Raptor Indoor Channel Sounder System

The Raptor™ is a high-resolution channel sounder system sutiable for indoor propagation studies as well as for outdoor RF sounding. The system consists of two units- a portable, battery-powered correlating receiver Rx and a 3-watt transmitter Tx. The transmitter outputs a BPSK modulated signal that is a 4x over-sampled PN sequence of 255 chips in length. The sampling frequency is up to 100 MHz. The correlating receiver also samples the demodulated baseband signal at 100 MHz. This allows the resolution of multiple RF paths down to 40-50 ns. The highest delay spread that can be monitored at the same time without ambiguity of reflections is up to 10.2 µs. RF sensitivity with this bandwidth will be greater than 85 dBm.

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RF sensitivity of greater than 85 dBm
"Sliding correlator" measures CDMA correlated signal strength (Ec/Io) +1.0 dB
Modulating signal is 4X over-sampled PN sequence of 255 chips length (up to 50 Megachips per second)
100 mW to 3 Watts of CDMA output controllable in 1.0 dB steps
Infinite VSWR protection for power amplifier
Complete data output via RS-232 to laptop PC
Fast Fade analysis supports up to 100 measurements per second
Powerful multipath analysis that verifies reflections
True RF channel sounding - magnitude & phase measurement
Optimization of symbol rates
Analysis of coverage areas
Verification of equalizing algorithms

RAPTOR TRANSMITTER:
Tuning Range	2.4-2.85 GHz (up to 250 MHz tuning range in 1 MHz steps)
Output Power Range	+20 to +35 dBm in 1 dB steps
Modulation	BPSK (demodulator uses both I and Q quadrature signal components)
Code Rate	25 to 50 Megachips per second
Output Filtering	Multistage (128 stages) FIR filter
Output Monitoring	6:1 VSWR monitoring
VSWR Monitoring	-20 dB
Weight	7 lbs.
Dimensions	14" x 11" x 6"
RAPTOR RECEIVER:
Tuning Range	2.4-2.85 GHz (1 MHz steps)
Time Resolution	40 ns
Sensitivity	-105 dBm minimum
Maximum Delay	10 microseconds
Dynamic Range	-30 dBm to -85 dBm (maximum input without damage to LNA is +13 dBm)
Nominal Processing Range	21 dB
Stability	+0.1 ppm 0 to 50 degrees C
Phase Noise	<100 Hz out 1 kHz from carrier
Code Rate	25 Megachips per second
Remote Control	Control of receiver functions through RS-232 port
Power	12 VDC @ 1A
Weight	6 lbs.
Dimensions	8" x 6" x 4"

PCS 1930-1990 MHz (Bands A through F)

Cellular 865-897 MHz

Can Raptor be used the same way as Duet?
Yes. Raptor was designed to provide the data from indoor multipath fading analysis that only high-speed architecture can provide but it can also be used for limited outdoor multipath analysis becausethere is no GPS included unlike the Duet.

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