Lime Microsystems

Lime Microsystems specializes in field-programmable radio frequency (FPRF) transceivers and software-defined radio (SDR) platforms for next-generation wireless communications systems. The company's core technology is the LMS7002M transceiver, which powers various products in their LimeSDR family. These devices offer configurable radio capabilities, covering frequencies up to 3.8GHz with over 100MHz of bandwidth. Lime's products are designed to be highly flexible, allowing users to reconfigure radios for experimentation, rapid deployment of new protocols, and expansion of cellular and other radio-based networks.

The company's flagship product line includes the LimeSDR XTRX, a mini-PCI Express card that can be integrated into various host systems, from low-power devices like the Raspberry Pi to high-performance servers. This product features an on-board AMD-Xilinx field-programmable gate array (FPGA) that works with the LMS7002M to handle key physical layer radio functionality. The LimeSDR XTRX offers two receive and two transmit channels with 30.72MHz of bandwidth each, covering a frequency range from 30MHz to 3.8GHz, with a maximum transmission power of 10dBm.

Lime Microsystems' technology has been utilized in various projects, including the development of flexible and efficient 5G network solutions. The company participates in initiatives such as the Flex-5G and Secure Wideband PA Platform projects, which aim to improve the performance, efficiency, and security of 5G networks using software-defined radio technology. These projects leverage commodity off-the-shelf general-purpose compute hardware combined with Lime's field-programmable radio technology.

Key customers and partnerships

Lime Microsystems has been involved in several collaborative projects and partnerships. In January 2023, the company was part of a consortium that won the UK & Republic of Korea Open RAN R&D Collaboration competition for the Flexi-DAS network solution. This project, funded by the Department for Digital, Culture, Media, and Sport (DCMS), involves partners such as AWTG, BAI Communications, Virgin Media O2, SOLiD Inc., RFHIC Corporation, and the University of Surrey 5G/6G Innovation Centre. The goal is to develop agile network solutions based on distributed antenna systems and reconfigurable intelligent surfaces technologies.