CAT-4 High Speed Broadband Access Chipset

Architected to support the most advanced LTE and LTE-A standards, this chipset and software platform sets the benchmark for high speed broadband access performance, power consumption and cost.

The chipset includes a baseband processor and an RF transceiver as a highly optimized and system-tuned solution, together with a set of turnkey hardware and software reference designs, accelerating product time to market and minimizing development and carrier acceptance investment.

The ALT3800 chipset is used in a wide variety of devices, including tablets, netbooks, connected consumer devices, dongles, indoor and outdoor CPEs, mobile hotspots and M2M modules.

The ALT3800 leverages highly mature, carrier-certified and mass market deployed software as well as a comprehensive manufacturing and test solution ecosystem.



  • 3GPP Release 9 and GCF Compliant
  • FDD and TDD support with real time handover
  • CAT-4 throughputs (150/50 Mbps DL/UL)
  • Evolved Multicast Broadcast Service (eMBMS)
  • Integrated VoLTE with HD voice support
  • Integrated IMS and OTA-DM

SoC and Software

  • 3rd generation Software Defined Radio (SDR) architecture featuring high flexibility with extremely low power
  • High performance CPU subsystem with native Linux and user space application support
  • Pre-integrated high performance Wi-Fi routing stack/drivers
  • Extremely low power consumption
  • Robust, carrier certified and field hardened protocol stack and L1 software
  • OS drivers – Android, Linux, Win 7/8.1, MAC OSX, Chromebook

RF Features

  • System-level optimized and tuned RF transceiver
  • Six RF ports supporting multiple FDD/TDD band combinations between 400 – 3800 MHz
  • SAW-less TX operation
  • Integrated LNAs


  • USB2.0/HS/OTG, HSIC, SDIO 3.0 host/device, I2S/PCM, RMII/RGMII, USIM, UART

Interference cancellation

  • Altair’s proprietary INCA™  noise cancellation technology