Dual WiMax RF Module
The SMT903 is a single width TIM that plugs onto an SLB base module such as the SMT368 (Virtex-4 FPGA) or the SMT351T (Virtex-5 LXT/SXT FPGA) or other SLB base module. It incorporates 2 Maxim Wimax Transceivers that operate at 2.5GHz (MAX2837 – IEEE802.16-2004). The transceivers integrate a power amplifier driver, receive/transmit mixer, low-noise amplifier, receive/transmit filters, synthesizer, VCO, receive automatic gain control, and transmit power control. Transceivers are to work in the 2.4 – 2.7 GHz band.
Both RF transceivers are coupled with a Mixed-Signal Front End chip from Analog Devices (AD9863) that integrates two 12-bit ADCs (50MSPS) as well as two 12-bit DACs (200MSPS using interpolation), to provide analog and digital conversions and ensure a sufficient level of precision for Wimax applications.
The Xilinx FPGA on the base module is responsible for handling data or control commands to/from Comports (TIM-40 standard), Sundance High-speed Bus (SHB) or Rocket-IO Serial Link (RSL). These interfaces are compatible with a wide range of Sundance’s modules. Typically, the FPGA can implement control and baseband processing.
Converter configuration, sampling rates and transceiver modes are set via internal control registers stored inside the FPGA and accessible via Comport.
The purpose of the SMT903 is to provide customers with a hardware module in order to develop or implement a Wimax core and/or fixed applications. All necessary control interfaces are provided with the board. Note that no Wimax core is provided with the board.
- Dual 50MSPS, 12-bit ADC
- Dual 200MSPS, 12-bit DAC
- Dual 2.5GHz WiMax Transceivers
- Sundance Local Bus