boards are backed by operators BT/EE and Vodafone and have been designed to bring wireless access to a greater range of developers. LimeSDR can run pre developed apps via Lime’s Ubuntu App Store enabling developers to download technology stacks and package their own applications quickly, easily and reliably.

Visit Crowd Supply to back the latest campaign.

Lime SDR Technical Overview

  • RF Transceiver: Lime Microsystems LMS7002M MIMO FPRF
  • FPGA: Altera Cyclone IV EP4CE40F23 – also compatible with EP4CE30F23
  • Memory: 256 MBytes DDR2 SDRAM
  • USB 3.0 controller: Cypress USB 3.0 CYUSB3014-BZXC
  • Oscillator: Rakon RPT7050A @30.72MHz
  • Continuous frequency range: 100 kHz – 3.8 GHz
  • Bandwidth: 61.44 MHz
  • RF connection: 10 U.FL connectors (6 RX, 4 TX)
  • Power Output (CW): up to 10 dBm
  • Multiplexing: 2×2 MIMO
  • Power: micro USB connector or optional external power supply
  • Status indicators: programmable LEDs
  • Dimensions: 100 mm x 60 mm

LimeNET Mini

LimeNET Mini is a Software Defined Radio (SDR) small cell Network in a Box (NIB) for mobile and IoT applications, based on Intel i7 processor and open Source LimeSDR.    It acts as a mini access point that can cater for any wireless standard ranging from Zigbee, Laura, NBIOT to high data rate applications including LTE. This combination makes it an ideal implementation for Enterprise, small cell and mobile base station applications.

LimeNET Mini Technical Overview

  • Intel Core i7-7500U CPU 2 Core 2.7/3.5 GHz
  • 32GB DDR4 2133MHz memory, 512 GB SSD
  • USB 3.1 type C, USB 3.1, 2x USB3.0, Gigabit Ethernet port

LimeNET MINI is still available via the Crowd Supply Platform and was successfully funded – including backing from Vodafone. 


LimeNET is a Software Defined Radio (SDR), high capacity Network In a Box (NIB) for mobile and IoT applications, based on Intel i7 processor and Open Source LimeSDR PCIe card.  It covers the same applications as the mini version for wide area networks.  LimeNET can address rural coverage and Lime is working with UK mobile operator EE (part of British Telecom) to run a pilot of LimeNET to provide coverage in remote areas of Scotland.

Lime Net Technical Overview

  • Intel Core I7-6950X CPU 10 Core 2011-3 140W 3.0GHz 25MB Cache
  • 64GB DDR4 2133MHz memory, 1TB SSD
  • 4x USB3.0, 2x USB3.1, 2x Gigabit Ethernet ports

LimeNET has now pre launched on the Crowd Supply Platform.