SDR-IP
SDR over IP
Coming Soon
The high performance SDR-IP is an internet protocol (TCP/IP) software defined radio. The SDR-IP utilizes a high speed FPGA and a 16 bit direct sampling ADC with fully upgradable plug-in interface board and firmware.
The SDR-IP uses a high performance 80 MHz, 16 bit ADC with both dithering and randomization for best performance. The output I/Q bandwidth is configurable via software. PC communications are handled over a 100 base-T port using 24 bit I/Q words. A TCP connection is used to control the radio and a UDP connection is used to transfer the data back to the PC. A simple TCP command with center frequency, filter, attenuator setting and decimation rate is all that is needed to get the SDR-IP streaming data. The ethernet port allows easy interfacing to Mac OSX, Windows, and Linux without the need of additional drivers. The communications protocol will be fully documented. The use of IP protocol, allows the radio to be operated over the intranet. The SDR-IP ships with the latest version of SpectraVue software for Windows.
PRELIMINARY
Frequency Range: 0.01 - 32 MHz *
Digital Down Converter: Xilinx Spartan 3E
PC Interface: Ethernet 100 base-T (UDP/TCP/IP)
Filters: 32 bit ,120+ dB 90% Alias Free BW
Decimation Rate: Variable 70-1600 (in 10 increm.)
Output Sample Rate: 39 KHz to 1.15 MHz @ 24b IQ
Flatness: <0.1 dB
Dynamic Range: 105 dB
MDS: -132dBm in 500 Hz BW
Analog to Digital Converter: 16bit w/ Dither
Preselection: 10 Filters
Attenuators: 0, -10dB, -20dB, -30dB
Sample Rate: 80 MHz
Memory: 65536 x 16 bit samples (256K x 16 option)
External Radio Control: Built-in RS-232 port
Dimensions: 210 x 70 x 180 mm
Display: 16 x 2 Character LED LCD
Power: 5 Volts DC @ 1.5 Amp **
Connections: 4 x BNC (RF In, Ext Ref, Trigger, IF Out) , RS-232, Pulse Out, Ethernet, Power.
Expansion: Internal Downconverter, Internal 10 MHz Phase/Frequency Lock.
Price (base configuration): Estimated MSRP $2999.00, EURO 2250
Introducing the SDR-IP digital radio
Future Options
TRIG: Adds Trigger to lock phase of multiple
receivers at multiple locations.
REF-ULN: Adds Low Noise OVCXO
(+/- 1ppm) plus frequency locking to
10 MHz reference.
FM-RADAR: Adds 88-108 MHz internal
10 MHz locked downconverter for passive /
stealth RADAR applications.
70-CONV: Adds 68-72 MHz internal 10 MHz
locked downconverter for IF applications.
** PRELIMINARY SPECS MAY CHANGE WITHOUT NOTICE.
The digital down converter used in the SDR-IP is very high performance. The digital filters offer over 120dB of image rejection in a 90% of Fs bandwidth. This gives a very efficient 1 MHz usable BW for a 1.11 MHz output sample rate. The high performance receive modes use 32 bit precision and are rounded to 24 bits before being sent to the PC. The Digital Down Converter (DDC) does not require loading of any coefficients. The filter is automatically configured by specifying the decimation rate. This makes it extremely easy to control and program the SDR-IP.
The analog front end uses a high dynamic range preamp with a bank of 10 preselector filters and 2 switchable attenuators. RF switching uses relays for better IMD.
The SDR-IP can be configured with a ultra low phase noise encode clock option (REF-ULN). This oscillator can be locked to reference clocks like GPS and Cesium standards. A trigger option allows the synchronization of multiple SDR-IP receivers to trigger signals or 1PPS pulses from GPS to within ~50nS. This allows many SDR-IP receivers to be used in radio holography, direction finding, interferometry and radar applications. The SDR-IP is ideal for passive covert RADAR using FM broadcast stations. The ethernet I/Q data is serialized so that streams from multiple receivers can be processed coherently (processing software not supplied). When not externally locked, the optional oscillator has a stability of +/- 1 ppm over temperature. The phase noise at 10 KHz offset is -170 dBc/Hz typical.
The SDR-IP is built for upgradeability. Future PC interfaces or more powerful FPGAs can be accommodated by just replacing the digital interface board. There is also room inside for an additional full size board and a plug-in frequency downconverter.
The SDR-IP is housed in a solid aluminum, shielded extruded enclosure.
(c) 2008 RFSPACE, Inc..
