The Access Point
The heart of DTMD Access Point is a PC based software defined hardware, a platform designed for future wireless communications including both fixed and mobile, satellite and terrestrial based applications.
The hardware can also be used for:
| Single Carrier | AM, PM, FM, BPSK, QPSK, COFDM, QAM, MSK, other variants and higher modulation schemes |
| Multi Carrier | OFDM, OFDMA, SC-FDMA, MC-CDMA, Multi Antenna MIMO, Beam forming, SDMA, Spatial Diversity and Multiplexing |
| Communication Standards | 3GPP, CDMA2000, TD SCDMA, 1xEVDO, WCDMA, GSM, LTE, IEEE, WIMAX 16a,16d,16e, 802.11a/b/g/n, HIPERLAN, 802.15.4 (ZigBee), Bluetooth, RFID, Broadcast Technology, DVB (set top box), DAB (world space) |
| Others | Radar, SIGINT, COMINT, MILCOM |
The hardware is a 2X2 MIMO Platform or 1X1 Platform with USB 3.0 based Host (PC) interface. The hardware architecture covers 50 MHz to 6 GHz expandable upto 24Gh with an active 4X multiplier module. It supports a channel bandwidth of 200KHz to 56MHz. The driver supports Windows and Linux operating systems and supports direct integration with MATLAB, SIMULINK, LABVIEW, MS VC++ and MS VC#. The hardware is USB bus powered developed using the latest USB 3.0 interface and can stream IQ data upto 320MBytes/Sec in realtime to/from PC making it 80MHz realtime IQ data streaming.
Technical Specifications
On board FPGA with Xilinx Spartan-6
RF 2×2 transceiver with integrated 12-bit DACs and ADCs
Programmable Sampling Rates from 200KHz to 64MHz
Onboard configurable PLL’s for synchronized clocking for all Tx and RX paths
Superior receiver sensitivity with a noise figure of 7dB at 800 MHz LO
Built-in LO generation from 47MHz to 6GHz
Programmable Lowpass filters for both Tx and Rx chains
Tuneable 26MHz Crystal, with 25 PPb accuracy
Real-time monitor and control signals for manual gain
Independent automatic gain control
Highly linear broadband transmitter
Integrated fractional-N synthesizers
76 dB Receiver gain control with 0.5dB step
60 dB Transmitter gain control with 0.5dB step
DC offset cancellation feature
Supports full duplex TDD operation
I2C and UART interface
| RF Tuning Range | 50MHz to 6.0 GHz |
| RF Expansion | Upto 24Ghz with 4X Multiplier Module |
| Channel Bandwidth | <200 kHz to 56 MHz |
| Dual RX | 2 single-ended inputs on SMA with 50 Ohms |
| Dual TX | 2 single-ended outputs on SMA with 50 Ohms |
| RX gain control | 0 dB to 70 dB |
| TX EVM | ≤−40 dB |
| TX Noise | ≤−150 dBm/Hz noise floor |
| Power Output | +23dBm |
| Noise figure | ~8dB |
| Power Source | USB bus or via External 5V DC |
| Antenna System | Wafer Phased Array (optional +30 to +33 dBm expansion) |
The hardware is more than just an RF transceiver. The FPGA can act as an accelerator of any type from turbo decoding to video transcoding. Modular expansion board design for adding GPIO, Ethernet, 1PPS sync signal, frequency range expansion and power outputs. Capable of operating as a spectrum analyzer, vector signal analyzer and vector signal generator.
